Evaluation of wastewater treatment site selection
111918376
Research on site evaluation and foundation selection of municipal wastewater treatment plant
Taking a wastewater treatment plant as an example,from the site engineering geological conditions and geotechnical parameters statistics analyzes,six basic contents of the wastewater plant site evaluation are studied in detail,and a reasonable foundation form is pointed out.The results have reference significance to other wastewater treatment plant site and foundation selection.
Li Rui-song
25565375
Multi criteria analysis of site selection for groundwater recharge with treated municipal wastewater.
Geographic information systems (GIS) and remote sensing techniques are used as a decision support system to identify potential soil aquifer treatment (SAT) sites for groundwater recharge of Kerman aquifer, which is located in the southeast of Iran. These sites are identified using a single objective multi criteria analysis. To ensure technical feasibility, environmental sustainability, social acceptability and economical viability a number of criteria are considered for the site selection. The criteria selected for the different variables and acceptable ranges are based on standards published in national and international guidelines and technical documents. Multi criteria evaluation was performed combining all produced thematic maps by means of the weighted index overlay method in order to select sites meeting all the criteria. The resulting map of this analysis shows potential sites are located in the north, southwest and southeast of the study area. Considering field observations, a potential site, which is located in the southwest of the study area, is proposed as the most suitable site for SAT. The result indicates that the study area has sufficient required suitable space for groundwater recharge with treated wastewater.
Water science and technology a journal of the International Association on Water Pollution Research
Mohammad Mehdi Ahmadi Hadi Mahdavirad Bahram Bakhtiari
54679898
Holistic Wastewater Reuse Solutions Evaluation of Treatment Efficiency, Environmental Impacts and Costs
The reuse of municipal wastewater is becoming a well accepted solution for the management of water resources affecting various water using sectors. Configuring the most sustainable and effective treatment system for the reuse of municipal wastewater, however, is still challenging. The present study offers an approach favoring the use of various sustainability metrics such as targeted or delivered treatment efficiency, environmental and economic impacts, area footprint and energy consumption for the configuration and selection of treatment systems for specific non potable reuse applications and site characteristics. The results show that the presented approach can clearly provide information about trade offs between performance, environmental impact and economic cost for different plant sizes and potential reuse demands. The provided real case example, based on an extensive international study of various treatment systems, further illustrates that focusing on only one of the sustainability metrics may not provide the most sustainable solution. For some reuse applications, higher effluent quality than targeted will be provided at lower overall environmental impact and lower energy consumption but at higher costs. The study also demonstrates that the same treatment system may not be the most sustainable option for all plant sizes. The approach presented here provides a way to identify the most sustainable solution for each individual case, based on local requirements and plant size, through the holistic evaluation of treatment system sustainability.
Aleksandra Lazic
126921080
Site Selection Methodology for the Land Treatment of Wastewater.
Abstract A method is presented that covers facets of site selection from preliminary screening to field data acquisition for the preparation of a final design for a land treatment system. The basic assumption underlying the method is an approach to site selection in which the entire study area is investigated for potential sites while considering the whole spectrum of land treatment processes. Due to the extensive nature of such a study, several iterations are required to determine the most feasible site and land treatment alternatives. The method is presented in three parts. Level I defines the technical feasibility of implementing land treatment for a particular wastewater problem. The boundaries of the study area are defined and available land areas are rated for their suitability for land treatment based on topography, land use, hydrogeology and soil characteristics. A preliminary design for each suitable level I site candidate is prepared in the level II site analysis. The design is based on an evaluation of soil/waste interactions that considers responses to limiting soil conditions. A cost effectiveness evaluation of waste treatment alternatives and site candidates is developed in level II. The most cost effective site candidate is then selected for intensive level III field investigations. Data acquired in the level III field investigations will determine the design requirements of the land treatment system.
John R Ryan Raymond C Loehr
214684198
Decision making for the selection of different leachate treatment/management methods: the ANP and PROMETHEE approaches
Municipal solid waste (MSW) landfill leachate is a highly contaminated liquid effluent. Leachate has a complex nature that needs to be appropriately treated before being discharged into the environment. There are various options for leachate treatment. Deciding which option should be applied is a complex process, since it depends on many factors that need to provide a balance between the technical, economic, and environmental aspects of sustainability. Multi criteria decision making (MCDM) methods are useful techniques to solve complex problems that cannot be easily solved. In this study, MCDM techniques are used for an evaluation of four different leachate treatment options: recirculation of leachate to a landfill site (A1) combined treatment with municipal wastewater (A2) anaerobic and aerobic sequential treatment (A3) and advanced leachate treatment based on membrane processes (A4) The selection of the most appropriate one, based on the criteria, analytic network process (ANP) and preference ranking organization method for enrichment evaluations (PROMETHEE) methods, was applied as MCDM techniques using the Super Decisions software and D Sight software, respectively. Both the ANP and the PROMETHEE analysis results demonstrate that option A2 is the most appropriate for all of the decision makers.
