气升式环流生物反应器处理废水厌氧过程研究  

Study on Anaerobic Process in Air-lift Loop Bioreactor for Wastewater Treatment

作　　者：江田民[1] 杨海光[1] 陈筛林[1] 丁富新[1] 

机构地区：[1]清华大学化工系,北京100084

出　　处：《化工环保》2004年第3期157-160,共4页Environmental Protection of Chemical Industry

基　　金：国家"九五"攻关项目(993150803)

摘　　要：采用气升式环流生物反应器处理模拟废水。周期性通入空气和氮气来实现厌氧-好氧交替过程。对厌氧-好氧过程和普通好氧过程进行了对比,研究了厌氧处理时间和曝气速率对生物除磷效果的影响。结果表明,厌氧过程可以显著地增强生物除磷效果,与普通好氧过程相比,在进水总磷质量浓度为10mg/L时,磷的去除率可以提高30%,而COD的去除基本不受影响;适当延长厌氧处理时间和适当增大厌氧过程曝气速率可以改善厌氧环境及活性污泥性能,提高磷的去除率。The air-lift loop bioreactor was used in simulated wastewater treatment.The alternation of anaerobic process and aerobic process were realized by periodical aeration of air and nitrogen.The anaerobic-aerobic process was compared with conventional aerobic process.The effects of anaerobic treatment time and nitrogen aeration rate on phosphorus removal efficiency were investigated.The results show that anaerobic process can significantly improve phosphorus removal effect.When the mass concentration of total phosphorus in influent is 10 mg/L,the removal rate of phosphorus can be increased by 30%,and the removal rate of COD is not affected.Prolonging properly anaerobic treatment time and increasing aeration rate of nitrogen can improve anaerobic environment and the activity of sludge,increasing the removal rate of phosphorus.

关 键 词：气升式环流生物反应器 厌氧过程 生物除磷 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]