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Showing 1 to 8 of 8 for “"floc structure"”.
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Cations and activated sludge floc structure
… For this purpose, cations in solution and in floc were evaluated along with various activated sludge characteristics and the collected waste activated sludge underwent both anaerobic and aerobic digestion. It was found that large amounts of biopolymer (protein + polysaccharide) remained in the …
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Shear Forces, Floc Structure and their Impact on Anaerobic Digestion and Biosolids Stability
… disintegration are directly related to anaerobic floc structure and its interaction with shearing forces. Mesophilic digestion was studied in two modes of operation, convention high rate and internal recycle mode to enhanced digestion using a wet sludge disintegration device. The internal recycle …
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High-Intensity Shear as a Wet Sludge Disintegration Technology and a Mechanism for Floc Structure Analysis
… 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 properties of …
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Elucidating the Role of Toxin-Induced Microbial Stress Responses in Biological Wastewater Treatment Process Upset
… proteins did not explain the significant deflocculation upsets that were characteristic of many of the industrially-relevant chemicals tested, including pentachlorophenol and cadmium. Although the purpose of stress response mechanisms is protective at the cellular level, the effect may be …
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Polyelectrolyte conditioning of ferric sulfate sludge
… anionic polyelectrolytes produced a more porous floc structure that dewatered to a cake that was easily removed from the bed. Cost data for polyelectrolytes indicated that conditioning of the sludge by this method was very economical.
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Elucidating the Response of Activated Sludge Cultures to Toxic Chemicals at the Process, Floc and Metabolic Scales
… consortium structurally organized in bioflocs to treat pollutants present in wastewater. The treatment process efficiency in these systems can be severely affected by toxic chemicals present in the influent wastewater. The effects of chemical toxins at the treatment process level are …
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Effect of High Shear on Anaerobic Digestion in an Anaerobic Membrane Bioreactor (Anmbr) Treating High Strength Wastewater
… in shear. Reactor performance and microbial floc size distributions were not affected under increased shear conditions. Microbial floc structure analysis with fluorescence in situ hybridization indicated close proximity of archaeal and bacterial cells (within 10 mum of each other) before, …
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Hydrothermal treatment of sewage sludge under oxidative and nonoxidative conditions
… sludge depends on the location of these in the floc structure. Therefore, greater refractoriness to the oxidation was observed on those fractions located more externally to the cells. Moreover, the analysis of the molecular size distribution of the biopolymers during wet oxidation showed that …