Tesi sul tema "Wastewater management"
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Rowse, John William. "A framework for comparison of on-site wastewater management and centralised wastewater management". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0021/MQ54579.pdf.
Testo completoPalmquist, Helena. "Hazardous substances in wastewater management /". Luleå, 2004. http://epubl.luth.se/1402-1544/2004/47.
Testo completoUgarelli, Rita Maria <1973>. "Asset management of wastewater networks". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/878/1/Tesi_Ugarelli_Rita_Maria.pdf.
Testo completoUgarelli, Rita Maria <1973>. "Asset management of wastewater networks". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/878/.
Testo completoMiles, Leon Anthony. "Knowledge management and environmental management". Thesis, University of Surrey, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365193.
Testo completoPalmquist, Helena. "Hazardous substances in wastewater systems : a delicate issue for wastewater management". Licentiate thesis, Luleå tekniska universitet, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17510.
Testo completoGodkänd; 2001; 20070225 (ysko)
Bhattacharya, Mahua M. Eng Massachusetts Institute of Technology. "Wastewater sludge management options for Honduras". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50618.
Testo completoIncludes bibliographical references (leaves 48-50).
Sludge management is a fundamental area of concern across wastewater treatment systems in Honduras. The lack of timely sludge removal has led to declining plant performance in many facilities throughout the country. In addition to maintaining treatment efficiency, proper sludge management is important for mitigating pathogen levels and providing opportunities for safe beneficial reuse of biosolids. Based on analyses of data collected at waste stabilization ponds in the municipalities of Puerto Cortes and La Lima, sludge was characterized with respect to quantities generated (accumulation rates) and quality (helminths and heavy metals content). A review was conducted of appropriate sludge treatment technologies including sludge drying beds, alkaline stabilization, acid stabilization, anaerobic digestion, and composting. These options were evaluated based on a set of selected criteria. Anaerobic digestion, alkaline stabilization, and composting were all found to be suitable methods of sludge treatment. Alkaline stabilization and composting are well suited to facilities with sufficient land. Anaerobic digestion was recommended for areas with land constraints. Treated biosolids can be beneficially used within the community and/or at a regional scale. Potential regional end-uses include soil amendment in agriculture and forestry, or for land reclamation of mined lands. Public participation and acceptance is essential for the success of a biosolids reuse program. Potential strategies for engaging the community and addressing public concerns regarding biosolids were identified.
by Mahua Bhattacharya.
M.Eng.
Dey, Ayanangshu. "NUTRIENT MANAGEMENT IN ON-SITE WASTEWATER TREATMENT". MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11052009-110323/.
Testo completoLozano, Sacha. "An Ecological Design Approach to Wastewater Management". ScholarWorks @ UVM, 2008. http://scholarworks.uvm.edu/graddis/141.
Testo completoTuan, Tong Anh Sittipong Dilokwanich. "Industrial wastewater management of Nhue river, Vietnam /". Abstract, 2006. http://mulinet3.li.mahidol.ac.th/thesis/2549/cd387/4737900.pdf.
Testo completoTidåker, Pernilla. "Integrating farming and wastewater management : a system perspective /". Uppsala : Dept. of Biometry and Engineering, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200785.pdf.
Testo completoHarper, Stephen Ray. "Evaluation of hydrogen management during anaerobic wastewater treatment". Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/23127.
Testo completoYu, Chi-wing, e 余志榮. "An overview of wastewater management in Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31253015.
Testo completoYu, Chi-wing. "An overview of wastewater management in Hong Kong /". [Hong Kong] : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13814035.
Testo completoTecle, Aregai, e Martin Fogel. "Multiobjective Wastewater Management Planning in a Semiarid Region". Arizona-Nevada Academy of Science, 1986. http://hdl.handle.net/10150/296390.
Testo completoAhmadi, Leila. "Planning and Management Modeling For Treated Wastewater Usage". DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1209.
Testo completoGarza, Octavio Armando. "Food service establishment wastewater characterization and management practice evaluation". Texas A&M University, 2004. http://hdl.handle.net/1969.1/3220.
Testo completoKam, Kwok-hang Dave, e 甘國恒. "Review on the industrial wastewater management in Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31254044.
Testo completoCocozza, Peter Andrew. "Management and technology trends in the wastewater treatment industry". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/31070.
Testo completoKam, Kwok-hang Dave. "Review on the industrial wastewater management in Hong Kong /". Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19945437.
