异波折板水解酸化-A^2O一体化反应器实验研究  

Integrated reactor of opposite folded plate hydrolysis and acidogenosis-A^2O for sewage treatment

作　　者：叶长兵[1,2] 韩相奎[3] 汤洁[2] 毕冬[3] 庄金鹏[3] 王雷[3] 

机构地区：[1]玉溪师范学院资源环境学院,玉溪653100 [2]吉林大学环境与资源学院,长春130026 [3]吉林建筑工程学院市政与环境工程学院,长春130021

出　　处：《环境工程学报》2010年第3期503-507,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50778080);云南省教育厅项目(08Z0065);云南省科技厅项目(2009CD099)

摘　　要：设计了异波折板水解酸化-A2O一体化反应器,进行生活污水处理的实验研究。10个月的实验结果表明,系统的最佳水力停留时间(HRT)为8 h时,最适COD进水浓度为240~600 mg/L,最佳混合液回流比(r)-污泥回流比(R)为250%~100%。控制反应器于以上运行参数下,25±2℃所对应的COD、TN和TP去除率分别为96.84%、67.55%和81.92%。当温度降至7℃时,其COD、TP和TN分别降至86.35%、50.25%和65.68%。基于实验分析结果,阐明了一体化反应器高效性的机理在于异波折板水解酸化段具有高效传质特性和A2O段具有复合式活性污泥-接触氧化好氧池的特点。Integrated reactor of opposite folded plate hydrolysis and acidification-A2O was designed to treat low strength sewage.The results of 10 months indicated that the optimal hydraulic retention time（HRT） was 8 h;the optimal influent COD concentration was 240~600 mg/L;the optimal mixed-liquor return ratio（r）-sludge return ratio（R） was 250%~100%.Under above conditions,the COD,TP and TN removal rates were 96.84%,67.55% and 81.92% at 25±2℃,respectively.When the temperature decreased to 7℃,the COD,TP and TN removal rates decreased to 86.35%,50.25% and 65.68% respectively.Based on the results of trial,the mechanisms of higher integrative reactor efficacy in treatment of low strength sewage were owed to high efficient mass-transfer of hydrolysis and acidification stage and the hybrid actived sludge-contact oxidation in aerobic tank at A2O stage.

关 键 词：异波折板 水解酸化 A2O一体化反应器 传质 

分 类 号：X703.1[环境科学与工程—环境工程]