融合菌-活性污泥联合曝气吸附处理重金属铬  

Biosorption of Chromium by Yeast Fused Strain-Activated Sludge in Aeration

作　　者：杨峰[1] 尹华[1] 彭辉[1] 叶锦韶[1] 卢显妍[1] 何宝燕[1] 张娜[1] 

机构地区：[1]暨南大学环境工程系,广州510632

出　　处：《环境科学与技术》2006年第5期79-80,90,共3页Environmental Science & Technology

基　　金：国家自然科学基金资助项目(50278040);广东省科技计划项目资助项目(2003C32103);广东省科技计划重大专项(2004A30308002)

摘　　要：研究了融合菌RHJ-004与活性污泥联合曝气处理含铬废水的生物吸附性能。结果表明,融合菌RHJ-004与活性污泥联合曝气对铬具有良好的处理效果,投加10g/L菌体、6g/L污泥,处理50mg/L的铬液,还原率可达83.26%,去除率达72.04%。该吸附剂对处理酸性含铬废水具有很大的潜力,在pH=1￣5时,还原率均>80%,去除率均>70%;溶解氧是影响该吸附过程的一个重要参数,当DO=2￣4mg/L时,生物吸附效果较好,还原率达到75%以上,去除率也超过65%;融合菌RHJ-004与活性污泥对六价铬的联合吸附可用Langmuir模型和Freundlich模型描述,但Freundlich模型的拟合效果更好。The capacity of biosorption of chromium contained wastewater by yeast fused strain RHJ-004 and activated sludge in aeration was discussed. Results showed that good efficiency was achieved when 10g/L strain and 6g/L activated sludge were used to adsorb 50mg/L Cr-wastewater with reduction and removal efficiency up to 83.26% and 72.04%. The reduction and removal efficiency were over 80% and 70% at pH of 1~5, which showed that biosorption medicament was suitable for acidic Cr-wastewater treatment. There was favourable impact with reduction and removal efficiency over 75% and 65% when DO was 2~4 mg/L. Both Langmuir and Freundlich adsorption models were suitable for describing biosorption of Cr6+ by yeast fused strain RHJ-004 and activated sludge and the latter was better.

关 键 词：融合菌 活性污泥 铬 曝气 生物吸附 

分 类 号：X703.1[环境科学与工程—环境工程]