H2O2／Fe2＋氧化偶合混凝法处理干膜废水的研究

摘要

he treatment of dry film-containing wastewater w i th oxidation-coagulating method was studied. Factors affecting Fenton reagent o xidation and coagulation, including the concentration of H2O2, the concent ration of Fe2＋, pH, temperature, time and coagulation pH, are discussed . The experiment results showed the removal rate of COD reached 87.7％, when the concentration of H2O2 was 457.0mg/L, the concentration of Fe2＋ w as 400mg/L, pH was 4.0, the time of the reaction was 180min, coagulating pH was 8～9, the quality of effluent could meet the standards.%本文研究了H2O2／Fe2氧化偶合混凝法处理印 刷 电路板厂干膜废水。讨论了包括过氧化氢浓度、亚铁离子浓度、pH值、温度、时间和混凝pH 值等影响因素。试验结果表明，当过氧化氢浓度为457.0mg/L、铁离子浓度为400mg/L、氧 化pH值4.0、反应温度为40℃、反应时间180min时，COD去除率达84.7％，出水的水质达到 排放标准。