混凝—折流式反应器对垃圾渗滤液处理的试验研究  

Treatment of landfill leachate by the integrated coagulation and buffering reactor process

作　　者：唐海[1] 蔡昌凤[1] 卢少勇[2] 刘桂中[3] 

机构地区：[1]安徽工程科技学院,安徽芜湖241000 [2]中国环境科学研究院,北京100012 [3]北京市环境保护科学研究院,北京100083

出　　处：《环境污染与防治》2006年第5期326-328,共3页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.50374001);安徽工程科技学院青年科技基金资助项目(No.2003YQ005)。

摘　　要：采用混凝、三组水解池和好氧生物滤池串连组成的折流式反应器(BR)联合工艺,对处理芜湖市南郊垃圾填埋场产生的渗滤液进行了试验研究,确定了混凝剂的最佳投加量、最佳碱化脱氮pH等工艺参数。试验结果表明,经过水解反应器(HUSB)反复对垃圾渗滤液进行水解酸化后,能逐步提高废水的BOD5/COD(B/C)(约0.2～0.4),大大提高了好氧生物滤池的COD容积负荷,出水COD平均<400mg/L,NH3N平均<30mg/L。The integrated process of coagulation and buffering reactor, consisting of three-stage hydrolysis and aerobic biodegradationg in six upflow cells, was employed for treating leachate of a sanitary landfill in south surburb of Wuhu, Anhui, China. Approximately 40% of COD and NH4^＋-N in the raw leachate were removed in the coagulation unit operating at 22 ℃ and with additions of 100 mg/L of PAC coagulant and a dose of lime to raise the pH （to 〉9） for effective ammonia stripping. The 3-stage hydrolysis substantially improved biodegradability of pretreated leachate （BOD5/COD ratio increase from 0. 2 to 0.4） and enhanced biodegradation in the biofilters, Feeding with a pretreated leachate （COD= 1 900 mg/L and NH4^＋-N= 250 mg/L）, the buffering reactor effluent had a COD of less than 400 mg/L and NH4^＋-N of less than 30 mg/L.

关 键 词：垃圾渗滤液 折流式反应器 好氧生物滤池 水解反应器 混凝 

分 类 号：X703.3[环境科学与工程—环境工程]