电沉积-生物膜复合工艺处理含Cr^(3+)废水  

Treatment of Organic Wastewater Containing Cr^(3+) by a Complex Process of Electrodeposition and Biofilm

作　　者：李天成[1] 李鑫钢[1] 王大为[1] 袁绍军[1] 姜斌[1] 孙津生[1] 冯霞[2] 

机构地区：[1]天津大学化工学院化学工程研究所,天津300072 [2]太原化肥厂水汽车间,山西太原030021

出　　处：《农业环境保护》2002年第6期549-552,共4页Agro-Environmental Protection

基　　金：天津市自然科学基金重点资助项目(013802911)

摘　　要：采用新型微电解-生物膜法处理当前危害极为严重的含重金属Cr3+有机废水,并阐述其作用机理。在实验过程中,废水中的有机物,由生物膜中的好氧微生物与厌氧微生物菌群作为营养源而消耗;重金属离子(Cr3+)则通过电沉积去除一部分,同时生物膜吸附另一部分而去除,净化后废水能够达到工业回用水标准。试验结果表明,对C6H12O6含量为500mg·L-1,Cr3+含量为10mg·L-1的重金属离子有机废水,经处理后,C6H12O6含量为15—20mg·L-1,Cr3+含量为1mg·L-1以下。A novel complex method of micro electrolysis and biofilm was utilized to treat organic wastewater containing heavy metal ion (Cr3+), which was seriously harmful to human beings survival environment, and its purifying mechanism was also introduced in this article. The organic materials in wastewater were consumed as nutritious source of biofilm, consisting of aerobes and anaerobes. However, for Cr3+, one part was removed by electrodeposition, the other part was absorbed on biofilm. It was indicated that the treated wastewater was in line with the official standard and may be reused. In conclusion, the experimental results implicated that: for wastewater, which consisted of C6H12O6 (500 mg·L-1), Cr3+ (10 mg·L-1), after being treated, the contents of C6H12O6 and Cr3+ were in the scale of 20—30 mg·L-1, and less than 1 mg·L-1, respectively.

关 键 词：电沉积 复合工艺 微电解 生物膜 重金属离子 有机物 生物降解 含铬废水 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]