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An anaerobic membrane bioreactor (AnMBR) was employed for the treatment of low-strength municipal wastewater in this study. The membrane filtration performance and pollutant removal efficiency were investigated. A series of measurements, i.e., three dimensional excitation-emission matrix (EEM) analysis, gel filtration chromatography (GFC), Fourier transform infrared (FTIR) analysis, characterization...
Wood is light, has high strength and beautiful appearance, and needs a small amount of power to process it. Of four major materials (steel, cement, wood and plastics) in the world, wood is the only green material and biological resource that is renewable, recyclable, and can be naturally degraded. With natural high-quality forest resources increasingly reducing, they are gradually replaced by a large...
The Catalytic Wet Oxidation (CWO) method was investigated to treat wastewater from chemical container cleaning process, which contains various and high-strength pollutants. A heterogeneous catalyst was studied with Cu2+ as the active component and activated carbon as the supporter. The effects of Cu2+ concentration, calcination temperature and calcination time on the Cu-based catalyst performance...
Coagulation process was applied to treat wastewater generated from the cleaning process of production and printing equipments of water-based printing ink under without pH adjustment. Polyaluminum chloride (PACl), aluminum sulfate (Al2(SO4)3) and ferrous sulfate (FeSO4) were used as coagulants, polyscrylamide (PAM) and FeSO4 were selected as coagulant aids. Coagulation efficiency was evaluated in terms...
A full-scale SBR system was built to investigate simultaneous nitrogen and phosphorus removal from municipal wastewater. The system was operated for 290 days and achieved stable organic and nutrient treatment effects. Removal efficiency of COD, TP, NH4+-N and TN reached 90.1%, 89.3% 87.3% and 60.2% respectively. To optimize system operation, different reactor operation conditions were analyzed. The...
Based on submerged hollow fiber membrane module operation performance, backwashing pressure (BP) and backwashing flux (BF), the two key parameters of cleaning in line (CIL) operation, were analyzed in this work. The results demonstrated that the optimal CIL condition should made the backwashing solution cover the farthest hollow fiber end. Additional to that, when the module was installed higher than...
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