Testo completoTecle, Aregai 1948. "Multicriterion modeling of wastewater management : a comparison of techniques". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/191908.
Testo completoHurse, Timothy John. "Sulfide removal from wastewater by phototrophic microorganisms /". [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16390.pdf.
Testo completoAulinas, Masó Montse. "Management of industrial wastewater discharges in river basins through agents'argumentation". Doctoral thesis, Universitat de Girona, 2009. http://hdl.handle.net/10803/7804.
Testo completoLes contribucions d'aquest treball de recerca són dobles: primer, proposar l'ús d'un enfoc basat en la modelització amb agents per tal de conceptualitzar i integrar tots els elements que estan directament o indirectament involucrats en la gestió de l'aigua residual. Segon, proposar un marc basat en l'argumentació amb l'objectiu de permetre als agents raonar efectivament. La tesi conté alguns exemples reals per tal de mostrar com un marc basat amb agents que argumenten pot suportar diferents interessos i diferents perspectives. Conseqüentment, pot ajudar a construir un diàleg més informat i efectiu i per tant descriure millor les interaccions entre els agents. En aquest document es descriu primer el context estudiat, escalant el problema global de la gestió de la conca fluvial a la gestiódel sistema urbà d'aigües residuals, concretament l'escenari dels abocaments industrials. A continuació, s'analitza el sistema mitjançant la descripció d'agents que interaccionen. Finalment, es descriuen alguns prototips capaços de raonar i deliberar, basats en la lògica no monòtona i en un llenguatge declaratiu (answer set programming).
És important remarcar que aquesta tesi enllaça dues disciplines: l'enginyeria ambiental (concretament l'àrea de la gestió de les aigües residuals) i les ciències de la computació (concretament l'àrea de la intel·ligència artificial), contribuint així a la multidisciplinarietat requerida per fer front al problema estudiat. L'enginyeria ambiental ens proporciona el coneixement del domini mentre que les ciències de la computació ens permeten estructurar i especificar aquest coneixement.
Wastewater management is a very complex task. There is a high number of known and an increasing number of unknown pollutants whose individual and collective effects are very difficult to predict. Identifying and evaluating the impacts of environmental problems resulting from the interactions between our social system and its natural environment is a multifaceted critical issue. Environmental managers require tools to support their diagnoses for solving these problems. The contributions of this research work are twofold: first, to propose the use of an agent-based modelling approach in order to conceptualize and integrate all elements that are directly or indirectly involved in wastewater management. Second, to propose a framework based on argumentation that allows to reason effectively. The thesis provide some real examples to show that an agent-based argumentation framework can deal with multiple interests and different agents' perspectives and goals. This help to build a more effective and informed dialog in order to better describe the interaction between agents. In this document we first describe the context under study, scaling down the global river basins system to the urban wastewater systems and giving some more details for the specific scenario of industrial wastewater discharges. Then, we analyze the system in describing intelligent agents that interact. Finally, we propose some reasoning and deliberation prototypes by using an argumentation framework founded on non-monotonic logics (i.e. permitting to learn things that were previously not known) and the answer set programming specification language (i.e. a declarative programming language). It is important to remark that this thesis links two disciplines: environmental engineering (specifically the area of wastewater management) and computer science (specifically the area of artificial intelligence), contributing to the required multidsciplinarity needed to confront the complexity of the problem under study. From environmental engineering we obtain the domain knowledge whereas the computer science field permits us to structure and specify this knowledge.
Prat, Busquets Pau. "Integrated management of urban wastewater systems: a model-based approach". Doctoral thesis, Universitat de Girona, 2012. http://hdl.handle.net/10803/80837.
Testo completoEl principal objectiu d’aquesta tesi és desenvolupar una metodologia que permeti abordar els problemes de gestió del cicle industrial de l’aigua. La metodologia proposada suggereix estratègies de gestió que poden millorar el rendiment general del sistema en determinades situacions problemàtiques. La metodologia proposada es basa en un model matemàtic de simulació d’aquestes infraestructures i consta de tres passos. El primer pas inclou la caracterització i modelització del cas d’estudi, la definició d’escenaris, criteris d’avaluació i paràmetres d’operació del sistema. En el segon pas, es llancen simulacions Monte Carlo (MC) amb l’objectiu d’avaluar com es comporta el sistema segons diferents estratègies d’operació. Per tal d’identificar els paràmetres d’operació més influents es du a terme una anàlisi global de sensibilitat. Finalment, el tercer pas consisteix en una metodologia d’avaluació basada en solucions Pareto i un anàlisi multicriteri per tal de seleccionar les millors estratègies d’operació.
