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Corrosion control when using secondary treated municipal wastewater as alternative makeup water for cooling tower systems. Secondary treated municipal wastewater is a promising alternative to fresh water as power plant cooling water system makeup water, especially in arid regions.
Laboratory and field testing was conducted in this study to evaluate the corrosiveness of secondary treated municipal wastewater for various metals and metal alloys in cooling systems. Different corrosion control strategies were evaluated based on varied chemical treatment. The objective of the present study was to investigate for the first time the long-term removal of heavy metals HMs in a combined UASB-CW system treating municipal wastewater.
The research was carried out in a field pilot plant constituted for an up-flow anaerobic sludge bed UASB digester as a pretreatment, followed by a surface flow constructed wetland CW and finally by a subsurface flow CW. While the UASB showed pseudo steady state operational conditions and generated a periodical purge of sludge, CWs were characterised by the progressive accumulation and mineralisation of retained solids.
This paper analyses the evolution of HM removal from the water stream over time over a period of 4. High removal efficiencies were found for some metals in the following order: Different systems and approaches to treat municipal solid waste.
A state-of the art assessment. Anaerobic digestion is still a fairly new technology in the area of utilisation of organic residues, in particular as far as treatment of household wastes and integration of agricultural production is concerned. In the last few years, a number of different processes and concepts, with a variety of different intentions, have been developed and established on the European market, in particular in Germany.
Actual categories and parameters, used to analyse, structure and compare available treatment systems , are not yet fully satisfying. The presentation will consist of the following elements: Factors influencing the market of the technology in the recent past.
Brief comparison of features of anaerobic solid waste digestion with land filling, composting and incineration. Brief comparison between some European and Non-European countries, concerning municipal solid waste digestion.
Presentation of a comprehensive structure, covering the main technical elements of any of the different technologies available. Microbial community composition and dynamics of moving bed biofilm reactor systems treating municipal sewage. Moving bed biofilm reactor MBBR systems are increasingly used for municipal and industrial wastewater treatment, yet in contrast to activated sludge AS systems , little is known about their constituent microbial communities. Monthly samples comprising biofilm and suspended biomass were collected over a month period.
Bacterial and archaeal community composition was determined using a full-cycle community approach, including analysis of 16S rRNA gene libraries, fluorescence in situ hybridization FISH and automated ribosomal intergenic spacer analysis ARISA.
Differences in microbial community structure and abundance were observed between the two WWTPs and between biofilm and suspended biomass.
Biofilms from both plants were dominated by Clostridia and sulfate-reducing members of the Deltaproteobacteria SRBs. FISH analyses indicated morphological differences in the Deltaproteobacteria detected at the two plants and also revealed distinctive clustering between SRBs and members of the Methanosarcinales, which were the only Archaea detected and were present in low abundance systems and indicates that this process selects for distinctive biofilm and planktonic communities, both of which differ from those found in conventional AS systems.
Ultraviolet disinfection of treated municipal wastewaters. A wastewater disinfection system developed by a Canadian company, Trojan Technologies Inc. Disinfection for pathogen reduction prior to discharge of treated municipal wastewater back into rivers and lakes has been either ignored or treated by the use of chemicals. In the first pilot ultraviolet UV wastewater disinfection system was established. Since then, over municipal UV installations have been commissioned.
The largest installation can process million gallons of water per day. The advantages of UV as a disinfectant are: Europe has not been as active in wastewater disinfection as has North America. One result of the absence of wastewater disinfection in Europe is that the Rhine River, for example, carries 50 million salmonella per second. Disinfection of wastewater effluents is, of course, indispensable in protecting our drinking water supply.
Molecular-based detection of potentially pathogenic bacteria in membrane bioreactor MBR systems treating municipal wastewater: Although membrane bioreactor MBR systems provide better removal of pathogens compared to conventional activated sludge processes, they do not achieve total log removal. Both of these systems were operated using microfiltration MF polymeric membranes.
High-throughput sequencing and digital PCR quantification were utilized to monitor the log removal values LRVs of associated pathogenic species and their abundance in the MBR effluents. Results showed that specific removal rates vary widely regardless of the system employed. Each of the two MBR effluents' microbial communities contained genera associated with opportunistic pathogens e.
Digital PCR further confirmed that these bacterial groups included pathogenic species, in several instances at LRVs different than those for their respective genera. These results were used to evaluate the potential risks associated both with the reuse of the MBR effluents for irrigation purposes and with land application of the activated sludge from the full-scale MBR system.
