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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 17 of 17 for “"Chemical coagulation"”.
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Virus Removal by Chemical Coagulation
Made available in DSpace on 2014-12-08T23:57:20Z (GMT). No. of bitstreams: 1 7013275.pdf: 3885482 bytes, checksum: 851571426cc61690afba6997d0ef8d5a (MD5) Previous issue date: 1969
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The removal of organic waste matter from secondary sewage effluents by chemical coagulation
… operation. Removal was evaluated in terms of Chemical Oxygen Demand (COD) of the wastewater. It was found that, among the inorganic coagulants tested, ferric chloride was, in all cases, the most effective coagulant for COD removal. In general, the final COD achieved with ferric chloride was …
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Design and analys of chemical coagulation systems to enhance the performance of waste stabilization lagoons
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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The characterization of dissolved organic material in natural waters and the phase-change behavior of organic matter during chemical coagulation
… DOM recovery, and DOM isolation. This research chemically and physically characterized DOM using synthetic resin adsorption and ultrafiltration, respectively. A 0.45 μm filter separated the NOM into particulate and nonparticulate fractions prior to characterization. The DOM of two natural waters …
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Characterization and treatment of spent vegetable tan liquors
… the effect of aeration in combination with chemical coagulation on the treatment of spent vegetable tan liquor. Chemical coagulation was desirable because it effectively reduced the color and suspended solids of the tanning waste. Aeration was thought to be a possible means of reducing the …
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Evaluation of parameters affecting the colloidal destabilization of spent vegetable tannin liquor
… objective of this investigation was to develop a chemical method for treating spent vegetable tannin liquor. Vegetable tannin wastes are plagued by a multitude of undesirable characteristics, principal of which is a color problem. Historically, chemical coagulation processes have been successful …
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Physicochemical and biological treatment of a textile dyeing and finishing wastewater
… or body of water. Pretreatment often consists of chemical coagulation to remove color and solid matter. Aerobic biological treatment is incorporated to remove degradable organic matter and additional color and solid matter. The wastewater studied in this research project consisted of thermosol …
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Physicochemical and biological treatability study of textile dye wastewater
… that uses biological treatment followed by chemical coagulation to treat their highly colored wastewater prior to discharging to the local river. Occasionally, color, organic, and metal concentrations exceed the effluent discharge limits set by the state. In this research project, many …
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Removal of Arsenic Using Iron Coated Limestone
… Different removal technologies like oxidation, chemical coagulation, precipitation, adsorption and others are available. There are problems and benefits associated with each of these approaches that can be related to cultural, socio-economic and engineering influences. The method proposed in …
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Color removal in textile dye wastewaters by means of coagulation
… the treated wastewater to surface waters. Chemical coagulation is successful in some cases at reducing wastewater color to acceptable levels. Also anaerobic biological treatment is usually successful in destroying the dyes and color in the wastewater. Aerobic biological treatment often does …
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Treatability of Dissolved Organic Nitrogen in Truckee Meadows Water Reclamation Facility Using Coagulation or Ozone Treatment
… streams at TMWRF using ozone (O3) treatment and chemical treatment with various coagulants. With regard to ozone treatment, the change in bioavailability of DON was assessed following ozone treatment to identify if biological processes downstream of ozonation could remove DON effectively. Ozone …
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Electrochemical Pretreatment for Microfiltration of Surface Water: Mechanisms of Fouling and Its Control
Aluminum electrochemical pretreatment was evaluated for fouling control during surface water microfiltration (MF) using bench-scale galvanostatic batch electrolysis experiments followed by constant pressure, dead-end MF. In all cases, electrochemical aluminum production quantitatively obeyed …
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Bioflocculation of Wastewater Treatment Pond Suspended Solids
… microalgal suspended solids are removed by chemical coagulation followed by separation methods that often have a high cost relative to the low cost lagoon or HRAP system where the solids were produced. This separation step is often cost prohibitive or operationally complex for municipalities …
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Sustainable development of an integrated solid waste and wastewater treatment.
… Sureclean waste streams: mechanical separation, chemical treatment, electro-coagulation and the advanced oxidation process. Laboratory and field trials were conducted using these different treatment techniques and the analysis was performed to verify the treatment results. The result of these …
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Physical-chemical treatment of landfill leachate : technological performance, spectral characterization and cost estimations
… treated landfill leachate using four physical-chemical processes, i.e. ozonation, coagulation-flocculation, granular activated carbon (GAC) adsorption, and ion exchange. The aim was obtaining an optimized and cost effective integrated leachate treatment train. The research also used spectral …