镀铜铁内电解预处理焦化废水的研究

Pretreatment of Coking Wastewater by Copperized Iron Internal Electrolysis System

采用镀铜铁内电解法对焦化废水进行了预处理,研究了pH、镀铜量、镀铜铁的投加量以及处理时间对处理效果的影响。结果表明,镀铜铁内电解法COD去除率比传统的铁炭内电解、铁铜内电解高,可达66.07%。通过正交实验确定了最佳工艺条件：pH=4.0、镀铜时间为2.0 min、镀铜铁投加量为500 g/L、处理时间为40 m in。连续进水小试实验出水水质稳定,COD去除率在40%～50%,不会引起板结问题。

The copperized iron internal electrolysis system was used for the pretreatment of coking wastewater. The removal rate of COD can reach 66.07% ,higher than traditional Fe - C system and Fe -Cu system. The optimum conditions were： pH = 4.0, time of copperization 2. 0 min, dose of copperized iron 500 g/L and treatment time 40 min. The COD removal rate of the effluent of continuous flow experiment was 40% -50% , without the tickler of agglomeration.