Municipal Treated Wastewater Irrigation: Directory of Open Access Journals Sweden. Full Text Available Municipal wastewater for irrigation, though treated , can contain substances and pathogens toxic for humans and animals. Pathogens, although not harmful from an agronomical aspect, undoubtedly represent a major concern with regards to sanitary and hygienic profile.
In fact, vegetable crops irrigated with treated wastewater exalt the risk of infection since these products can also be eaten raw, as well as transformed or cooked. Different probabilistic models have been studied to assess the microbiological risk; among these, the Beta-Poisson model resulted the most reliable.
Thus, the Dipartimento di Scienze delle Produzioni Vegetali of the University of Bari, which has been carrying out researches on irrigation with municipal filtered wastewater for several years, considered interesting to verify if the microbial limits imposed by the italian law n.
Treated municipal wastewater is a common, widely available alternative source of cooling water for thermoelectric power plants across the U. However, the biodegradable organic matter, ammonia-nitrogen, carbonate and phosphates in the treated wastewater pose challenges with respect to enhanced biofouling, corrosion, and scaling, respectively. The overall objective of this study was to evaluate the benefits and life cycle costs of implementing tertiary treatment of secondary treated municipal wastewater prior to use in recirculating cooling systems.
The study comprised bench- and pilot-scale experimental studies with three different tertiary treated municipal wastewaters, and life cycle costing and environmental analyses of various tertiary treatment schemes. Sustainability factors and metrics for reuse of treated wastewater in power plant cooling systems were also evaluated. The three tertiary treated wastewaters studied were: Tertiary treatment was determined to be essential to achieve appropriate corrosion, scaling, and biofouling control for use of secondary treated municipal wastewater in power plant cooling systems.
The ability to control scaling, in particular, was found to be significantly enhanced with tertiary treated wastewater compared to secondary treated wastewater. Corrosion could be adequately controlled with tolytriazole addition ppm TTA , however, which was the case for all of the tertiary treated waters. Alfred pilot wetland to treat municipal lagoon effluent - case study. A constructed wetland demonstration system has been built to polish the municipal lagoon effluent from the village of Alfred.
The treatment lagoons have an annual discharge in the spring and have currently reached maximum capacity; inhibiting further population growth or expansion of the local agri-food industries.
A three year monitoring program was put in place to evaluate the wetland as a cost effective means to treat municipal lagoon wastewater for the village of Alfred. The and monitoring seasons have been completed, and the monitoring season will operate between June and October As phosphorus is the most difficult element to remove down to MOE guidelines, the Alfred research wetland includes slag phosphorus adsorption filters and a vegetated filter as phosphorus polishing systems.
Once the wetland system is approved by the MOE, the village of Alfred will be able to increase its capacity for municipal wastewater treatment. Constructed wetlands are still considered innovative systems in Ontario and government ministries MOE, OMAFRA are insisting upon years of monitoring data for each constructed wetland system established. There is a clear need for monitoring data to be gathered on established systems , and for this data to be evaluated with the goal of developing reliable design guidelines.
Ultimately this should result in having constructed wetlands recognised as viable wastewater treatment options in Ontario. With fewer grant programs for rural municipalities , cost effective systems such. Effects of ozone, ultraviolet and peracetic acid disinfection of a primary- treated municipal effluent on the immune system of rainbow trout Oncorhynchus mykiss. Municipal sewage effluents are complex mixtures that are known to compromise the health condition of aquatic organisms.
The aim of this study was to evaluate the impacts of various wastewater disinfection processes on the immune system of juvenile rainbow trout Oncorhynchus mykiss. The trout were exposed to a primary- treated effluent for 28 days before and after one of each of the following treatments: Immune function was characterized in leucocytes from the anterior head kidney by the following three parameters: The results show that the fish mass to length ratio was significantly decreased for the primary- treated and all three disinfection processes.
Exposure to the primary- treated effluent led to a significant increase in macrophage-related phagocytosis; the addition of a disinfection step was effective in removing this effect. Both unstimulated and mitogen-stimulated T lymphocyte proliferation in fish decreased dramatically in fish exposed to the ozonated effluent compared to fish exposed to either the primary- treated effluent or to aquarium water.
Stimulation of T lymphocytes proliferation was observed with the peracetic acid treatment group. In conclusion, the disinfection strategy used can modify the immune system in fish at the level of T lymphocyte proliferation but was effective to remove the effects on phagocytosis activity. Agricultural use of treated municipal wastewaters preserving environmental sustainability.
In this paper the utility of the treated municipal wastewaters in agriculture, analyzing the chemical, physical and microbiological characteristics and their pollution indicators evaluation are being illustrated.
