Activated sludge process
Treatment of Textile Wastewater by a Coupling of Activated Sludge Process with Membrane Separation
... tank and a microfiltration membrane as separation apparatus The aeration tank was made from Plexiglas with a working volume of liters Air was supplied to the aeration tank through diffusers at a ... quality, and kinetic parameters were also investigated PERMEATE COMPRESSED AIR INFLUENT AIR SLUDGE WASTE Fig Schematic Diagram of the Coupling of Activated Sludge Process and Membrane Separation ... Reactor Operation The sludge from activated sludge process was acclimatized by the textile wastewater in an aerobic batch tank without the membrane filtration unit Necessary amount of nitrogen and phosphorous...
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Impact of pH on Anaerobic Substrate Uptake by PAOs and GAOs in an EBPR Activated Sludge Process Analyzed by MAR-FISH
... uptake by Candidatus ‘Accumulibacter phosphatis’ and Candidatus ‘Competibacter phosphatis’ Within the tested pH range (initial pH from to and final pH from to 8), pH had similar impact on anaerobic ... Right: R eutropha ) Effect of pH on acetate uptake by PAOs and GAOs The profiles of pH, acetate uptake, and phosphate release observed in the cold experiments are shown in Figs 2, and In all cases, ... uptake of radio-labeled acetate by Candidatus ‘Accumulibacter phosphatis’ and Candidatus ‘Competibacter phosphatis’ was examined by MAR-FISH, and the results are shown in Figs and Lower initial pH...
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Activated sludge process
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seafood processing wastewater treatment by using an activated sludge reactor followed by a cyperusmalaccensis lam. constructed wetland
... VIETNAM NATIONAL UNIVERSITY, HANOI VNU UNIVERSITY OF SCIENCE NAKHONEKHAM XAYBOUANGEUN SEAFOOD PROCESSING WASTEWATER TREATMENT BY USING ACTIVATED SLUDGE REACTOR FOLLOWED BY CYPERUSMALACENSIS LAM CONSTRUCTED ... (Sirianuntapiboon and Nimnu, 1999) To avoid this impact, treatment of seafood processing wastewater before discharge has been proposed A candidate method of treatment is constructed wetland Wetlands have ... et al., 1996; Higgins et al., 1993; Karathanasis and Thompson, 1995; Bernard and Lauve, 1995) Natural treatment systems have been shown to have a significant capacity for both wastewater treatment...
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Characteristics of hydrogen production from food waste and waste activated sludge
... for 3.0 and 5.0 % of total VS concentrations could not be conducted because of low VS concentration of sewage sludge 20 mL of seed sludge and appropriate amounts of food waste and sewage sludge ... produce moles of hydrogen with mole of n-butyrate or moles of hydrogen with mole of acetate from mole of hexose In most cases using soluble defined substrates, hydrogen production yield and major ... typical Korean food waste and sewage sludge Food waste, sampled from a dining hall, was crushed by an electrical blender under anaerobic condition Sewage sludge was sampled from a local wastewater...
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A Study on the Optimum Backwashing Method applied to Activated Carbon Process in Waterworks
... 2003 The characteristics of a granular activated carbon In a granular activated carbon contact basin, virgin carbon is domestic activated carbon made from palm shell, reactivated carbon means activated ... conditions and methods The study selected basins(2 reactivated, spent carbon basins, and virgin carbon basin) of granular activated carbon from 24 ones in the M water purification plant in Daegu; ... carbon 24 granular activated carbon contact basins consist of buildings each of which has stationary downward filter basins The rate of activated carbon and sand is 250:20(㎝); the under drainage...
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Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge
... with incubation time In other word, the adsorption capacity of PAC increased with increase in the amount of organic carbon on PAC The adsorption capacity of PAC after 4th incubation was almost the ... of organic carbon on PAC after each incubation Figure Figure shows the adsorption isotherm of new PAC, PAC in the aeration tank, and PAC after 1st and 4th incubation The adsorption capacity of ... decrease the adsorption capacity of PAC for 3,5-DCP To clarify the effect of biofilm on the adsorption capacity of PAC, PAC covered with biofilm was made and its adsorption capacity was compared to the...
