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Showing 1 to 14 of 14 for “"Settling properties"”.
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Exocellular Polymeric Substances, Bioflocculation and Sludge Settling Properties in a Combined Anaerobic/Activated Sludge Process
… system HRT< 100 minutes resulted in poor floc settling properties and turbid supernatants. Exocellular polymeric substances (EPS) have been found to be the key factor for bioflocculation to occur. Past studies in fully aerobic pilot plant demonstrated that the concentration of EPS increased …
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The effects of dissolved oxygen concentration on the kinetics and settleability of activated sludge
… coefficients, yield coefficients, and sludge settling properties were evaluated at dissolved oxygen concentrations of 2, 4, 8, and 10 mg/l. The kinetic coefficients were different at each dissolved oxygen concentration investigated but the differences could not be correlated with dissolved …
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Design and control of equalization tanks.
… aeration control (due to load rate fluctuations) settling tank overloading due to flow rate fluctuations) and/or over- or under-aeration which affects settling properties, and others.
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Chemical and physical properties of acid mine drainage floc
… molar ratio, and solids concentration on floc settling properties were determined in synthetic acid mine drainage. Sulfate was the important factor affecting floc physicochemical properties, increasing settling times from 25-125% and decreasing settling rates from 24-63%. Neutralization pH, …
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Bioflocculation: Implications for Activated Sludge Properties and Wastewater Treatment
… that bioflocculation is important in determining settling, dewatering, effluent and digested sludge properties (activated sludge properties) and may be vital to the function of all processes related to the above properties. In these studies, it was shown that divalent cations such as calcium and …
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The Effectiveness of Multiple Redox Treatment Strategies on the Treatability of a High Strength Industrial Wastewater
… on: effluent quality, sludge characteristics and settling properties. The results suggested that anoxic/aerobic treatment schemes are a viable treatment alternative for industrial wastewaters containing high concentrations of organic acids, including acids with tertiary carbons. The treatability …
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Evaluation of gasoline-denatured ethanol as a carbon source for wastewater denitrification
… did not affect biomass production or the settling properties of the sludge. The yield (COD/NOx-N) and denitrification rates of dEtOH were similar to those of EtOH and higher than those of MeOH. The cost of dEtOH ($0.91//lb NO??-N removed) is slightly higher than that of methanol ($0.74/lb …
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Effect of Reactor Feeding Pattern on Performance of an Activated Sludge SBR
… in the feeding pattern on activated sludge properties related to bioflocculation have been analyzed in lab scale sequencing batch reactors (SBR) in order to determine if these changes in effluent water quality and settling and dewatering properties are significant, so they can be considered …
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Effects Of Environmental Factors On Anaerobic Granular Sludge In Upflow Anaerobic Sludge Blanket Reactors
… the granules and negatively affected the granule settling properties. By contrast, inorganic cations in the feed, especially calcium, tended to form inorganic precipitates in the granules and therefore promoted the granule settling rate. The extractable extracellular polymeric substance (EPS), …
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The roles and interactions of cations, proteins, and polysaccharides in the settling and dewatering of activated sludge
… of cations and exocellular biopolymer on the settling and dewatering of activated sludge was investigated. Both laboratory and full-scale activated sludge systems were examined. The results of the study showed the settling and dewatering properties of the activated sludge were dependent on the …
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Physical characteristics and aquatic settlement properties of offshore drill-cuttings.
… for specific drilling conditions, and; the settling properties of the particles was not adapted to the type of modelled particles. There was no readily available information about correlations between the cuttings size and the drilling parameters. Moreover, there was no study on the …
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Secondary Clarifier Modeling: A Multi-Process Approach
The performance of settling tanks depends on several interrelated processes and factors that include: hydrodynamics, settling, turbulence, sludge rheology, flocculation, temperature changes and heat exchange, geometry, loading, the nature of the floc, the atmospheric conditions and the total …
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Imaging The Vasculature With Susceptibility Weighted Imaging: Applications And Analysis
… the cost of some lost sensitivity. </p> <p>The settling properties of venous blood in the peripheral vasculature during periods of immobility were examined. SWI images were collected for nine subjects at two time points: within ten minutes of entering the magnet and after 40 minutes spent …
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Rapid Startup of Aerobic Granular Sludge Using Cationic Polymer For Industrial Wastewater Treatment
… and robust microbial structure, excellent settling properties, high biomass retention, and resilience to toxic substances and shock loading. Compared to flocculent sludge cultures, aerobic granules enable faster wastewater treatment within a significantly smaller footprint. Despite the …