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.
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