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 10 of 10 for “"volatile solids destruction"”.
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The Effect of Cations on Volatile Solids Destruction, Odors, and Dewatering in anaerobic digestion
… the effects of wastewater sludge feed cations on volatile solids destruction, odor control, and dewaterability. The role of influent feed cations and addition of chemical coagulants to sludge were evaluated for those characteristics following anaerobic digestion. Wastewater sludge samples were …
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High-Intensity Shear as a Wet Sludge Disintegration Technology and a Mechanism for Floc Structure Analysis
… does not appear to enhance solublization of solids, though deflocculation and deterioration of dewaterablility was observed. Anaerobic digestibility appears to be enhanced by the addition of a high shear as shown by increases in gas production and volatile solids destruction. The dewatering …
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Cations and activated sludge floc structure
… protein, ammonium production, percentile volatile solids reduction and iron in floc were obtained. These data indicate that iron-linked protein is released to solution when iron is reduced and its degradation is responsible for volatile solids reduction in anaerobic digestion. In aerobic …
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The Effect of Pretreatment Methods on Methane Yield and Nutrient Solubilization During Anaerobic Digestion of Microalgae
… which was assessed in terms of methane yield, volatile solids destruction, and solubilization of N, P, and K. The microalgae were harvested by sedimentation from outdoor wastewater-fed raceways ponds operated in coastal southern California. Four pretreatment methods (sonication, high-pressure …
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Shear Forces, Floc Structure and their Impact on Anaerobic Digestion and Biosolids Stability
… to address the controlling factors of biosolids stability as they relate to mesophilic anaerobic digestion, dewatering processes and digestion enhancement by wet sludge disintegration technologies. The working hypothesis of this study is that digestion performance; nuisance odor generation …
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Anaerobic Co-digestion of Microalgae with Food Waste and Wastewater Sludge
… fed pure algae biomass loaded at a rate of 4 g Volatile Solids (VS)/L-day with a 20-day residence time exhibited stable digestion and yielded an average of 0.23 L CH<sub>4</sub>/g VS <sub>Introduced</sub>. For digesters that contained algae biomass in the feed, the greatest methane yield of 0.40 …
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Enhancing hydraulic performance of a multi-stage anaerobic digester for high solids cattle manure
… economic challenges when being applied to high solids substrate such as dry-lot cattle manure. In Colorado and the rest of the arid west, feedlot practices and dry climate combine to form a waste product that is very high in total solids (TS) content, from 50% up to 90% TS. Since the most common …
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Implementation of Acid/Gas Digestion Approach to Maximize Volatile Fatty Acids Production from Municipal Sludge and a Techno-economic Feasibility Study
… conditions that would maximize the production of volatile fatty acids (VFAs). Batch and semi-continuous acid digesters were operated using combined primary sludge and waste-activated sludge as the feedstock from New York City (NYC)’s Wards Island water resource recovery facility (WRRF). Operating …
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Optimisation of anaerobic digestion of organic solid waste for the production of quality compost for soil amendment
… ratio 2 :2:1 as optimal for biogas production, volatile solids destruction and pH stability. The study also showed that the choice of waste mixture can be useful for pH control during anaerobic digestion of OFMSW. The second stage, investigated the factors affecting aerobic post-treatment of the …
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Performance and Mechanisms of Excess Sludge Reduction in the Cannibal™ Process
… recycle stream were operated. In this study, the solids production in the Cannibal system was about 35-40% of the conventional system under steady state conditions. The reduction in waste sludge was optimized when the interchange rate, (the ratio of sludge fed from the activated sludge system to …