In the experiment the wastewater composition complex, contains a large amount of furan ring kind substances is a mixture of a variety of wastewater. Wastewater pH value in 1.6, the COD value in the 2.0×105 mg/L fluctuations, and salinity can up to 13%. According to the situation of water quality, using microelectrolytic method to the wastewater pretreatment, and grope for the optimum process conditions.The experimental results show that wastewater pH value is 3, carbon iron mass ratio is 1∶2, the reaction time is 3 h, the iron carbon add content is 1%, micro electrolytic process for the furan ring kind of wastewater treatment effect is good, COD removal rate can reach 57%, the total color removal rate can reach 80%.