Present the iron internal electrolysis and neutralized coagulation adopt for pretreatment of the wastewater mention above,which lower the color degree and raise the biodegradability of wastewater.

• 以铁屑内电解和中和混凝作前处理,降低了废水的色度,提高了废水的可生化性,再利用两级生化处理,使废水达标排放。