Дисертації з теми "Biological treatment systems"
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Tjernström, Linnéa. "Function of soil-based on-site wastewater treatment systems - Biological and chemical treatment capacity." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210716.
Повний текст джерелаDecentraliserade system för rening av avloppsvatten är bland de huvudsakliga svenska antropogena källorna till näringsämnen som bidrar till övergödning av Östersjön. Bland decentraliserade system i Sverige är nästan hälften system med slamavskiljare följt av ett markbaserat system i vilket avloppsvattnet renas genom infiltration i jord. I denna studie studeras en markbaserad teknik i vilken avloppsvattnet filtreras genom sand, en så kallad markbädd. En fältundersökning gjordes där samlingsprov av ingående och utgående avloppsvatten togs på två markbäddar i Stockholmsområdet för att bestämma deras biologiska och kemiska reningsfunktion samt att jämföra avskiljningen av fosfor i systemen med rekommendationer från HaV. Parametrar som inkluderats i studien är totalfosfor, ammonium-kväve, löst organiskt kol, pH, turbiditet och löst syre. Biologisk funktion ansågs bra i båda markbäddarna eftersom nitrifikationen var hög och utgående vatten hade tillräckliga halter av löst syre vilket implicerar att markbäddarna var väl syresatta. Rådande syrerika förhållanden i markbäddarna antyder också att organiskt material bryts ned avsevärt, vilket är fallet för löst kol som reducerades med mer än 85 % i en av markbäddarna och med nästan 70 % i den andra. Den höga reduktionen av organiska mikroföroreningar som påvisats i markbäddarna i en annan studie tyder också på att biologisk funktion med avseende på avsklijning av organiska substanser är bra. Kemisk funktion, med avseende på avskiljning av totalfosfor, var inte tillräcklig då ingen av markbäddarna levde upp till reduktionskraven från HaV för normal eller hög skyddsnivå. Totalfosfor avskiljdes med 42 respektive 54 % i markbäddarna. En nackdel med metoden som användes i studien är att de resultat som fåtts för avkiljning av de olika parametrarna endast kan representera den verkliga situationen om variationer i in- och utgående flöde samt variationer i ingående vattenkoncentrationer är små och om utspädningseffekten av utgående vatten är försumbar.
Wells, Charles Digby. "Tertiary treatment in integrated algal ponding systems." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1006162.
Повний текст джерелаMacpherson, Alisdair N. "New sensitisers for photodynamic therapy : a photophysical study in model and biological systems." Thesis, Keele University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305882.
Повний текст джерелаWoudneh, Million Bekele. "Mechanisms and factors affecting removal of herbicides by biological filters." Thesis, University of Surrey, 1996. http://epubs.surrey.ac.uk/843258/.
Повний текст джерелаGiles, Hamilton. "Biotransformation potential of phytosterols in biological treatment systems under various redox conditions." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/48993.
Повний текст джерелаCameron, Kimberley A. "The efficiency and mechanisms for pollutant removal in biological wastewater treatment systems /." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33724.
Повний текст джерелаEdwards, Justin Kenneth. "Reed bed systems for the treatment of wastewaters and for sludge dewatering." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343453.
Повний текст джерелаRodriguez-Gonzalez, Laura C. "Advanced Treatment Technologies for Mitigation of Nitrogen and Off-flavor Compounds in Onsite Wastewater Treatment and Recirculating Aquaculture Systems." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6941.
Повний текст джерелаRamjohn, Jamal Stephen. "The use of solar aquatic biological wastewater treatment systems in sustainable community design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/MQ47650.pdf.
Повний текст джерелаSanyahumbi, Douglas. "Capsule immobilisation of sulphate-reducing bacteria and application in disarticulated systems." Thesis, Rhodes University, 2004. http://hdl.handle.net/10962/d1003994.
Повний текст джерелаSmith, Jennifer Mary. "Detection of Ammonia-Oxidizing Beta-Proteobacteria in Swine Waste Treatment Systems." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-09162004-173714/.
Повний текст джерелаStocks, Justine L. "Enhancement of Two Passive Decentralized Biological Nitrogen Removal Systems." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7093.
Повний текст джерелаRasheed, Adamu Abubakar. "Advances in the use of aerobic sequencing batch reactors for biological wastewater treatment." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=233113.