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Comparison of Methods for the Extraction of Bioflocculants from Activated Sludge
... an effort to develop an effective extraction method for bioflocculants from the microbial cell surface Materials and Methods Activated sludge samples Activated sludge samples were collected from ... was the most effective extraction method for activated sludge However, cell disruption is not effective for the isolation of bioflocculants Thus, NaOH extraction was the most effective method for ... polymer extraction methods (steaming extraction, NaOH extraction, SDS extraction, and washing extraction) were compared to develop an effective extraction method for bioflocculants from activated sludge...
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Isolation and characterization of an extracellular polymer closely related to flocculation of activated sludge
... natural activated sludge An extracellular polymer was extracted from an activated sludge suspension and was characterized because an extracellular polymer closely related to flocculation of activated ... drawn from the results of the study An extracellular polymer closely related to flocculation of activated sludge was obtained from the sludge suspension by sonication The polymer exhibited flocculating ... Blumenkrantz, N and Asboe-Hansen, G (1973) New method for quantitative determination of uronic acids Anal Biochem., Vol.54, 484-489 Dermlim, W., Prasertsan, P and Doelle, H (1999) Screening and characterization...
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Development of the Quantitative PCR Method for Candidatus ‘Accumulibacter phosphatis’ and Its Application to Activated Sludge
... archaebacteria Candidatus ‘Accumulibacter phosphatis’ Candidatus ‘Accumulibacter phosphatis’ Candidatus ‘Accumulibacter phosphatis’ Candidatus ‘Accumulibacter phosphatis’ Candidatus ‘Accumulibacter phosphatis’ ... Quantitative PCR and FISH method in Activated sludge The amount of Candidatus ‘Accumulibacter phosphatis’ in the laboratory-scale and the full-scale activated sludge were quantified both by the quantitative ... abundance in activated sludge Nevertheless, quantitative PCR method for Candidatus ‘Accumulibacter phosphatis’ has not been developed yet In this study, quantitative PCR method for Candidatus ‘Accumulibacter...
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Occurrence of Polyhydroxyalkanoate as Temporal Carbon Storage Material in Activated Sludge during The Removal of Organic Pollutants
... carbon storage is one of the important processes for the DOC removal in activated sludge CONCLUSIONS The occurrence of temporal carbon storage material, PHA, was confirmed in the course of wastewater ... calculated as the amount of PHA increased during the anaerobic phase divided by the amount of carbon supplied as influent in one cycle For continuous reactors, CRP value was calculated as follows The ... water was added to it, the tube was shaken, and, the methyl ester of PHA monomers in the chloroform layer was collected The chloroform phase was washed again with 0.5mL water, and then injected...
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Influence of Polyferric Sulfate Coagulant on the amoA mRNA Expression of Ammonia Oxidizer in Activated Sludge
... important for further investigation Number of ammonia oxidizers and copy number of amoA mRNA The time courses of the copy number of amoA mRNA and the number of ammonia oxidizer are shown in Fig No significant ... PCR-reaction-1) Community analysis of ammonia oxidizer based on amoA mRNA The difference of the effect of polyferric sulfate on each species of ammonia oxidizer was demonstrated by T-RFLP analysis of ... result of T-RFLP analysis, there is great impact of polyferric sulfate on amoA mRNA expression for some species of ammonia oxidizers Therefore, in the activated sludge process of nitrification-denitrification...
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Effect of sludge processing mode, soil texture and soil ph on metal mobility in undisturbed soil columns
... soil columns to determine the eects of sludgeprocessing mode, initial soil pH and soil texture on the short- and long-term mobility of metals and nutrients The sludge products (detailed in Richards ... adjustment in soil pH) and at the end of each cropping cycle Dewatered sludge columns saw pH levels decline somewhat during agronomic Fig Hudson and Arkport soil column percolate pH and soil pH, grouped ... tons/ha sludge loading Sludge- processing mode, soil type, soil texture and time since application had substantial eects on percolate metal mobilities following heavy sludge loadings Metals and nutrients...
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Flocculation dynamics of synthetic and activated sludge in wastewater treatment pptx
... settling in a clarifier is one of the most critical operations in the activated sludge process Bioflocculation of activated sludge determines how the sludge will dewater, flow, and settle, all of ... aluminium ions also seem to assist in floc binding and the flocculation of other organic material The cation contribute significantly to the binding of the sludge flocs in both synthetic and activated ... Hankins, N Hilal, A comparative study of the flocculation behaviour and final properties of synthetic and activated sludge in wastewater treatment, Desalination 277-295, 204(2007) [11] M.J Higgins,...
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