Abstract: Response of an aerobic upflow sludge blanket (AUSB) reactor system to the changes in operating conditions was investigated by varying two principle operating variables: the oxygenation pressure and the flow recirculation ...

Abstract: In this study, oxidation-reduction potential (ORP) was employed to regulate oxygen dosing for online sulfide toxicity control during anaerobic treatment of high sulfate wastewater. The experiment was conducted in an upflow ...

Abstract: Although the conventional gas collection and measurement system using the principle of brine water displacement is simple, it encounters a gradual pressure buildup during each cycle of gas monitoring. A novel design has ...

Abstract: The anaerobic treatment performance of phthalic acid at 4,000 mg/L (dry weight) by a hybrid reactor consisting of an upflow anaerobic sludge blanket (UASB) and a biofilter was examined. Using anaerobic sewage sludge as the ...

Abstract: Utilization of dissolved organic matter in a 1.5 km section of a sanitary gravity concrete sewer with an inner diameter of 450 mm constructed on a slope of 0.0075 was studied. Continuous measurements of dissolved organic ...

Abstract: A model has been developed to describe the gas production and soluble‐COD variations from the digestion of waste‐activated sludge in the anaerobic fluidized‐bed reactor. It indicates that a substantial rate increase can ...

Abstract: This study was undertaken to evaluate the laboratory performance of the anaerobic fluidized bed digesting secondary biological sludge at 35 °C with four hydraulic‐retention times (HRTs): 1, 2.5, 5, and 10 days. In addition, ...

Abstract: There is little information available in the literature to describe the effect of heavy metals on a fixed‐film biological waste treatment system. The primary objective of this study is to evaluate the toxic effect of Cd(II) ...

Abstract: A concentrated 10% chlorine solution (in sodium hypochlorite) with a specific gravity of 1.2 is used for the disinfection of treated primary effluent in the Stonecutters Island Sewage Treatment Works (SCISTW) in Hong Kong. ...

Abstract: In the Hong Kong Harbour Area Treatment Scheme (HATS), a concentrated 10% chlorine solution (in sodium hypochlorite with a specific gravity of 1.2) is used directly to disinfect sewage that receives a chemically enhanced ...