Повний текст джерелаPratt, Steven. "The development of the TOGA sensor for the study of biological wastewater treatment systems /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17251.pdf.
Повний текст джерелаLishman, Lori-Ann. "The influence of substrate and temperature on biological nitrogen removal in wastewater treatment systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0028/NQ30622.pdf.
Повний текст джерелаHodkinson, Brenden James. "The sewage treatment capability of non-backwash biological aerated filter systems for small communities." Thesis, University of Portsmouth, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368839.
Повний текст джерелаLakshminarasimman, Meanakshisek Narasimman. "Evaluating the Fate Mechanisms of Trace Organic Compounds in Biological Nutrient Removal Treatment Systems." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1479818400753707.
Повний текст джерелаGomez-Rivera, Francisco. "Exploration of Biological Treatment Systems for the Removal of Persistent Landfill Leachate Contaminants and Nanoparticles." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145311.
Повний текст джерелаTezel, Ulas. "Fate and effect of quaternary ammonium compounds in biological systems." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28229.
Повний текст джерелаCommittee Chair: Pavlostathis, Spyros G.; Committee Member: Huang, Ching-Hua; Committee Member: Hughes, Joseph B.; Committee Member: Sobecky, Patricia A.; Committee Member: Spain, Jim C.
Tingey, David. "Estimation and control of some classes of dynamical systems with application to biological wastewater treatment." Thesis, Northumbria University, 2007. http://nrl.northumbria.ac.uk/1222/.
Повний текст джерелаPayne, Karl A. "Mathematical and Numerical Modeling of Hybrid Adsorption and Biological Treatment Systems for Enhanced Nitrogen Removal." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7702.
Повний текст джерелаMbwele, Lydia Ambakisye. "Microbial Phosphorus Removal in Waste Stabilisation Pond Wastewater Treatment Systems." Licentiate thesis, KTH, School of Biotechnology (BIO), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3876.
Повний текст джерелаWaste Stabilisation Ponds (WSPs) are characterised by low phosphorus (P) removal capacity. Heterotrophic bacteria are principal microbial agents in WSPs in addition to algae. As treatment proceeds in WSPs, algal growth increases and pH rises, this has lead to believe that P removal is mainly through sedimentation as organic P algal biomass and precipitation as inorganic P. In activated sludge treatment plants (AS), microbial P removal has been improved and is termed as enhanced biological phosphorus removal. There was a need to establish whether it was possible to enhance P removal in WSPs. A performance assessment of pond system at the University of Dare s Salaam (UDSM), Tanzania, has shown that 90% of the P removed was in the primary pond (facultative) and the rest in the maturation pond (aerobic).
In these studies, a pure strain A. hydrophyla was isolated from an activated sludge wastewater treatment plant in Sweden. This plant has a train that functions with enhanced biological phosphorus removal. The strain was tested for P uptake in minimal media supplemented with glucose, succinate or acetate, grown aerobically and anaerobically/aerobically. This strain was able to take up P without having been subjected to the anaerobic phase. It was observed that P uptake was enhanced after the anaerobic phase with media supplemented with glucose, but not with succinate or acetate. Phosphorus uptake repeatedly followed the bacterial growth pattern with correlation coefficients of more than 95%. Therefore P removal has a direct correlation with bacterial growth.
Two isolates Acinetobacter sp. (isolated from the primary facultative pond) and E .coli (isolated from the maturation pond) were obtained from a tropical WSP treatment system at the UDSM. They were subjected to aerobic P uptake experiment similar to those of A.hydrophyla. The uptake per unit absorbance of bacterial growth was found to be comparable to that of A.hydrophyla, isolated from AS. These results showed that heterotrophic activity is important in WSPs. It is possible to enhance P removal in these systems by designing the primary ponds for maximum heterotrophic activity and probably enrichment.
Westensee, Dirk Karl. "Post-treatment technologies for integrated algal pond systems." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1018180.
Повний текст джерелаPalazolo, Paul Joseph. "Use of genetic algorithms in bounded search for design of biological nitrification/denitrification waste treatment systems." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/32777.
Повний текст джерелаAsiedu, Kofi. "Evaluating Biological Treatment Systems: (i) Moving Bed Biofilm Reactor versus Biological Aerated Filtration, and (ii) Sulfide-Induced corrosion in Anaerobic Digester Gas Piping." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/35156.