Schneider, Cory Adam. "Phenotypic fingerprinting as a management tool for wastewater treatment systems". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ45584.pdf.
Testo completoSalman, Baris. "Infrastructure Management and Deterioration Risk Assessment of Wastewater Collection Systems". University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1282051343.
Testo completoTavakkoli, Sakineh. "A Systems-level Approach for Integrated Shale Gas Wastewater Management". Thesis, University of Pittsburgh, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13819974.
Testo completoEconomic benefits of shale gas production in addition to its potential for enabling energy security are driving the strategic development of unconventional natural gas in the U.S. However, shale gas production poses potential detrimental impacts on the surrounding ecosystems. In particular, sustainable management of high salinity wastewater is one of the critical challenges facing shale gas industry. While recycling shale gas wastewater is a practical short-term solution to minimize total water use in the fracturing process it may not be a viable strategy from a long-term management perspective. Moreover, direct disposal into Salt Water Disposal (SWD) wells which is the most common management strategy in the U.S. is not cost effective in Marcellus shale play due to limited disposal capacity.
This work develops a systems-level optimization framework for guiding economically conscious management of high salinity wastewater in Marcellus shale play in Pennsylvania (PA) with a focus on using membrane distillation (MD) as the treatment technology. Detailed technoeconomic assessment (TEA) is performed to assess the economic feasibility of MD for treatment of shale gas wastewater with and without availability of waste heat. Natural gas compressor stations (NG CS) are chosen as potential sources of waste heat and rigorous thermodynamic models are developed to quantify the waste heat recovery opportunities from NG CS. The information from waste heat estimation and TEA are then utilized in the optimization framework for investigating the optimal management of shale gas wastewater. Wastewater management alternatives ranging from direct disposal into SWD wells to advanced centralized, decentralized, and onsite treatment options using MD are included in the optimization model.
The optimization framework is applied to four case studies in Greene and Washington counties in southwest and Susquehanna and Bradford counties in Northeast PA where major shale gas development activities take place. The results of this analysis reveal that onsite treatment of wastewater at shale gas extraction sites in addition to treating wastewater at NG CS where available waste heat could be utilized to offset the energy requirements of treatment process are the most economically promising management options that result in major economic benefit over direct disposal into SWD.
Gaslightwala, Abizer F. (Abizer Firoze) 1973. "Evaluation wastewater treatment technologies at Ford Powertrain". Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9001.
Testo completoIncludes bibliographical references (p. 80).
In preparation for an upcoming EPA proposal regarding Free Oil & Grease (FOG) and metal ion content in wastewater effluent, a study was performed for Ford Motor Company that assesses various seconctary wastewater treatment technologies. The three water purification technologies, membrane filtration, biological treatment, and clay media adsorption, were evaluated as secondary water treatment solutions for oily wastewater. Three different types of membrane technologies were tested: polymeric, ceramic, and sintered stainless steel. In regards to FOG, the membrane technologies and the clay media were able to reduce FOG levels below the EPA proposal of 17 mg/L. However, the clay media did not show a strong affinity for metal ions. The membrane technologies were 'lble to reduce all iron levels below the recommended limits (1.3 mg/L). However, they were not able to reduce aluminum below the proposed limit (I mg/L). This implies that additional downstream processing would be required to remove the aluminum if the membrane solution was implemented and the regulation passes as proposed. The biological wastewater treatment was not tested during these trials, but was assumed to be able to meet all FOG and metal requirements proposed by the EPA. Based on these experimental results and basic design assumptions, an economic analysis over a ten-year period indicated that the biological waste treatment system was the lowest in costs, followed by the polymeric membranes. The estimated installed and operating costs for both technologies was $800,000 and $1,200,000 respectively. The nearest alternative solution, the stainless steel membranes, was over 200% more expensive than the lowest cost option. Based on this economic analysis, Ford should pursue additional research and experiments into the feasibility of using biological wastewater treatment to meet EPA proposed regulations. More specifically, experiments should be conducted to help verify the assumptions used and economic results obtained in this study. As a secondary option, in the absence of additional data, polymeric membranes are recommended as the best solution, despite additional processing needed to remove aluminum ions from water effluent. In addition, the biological waste treatment option has the potential to reduce chemical oxygen demand (COD) measurements below the levels seen by any of the membrane technologies. None of the membrane technologies investigated were capable of reducing COD levels below 200 mg/L on a consistent basis, thus indicating that this might be a fixed barrier for these technologies. Although not relevant today, COD measurements might have significant importance in future EPA water regulations, and should be taken into account when recommending a treatment solution.
by Abizer F. Gaslightwala.