Some methods employed for treating wastewaters are examined, as well as instructions and rules actually in force in different countries of the world, for evaluating the legislative hygienic and sanitary and agronomic problems connected with the treated wastewaters use, are being coll Removal of fecal indicators and pathogens in a waste stabilization pond system treating municipal wastewater in India.
This study assess the removal of fecal indicators i. The results showed that the system was able to remove approximately 2. Meanwhile, Salmonella was not eliminated significantly, as only 1. Removal efficiency of fecal indicator bacteria was reported maximum during summers 3. Further efforts were made to seek the correlation between key physicochemical wastewater quality parameters biochemical oxygen demand, turbidity, and suspended solids and indicator microorganisms total coliforms, fecal coliforms, and fecal streptococci.
Among all these parameters, suspended solids showed the highest correlation coefficient r2 with total coliforms 0. These correlations manifest that the improvement of microbiological quality of wastewater is strongly linked to the removal of suspended solids.
Full Text Available In this paper the utility of the treated municipal wastewaters in agriculture, analyzing the chemical, physical and microbiological characteristics and their pollution indicators evaluation are being illustrated. Some methods employed for treating wastewaters are examined, as well as instructions and rules actually in force in different countries of the world, for evaluating the legislative hygienic and sanitary and agronomic problems connected with the treated wastewaters use, are being collected and compared.
Successively, in order to provide useful indications for the use of treated municipal wastewaters, results of long-term field researches, carried out in Puglia, regarding two types of waters treated municipal wastewater and conventional water and two irrigation methods drip and capillary sub-irrigation on vegetable crops grown in succession, are being reported.
For each crop cycle, chemical physical and microbiological analyses have been performed on irrigation water, soil and crop samples. The results evidenced that although irrigating with waters having high colimetric values, higher than those indicated by law and with two different irrigation methods, never soil and marketable yield pollutions have been observed.
Concentrations of heavy metals in soil and crops were lesser than those admissible by law. The free chlorine, coming from disinfection, found in the wastewaters used for watering, in some cases caused toxicity effects, which determined significant yield decreases.
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The approach allows comparing the economic security level of municipalities , but it does not describe parameter differences between compared municipalities. Therefore, there is a second method suggested: Applying these methods allowed to figure out the leaders and outsiders of the economic security among municipalities and rank all economic security parameters according to the significance level. Complex assessment of the economic security of municipalities , based on the combination of the two approaches, allowed to assess the security level more accurate.
In order to assure economic security and equalize its threshold values, one should pay special attention to transportation system development in municipalities. Strategic aims of projects in the area of transportation infrastructure development in municipalities include the following issues: Combined Municipal Solid Waste and biomass system optimization for district energy applications.
Municipal Solid Waste MSW disposal has been a controversial issue in many countries over the past years, due to disagreement among the various stakeholders on the waste management policies and technologies to be adopted. The overall efficiency can be very high in the cases of co-generation or tri-generation. In this paper a model is presented, aiming to support decision makers in issues relating to Municipal Solid Waste energy recovery. The idea of using more fuel sources, including MSW and agricultural residue biomass that may exist in a rural area, is explored.
The model aims at optimizing the system specifications, such as the capacity of the base-load Waste-to-Energy facility, the capacity of the peak-load biomass boiler and the location of the facility. Furthermore, it defines the quantity of each potential fuel source that should be used annually, in order to maximize the financial yield of the investment.
The results of an energy tri-generation case study application at a rural area of Greece, using mixed MSW and biomass, indicate positive financial yield of investment. In addition, a sensitivity analysis is performed on the effect of the most important parameters of the model on the optimum solution, pinpointing the parameters of interest rate, investment cost and heating oil price, as those requiring the attention of the decision makers.
Finally, the sensitivity analysis is enhanced by a stochastic analysis to determine the effect of the volatility of parameters on the robustness of the model and the solution obtained. Full Text Available The issues of the dataware of the comparative analysis procedure benchmarking for municipal power system facilities energy efficiency level estimation with a view of the hierarchical structure of the heat supply system are considered.
The aim of the paper is the system of indicators formation for characterizing the efficiency of energy usage as on objects on lowest so on highest levels of power systems , proceeding from features of their functioning. Benchmarking methodology allows carrying out the estimation of energy efficiency level on the base of a plurality of parameters without their generalization in one indicator, but requires ensuring their comparability.
Using the methodology of available statistical information that did not require deep specification and additional inspection structuring objectives and tasks of energy efficiency estimation problem has been proposed for ensuring the opportunity of benchmarking procedure implementation. This makes it possible to form the subset of indicators that ensure enough specification of the object of study, taking into account the degree of abstraction for every hierarchical level or sub problem.
