Thèses sur le sujet « Sewage sludge anaerobically digested »
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Qi, Yinan. « Effect of centrifugal dewatering on the regrowth of fecal coliforms and Salmonella in anaerobically digested biosolids ». Access to citation, abstract and download form provided by ProQuest Information and Learning Company ; downloadable PDF file, 192 p, 2008. http://proquest.umi.com/pqdweb?did=1601522491&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Texte intégralPrincipal faculty advisors: Steven K. Dentel, Dept. of Civil & Environmental Engineering; and Diane S. Herson, Dept. of Biological Sciences. Includes bibliographical references.
Turkmen, Muserref. « Sulfur-containing odorants and the effects of high salinity in anaerobically digested biosolids ». Access to citation, abstract and download form provided by ProQuest Information and Learning Company ; downloadable PDF file, 224 p, 2007. http://proquest.umi.com/pqdweb?did=1257807571&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Texte intégralNash, Jeffrey William. « Characteristics and conditioning of anaerobically digested sludge from a biological phosphorus removal plant ». Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44128.
Texte intégralMaster of Science
Carliell-Marquet, Cynthia. « The effect of phosphorus enrichment on fractionation of metals and phosphorus in anaerobically digested sludge ». Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/17074.
Texte intégralGu, Xiangyang. « Improving heavy metal bioleaching efficiency through microbiological control of inhibitory substances in anaerobically digested sludge ». HKBU Institutional Repository, 2003. http://repository.hkbu.edu.hk/etd_ra/504.
Texte intégralCRISTINA, GIULIO. « The hidden potential of digested sewage sludge : a recycling approach to combat desertification ». Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2903484.
Texte intégralChan, Lau Chi. « Bioleaching of heavy metals from anaerobically digested sewage sludge using isolated indigenous iron- and sulphur-oxidizing bacteria ». HKBU Institutional Repository, 2001. http://repository.hkbu.edu.hk/etd_ra/279.
Texte intégralHuezo, Sanchez Luis. « Technical, economic, and carbon dioxide emission analyses of managing anaerobically digested sewage sludge through hydrothermal carbonization ». The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587121997256614.
Texte intégralDogan, Ilgin. « Combination Of Alkaline Solubilization With Microwave Digestion As A Sludge Disintegration Method : Effect On Gas Production And Quantity And Dewaterability Of Anaerobically Digested Sludge ». Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609685/index.pdf.
Texte intégralMW pretreatment alone and combined pretreatments of MW+pH-10 and MW+pH-12 pretreated WAS samples were anaerobically digested in small scale batch anaerobic reactors. In correlation with the highest protein and carbohydrate releases with MW+pH-12, highest total gas and methane productions were achieved with MW+pH-12 pretreatment reactor with 16.3% and 18.9% improvements over control reactor, respectively. Finally the performance of MW+pH-12 pretreatment was examined with 2L anaerobic semi-continuous reactors. 43.5% and 53.2% improvements were obtained in daily total gas and methane productions. TS, VS and TCOD reductions were improved by 24.9%, 35.4% and 30.3%, respectively. Pretreated digested sludge had 22% improved dewaterability than non-pretreated digested sludge. Higher SCOD and NH3-N concentrations were measured in the effluent of pretreated digested sludge
however, PO4-P concentration did not vary so much. Heavy metal concentrations of all digested sludges met Soil Pollution Control Regulation Standards. Finally a simple cost calculation was done for a MW+pH-12 pretreatment of WAS for a fictitious WWTP. Results showed that, WWTP can move into profit in 5.5 years.
Straub, Timothy Mark 1963. « Inactivation of bacteriophages MS-2 and PRD1 and poliovirus type 1 in Pima Clay Loam and Brazito Sandy Loam soils amended with anaerobically digested sewage sludge ». Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277884.
Texte intégralLau, Shiew Wei. « Conditioning and dewatering of anaerobically digested sludge from municipal wastewater treatment processes ». Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/1594.
