生物沥滤污泥重金属污染的潜在生物毒性评价  

Evaluation on Potential Ecological Toxicity about Heavy Metal Pollution in Biological Leaching Sludge

作　　者：陈静[1,2] 黄明[1,3] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]广西环境监测中心站,南宁530022 [3]南宁市建筑管理处,南宁530023

出　　处：《新疆环境保护》2012年第2期20-24,共5页Environmental Protection of Xinjiang

基　　金：重庆大学三峡库区生态环境教育部重点实验室访问学者基金项目;广西环境工程与保护评价重点实验室基金资助项目(0801Z01)

摘　　要：采用沉积物质量基准法(SQGs)和Hakanson指数法对沥滤前后城市污泥中重金属的潜在生物毒性进行了定性和定量的评价,结果表明氧化亚铁硫杆菌(A.ferrooxidans菌)对Cu、Cd的脱毒作用优于氧化硫硫杆菌(A.thiooxidans菌)。沥滤后污泥的综合潜在生态危害指数均能下降91.0%以上,且A.ferrooxidans菌沥后污泥的潜在生物毒性最弱,其综合潜在生态危害指数为84.75,是生物沥滤去除城市污泥重金属工程应用的适合菌种。The Sediment Quality Guidelines（SQGs） and Hakanson index method were used to qualitatively and quantitatively assess the potential biological toxicity of heavy metals in the city sludge which was leached before and after.The result showed that the detoxication of ferrous oxide Acidithiobacillus on Cu and Cd was better than that of sulfur oxide Acidithiobacillus.After bioleaching,the synthetic potential biological risk index of sludge was decreased by more than 90%.The potential biological toxicity of sludge leached by ferrous oxide Acidithiobacillus is the weakest,and its synthetic potential biological risk index was 84.75%.So the ferrous oxide Acidithiobacillus was considered as a proper bioleaching bacteria for removing heavy metals from sewage sludge in the city.

关 键 词：生物沥滤污泥 重金属 潜在生物毒性评价 

分 类 号：X703[环境科学与工程—环境工程]