碳源对序批式生物反应器工艺脱氮除磷的影响  

Effect of carbon source on nitrogen and phosphorus removal by using sequencing batch reactor

作　　者：贾艳萍[1,2] 李军[1] 张兰河[1] 王莹[1] 

机构地区：[1]东北电力大学化学工程学院,吉林吉林132012 [2]沈阳农业大学食品学院,辽宁沈阳110866

出　　处：《化学工程》2011年第5期10-14,共5页Chemical Engineering(China)

基　　金：吉林省科技发展计划项目应用基础研究(20090599)

摘　　要：以模拟废水为处理对象,采用序批式生物反应器(SBR)考察不同碳源对COD、NH4-N和PO4-P去除效果的影响。结果表明:当SBR运行周期为7 h,水力停留时间为38 h,pH值为7.5—8.3,污泥龄维持在14 d,PO4-P去除率作为判断最适合碳源的决定性因素,分别采用葡萄糖、果糖、麦芽糖、淀粉作为唯一碳源时,葡萄糖最适合作为碳源,其COD、NH4-N和PO4-P去除率分别达到89%,93%和88%。采用葡萄糖/有机酸(如甲酸、乙酸、丙酸和丁酸)混合物(质量比1∶1)作为唯一碳源时,葡萄糖/乙酸混合最适合作为碳源,厌氧阶段乙酸易被微生物利用形成储能物质,能量的产生与聚β羟基丁酸(pHB)的合成达到了平衡,COD、NH4-N和PO4-P去除率分别达到97%,96%和96%。The effects of different carbon sources on removal efficiency of COD,NH4-N and PO4-P in imulative wastewater were investigated by using a sequencing batch reactor（SBR） when a total operation cycle,hydraulic retention time（HRT）,pH and sludge age were 7 h,38 h,7.5-8.3 and 14 d,respectively.The results show that the removal efficiency of PO4-P is used as a decision factor to judge the most suitable carbon source.When glucose,fructose,maltose and starch are used as a sole carbon source,glucose is the most suitable carbohydrate source and the removal efficiency of COD,NH4-N and PO4-P is 89%,93% and 88%,respectively.When a mixture of mass ratio 1∶1 of glucose to organic acids,including methanoic acid,acetic acid,propanoic acid and butyric acid is used as a sole carbon source,a mixture of glucose-acetic acid is the most suitable carbon source because acetic acid is readily utilized to form energy-storage substance by microorganisms under anaerobic conditions,and the balance is achieved between energy generation and polyhydroxybutyrate（PHB） synthesis.The maximum removal efficiency of COD,NH4-N and PO4-P is 97%,96% and 96%,respectively.

关 键 词：碳源 COD NH4-N PO4-P SBR 

分 类 号：X703[环境科学与工程—环境工程]