For a comparative analysis of energy using efficiency in municipal power systems at the highest levels of the hierarchy a plurality of indicators of the energy efficiency has been formed. Indicators have been determined with consideration of the structural elements of heat supply systems , but allowing taking into account the efficiency of the initial state of the objects, their functioning, and the questions of energy resources accounting organization.
Usage of the proposed indicators provides implementation of energy using efficiency monitoring in the municipal power system and allows getting complete overview of the problem. Full Text Available The paper presents a system of financial indicators for the efficiency of use of municipal real property. The following may be pointed out as the major aspects of the practical analysis: The paper aims at clarifying the major moments in the analysis of the structure, composition, and effective use of municipal real property, and the determination of definite indicators to be applied to this analysis oriented towards its implementation.
The wide variety of parameters is reduced to a system of 16 indicators: The paper presents the structure and content of the indicators of the analysis of the municipal real property, as well as the input of these indicators. The estimation values necessary to determine the indicators, the indicators themselves and their meaning make it possible to study the effectiveness of the operations functioning of the municipal real property in terms of description of its physical condition, structure, content, purpose and functions, which generates revenues or brings expenditures to the municipality.
The system of indicators provides for decision making with a view to boosting the efficiency of public sector management and more specifically — the management of municipal real property. Full Text Available The paper introduces a conceptual framework for an accounting of the municipal real property, and defines a respective system of indicators.
The development of this framework is seen as an important prerequisite for the efficient property management. It aims to overcome the lack or poor accessibility of the information, and thus to ensure the successful municipal real property management in a strategic context. The developing of the applied approach implies that accounting indicators are divided into three main groups — values, revenues, and costs.
Beside the above mentioned classification, the municipal revenues and costs are classified also as existing and proposed. The existing indicators are defined by International Accounting Standards in public sector, and some of them are considered as being appropriate for the inclusion in the financial analysis as accounting system entries.
The proposed indicators are perceived as appropriate to carry out a detailed analysis of the municipal property at a lower level of desegregations. The first two paragraphs explain the main bases for the municipal property valuation - historical cost, current price, market value, present value, with a special emphasis on the use of the historical value, and the types of valuation respectively.
The next three paragraphs are concentrated mainly on the accounting indicators for the municipal property assessment. The sixth paragraph represents several major accounting bases - an accounting value, a carrying value, a market value, an accumulated depreciation, revenues from the sale of assets and services, costs by economic elements, revenues from future periods and costs for future periods, and revenues from other events and costs for other events.
Development of an automated system for the decentral fractioning of municipal wastes. Full Text Available Background: There is a growing problem of the increasing amount of unsorted municipal wastes with the resulting consequences for the environment.
The aim of this study was to present a new solutions of the system for the decentral fractioning of municipal wastes, which enable simplification and improvement of the process together with the reduction of total costs. The influence onto the environment as well as the efficiency of the costly mechanical sorting of wastes was queried. The nowadays used principles of sorted and unsorted waste disposal were elucidated and their advantages and disadvantages evaluated.
Based on this evaluation an innovative and future oriented development of an automated system for the decentral fractioning of municipal wastes was presented. The new developed systems aim at the achievement of an easier, less costly and environment-friendlier process for the disposal of municipal wastes from apartment buildings. Treatment of municipal landfill leachate using a combined anaerobic digester and activated sludge system.
The main objective of this study was to assess the feasibility of treating sanitary landfill leachate using a combined anaerobic and activated sludge system. A high-strength leachate from Shiraz municipal landfill site was treated using this system. A two-stage laboratory-scale anaerobic digester under mesophilic conditions and an activated sludge unit were used.
The anaerobic digester treatment was quite effective in removing Fe, Cu, Mn, and Ni. For the rest of the HMs the removal efficiencies were in the range Ammonia reduction did not occur in anaerobic digesters.
Anaerobic reactors increased alkalinity about 3. Methane production rate was in the range of 0. Start-up period investigation of pilot-scale submerged membrane electro-bioreactor SMEBR treating raw municipal wastewater.
Submerged membrane electro-bioreactor SMEBR is a new hybrid technology for wastewater treatment employing electrical field and microfiltration in a nutrient-removing activated sludge process. A pilot SMEBR system was located at the wastewater treatment plant in the City of l'Assomption Quebec, Canada with the objective of investigating the start-up period performance under variable organic loadings and environmental conditions with respect to effluent quality, membrane fouling, and sludge properties.
No substantial increase in the monitored transmembrane pressure as 0. Energy requirements were in the range of 1. It was concluded that the SMEBR is a very competitive technology when compared to conventional membrane systems as it can enhance treatment performance to an appreciable extent, remove phosphorus and reduce fouling. Balancing the organic load and light supply in symbiotic microalgal—bacterial biofilm reactors treating synthetic municipal wastewater.