Texte intégralGeminiani, Andrea. « Sustainable valorization of digested sewage sludge into added-value products ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Trouver le texte intégralGalvagno, Giampiero. « Sidestream control of dissolved nutrients in anaerobically digested sludge centrate using anammox and chemical precipitation ». Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59775.
Texte intégralApplied Science, Faculty of
Engineering, School of (Okanagan)
Graduate
Balaguer-Barbosa, Maraida. « Recovery of Nutrients from Anaerobically Digested Enhanced Biological Phosphorus Removal (EBPR) Sludge through Struvite Precipitation ». Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7471.
Texte intégralMadikizela, Phindile. « The applicability of anaerobically digested pasteurized pit latrine faecal sludge as a fertilizer to grow Radish and Garden cress ». Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/59235.
Texte intégralOliveira, Ivo Miguel Delgado Bandeira. « Evaluation of sewage digested sludge conditioning and dewatering through qualitative and quantitative laboratory methodologies towards process monitoring ». Thesis, University of South Wales, 2017. https://pure.southwales.ac.uk/en/studentthesis/evaluation-of-sewage-digested-sludge-conditioning-and-dewatering-through-qualitative-and-quantitative-laboratory-methodologies-towards-process-monitoring(5a847c8f-77dc-47c8-86cf-20a64900fb42).html.
Texte intégralEk, Anders. « Ultrasonic treatment of sewage sludge in order to increase biogas yields ». Thesis, Linköping University, Department of Water and Environmental Studies, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4581.
Texte intégralBiogas, a mixture of methane and carbon dioxide, is produced in the anaerobic digestion of sewage sludge. After anaerobic digestion, the digested sludge is often allowed to degas for one or two days. This gas is seldom utilised, but if the degassing could be accelerated, utilisation would be easier. Ultrasound can be used as a pretreatment method for waste activated sludge. It has a disintegrating effect on the sludge and causes lysis of bacteria in the sludge. It also speeds up the hydrolysis; the limiting step of anaerobic digestion of waste activated sludge. Ultrasound can be used to degas waterbased liquids. Ultrasonic degassing of sewage sludge has not been examined previously. The present study aims to investigate the effect of ultrasound on waste activated sludge as well as the potential of ultrasound to speed up the degassing of digested sludge. A semi-continuous, lab-scale digestion experiment was performed with four reactors: two receiving untreated sludge and two receiving treated sludge. The effect of the sonicator was 420 W and the treatment time was 6 min, which corresponds to an energy input of 8.4 kWh/m3. Total solids (TS) of the waste activated sludge was ~3.5 %. The ultrasonic treatment caused an increase in gas production of 13 %. There was no difference in methane content. The concentration of filterable chemical oxygen demand (fCOD) increased 375 %, or from 2.8 % to 11 % of total COD. In terms of energy loss/gain the increase in gas production resulted in a loss of 2.7 kWh/m3, i.e. more energy is needed to treat the sludge than the potential energy of the increased gas production. However, if the sludge is thickened to a TS >5 %, a net energy gain should be reached. The effect of ultrasound on the degassing of digested sludge was examined in three barrels. The degassing was measured with and without circulation as well as with ultrasonic treatment. The digested sludge had a gas emission rate of 115 L/(m3 day). No direct burst of gas occurred due to ultrasonic treatment. Over two days more gas was emitted from the barrel equipped with ultrasound, probably due to an induced post-digestion. Thus, ultrasonic pretreatment of waste activated sludge increases the biogas yield. It is inconclusive, whether ultrasonic treatment of digested sludge effects the degassing or not.
Olsson, Jesper. « Enhanced biogas production from municipal WWTPs : Co-digestion of microalgae with sewage sludge and thermophilic secondary digestion of mesophilic digested sludge ». Licentiate thesis, Mälardalens högskola, Framtidens energi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-27911.
Texte intégralWennman, Pär. « Decomposition and nitrogen transformations in digested sewage sludge applied to mine tailings-effects of temperature, soil moisture, pH and plants / ». Uppsala : Dept. of Soil Sciences, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/9157666288.pdf.
