Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Secondary Effluent"”.
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Photocatalytic degradation of palm oil mill secondary effluent (POMSE) using zinc oxide nanoparticles
Palm oil mill secondary effluent (POMSE) properties still does not achieve the discharged requirement by the department of environment (DOE). Hence, it would be a solution to the POMSE treatment to recover and reuse the photocatalyst as to meet the development of greener and advanced technologies. …
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Using Free Water Surface Constructed Wetland for the Mitigation of High PH Secondary Effluent From Municipal Wastewater Treatment Plant
… in sustained high pH levels in the system and effluent. Amherstview Water Pollution Control Plant (WPCP) in Amherstview, Ontario frequently experiences high pH effluent during the summer and is assessing the potential of a constructed wetland (CW) system to mitigate these operational issues. In …
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The toxicity of ozonated secondary-treated municipal waste effluent to blue-gill sunfish
The toxicity of an ozonated, secondary-treated municipal waste effluent to bluegill sunfish was investigated in a continuous-flow bioassay system. Four bioassay experiments were conducted, one with untreated secondary effluent and three with ozonated, secondary effluent. Ozone was applied at …
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Investigating upflow biofiltration using the Biostyr process by varying the organic strength of the influent
… concentrations of biodegradable COD loadings. Effluent suspended solids and observed yield coefficients were also analyzed along with ways to determine kinetic parameters. Combinations of primary and secondary effluent were used as the influent using domestic wastewater from a primary sewer of …
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Disinfection of wastewater for reuse using microchannel plasma ozone generator
… was approximately 2000× more cytotoxic than the secondary effluent. Ozonation consistently reduced the mammalian cell cytotoxicity of the wastewaters by as much as 10×. Chlorination lowered the cytotoxicity only when followed by dechlorination. Based on mammalian cell cytotoxicity, secondary …
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Nanofiltration Rejection of Contaminants of Emerging Concern from Municipal Water Resource Recovery Facility Secondary Effluents for Potable Reuse Applications
… water resource recovery facility (WRRF) effluent becomes vital to augment diminishing fresh drinking water resources, concern exists that conventional barriers may prove deficient and the upcycling of contaminants of emerging concern (CECs) could prove harmful to human health and aquatic …
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The effect of selected organics on breakpoint chlorination
A synthetic secondary effluent, comprised of an animal feed and distilled water, was chlorinated under the influence of three selected organics: dextrose, phenol, and phenylalanine. The initial ammonia nitrogen and organic compound concentrations were varied. The breakpoint curves and total …
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Applications of Membrane Aerated Biofilm Reactors for Wastewater Treatment
… <br/><br/>Using the MABfR for the treatment of secondary effluent as a polishing step is another niche application which has been identified and is examined in this work; leading to the development of a patented treatment technology – the BioSettler.
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Microbial and Chemical Affects on Leachate from Calcareous Soils Treated with Wastewater Effluent
… prompting the use of treated wastewater effluent for irrigation in some areas, including the desert regions of the Western United States. To determine the potential effects of using secondary effluent for irrigation, we applied wastewater effluent and irrigation waters to natural and …
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Effect of varying operational parameters on the drainability of freeze conditioned chemical sludges
… was comparable to the quality of wastewater secondary effluent and some surface waters.
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An Investigation of the Feasibility of Nitrification and Denitrification of a Complex Industrial Wastewater with High Seasonal Temperatures
… is very unique both because it is comprised of effluents of seven different industries in the area in addition to the domestic wastewater in the area, and because it reaches high temperatures in the basins, often above 45oC during the summer. Four different bench scale systems consisting of …
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Application of Ozone in Dissolved Air Flotation (DAF) for Enhanced Removal of TOC and Suspended Solids in Pulp and Paper Wastewaters
… heavily contaminated wastewater. This discharged effluent can have a harmful effect on the receiving aquatic environment and cause further ramifications downstream. Thus, a technically feasible and cost effective treatment solution for safe release from the mill is essential. Dissolved air …
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Microbial fuel cells coupled with open pond for wastewater treatment: is it viable?
… and energy recovery. When treating an artificial secondary effluent for nitrate removal, the SMFC could remove 44% of the nitrate, higher than that without electricity generation. The enhanced removal was attributed to the supply of electrons to nitrate reduction in the aqueous phase through …
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An investigation of split treatment for wastewater management under peak flow conditions
… of wastewater treatment facilities to meet effluent standards during peak flow conditions has been neglected in the past. Facilities are frequently designed to accommodate diurnal flow variations on the basis of elimination of significant amounts of infiltration and inflow which would …
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Ecological studies on high-rate biological filters with special reference to microbial biosynthesis and nitrification
… plastic primary filter media and two plastic secondary filter media were studied. The hydraulic loading applied to the primary plastic media (11.2 m3 /m3 .d) was twice that applied to the mineral media. The plastic media removed an average around 66 percent and the mineral media around 73 …
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Evaluation of an enhanced magneto-chemical process for the removal of pathogens in wastewater
… rotavirus strain Wa, and adenovirus type 2 from secondary effluent wastewater, at 24°C and 4°C. Additionally, the removal of MS2 was assessed using a 100 gpm CoMag(TM) pilot plant. The results indicate that there was a statistically significant difference (when alpha=0.050) in the removal …
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Exocellular Polymeric Substances, Bioflocculation and Sludge Settling Properties in a Combined Anaerobic/Activated Sludge Process
… in which bioflocculation occurs satisfactorily (effluent SS concentrations < 20 mg/L) is 15 min; however, in the combined anaerobic/aerobic system HRT< 100 minutes resulted in poor floc settling properties and turbid supernatants. Exocellular polymeric substances (EPS) have been found to be the …
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Community structure and function of mixed microalgal communities for nutrient recovery and the selection of lipid and carbohydrate accumulators for enhanced feedstock production in wastewater treatment
… low-input nitrogen and phosphorus recovery with effluent nutrient concentrations below the current limit-of-technology while simultaneously producing carbon-rich biomass. Despite this potential, current systems are operated empirically and suffer from unpredictable community dynamics that hinder …
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Transverse vibration as a fouling limitation strategy in membrane bioreactors
… (yeast, bentonite, alginate) and complex feed (secondary effluent) from an AnMBR. During the fundamental study of filtration with model solutions, it was found that transverse vibration has great potential in limiting cake formation. However, the impact of it on internal pore fouling was found …
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Quantitative analysis of anaerobic and phototrophic treatment technologies to advance resource recovery from wastewaters
… and, although it provides a high-quality effluent, it is also energy intensive. High energy demand is costly both economically and environmentally. These problems underlie a need to re-envision municipal wastewaters as a renewable resource for nutrients and energy while continuing to hold …
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