Повний текст джерелаThe first section evaluated and compared the performance of a laboratory-scale MBBR and BAF for organic carbon and suspended solids removal. A kinetic study was also performed on the MBBR to evaluate the system performance. The purpose was to recommend one of the systems for the Force Provider project, which provides a containerized "city" for the U.S. Army. The effluent criteria against which the systems were evaluated were total 5-day biochemical oxygen demand (TBOD5) and total suspended solids (TSS) of 30 mg/L each. The report is based on a 5-month laboratory -scale study of the two reactors.
The MBBR performance depended on the percent of media provided in the reactor and the organic loading. At a media volume, which displaced the reactor volume by 40 % (heretofore called 40 % media volume), and surface area loading rate (SALR) of 20 g BOD5/m2-d, the system performance deteriorated with time. At 40 % media volume and SALR below 15 g BOD5/m2-d, the system performance improved but still did not meet effluent criteria or average. TBOD5 reduction was generally poor (approximately 50 %). Soluble BOD5 (SBOD5) concentrations were frequently below 30 mg/L and TSS concentrations were often higher than influent TSS. Overall, TSS wastage from the system (both effluent TSS and intentional wastage) averaged 0.032 kg/d.
BAF system performance was excellent for TBOD5, CBOD5, SBOD5 and TSS removal, and were consistently less that 30 mg/L. Overall TSS wastage from the BAF (both via effluent and backwash) average 0.027 kg/d and was 16 % less than for the MBBR. Based on demonstrated performance, the BAF was the only viable reactor for the project.
Section II of the report focused on possible causes of deposition in an anaerobic digester gas piping at a local wastewater treatment facility (Peppers ferry regional wastewater treatment facility).
Industrial waste input to the treatment facility has increased lately and accounts for 40 % of the plant's wastewater inflow. An industry in Pulaski, VA, Magnox Inc. generates and disposes highly concentrated sodium sulfate, (70,000 mg/L) which is a by-product of its activities, to PFRWTF wastewater influent stream. As a result of Magnox industrial waste input, a pilot study was carried out to determine the effect of its waste on the activated sludge treatment units. Results indicated that Magnox industrial waste input would not have adverse effect on the aeration basins. However production of H2S, which can have effect on the anaerobic digester was reported (Olver Inc., 1995). Field analysis of data reported by Olver Inc. (2000) showed that H2S concentration in PFRWTF anaerobic digester gas was rising. X-ray photoelectron spectroscopy analysis of deposits found in the digester pipe together with results obtained from the laboratory-scale study revealed that iron and sulfur played a role in the deposition in the digester gas pipe. The laboratory scale study revealed that ferrous ion in the digester feed possibly precipitated over 90 % of the hydrogen sulfide gas produced in the digester, thus protecting the digester from adverse effects caused by hydrogen sulfide.
Master of Science
Scherman, Patricia Ann (neé Goetch). "The microbial production of polyphenol oxidase enzyme systems and their application in the treatment of phenolic wastewaters." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1004108.
Повний текст джерелаFortin, Nathalie. "Molecular characterization of dechlorination potential in kraft pulp mill effluent treatment systems." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27317.
Повний текст джерелаNelson, Mark. "Conceptual design of zero discharge and safe discharge biological wastewater treatment systems using fast-growing wetland trees." Thesis, The University of Arizona, 1995. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1995_341_sip1_w.pdf&type=application/pdf.
Повний текст джерелаMiriyala, Amulya. "Impact of Recirculating Nitrified Effluent on the Performance of Passive Onsite Hybrid Adsorption and Biological Treatment Systems." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7697.
Повний текст джерелаHajaya, Malek Ghaleb. "Fate and effect of quaternary ammonium antimicrobial compounds on biological nitrogen removal within high-strength wastewater treatment systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41113.
Повний текст джерелаScott, Robert Nigel. "Algal and related biological studies of reservoirs in South Wales with reference to management of water treatment systems." Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238187.
Повний текст джерелаRodríguez-Caballero, Adrián. "Fugitive green-house gas emissions during biological wastewater treatment: investigating sources and mitigation strategies in laboratory and full-scale systems." Doctoral thesis, Universitat de Girona, 2015. http://hdl.handle.net/10803/361394.
