厌氧垃圾填埋系统渗滤液的生物毒性研究  

Study on Biotoxicity of Leachate in Anaerobic Bioreactor Landfill System

作　　者：江娟[1] 刘婷[1] 徐丽丽[1] 谢文刚[1] 陈朱蕾[1] 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《中国给水排水》2007年第7期51-54,共4页China Water & Wastewater

基　　金：武汉市重点科技攻关项目(20056002052)

摘　　要：以嗜热四膜虫作为毒性试验生物,对厌氧生物反应器垃圾填埋系统渗滤液的生物毒性变化进行了研究。结果表明,通过将渗滤液回灌使其在厌氧生物反应器填埋系统中得到处理,可使渗滤液的生物毒性随填埋时间的延长而逐渐降低;渗滤液的半致死浓度(LC50)与COD呈负相关,其常规理化指标并不能完全反映渗滤液在环境中的生物毒性;较高浓度的渗滤液对四膜虫的呼吸量有抑制作用。Taking Tetrahymena thermophila as the object of the toxicity experiment, the biotoxicity variation of leachate in the anaerobic bioreactor landfill system was studied. The results show that the biotoxicity of leachate treated by the anaerobic bioreactor landfill system gradually decreases with landfill time prolongation. There is negative correlation between lethal concentration 50% （ LC50 ） of the leachate and COD. The conventional physicochemical indexes can not fully reflect the biotoxicity of leachate in the environment. The leachate with higher concentration has an inhibitory effect on the respiration of Tetrahymena thermophila.

关 键 词：厌氧生物反应器 垃圾填埋 渗滤液 生物毒性 

分 类 号：X703[环境科学与工程—环境工程]