电絮凝-三维电极法预处理高浓度对氰基苯酚废水  

Pretreatment of high concentration p-cyanophenol wastewater by the combination of electrocoagulation and three-dimensional electrode method

作　　者：石梁 姚梦 刘喆 江博[1] 汪冬芳 段少芳 戴捷[1] Shi Liang;Yao Meng;Liu Zhe;Jiang Bo;Wang Dongfang;Duan Shaofang;Dai jie(College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou 434023,China;Jiangling County Environmental Monitoring Brigade,Jingzhou 434101,China)

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023 [2]江陵县环境监察大队,湖北荆州434101

出　　处：《工业水处理》2020年第9期89-93,共5页Industrial Water Treatment

摘　　要：采用电絮凝-三维电极组合工艺预处理高浓度对氰基苯酚废水,结果表明,电絮凝处理过程中,在pH为8.0,电流密度为70 mA/cm^2,极板间距为1.5 cm,反应时间为30 min的优化条件下,COD、氨氮、TP的去除率分别达到了35.69%、49.9%、55.32%。电絮凝出水进入三维电极反应器,三维电极法处理过程中,在电流为8 A,pH为7.5~8.5,反应时间为120 min的优化条件下,COD、氨氮、TP的去除率分别达到了81.57%、66.63%、56.71%。经该组合工艺预处理后的高浓度对氰基苯酚废水,易降解有机物和可生物降解有机物含量大幅增加,有利于废水的后续深化处理。The combination of electrocoagulation and three-dimensional electrode was used to pretreat high-concen-tration p-cyanophenol wastewater.The results showed that the removal rates of COD,ammonia nitrogen and TP rea-ched 35.69%,49.9%and 55.32%respectively under the optimal electrocoagulation conditions of pH 8.0,current density 70 mA/cm2,plate distance 1.5 cm and reaction time 30 min.The effluent of the electrocoagulation entered the three-dimensional electrode reactor.In the process of three-dimensional electrode treatment,the removal rates of COD,ammonia nitrogen and TP reached 81.57%,66.63%and 56.71%respectively under the optimal conditions of current 8 A,pH 7.5-8.5 and reaction time 120 min.The high-concentration p-cyanophenol wastewater after pretreat-ment by this combined process has a greatly increased content of easily degradable organic matter and biodegradable organic matter,which is beneficial to the further treatment of wastewater.

关 键 词：电絮凝 三维电极法 对氰基苯酚废水 

分 类 号：X703.1[环境科学与工程—环境工程]