Symbiotic microalgal—bacterial biofilms can be very attractive for municipal wastewater treatment. Microalgae remove nitrogen and phosphorus and simultaneously produce the oxygen that is required for the aerobic, heterotrophic degradation of organic pollutants. For the application of these biofilms. Differences in microbial communities and performance between suspended and attached growth anaerobic membrane bioreactors treating synthetic municipal wastewater. Both reactors were started up and run under the same operating conditions for multiple steady-state experiments.
Conversely, methanogenic archaea e. Of the methanogens that were present in the CSTR sludge, hydrogenotrophic methanogens dominated e. The results of this study showed that reactor configuration can significantly impact the development of the microbial communities of AnMBRs that are responsible for both membrane and reactor performance.
Molecular characterization of anaerobic sulfur-oxidizing microbial communities in up-flow anaerobic sludge blanket reactor treating municipal sewage. A novel wastewater treatment system consisting of an up-flow anaerobic sludge blanket UASB reactor and a down-flow hanging sponge DHS reactor with sulfur-redox reaction was developed for treatment of municipal sewage under low-temperature conditions. In the UASB reactor, a novel phenomenon of anaerobic sulfur oxidation occurred in the absence of oxygen, nitrite and nitrate as electron acceptors.
The microorganisms involved in anaerobic sulfur oxidation have not been elucidated. Therefore, in this study, we studied the microbial communities existing in the UASB reactor that probably enhanced anaerobic sulfur oxidation.
The microbial community structures of bacteria and archaea indicated that the genus Smithella and uncultured bacteria within the phylum Caldiserica were the dominant bacteria groups. The T-RFLP analysis, which was consistent with the cloning results, also yielded characteristic fingerprints for bacterial communities, whereas the archaeal community structure yielded stable microbial community. From these results, it can be presumed that these major bacteria groups, genus Smithella and uncultured bacteria within the phylum Caldiserica, probably play an important role in sulfur oxidation in UASB reactors.
Published by Elsevier B. Flow analysis of metals in a municipal solid waste management system. This study aimed to identify the metal flow in a municipal solid waste MSW management system. Outputs of a resource recovery facility, refuse derived fuel RDF production facility, carbonization facility, plastics liquefaction facility, composting facility, and bio-gasification facility were analyzed for metal content and leaching concentration.
In terms of metal content, bulky and incombustible waste had the highest values. Char from a carbonization facility, which treats household waste, had a higher metal content than MSW incinerator bottom ash. A leaching test revealed that Cd and Pb in char and Pb in RDF production residue exceeded the Japanese regulatory criteria for landfilling, so special attention should be paid to final disposal of these substances. By multiplying metal content and the generation rate of outputs, the metal content of input waste to each facility was estimated.
Finally, several MSW management scenarios showed that most metals are transferred to landfills and the leaching potential of metals to the environment is quite small. Integrated system of phytodepuration and water reclamation: A comparative evaluation of four municipal wastewater treatment plants.
In dry regions, water resources have become increasingly limited, and the use of alternative sources is considered one of the main strategies in sustainable water management. A highly viable alternative to commonly used water resources is treated municipal wastewater, which could strongly benefit from advanced and low-cost techniques for depuration, such as the integrated system of phytodepuration ISP.
The current manuscript investigates four Italian case studies with different sizes and characteristics. The raw wastewaters and final effluents were sampled on a monthly basis over a period of up to five years, allowing the quantification of the ISP performances. Moreover, for three of the case studies, the ISP final effluent is suitable for irrigation, and in the fourth case study, the final effluent can be released in surface water.
Internalising external costs of electricity and heat production in a municipal energy system. Both energy supply and waste treatment give rise to negative effects on the environment, so-called external effects.
In this study, monetary values on external costs collected from the EU's ExternE project are used to evaluate inclusion of these costs in comparison with an energy utility perspective including present policy instruments. The studied object is a municipal district heating system with a waste incineration plant as the base supplier of heat. The evaluation concerns fuels used for heat production and total electricity production, for scenarios with external costs included and for a scenario using the present policy instrument.
Impacts of assumptions on marginal power producers coal or natural gas power plants are investigated, since locally produced electricity is assumed to replace marginal power and thus is credited for the avoided burden. Varying levels of external costs for carbon dioxide emissions are analysed. The conclusion is that present policy instruments are strong incentives for cogeneration, even when external costs are included.
