Performance Study of Enhancing Pretreatment Process for Pre-denitrification Aerated Filter
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 90%, also NH4-N, TP and COD removal increased about 15% and 5% by adding a specific coagulant aid. TP removal was explained by chemical coagulation, sludge layer interception and a small portion of assimilation by anaerobic and facultative bacteria from refluxing. TCOD removal was explained by degradation action, physical interception and bio-absorption for little granular COD by sludge layer. Through jar experiment, it was investigated that suspended sludge formed in GS sedimentation tank has characters of adsorbing even enriching NH4-N of influent and enrichment coefficient was above 4. In addition, Hydrolysis in the GS sedimentation tank behaved as poor degree.
Han Hong Jun Li Yu Fei Xu Chun Yan Hu Hong Bo Wang Bing
State Key Laboratory of Urban Water Resources and Environment,Harbin Institute of Technology,Harbin, State Key Laboratory of Urban Water Resources and Environment,Harbin Institute of Technology,Harbin, State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbi
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）