Texte intégralŠirůček, Vojtěch. « Experimentální sušárna čistírenských kalů ». Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-231024.
Texte intégralLamprecht, Corne. « UASB granulation enhancement by microbial inoculum selection and process induction ». Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1477.
Texte intégralIn the absence of anaerobic granules, anaerobically digested sewage sludge is frequently used to seed industrial upflow anaerobic sludge blanket (UASB) reactors. Because of its flocculent nature, start-up with digested sludge instead of granular sludge proceeds much slower and presents various operational problems. Any manner in which the granulation of digested sludge can be enhanced would benefit UASB reactor start-up and application in developing countries such as South Africa. The main objective of this dissertation was to improve granulation and reduce UASB reactor start-up by using pre-treated digested sludge as seed. The sludge was pre-treated based on the batch granulation-enhancement model of Britz et al. (2002). The main aim of the model was to improve extracellular polymer (ECP) production of lactate-utilising populations by applying short-term controlled organic overloading in a mechanically agitated environment. The batch granulation-enhancement (pre-treatment) process was applied to an ECP-producing digester strain, Propionibacterium jensenii S1. Non-methanogenic aggregates were formed when batch units were incubated on a roller-table instead of a linear-shake platform. Larger, more stable aggregates were obtained in the presence of apricot effluent medium. Preliminary batch granulation-enhancement studies confirmed that using the roller-table as mixing system had a positive influence on batch granulation-enhancement. The roller-table showed the most potential for handling larger volumes in comparison to a linear-shake waterbath and linear-shake platform. The addition of 450 mg.L-1 Fe2+ at the start of the study also influenced aggregate numbers positively. These studies revealed that pre-treatment results varied depending on the seed sludge source. A denaturing gradient gel electrophoresis (DGGE) method was applied for the detection of Archaea in digested sludges and UASB granules. In addition, a methanogenic marker containing methanogens important to the granulation process was constructed to aid identification. The positive influence of DMSO and “touchdown” PCR on the elimination of artifactual double bands in DGGE fingerprints were also demonstrated. Results revealed that only one of the four digested sludges tested contained Methanosaeta concilii (critical to granular nuclei formation) while it was present in all the UASB granules regardless of substrate type. Four digested sludges were obtained from stable secondary digesters. DGGE indicated the presence of M. concilii in all sludges. The Athlone 4Sb-sludge was the only sludge which exhibited measurable methanogenic activity during substrate dependent activity testing. The ST-sludge showed the highest increase in volatile suspended solids (VSS) particles ≥0.25 mm2. Laboratory-scale UASB reactor start-up was done with both sludges and start-up proceeded better in the Athlone 4Sb-reactor. Athlone 4Sb-sludge batches were pre-treated in a rolling-batch reactor in the presence of either lactate or sucrose and used to seed lab-scale UASB reactors B (sucrose seed) and C (lactate seed). Start-up efficiencies were compared to a control (Reactor A). Overall Reactor B was more efficient that the control. At the end of the study the Reactor B sludge had a higher methanogenic activity than the control reactor. It also had the highest increase in VSS ≥1.0 mm2. Pre-treatment of digested sludge in the presence of sucrose, therefore, aided granulation and reduced UASB reactor start-up time.
Švehlová, Tereza. « Termické zpracování kalů z ČOV ». Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231179.
Texte intégralSantos, Jacinta Maria Azevedo dos. « Phosphate and Iron Recovery from a Vivianite-Rich Concentrate Produced from Digested Sewage Sludge ». Master's thesis, 2019. https://hdl.handle.net/10216/123386.
Texte intégralVan, Ham Mike, M. McDonald, Ken Lee et Craig Cameron 1956 Peddie. « The use of digested sewage sludge as an aid to reclaim and revegetate surface/strip mines and mine spoils ». 1991. http://hdl.handle.net/2429/12523.
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