Waste is fully utilised in all scenarios. In cases where coal is the marginal power producer, more electricity is produced; when natural gas is the marginal power producer, less is produced. There are several uncertainties in the data for external costs, both methodological and ethical. In the ExternE data, not all environmental impacts are included. For waste incineration, ashes are not included, and another difficulty is how to treat the avoided burden of other waste treatment methods.
An inexact two-stage stochastic energy systems planning model for managing greenhouse gas emission at a municipal level. Energy management systems are highly complicated with greenhouse-gas emission reduction issues and a variety of social, economic, political, environmental and technical factors. To address such complexities, municipal energy systems planning models are desired as they can take account of these factors and their interactions within municipal energy management systems.
This research is to develop an interval-parameter two-stage stochastic municipal energy systems planning model ITS-MEM for supporting decisions of energy systems planning and GHG greenhouse gases emission management at a municipal level.
The results indicated that the developed model was capable of supporting municipal energy systems planning and environmental management under uncertainty. Comprehensive monitoring and management of a long-term thermophilic CSTR treating coffee grounds, coffee liquid, milk waste, and municipal sludge. The CSTR process has previously not been successfully applied to treat coffee residues under thermophilic temperature and long term operation.
But, an addition of microelements and sulfate 0. Continuous monitoring of hydrogen in biogas indicated the imbalance of acetogenesis. Single-stage versus two-stage anaerobic fluidized bed bioreactors in treating municipal wastewater: Performance, foulant characteristics, and microbial community. This study examined the receptive performance, membrane foulant characteristics, and microbial community in the single-stage and two-stage anaerobic fluidized membrane bioreactor AFMBR treating settled raw municipal wastewater with the aims to explore fouling mechanisms and microbial community structure in both systems.
The accumulation rate of the biopolymers was linearly correlated with the membrane fouling rate. In the chemical-cleaned foulants, humic acid-like substances and silicon were identified as the predominant organic and inorganic fouants respectively.
As such, the fluidized GAC particles might not be effective in removing these substances from the membrane surfaces. High-throughout pyrosequencing analysis further revealed that beta-Proteobacteria were predominant members in both AFMBRs, which contributed to the development of biofilms on the fluidized GAC and membrane surfaces.
However, it was also noted that the abundance of the identified dominant in the membrane surface-associated biofilm seemed to be related to the permeate flux and reactor configuration. Cienfuegos Botanical Garden and the Municipal Agricultural System , a territorial approach to local management extensionism. Full Text Available The present work identifies the goods and services available in the Botanical Garden of Cienfuegos, from the plant genetic resources that tax the agricultural sector and that allow to establish synergies with the Agrarian System of the Municipality Cienfuegos with the purpose of producing food.
Detection of contamination of municipal water distribution systems. A system for the detection of contaminates of a fluid in a conduit. The conduit is part of a fluid distribution system. A chemical or biological sensor array is connected to the conduit.
The sensor array produces an acoustic signal burst in the fluid upon detection of contaminates in the fluid. A supervisory control system connected to the fluid and operatively connected to the fluid distribution system signals the fluid distribution system upon detection of contaminates in the fluid.
Transforming the energy system: Why municipalities strive for energy self-sufficiency. Despite evidence that a rising number of municipalities in Germany are striving for energy self-sufficiency, there is little understanding of the driving factors behind this development.
We investigate economic, ecological, social and energy system related factors that drive municipalities to strive for energy self-sufficiency with a focus on electricity supply. Policymakers need to decide whether or not to support mayors in this development.
For suitable policy interventions, the results suggest the importance of an integrated approach that considers a combination of identified factors. Finally, we propose a morphological box to structure different aspects of energy self-sufficiency and categorize the present study.
Technical infrastructures are the important development-level parameters of countries, difficult to maintain and require high-investment cost. It is required to take the advantage of information system for the better administration of technical infrastructure facilities, planning and taking effective decisions.
Hence, infrastructure information systems must be built oriented to technical infrastructure TI. In this study, Kunduracilar Street in Trabzon was selected as pilot area oriented to Full Text Available Technical infrastructures are the important development-level parameters of countries, difficult to maintain and require high-investment cost.
In this study, Kunduracilar Street in Trabzon was selected as pilot area oriented to urban TI studies. Graphic and attribute information of the pilot area were collected. Every TI facility was arranged into the same coordinate system with different layers. Administrative law risks of the governmental and municipal procurement system. Full Text Available The paper deals with the administrative law risks of the Russian system of public procurement. The authors analyze the foregoing risks in the view of the correlation of risk situations, risk actions omission and administrative law prohibitions.
The authors are considering problems of the subject and some other characteristics essential to the administrative offenses in terms of the most systemic risk in this sphere — an information risk. The materials on law practice open to general use generated in more than 25 entities of the Russian Federation were used in the paper while preparing. This paper reports the evaluation of households' usage of the current solid waste management system SWMS within the city of Ilorin, central Nigeria and investigates the determinants of household's willingness-to-Pay WTP for its improvement.
