摘要
采用泡沫镍材料作电解废水装置的阴极以提高单位电化学反应器体积的电流,使电极与废水界面之间的作用可在低电流密度下进行。用新型电极构成的电化学装置处理印染废水,研究过程的停留时间、施加的电流强度以及不同 pH 值对废水中的 COD_(Cr)、汞和浊度去除效果的影响。结果表明电流强度增大,COD_(Cr)、汞和浊度的去除率均增加,最佳电流强度为1.0～1.2A;废水停留时间增加,各污染物的去除率增大,最佳停留时间约为20 min。
Foam nickel was used as a cathode of electrolytic wastewater to operate for a relatively high current per unit of cell volume,but with a low current density at the electrode-wastewater interface.The electrolytic cell composed with new elec- trodes was used to treat the dyeing wastewater for studying the effects of processing interval,current and pH on the removal of COD_(Cr),mercury and turbidity,respectively.It's shown that the removal efficiencies of COD_(Cr),mercury and turbidity increase as the current exerted on the electrodes increases,and the optimal current is 1.0-1.2 A,and the removal efficiencies for all kinds of pollutants increase as the residence time in the electrochemical cell increases,the optimal residence time is about 20 min.
出处
《现代化工》
CAS
CSCD
北大核心
2004年第z1期123-125,共3页
Modern Chemical Industry
关键词
泡沫镍电极
印染废水
电解
foam nickel electrode
dyeing wastewater
electrolysis