S.M.
Cutbill, Linda Beverley. "Urban stormwater treatment by artificial wetlands". Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266138.
Testo completoReutershan, Trevor. "Chemical Kinetics and Adsorption in Wastewater Treatment Systems". Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10752236.
Testo completoThe purpose of this thesis is to provide a combined theoretical and experimental approach to solve several enduring questions in wastewater chemistry. Firstly, the sulfate radical has been proposed as an alternative oxidant in advanced oxidation processes (AOPs). Its reactivity with dissolved organic matter (DOM) has not yet been studied and will be quantied in this work using electron pulse radiolysis. Next, it has been shown that DOM present in wastewater can act to impede the remediation of harmful pharmaceutical contaminants in the AOP. Using a new binding model presented here, this association was quantied in terms of equilibrium constants. Lastly, due to the use of bleach to prevent biofouling of the membrane bioreactor in wastewater treatment facilities, chlorine atom chemistry is becoming increasingly important to study regarding AOPs. A numerical system is provided in this thesis to understand the reactivity of chlorine atoms in the presence of wastewater constituents.
Lessard, Paul. "Operational water quality management : control of stormwater discharges". Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47538.
Testo completoParkinson, Jonathan Neil. "Modelling strategies for sustainable domestic wastewater management in a residential catchment". Thesis, Imperial College London, 2000. http://hdl.handle.net/10044/1/7449.
Testo completoAl-Gunied, Hussien Alawi. "Environmental impact asssessment of wastewater management in the Republic of Yemen". Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244833.
Testo completoPlana, Puig Queralt. "Automated Data Collection and Management at Enhanced Lagoons for Wastewater Treatment". Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26531.
Testo completoAutomated monitoring stations have been used to monitor and control wastewater treatment plants. Their capability to monitor at high frequency has become essential to reduce the negative impacts to the environment since the wastewater characteristics have an elevated spatial and time variability. Over the last few years, the technology used to build these automatic monitoring stations, for example the sensors, has been improved. However, the instrumentation is still expensive. Also, in wastewater uses, basic problems like fouling, bad calibration or clogging are frequently affecting the reliability of the continuous on-line measurements. Thus, a good maintenance of the instruments, as well as a validation of the collected data to detect faults is required. In the context of this thesis, in collaboration with Bionest®, a methodology has been developed to deal with these problems for two facultative/aerated lagoon case studies in Québec, with the objective of optimizing the maintenance activities, of reducing the fraction of unreliable data and of obtaining large representative data series.
Vedachalam, Sridhar. "Attitudinal, Economic and Technological Approaches to Wastewater Management in Rural Ohio". The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306819286.
Testo completoHodges, Alan J. "Alternative Treatment Technologies for Low-Cost Industrial and Municipal Wastewater Management". DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/5884.
Testo completoKapellakis, Iosif Emmanouil. "Olive mill wastewater management and treatment through soil, aquatic and solidification processes". Thesis, Glasgow Caledonian University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422022.
Testo completoNarasimhan, Gautam G. (Gautam Ganti) 1976. "Dynamic data management and modeling in a lagoon based wastewater treatment plant". Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/80958.
Testo completoIncludes bibliographical references (leaves 72-73).
by Gautam G. Narasimhan.
M.Eng.
Beheshti, Monfared Maryam. "Sustainable Management of Wastewater Transport Systems : a case study in Trondheim, Norway". Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-198470.
Testo completoYaqob, Eyad Y. A. Ph D. ""Prospects for a Shared Management of Transboundary Wastewater Israel-Palestine a case"". University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1459243132.
Testo completoHe, Jiajie Dougherty Mark Lange Clifford R. "Hydraulic management of SDI wastewater dispersal in an Alabama Black Belt soil". Auburn, Ala., 2009. http://hdl.handle.net/10415/1973.
