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An A2/O system was built up to simulate Luchun wastewater treatment plant in Wuxi. Polymer ferric sulfate (PFS) was added into the system at the end of aeration tank to enhance phosphorus removal. When the dosage of PFS was 2.99 mg Fe/L, the average total phosphorus (TP) in the effluent was 0.24 mg/L, which met the discharge standard for municipal wastewater treatment plant, class A (GB18918-2002)...
The performance and enhancement of pollutants removal in raw municipal sewage by a new pretreatment process were investigated in this study. The experiments were carried out with a GS sedimentation tank in full scale plant. The results revealed that average removal efficiency of TP, TSS, and TN achieved 49%, 67.3% and 20% respectively during stable running period. TSS removal rate could achieve about...
The influencing factors of simultaneous nitrification and denitrification (SND) was investigated in this study. The experiment was carried out with synthetic wastewater in Sequencing batch reactor (SBR). Some effect factors and mechanism of SND were studied through continuous running of SBR process. Optimum operation condition of SND was obtained in the experiment, and it was found that the removal...
The removal of Cu2+ and Cd2+ of aqueous solution by residual sludge from four type sewage treatment plant was investigated. Effect of adsorption time, kinetics and thermodynamics of adsorption was researched. The study indicated that all of the sludge can absorb mono-component Cu2+ or Cd2+ but the sludge from Petrochemical Wastewater plant had deposition rather than adsorption on Cu2+ or Cd2+. The...
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