Повний текст джерелаL’acceleracio en l’escalfament global i el canvi climatic son consequencia de l’increment exponencial de la concentracio de gasos d’efecte hivernacle en l’atmosfera degut, en part, a l’activitat humana. Estudis cientifics publicats recentment apunten a alguns sistemes de tractament d’aigues residuals com a fonts rellevants de gasos d’efecte hivernacle com l’oxid nitros (N2O) i el meta (CH4). A mes, l’oxic nitric (NO), un potent destructor de la capa d’ozo a mes de ser un precursor del N2O, tambe pot ser emes durant el tractament d’aigues residuals. Degut a l’alt potencial d’escalfament atmosferic del N2O i el CH4, l’emissio d’aquests gasos (inclus a baixes concentracions) pot ser rellevant, incrementant de forma significativa la petjada ecologica dels sistemes de tractament d’aigues residuals.
Ribera, Pi Judit. "Hybrid systems for wastewater treatment in the framework of circular economy : coupling biological and membrane technologies for a sustainable water cycle." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/668391.
Повний текст джерелаLa creixent demanda d'aigua i l'esgotament de les fonts naturals ha generat la necessitat d'investigar i desenvolupar nous tractaments d'aigua així com la seva reutilització. L'aplicació dels principis de l'economia circular al cicle de l'aigua ha posat de manifest la necessitat de percebre les aigües residuals com a font d'aigua i recursos. Així dones, la hibridació de tecnologies ja desenvolupades pot ajudar a complir els objectius de l'economia circular. A més, aquests sistemes híbrids són capaços de superar les limitacions deis tractaments convencionals. Així dones , en aquesta tesi, s'han desenvolupat i provat diferents sistemes híbrids (a escala de banc de proves i pilot) per al tractament d'aigües residuals urbanes i industrials. D'una banda, s'han operat tres configuracions de reactors UASB (Upflow Anaerobic Sludge Blanket) per comparar la posada en marxa, la hidrólisi dels sòlids i qualitat de l'efluent. Aquestes configuracions eren: biomassa flocular, biomassa flocular amb separació per membrana i biomassa granular amb separació per membrana (UASB-AnMBR). Els reptes d'aquest treball han estat tant la baixa temperatura com el baix contingut en DQO. La posada en marxa ha estat molt ràpida per als tres reactors, atribuïda a l'aclimatació prèvia dels fangs . Els resultats mostren que una configuració basada en UASB-AnMBR amb biomassa flocular ha estat adequada peral tractament d'aigües residuals urbanes amb baix contingut en DQO a 10°C. D'altra banda, s'ha investigat un AnMBR per al tractament de xerigot i la seva codigestió amb purí amb l'objectiu de recuperar aigua i energia . S'ha aconseguit una elevada eliminació de DQO (91% ± 7%) amb una producció de biogàs de 0,2 a 0,9 m3 de biogàs/kg de DQO eliminada. Per tant, es calcula que es podria obtenir una elevada recuperació d'energia amb un valor mitja de 2,4 kW/kg de DQO eliminada. Tot i que s'ha validat directament la recuperació d'energia, s'han detectat diverses limitacions en relació amb la reutilització de l'aigua. Aquestes limitacions inclouen una elevada concentració de sal en el permeat, que caldria eliminar abans de la seva reutilització. A més, s'ha optimitzat el pretractament pera aigües residuals petroquímiques amb l'objectiu de reciclar l'aigua. Aquest ha consistit en una coagulació-floculació (CF) seguida d'un MBBR (Moving Bed Biofilm Reactor) per tal de disminuir els sòlids en suspensió (SS) i el contingut orgànic. En aquest cas, només s'ha optimitzat la primera part del sistema híbrid ja que no s'han inclòs les etapes de membrana en aquest treball. Les proves de CF han mostrat una disminució de la terbolesa de les aigües residuals sense eliminació significativa de DQO. Aquest efluent s'ha tractat per MBBR. A I'MBBR s'ha mantingut una elevada eficiència d'eliminació de DQOs (80-90%). Els resultats obtinguts mostren que el MBBR és una tecnologia adequada per al pretractament de les aigües residuals petroquímiques. Finalment, s'ha estudiat una nova estratègia de tractament de lixiviats d'abocador per disminuir el seu impacte ambiental. El sistema s'ha basat en un pretractament amb bioreactor de membrana (MBR) pera l'eliminació de DQO, Ni SS seguit d'un tractament combinat d'osmosi inversa-electrodiàlisi reversible (01-EDR) pera l'eliminació de sals i disminució el volum de salmorra . L'MBR ha disminuït el carboni inorgànic en un 92 ± 8% i ha aconseguit una eliminació de N del 85%. Gracies a les etapes d'OI i EDR, la recuperació mitjana de tot el sistema ha superat el 90%. És important destacar que en aquest estudi s'han utilitzat membranes regenerades d'OI al final de la seva vida útil. Aquest fet, juntament amb el baix volum de salmorra {<10%) ha contribuït a disminuir !'impacte ambiental del tractament de lixiviats. Per tant, aquesta tesi s'ha dut a terme des d'un enfoc de recerca aplicada, amb l'objectiu de reduir la bretxa entre el desenvolupament tecnològic basic i la implementació industrial
Hart, Vincent S. "An examination of biological phosphorus removal using bacterial counting and poly-β-hydroxybutyrate analysis in batch and continuous flow systems". Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/40652.