Data was collected with the aid of a structured questionnaire administered to Small-scale hybrid plant integrated with municipal energy supply system. This paper describes a research program started in to optimize environmental impact and cost of a small-scale hybrid plant based on candidate resources, transportation technologies and conversion efficiency, including integration with existing energy distribution systems.
Special attention is given to a novel hybrid energy concept fuelled by municipal solid waste. The commercial interest for the model is expected to be more pronounced in remote communities and villages, including communities subject to growing prosperity. To enable optimization of complex energy distribution systems with multiple energy sources and carriers a flexible and robust methodology must be developed.
This will enable energy companies and consultants to carry out comprehensive feasibility studies prior to investment, including technological, economic and environmental aspects. Governmental and municipal bodies will be able to pursue scenario studies involving energy systems and their impact on the environment, and measure the consequences of possible regulation regimes on environmental questions.
This paper describes the hybrid concept for conversion of municipal solid waste in terms of energy supply, as well as the methodology for optimizing such integrated energy systems.
Prior to executing an experiment, the software and hardware of the control computer is tested by a closed loop real-time simulation. Two computers with parallel processing are used for the reactor simulation and another computer is used for simulation of the control rod system.
A monitor computer, used as a redundant diverse reactor protection channel, uses more conservative setpoints and reduces challenges to the Reactor Trip System RTS.
The RTS consists of triplicated hardwired channels with one out of three logic. The advantages of LED street lighting and a smart control system in Uppsala municipality. The purpose of this bachelor thesis is to examine how LED street lights and a smart street light control system can reduce the energy consumption, costs and in extension the CO2 equivalents in a geographically delimited area.
In the municipality of Sala installed LED armatures connected to a smart control system in the whole municipality. The smart control system enables for instance adjustment of the light intensity at specific times during the day and a supervision of the street light Considering the importance of Brazil's Information System on Public Health Budgets SIOPS as a tool for planning, management, and social control of public expenditures in health, this article aimed to evaluate the relationship between the regularity of data entry into the SIOPS and knowledge and use of the system by municipal health administrators in Pernambuco State, Brazil.
Ten municipalities were selected from the State's five meso-regions, five of which entered information into the system and five only on an irregular basis. Semi-structured interviews were performed with the municipal health secretaries. Analysis of the data showed that command of information technology and knowledge of the System do not affect the regularity of data entry, as a function of the distance between the Municipal Health Secretariat administrators and the SIOPS, such that the data are normally entered by outsourced services.
Thus, the resulting information has not been fully explored by systems administrators as a management tool. Conceptual design of a municipal energy and environmental system as an efficient basis for advanced energy planning. Effectively implementing various energy and environmental policies contributes to the acceleration of energy performance, a reduction in negative environmental impacts, and increased deployment of renewable resources.
The MEEMS municipal energy and environmental management system performs the almost inconceivable role of accomplishing prerequisite targets at the national level and, consequently, the European and World levels also. Therefore, a proper infrastructure for MEEMS needs to be effectively applied in order to implement policy initiatives. By properly addressing the dynamics of the MEES municipal energy and environmental system , and the new conceptual organisation of MEEMS, a need for the inclusion of innovative elements can be defined regarding support mechanisms.
This new concept paves a pathway towards an intelligent energy and environmental system. This paper describes an implementation of the new conceptual design of MEEMS within the urban municipality energy system of Ptuj, Slovenia. Development of rationalized system treating floor drain. Radioactive liquid wastes generated at BWR plants are collected and treated as required.
These days, however, generation of floor drain has deceased and HFF Hollow Fiber Filter has experienced a wide applicability to several kinds of liquid wastes. We should consider that the floor drain can be mixed and diluted with equipment drain and be purified by HFF. That enables some of the sumps and long priming pipes to be combined. From this point of view, we have developed a highly rationalized waste liquid system. We have evaluated the applicability of this system after an investigation into the generation and properties of floor drain and equipment drain at the latest BWR'S and an on-site test at a typical BWR.
Seawater-driven forward osmosis for enriching nitrogen and phosphorous in treated municipal wastewater: Seawater-driven forward osmosis FO is considered to be a novel strategy to concentrate nutrients in treated municipal wastewater for further recovery as well as simultaneous discharge of highly purified wastewater into the sea with low cost. As a preliminary test, the performance of FO membranes in concentrating nutrients was investigated by both batch experiments and model simulation approaches.
