废水提标深度处理方法对比研究  

Research on the comparison of different methods for the advanced treatment of the wastewater for discharge

作　　者：陈攀 刘元 罗运柏 于萍[1] CHEN Pan;LIU Yuan;LUO Yun-bai;YU Ping(Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China;Jin＇ ao Technology（Hubei）Chemical Co.,Ltd.,Qianjiang 433132,China)

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072 [2]金澳科技(湖北)化工有限公司,湖北潜江433132

出　　处：《应用化工》2018年第6期1223-1226,共4页Applied Chemical Industry

摘　　要：针对废水提标后要求排水COD小于50 mg/L的国家标准,采用了絮凝、吸附、Fenton氧化、电絮凝以及电化学氧化等方法对COD含量在80~100 mg/L的废水进行了深度处理。结果表明,5种方法处理后的废水都能满足提标排放要求,絮凝和吸附法的加药量较大,存在污泥量增加和吸附剂再生问题。在电流密度5 mA/cm^2,电极间距5 mm,电解15 min时,电化学氧化法可使COD降到48.84 mg/L,与电絮凝和Fenton氧化相比,是一种高效实用的废水提标处理方法。Based on the upgraded national discharge standard of the value of COD should be less than50 mg/L,several methods including flocculation,adsorption,Fenton oxidation,electrocoagulation and electrochemical oxidation had been adopted for the advanced treatment of the wastewater of which the COD is between 80 ~ 100 mg/L. The results show that after treatment of the above methods,the wastewater all can reach the discharge standard. The dosage of flocculation and adsorption is large,which may cause the problem of sludge increase and adsorbent regeneration. The electrochemical oxidation method can reduce the COD to 48. 84 mg/L when the current density is 5 mA/cm^2,the electrode space is 5 mm and the reaction time is 15 min. The method of electrochemical oxidation has advantages over electrocoagulation and Fenton oxidation,it is an efficient and practical method for the upgraded treatment of wastewater.

关 键 词：石化废水 提标 深度处理 COD 方法比较 

分 类 号：TQ09[化学工程] X703[环境科学与工程—环境工程]