摘要
研究了以铝作阳极采用脉冲电絮凝技术对难降解染料废水的处理,探讨了脉冲电源脉冲占空比、脉冲频率、电流密度、电解时间和废水浓度等因素对废水色度和COD去除率的影响,并对脉冲方式在脱色率和COD去除率、材耗及能耗等方面进行了对比研究。结果表明,与直流电絮凝相比,脉冲电絮凝技术在处理难降解染料废水中有着明显的节能优势,单脉冲和双脉冲电絮凝其能耗分别降低了84%和87%,其电极消耗则分别与之持平和增加了93%。
A laboratory scale experiment was conducted to investigate degradation of recalcitrant dyestuff in water using pulse electro-coagulation method in respect of pulse duty factor, pulse frequency, current density and the duration of electrolysis. Comparative study was also made as to direct current (DC) electro-coagulation and single/double pulse electro-coagulation, showing the significant advantage of pulse electro-coagulation over DC electro-coagulation in terms of energy saving and the consumed amount of electrodes.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2009年第9期144-147,共4页
Environmental Science & Technology
基金
国家水体污染控制与治理科技重大专项(2008ZX07208-003)
关键词
脉冲
电絮凝
印染废水
pulse
electro-coagulation
dyeing wastewater