With synthetic seawater as the draw solution, the dissolved organic carbon, phosphate, and ammonia in the effluent from a membrane bioreactor MBR treating municipal wastewater were 2.
The effect of membrane properties on the nutrient enrichment performance was investigated by comparing three types of FO membranes. Interestingly, a polyamide membrane possessing a high negative charge demonstrated a poor capability of retaining ammonia, which was hypothesized because of an ion exchange-like mechanism across the membrane prompted by the high ionic concentration of the draw solution. The modeling results showed that higher than fold concentrations of ammonia and phosphate are achievable by seawater-driven FO with a draw solution to feed solution volume ratio of 2: The enriched municipal wastewater contains nitrogen and phosphorous concentrations comparable with typical animal wastewater and anaerobic digestion effluent, which are used for direct nutrient recovery.
Approach to local autonomy in the German and British systems of municipal financing. Full Text Available At the European level the recognition of local self-government is a peaceful matter after being approved in the European Charter of Local Autonomy. However, the scope of this local financial autonomy varies according to the model of public finances that each country adopts.
In this article we analyze the German and British models of local finance, two opposite examples in the way of organizing their treasure that directly affect the scope of the local autonomy of their municipalities. After a first part where the legal basis of the local autonomy is analyzed, the main sources of municipal financing are studied in each model, and it concludes with an assessment of the financial autonomy of the local entities within the Spanish system in comparison with the exposed models.
Sustainability indicators system of tourism development: This work is descriptive and it presents an exploratory and quantitative research. To carry out this investigation, three stages of data analysis criteria were established: The results indicate that the municipality presents a partly unsustainable tourism, since among the six sustainability dimensions for tourism destinations two dimensions demonstrate intermediary sustainability, two dimensions are partially unsustainable, and the other two dimensions are unsustainable.
This situation demands from public administrators the design of new action plans for the implementation of investments and projects that may facilitate the sustainable development of tourism in the municipality. Waste collection systems for recyclables: An environmental and economic assessment for the municipality of Aarhus Denmark. Recycling of paper and glass from household waste is an integrated part of waste management in Denmark, however, increased recycling is a legislative target.
This was investigated in a case study of a municipal waste management system. Five scenarios with alternative collection systems for recyclables paper, glass, metal and plastic packaging were assessed by means of a life cycle assessment and an assessment of the municipality 's costs. In general, the results showed that enhancing recycling and avoiding incineration was recommendable because the environmental performance was improved in several impact categories. The municipal costs for collection and treatment of waste were reduced with increasing recycling, mainly because the high cost for incineration was avoided.
However, solutions for mitigation of air pollution caused by increased collection and transport should be sought. Moreover, assuming 20 years of operation, the payback period is 4. The present work focuses on the design of a novel tri-generation system based on municipal solid wastes gasification, solid oxide fuel cell and an ammonia-water absorption chiller.
Trigeneration systems can be implemented in buildings such as hospitals, where there is a continuous and large demand Impact of small-scale storage systems on the photovoltaic penetration potential at the municipal scale.
The yearly cumulated technical energy generation potential of grid-connected roof-top photovoltaic power plants is significantly larger than the demand of domestic buildings in sparsely populated municipalities in central Europe. However, an energy balance with cumulated annual values does not deliver the right picture about the actual potential for photovoltaics since these run on a highly variable energy source as solar radiation. The mismatch between the periods of generation and demand creates hard limitations for the deployment of the theoretical energy generation potential of roof-top photovoltaics.
In this study we evaluate in how far small-scale storage systems can contribute to increment the grid-connected roof-top photovoltaic penetration in domestic buildings at a municipal scale.
To accomplish this, we calculate, in a first step, the total technical roof-top photovoltaic energy generation potential of a municipality in a high spatiotemporal resolution using a procedure that relies on geographic information systems. Posteriorly, we constrain the set of potential photovoltaic plants to the ones that would be necessary to cover the total yearly demand of the municipality.
We assume that photovoltaic plants with the highest yearly yield are the ones that should be installed. For this sub-set of photovoltaic plants we consider five scenarios: Afterwards we evaluate the energy balance of the. Full Text Available Waste removal collection and landfilling in the Republic of Croatia is the responsibility of the municipalities and local governments in 21 administrative units counties. They entrust the respective economic activity to private and public companies specialized in waste collection and treatment.
The mixed waste from households and enterprises is at various frequencies collected at the door kerbside collection and transported by truck to a landfill, or processing plant. This article aims to estimate fuel consumption and fuel-related airborne emissions from the collection of mixed municipal waste in Croatia in The input data and emission results are shown for Croatia and each Croatian county, in total, and relative to the number of inhabitants and mass of collected waste.
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