Повний текст джерелаMaster of Science
Venckus, Julius. "Rekonstruotos Jurbarko nuotekų valyklos efektyvumas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100616_103144-42430.
Повний текст джерелаThe paper examined the reconstructed Jurbarkas domestic wastewater treatment plants performance. Purpose of the survey - the wastewater treatment plant efficiency of aeration system reconstruction. The object of research - Jurbarkas domestic wastewater treatment plants enters an aeration system that was installed in 2008. To achieve these goals has been to move the following tasks: a theoretical description of the biological treatment plant, which affect the biological treatment process and evaluate the effectiveness of the active sludge system changes, the efficiency of wastewater remediation Jurbarkas wastewater treatment facilities, to carry out a comparative analysis of linear and circular aeration system, the sewage treatment plant Jurbarkas electricity costs. Sewage treatment plant efficiency has been studied by BOC7 nitrogen (Nb), phosphorus (Pb) elimination of the water before aeration system replacement and the replacement of aeration systems. The investigation showed that sewage treatment facilities after renovation work reliably. Effluent residual contamination does not exceed the MRL. BOC7 treated water decreased by 16%, total nitrogen (Nb) - 27%, and total phosphorus (Pb) - 56%, compared with BOC7, Nb and Pb before aeration system replacement. Chemical reagent process steps used 488.8 kg/m and less, while at the same time is 22295.2 Lt/m. less cost. Electricity costs have fallen about 14 percent.
Halvarsson, Björn. "Interaction Analysis in Multivariable Control Systems : Applications to Bioreactors for Nitrogen Removal." Doctoral thesis, Uppsala universitet, Avdelningen för systemteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122294.
Повний текст джерелаMartis, Prithy Caroline. "RENCA macrobeads inhibit tumor cell growth via EGFR activation and regulation of MEF2 isoform expression." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1597229612949836.
Повний текст джерелаLarsen, Julie Melissa. "Measuring dinitrogen gas emissions from a lagoon treatment system." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-01052004-223912/.
Повний текст джерелаHoltman, Gareth Alistair. "Design, installation, and assessment of a biological winery wastewater treatment system." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2573.
Повний текст джерелаCurrently in South Africa, most wastewater from small cellars is pH-adjusted and disposed of via land irrigation. This practice can lead to environmental degradation. There is a need for low cost, low maintenance solutions for the treatment of cellar effluent. Constructed wetlands provide such an option. However, the use of plants is problematic because winery effluent can be phytotoxic. After successful initial laboratory-scale experiments, an in-situ pilot scale biological sand filter (unplanted constructed wetland) system was designed, installed, and used to treat effluent from a small winery in the Western Cape, South Africa. The system is off-grid, totally self-regulating, and uses a modular approach which allows for the addition and subtraction of filter modules within the system to alter treatment capacity, retention time and/or rest filter modules. The system can be easily integrated into existing settling basins and/or retention ponds at small wineries. The biological sand filter was operational for 610 days, and showed promising results. The average chemical oxygen demand removal efficiency was 81% (range: 44-98%) with an average effluent of 324 mg/L, and an average flow rate of 413 L/day after the acclimation (start-up) period. The average hydraulic loading rate after the initial start-up period was 143 L/m3 sand day-1 (range: 67-222/m3 sand day-1), with an organic loading rate of 205 gCOD/m3 of sand day-1 (range: 83-338 gCOD/m3 sand day-1) which resulted in an organic removal rate of 164 gCOD/m3 of sand day-1. There was an average of 67% removal of total phenolics, thereby reducing the potential phytotoxicity of the effluent. In addition, there was a 1.6 times increase in calcium concentration, a 29% decrease in the average sodium adsorption ratio, and complete passive neutralisation of the acidic winery wastewater (final effluent pH range: 6.63 – 8.14. The findings of this study compare well with previous laboratory studies conducted with synthetic and authentic winery effluent. The system can potentially provide a low cost, energy efficient, low maintenance, sustainable means of treating cellar effluent at small wineries. Uptake of this technology may alleviate environmental degradation caused by irrigating land with inadequately treated effluent.