Environmental Science and Pollution Research
Alp Ozdemir Aysun Ozkan Zerrin Gunkaya Mufide Banar
108739938
Process selection for sanitation systems and wastewater treatment in refugee camps during disaster relief situations
Disasters and emergency situalions can disrupt the provision of clean water and hygienic sanitation, which are crucial for maintaining public health. Excreta disposal in emergencies has often been a low priority and this has led to the provision of unsuitable on site sanitation systems in urban areas. A decision algorithm for the selection of adequate excreta disposal solutions suitable for different disaster relief scenarios is presented. The special requirements of a wastewater treatment system for deployment during an emergency are discussed and a semi centralised system is recommended to serve 5000 refugees under a range of assumed loading conditions. Twenty three aerobic, anaerobic and natural systems are considered for secondary treatment and a process selection matrix is presented based around 16 evaluation criteria. A system layout is developed based around several sanitation facilities including sedimentation tanks connected to a centralised roughing trickling filter and an activated sludge unit, which provides optimal performance against the evaluation criteria. The system provides the required treatment performance in an easy to deploy, low cost compact installation.
Richard A Fenner Peter M Guthrie E Piano
131644264
Land Treatment Site Evaluation in Southeastern Mountainous Areas
Land treatment of municipal wastewater is a viable alternative to in plant treatment and eliminates the environmental impact of direct discharge to surface waters. The design must be site specific to incorporate climatic, soil, geologic, hydrologic, and vegetation factors. The major processes in evaluating a land treatment site can be divided into two major phases: site evaluation and hydrologic budget evaluation. A site investigation is first completed to aid in the selection of a site and to assess its feasibility for land treatment. Seventeen site selection factors are identified and divided into two groups based on their impact to the site selection process. Once the general feasibility of the site has been determined, the hydrologic budget evaluation is used to estimate the wastewater hydraulic loading.
Glenn L Taylor
2825305
Discussion of EIA emphasis of municipal wastewater treatment plant project
This paper has analyzed the emphasis of EIA of the wastewater treatment plant project based on its characteristics. Results show that, for environmental impact evaluation of the urban sewage treatment plants, these are the emphasis of EIA such as rationality of site selection, comparison of tail water outfall option, analysis of water quality and quantity, sewage treatment processa, feasibility analysis of tail water compliance.
2011 International Conference on Electric Technology and Civil Engineering (ICETCE)
Wen Xiaole Li Zhengfeng
13320832
New tool for wastewater treatment units location.
Abstract In this article, a decision making process for the potential location of new wastewater treatment units with wide community participation and acceptance is suggested. The main scientific contribution of this work is the elaboration of an independent decision making tool, which can be used in site selection of wastewater treatment units. Specifically, at a first level, it acts as an intermediary between experts (i.e. engineers, technical advisors) and decision makers (i.e. electives, appointive advisors) helping decision makers to use experts' knowledge. At a higher level, it acts as an independent processor of decision makers' judgments thereby giving a result that is in accordance with pre chosen criteria. In this way, the local authorities can effectively participate in the decision making process and avert the violation of possible agreements. Furthermore, the evaluation criteria and the methodology of multi criteria analysis for new wastewater treatment unit location are presented.
Vasilios Chr Vasiloglou Filotheos Lokkas G Gravanis
114713736
Selecting wastewater sites using analytical hierarchy and geographic information system
Locating sewer networks and treatment facilities for processing prior to disposal of domestic and industrial wastewater is a complex, difficult, tedious and protracted process requiring evaluation of many different criteria. To find the best place to locate a wastewater stabilisation pond in Behbahan, a city in Iran, ecological, technical and economical criteria were taken into consideration. Each of these criteria had some subcriteria. The analytical hierarchy process is a useful tool used for decision making problems. In this paper, a geographical information system and the analytical hierarchy process as a multi criteria decision making tool were integrated for site selection of wastewater stabilisation ponds. The importance of each criterion was determined by expert survey. After identification and weighting each criterion using the analytical hierarchy process, the information layers were entered onto a geographic information system. Finally, all the weighted maps were reclassified to select the appr.
Mahboobeh Kafil Mohammad Albaji