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 27 for “"Synthetic wastewater"”.
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Treatment of synthetic wastewater containing textile dyes with experimental constructed wetlands
… of pollutants. Amongst these pollutants is dye wastewater, which frequently has mutagenic and carcinogenic effects on humans and animals, depending on the receiving watercourses as a source for drinking water. In contrast to traditional high-rate wastewater treatment units, passive biological …
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Study of recycled concrete aggregate as filter media for phosphorus removal in synthetic wastewater
… in surface water. However, existing conventional wastewater treatment systems for removing phosphorus are expensive and complex. Recycled concrete aggregate (RCA) may be an alternative solution for phosphorus removal. It can reduce pollution and landfill disposal by converting construction waste …
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The Effectiveness of Multiple Redox Treatment Strategies on the Treatability of a High Strength Industrial Wastewater
The treatability of a high strength industrial wastewater, 9,000 mg/L as chemical oxygen demand (COD), by three sequencing batch reactor (SBRs) systems operated under alternating redox environments: anaerobic/aerobic (ANA), anoxic/aerobic (ANX), and aerobic was investigated. A synthetic wastewater …
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Soil and Wastewater Properties that Influence the Uptake of Anti(retro)viral Pharmaceuticals in Plants
… (ARVDs) pharmaceutical compounds in the wastewater-soil-plant-human continuum. Wastewater frequently contains pharmaceutical micropollutants. A cause to worry is the potential uptake and bioaccumulation of these biologically active contaminants via the plant's roots into the edible …
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An innovative reactor design for the treatment of biologically inhibitory wastewater
… to continuously treat biologically inhibitory wastewaters. An innovative reactor design that decouples biological and physical removal mechanisms by combining a GAC adsorber with a biological reactor was developed and studied. The innovative reactor design was compared with a single stage GAC …
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The Removal of Pharmaceuticals from Wastewater by Wet-Air Oxidation
… (GEM, an acidic lipid regulator). Treatment of synthetic wastewater that contained these drugs was accomplished using wet-air oxidation (WAO). Pre- and post-treatment drug concentrations were determined by reversed-phase liquid chromatography. The influences of different operational conditions …
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Influence of nutrients on the biological phosphorus removal process at high acetate concentrations
… and Chapin (1994), who found that industrial wastewater with high concentrations of acetate were able to inhibit the biological phosphorus removal process. Two bench-scale pilot plants were operated under controlled conditions that included synthetic wastewater as feed. The acetic acid …
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Surface Modification of PVDF Membranes for Treating Produced Waters by Direct Contact Membrane Distillation
… These membranes were also challenged with a synthetic wastewater made by adding to DI water the major inorganic compounds present in the produced water. The highest fluxes were obtained for the membrane grafted with 1-vinyl-3-allylimidazolium bromide chains. The membrane surface after …
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Exploring Bioelectrochemical Systems for Removal and Recovery of Hexavalent Chromium or Nutrients
… nutrients simultaneously from nutrient-rich wastewater, such as digested manure from livestock. A four-chamber BES was developed and used in this study to explore the potential to remove and recover hexavalent Chromium from synthetic wastewater, and ammonia and phosphate from digested manure. …
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Barium carbonate treatment of sulfuric acid wastewater
… methods of removing sulfates from sulfuric acid wastewater through the addition of barium carbonate and the formation of a barium sulfate precipitant were investigated. Optimization of barium carbonate dosage, reaction time and mixing conditions was accomplished for each method prior to …
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Water Quality Spatial Heterogeneity in Wastewater Stabilization Ponds at Elevated pH
… to elevated pH in secondary facultative wastewater stabilization ponds (WSPs). Loyalist Township, Ontario, operates a water pollution control plant that employs three facultative WSPs that have experienced elevated pH levels in the summer months due to excessive algae growth. In efforts …
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Algal Wastewater Treatment and Biofuel Production: An assessment of measurement methods, and impact of nutrient availability and species composition
… consumption of fossil fuels. Using algae for wastewater treatment and biofuel production offers one approach to progress towards these goals simultaneously. Algae are capable of removing nutrients from wastewater and carbon dioxide from the air, and the biomass formed in that process can be …
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Biological nutrients eradication employing Aerobic Granulation
… of natural water bodies and stressing the wastewater treatment facilities. The increased availability of nitrogen and phosphorus are known to cause the excessive aging of lakes, eutrophication, thus depriving these bodies of oxygen, leading to various ecological, human health and …
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A novel bioadsorption-flocculation fluidized bed bioreactor prior to membrane filtration for wastewater treatment and reuse
… capital costs has attracted more attention for wastewater treatment and reuse. The natural based flocculants (NBFs) are environmentally friendly and biodegradable, as well as present good flocculating ability. They can minimize environmental and health risks. Membrane technology has been …
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The Effects Of Ph On Enhanced Biological Phosphorus Removal (ebpr) With Propionic Acid As The Dominant Volatile Fatty Acid (vfa)
… take acetate faster than GAOs would). They used synthetic wastewater rich in acetic acid. In this study, we used real wastewater and the dominant volatile fatty acid available to microorganisms was propionic acid in continuous EBPR system. It was found that lower anaerobic zone pH (6.5 vs. 7.2) …
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The feasibility and microbial community dynamics of using down flow hanging sponges (DHS) reactor in treating high strength soft drink wastewater
… to treat high organic strength soft drink wastewater was investigated by operation over 700 days. At the same time, the microbial compositions were characterized and related to reactor performance. Synthetic wastewater at a concentration of 3000 mg/L chemical oxygen demand (COD) was …
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Pharmaceuticals removal in soil following wastewater land application
… are used worldwide and enter the environment via wastewater treatment system effluent discharges. With increasing concern in water reuse, attention is turning to the wastewater resulting in detection of these compounds in several environmental media associated with wastewater stream. One of the …
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The sorption fate of active pharmaceutical ingredients in soils receiving high wastewater inputs and implications for risk assessments
… ingredients (APIs) entering sewerage networks. Wastewater in lower and lower middle-income countries use that use wastewater for irrigation may use untreated or poorly treated wastewater resulting in the potential for greater concentrations of APIs to enter soils in this way. Wastewater re-used …
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The purification of industrial wastewater to remove heavy metals and investigation into the use of zeolite as a remediation tool
… of adsorbents, both modified natural zeolite and synthetic zeolite (derived from kaolinite) were used for the purification of wastewater. The characteristic properties and applications of adsorbents are also discussed including the advantages and disadvantages of each technique. The present work …
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Bacterial Responses to Silver Nanoparticle Treatment: Community Structure, Resistance, and Function.
… both natural and engineered environments is wastewater treatment plants. As a society we rely on the biological removal of nutrients, which takes place primarily in the activated sludge of secondary treatment. Studies have already indicated possible, temporary decreases in removal …
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