Testo completoCurran, Daniel Thomas. "Phosphate Removal and Recovery from Wastewater by Natural Materials for Ecologically Engineered Wastewater Treatment Systems". ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/455.
Testo completoLong, Larry Dean. "Transport of cryptosporidium through the perched zone of a wastewater recharge basin". Thesis, The University of Arizona, 1998. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1998_341_sip1_w.pdf&type=application/pdf.
Testo completoGraan, Daniel, e Rasmus Bäckman. "Energy recovery at Chişinȃu wastewater treatment plant". Thesis, University of Skövde, School of Technology and Society, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4080.
Testo completoPossibilities for energy recovery from sludge at Chişinȃu wastewater treatment plant have been investigated and evaluated. One way of recovering energy from sludge is to produce biogas through anaerobic digestion. Which method of biogas usage that is to prefer in Chişinȃu has been evaluated from a cost-efficiency point of view. There is a possibility that a new waste incineration plant will be built next to the wastewater treatment plant, and therefore solutions that benefit from a co-operation have been discussed. The results show that biogas production would be suitable and profitable in a long time perspective if the gas is used for combined heat and power production. Though, the rather high, economical interest rates in Moldova are an obstacle for profitability.
Vagadia, Aayushi R. "Comparison of Bacterial and Viral Reduction across Different Wastewater Treatment Processes". Thesis, University of South Florida, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10977800.
Testo completoToday billions of people live without access to basic sanitation facilities, and thousands die every week due to diseases caused by fecal contamination associated with improper sanitation. It has thus become crucial for decision makers to have access to relevant and sufficient data to implement appropriate solutions to these problems. The Global Water Pathogen Project http://www.waterpathogens.org/ is dedicated to providing an up-to-date source of data on pathogen reduction associated with different sanitation technologies that are important if the world is to achieve the Sustainable Development Goals (SDGs) related to health and sanitation provision. In this research, a subset of the Global Water Pathogen Project (GWPP) data is used to access the reduction of bacteria and viruses across different mechanical and natural sanitation technologies. The order of expected removal for bacteria during wastewater treatment was reported as highest for a membrane bioreactor (4.4 log10), waste stabilization pond (2.3 log10), conventional activated sludge (1.43 log10), anaerobic anoxic oxic activated sludge (1.9 log10), trickling filter (1.16 log10), and upflow anaerobic sludge blanket reactor (1.2 log10).
Furthermore, the order of expected removal for viruses was reported as highest for a membrane bioreactor (3.3 log10), conventional activated sludge (1.84 log10), anaerobic anoxic oxic activated sludge (1.67 log10), waste stabilization pond (1 log10), upflow anaerobic sludge blanket reactor (0.3 log10) and trickling filter (0.29 log10). It was found that hydraulic retention time (HRT) had a statistically significant relation to the reduction of bacteria in an anaerobic, anoxic oxic treatment system. Similarly, a significant relation was found between the number of waste stabilization ponds in series and the expected reduction of bacteria. HRT was also found to be a significant factor in virus reduction in waste stabilization ponds. Additionally, it was observed that waste stabilization ponds, trickling filters, and UASB reactors could obtain a greater reduction in bacteria (5–7 log10) when combined with additional treatment (e.g., chemical disinfection or use of maturation ponds). Also, mechanized systems, such as activated sludge systems and membrane bioreactors, obtained a greater reduction (2–3 log10) of viruses when compared to a natural system. It was concluded that the selection of the best suitable technology for pathogen reduction depends on environmental, design, and operational factors as well as considering the performance of specific wastewater treatment systems individually as well as when combined with other treatment technologies that may provide added removal of microbial constituents.
Shamir, Eylon. "Nitrogen Accumulation In A Constructed Wetland For Dairy Wastewater Treatment". Thesis, The University of Arizona, 1998. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0014_m_sip1_w.pdf&type=application/pdf.
Testo completoRémy, Christian. "Life cycle assessment of conventional and source separation systems for urban wastewater management /". kostenfrei, 2010. http://opus.kobv.de/tuberlin/volltexte/2010/2543/.
Testo completoRemy, Christian. "Life cycle assessment of conventional and source-separation systems for urban wastewater management". Clausthal-Zellerfeld Papierflieger, 2010. http://d-nb.info/1000877817/04.
Testo completoRoxendal, Tara. "Designing Sustainable Wastewater Management : A case study at a research farm in Bolivia". Thesis, Institutionen för energi och teknik, Sveriges lantbruksuniversitet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-174255.
