一株高效产絮菌的筛选、絮凝条件优化及对重金属废水处理性能研究  

SCREENING,CULTURING OF A STRAIN OF FLOCCULANT-PRODUCING BACTERIA AND REMOVAL OF HEAVY METALS FROM WASTEWATER

作　　者：刘倩[1] 付丽丽[1] 孙家君[2] 李凤达 姜彬慧[1] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110004 [2]北京桑德环境工程有限公司,北京101102

出　　处：《环境工程》2015年第6期63-66,共4页Environmental Engineering

基　　金：国家自然科学基金(51278090);水体污染控制与治理科技重大专项(2013ZX07202-010-05);辽宁省科学事业公益研究基金项目(GY2014-C-011)

摘　　要：从活性污泥、水体底泥、植物根系土壤和草莓种植土壤中筛选、分离、纯化,获得了高絮凝活性的菌株,并考察发酵液用量、助凝剂用量以及碳、氮源种类对絮凝活性的影响及菌株对实际重金属废水的絮凝作用。结果表明:以葡萄糖为碳源,酵母膏为氮源,菌体发酵液用量0.2 m L,助凝剂用量0.8 m L时,菌株QB1的絮凝性最高,可达到93%。其对多种重金属废水均具有较好的处理性能,对含铅废水的去除率最高可达99%以上。High flocculating activity strains were screened and cultivated from activated sludge,water sediment,plant roots soil and strawberry planting soil. The flocculating activity of the strains was investigated by changing fermentation liquid dosage,coagulant dosage,carbon and nitrogen sources,and applied in the heavy metal wastewater treatment. The results showed that the strain QB1 can reach the highest flocculation rate of 93%,when using glucose as carbon source and yeast extract as nitrogen source,with the bacteria liquid dosage of 0. 2 m L,and coagulant dosage of 0. 8 m L. The removal rate of lead ion from the wastewater can be as high as 99% above.

关 键 词：产絮菌 碳源 氮源 絮凝活性 重金属 

分 类 号：X172[环境科学与工程—环境科学] X703