MACOMBER, JEFF RAYMOND. "EFFECTS OF SOLIDS RETENTION TIME ON THE TREATMENT OF SYNTHETIC WASTEWATER USING A MEMBRANE BIOREACTOR." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin981401531.
Повний текст джерелаMd, Som Ayub. "Development of a process selection model for industrial wastewater treatment using an expert system." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244969.
Повний текст джерелаBengtsson, Erica, and Sannam Hjertstrand. "Hybrid system for wastewater treatment in multifunctional wetlands - A case study at UNIVATES in Lajeado, RS, Brazil." Thesis, Halmstad University, School of Business and Engineering (SET), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1604.
Повний текст джерелаAbstract
Centro Universitaire UNIVATES is located in the town Lajeado that is situated in the most southerly state, Rio Grande Do Sul, in Brazil. The university has 5000 students, teachers and others staff. UNIVATES is not satisfied with their present wastewater situation and wants to improve it by eliminate the smell caused by the wastewater. They would also like to remove the oil that the storm water brings into the wetland. The high amount of particles in the storm water gives rise to a lot of sediments that eventually will fill up the wetland, and something has to be done about this, if the wetland should continue to be in use. Another aspect to consider is the wish of some people at UNIVATES, for the wetland to be a beautiful and recreational place. All these factors had to be considered, which led to the main question: How can the use of the wetland for wastewater treatment be combined with the request for the wetland to be a beautiful place with the wildlife preserved?
During the course Wetland Technology that we took before our departure to Brazil, we got introduced to the situation at UNIVATES by Professor André Jasper and Odorico Konrad who visited the course several times. They pointed out that the main issue is the smell from the wastewater and later during the field study at UNIVATES, more information were obtained through discussions, meetings and conversations with the people involved. Several visual inspections were carried out by walking around the wetland. We could determine where and how the inlets and outlets to the wetland were and when it was clear which inlets that brought wastewater and which that brought storm water, the water flow of the wastewater was estimated. Water samples from the wetland were collected at five different sites and analyses of pH, BOD, COD, N-Tot, phosphorus and metals were done by the accredited laboratory at UNIVATES. To test some of our theories, we did a smaller practical experiment that got the name Superficial Filtration Bed.
The results from the water samples showed the highest BOD, COD, N-Tot and Phosphorus levels in the samples from site 2 and 4 and this reveals that it is wastewater. This was also confirmed by the smell that we felt at these sites during the visual inspections. The results also showed that there is no wastewater coming from site 1, 3 and 5.
Our final proposal is to create a multifunctional wetland with the purpose to take care of both storm water and wastewater and at the same time work as a research and recreational area. The wetland, which would be divided into two parts, will constitute of all the fundamental functions; storm water buffering, sedimentation basin and biological oil separation and treatment. There will also be research sites and hybrid system for wastewater treatment. The hybrid system will consist of two steps where the first is aerobic and the second both aerobic and anaerobic. The first step is a Superficial Filtration Bed (SFB) and the second a FWS wetland.
The conclusion of this thesis is that more detailed research is needed to be able to dimension the specific functions correctly. With some further investigations the proposal presented is possible to carry through and our feeling when we left UNIVATES was that the people responsible really liked our ideas. They made it clear that they want to make a change and improve the situation and with the help they have gotten from us, they are a few steps closer to solving the problem.
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Повний текст джерелаMaster of Science
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