Purification of Organic Wastewater Containing Cu^(2+) and Cr^(3+) by a Combined Process of Micro Electrolysis and Biofilm  

作　　者：李天成 姜斌 冯霞 王大为 袁绍军 李鑫钢 

机构地区：[1]School of Chemical Engineering and Technology,Wianjin University [2]Taiyuan Fertilizer Plant [3]School of Chemical Engineering and Technology,Tianjin University

出　　处：《Chinese Journal of Chemical Engineering》2003年第2期146-150,共5页中国化学工程学报（英文版）

基　　金：Supported by the Natural Science Foundation of Tianjin,China(No.013802911).

摘　　要：A complex process of micro electrolysis and biofilm was developed to continuously treat organic wastew-aters containing heavy metal ions such as Cu2+ and Or3+, and the relevant purifying mechanism was also addressed. In detail, organic materials in wastewater could be consumed as nutritious source by biofilm composed of aerobes and anaerobes. However, for heavy metal ions (Cu2+, Cr3+), part was removed by electrodeposition, and some was adsorbed on biofilm. In order to compare with the combined process of micro electrolysis and biofilm, the experimental data of micro electrolysis process (intermittent) or biofilm process (continuous) were provided, and the kinetic data of C6H12O6 (glucose) biodegradation by cultured microbes or acclimated microbes were also obtained. These experimental results indicated that for wastewater initially consisted of CeH12O6 (500mg-L-1), Cu2+ and Cr3+ (10mg-L-1), after treatment, its concentrations of C6H12O6, Cu2+ and Cr3+ were lowered to the level of 55-65mg.L^1, and less than 1mg-L-1, respectively. And the industrial reused water standards could be met by treated wastewater.A complex process of micro electrolysis and biofilm was developed to continuously treat organic wastew-aters containing heavy metal ions such as Cu^2+ and Cr^3+,and the relevant purifying mechanism was also addressed. In detail,organic materials in wastewater could be consumed as nutritious source by biofilm composed of aerobes and anaerobes,However,for heavy metal ions (Cu^2+,Cr^3+),part was removed by electrodeposition,and some was adorbed on biofilm.In order to compare with the combined process of micro electrolysis and biofilm,the experimental data of micro electrolysis process (intermittent )or biofilm process (continuous)were provided,and the kinetic data of C6H12O6(glucose)biodegradation by cultured microbes or acclimated microbes were also obtained,These experimental results indicated that for wastewater initially consisted of C6H12O6(500 mg.L^-1),Cu^2+ and Cr^3+(10mg.L6-1),after treatment,its concentrations of C6H12O6,Cu^2+ and Cr^3+ were lowered to the leve of 55-65 mg.L^-1),after treatment,its concentrations of C6H12O6,Cu^2+ and Cr^3+ were lowered to the level of 55-65 mg.L^-1,and less than 1mg.L^-1,respectively,And the industrial reused water standards could be met by treated wastewater.

关 键 词：ELECTRODEPOSITION BIOFILM heavy metal ions organic materials BIODEGRADATION 

分 类 号：X703[环境科学与工程—环境工程]