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Discussion: Improved Characterization of Mixing for Sludge Conditioning
Publisher: American Society of Civil Engineers
Discussion of “<i>Specific Resistance Measurements: Nonparabolic Data</i>” by G. Lee Christensen and Richard I. Dick (June, 1985, Vol. 111, No. 3)
Publisher: American Society of Civil Engineers
Characterization of Exocellular Protein and Its Role in Bioflocculation
Publisher: American Society of Civil Engineers
Abstract: The relationship between exocellular biopolymer concentration and cation concentration was examined using laboratory scale activated sludge reactors with bactopeptone as a feed. An increase in the divalent cation concentration ...
Fluidized Bed for Removing Iron and Acidity from Acid Mine Drainage
Publisher: American Society of Civil Engineers
Abstract: A fluidized bed reactor (FBR) for the removal of iron from acid mine drainage (AMD) was evaluated as part of a prototype multistage system, which included a bioreactor to oxidize ferrous iron, an FBR for the precipitation ...
Modeling Biooxidation of Iron in Packed-Bed Reactor
Publisher: American Society of Civil Engineers
Abstract: A model based on Monod kinetics and originally developed for use with rotating biological contactors was modified for use with a packed-bed column reactor. The reactor was filled with expanded polystyrene beads to immobilize ...
Carbon Addition Reduced Lag Time for 2,4,6-Trichlorophenol Degradation
Publisher: American Society of Civil Engineers
Abstract: The effect of grass root exudates and glucose on the lag time associated with 2,4,6-trichlorophenol (TCP) degradation by an unacclimated microbial inoculant and an acclimated microbial inoculant was investigated. The ...
Aerobic Biodegradation of Methyl Tert-Butyl Ether in Gasoline-Contaminated Aquifer Sediments
Publisher: American Society of Civil Engineers
Abstract: Intrinsic biodegradation of methyl tert-butyl ether (MTBE) in aquifer sediments under oxic conditions was investigated using laboratory microcosms. Aquifer samples were collected from three different areas (source area, ...
Soil Washing and Biotreatment of Petroleum‐Contaminated Soils
Publisher: American Society of Civil Engineers
Abstract: Soil washing was evaluated in combination with biological treatment as a decontamination technology for petroleum‐contaminated soils. The bench‐scale soil washing system utilized to clean the soils also fractionated the ...
Hydrophobicity Distribution of Landfill Leachates and Evaluation of Organic Constituents That Affect Publicly Owned Treatment Works
Publisher: American Society of Civil Engineers
Abstract: Landfill leachates are often discharged through sewers or by trucks to publicly owned treatment works (POTWs) after on-site biological treatment. This discharge of landfill leachate is widely accepted because of its ...
Biological Wastewater Treatment and Estrogenic Endocrine Disrupting Compounds: Importance of Colloid Organic Carbon
Publisher: American Society of Civil Engineers
Abstract: Understanding the behavior of estrogenic endocrine disrupting compounds (EEDCs) during biological wastewater treatment is a critical aspect of protecting aquatic ecosystems and drinking water supplies. Binding coefficients