Testo completoEl saneamiento y gestión sostenible de las aguas residuales es de creciente importancia en los tiempos modernos. Los recursos naturales son cada vez más escasos y valiosos. Mas aún, la falta del manejo adecuado de aguas residuales es causa importante de la degradación de los recursos restantes. La creciente urbanización en las zonas periurbanas acentúa la necesidad de encontrar e implementar soluciones sostenibles en el manejo de aguas residuales. En estas zonas dicho manejo (colección y tratamiento de aguas residuales) es deficiente. Como consecuencia se percibe una contaminación continua de las aguas subterráneas en estas condiciones. El objetivo del estudio realizado fue diseñar un sistema de gestión de aguas residuales más sostenible para la granja Ceasip ubicada en la zona periurbana de Santa Cruz de la Sierra, Bolivia. El estudio se enfoca principalmente en el manejo de las aguas residuales domésticas y su posible reutilización en la agricultura. Sin embargo, cabe mencionar que las aguas residuales en la granja Ceasip provienen también de otras actividades. Para el concepto de sostenibilidad de este proyecto, son prioritarios los criterios de prevención de la contaminación del agua subterránea, la reducción del consumo de agua y el reciclaje de nutrientes. La metodología de estudio consistió en varias etapas. Después de una extensa revisión de la literatura existente diferentes opciones de gestión fueron evaluadas de acuerdo con los criterios de sostenibilidad antes mencionados. Para hacer una elección de un tratamiento adecuado, se realizaron compilaciones y procesamiento de datos con respecto a los flujos y la calidad de aguas, las condiciones geomorfológicas, climáticas así como la evaluación de algunos parámetros ambientales, sociales, técnicos, económicos, y de salubridad. En las condiciones actuales, los resultados de las evaluaciones de la granja, resaltaron aspectos críticos sobre los que se propusieron algunos tratamientos alternativos; por ejemplo el aumento en el reciclaje de nutrientes así como la reducción de los niveles de nitrógeno en las aguas residuales. La separación de la orina se consideró de gran importancia para la gestión apropiada de las aguas residuales de Ceasip. Al final se sugirieron dos posibles alternativas para el diseño del tratamiento de aguas, la utilización de lagunas o de lechos filtrantes con arena, cuya contribuiría positivamente tanto como para el entorno local y el personal de la granja así como para la comunidad en general, sirviendo como ejemplo para otros establecimientos.
Hållbar sanitet och avloppsvattenhantering är av ökande vikt runt om i världen. Resurser blir allt knappare och mer värdefulla medan bristen på hållbar hantering även skapar problem och degradering av återstående resurser. På grund av den ökande urbaniseringen är grundvattnet i städernas periferier speciellt utsatt eftersom avloppsvattenhantering saknas där. Syftet med denna studie är att designa en mer hållbar avloppsvattenhantering för gården Ceasip i peri-urbana Santa Cruz de la Sierra, Bolivia. I nuläget saknas en lämplig lösning på gården. Av de olika typerna av avloppsvatten på gården, fokuserar denna studie främst på avloppsvattnet från hushåll och möjligheterna att återanvända det inom jordbruket. För hållbarhetskonceptet i uppsatsen, prioriteras följande kriterier: skydd av grundvattnet, minskning av grundvattenkonsumtion och näringsåtervinning. En litteraturstudie gjordes över olika avloppsvattenhanteringsalternativ som sedan utvärderades enligt hållbarhetskriterierna. För att bestämma det mest lämpliga hanteringsalternativet, samlades data och information om vattenflöden, vattenkvalitéer, klimat, geomorfologi och även för miljö, teknik, hälsa, ekonomi och kultur. Resultaten från sammanställningen visade på olika egenskaper från vilka lämplig hantering bestämdes. För att öka återvinningen av näringsämnen och minska kvävekoncentrationerna i avloppsvattnet, visade det sig vara lämpligt att använda urinsortering. Två behandlingsalternativ designades, och det föreslogs antingen behandlingsdammar eller förstärkta infiltrationsanläggningar. Då någon av dessa alternativ tillämpas på Ceasip skulle man även kunna påverka lokalt och regionalt genom att sätta ett bra exempel.
Yee, Lai-wan, e 余麗容. "The efficiency of the charging system for industrial wastewater management in Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B30101062.
Testo completo