【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。更多还原

【Abstract】 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.更多还原