摘要
采用超声波强化混凝沉淀法处理制革废水 ,考察了超声波的作用时间和施加方式、混凝剂投加量等因素对降低废水中有机物的影响 .实验结果表明 :只用超声波作用废水 60s,COD去除率为 4 0 6% ;混凝剂总浓度为1 0 0mg/L时COD去除率最高 ;先施加超声波 60s,再投加混凝剂 ,COD去除率最高可达 73 2 % ,比不用超声波时提高 1 0 %以上 .因此 。
The effect of ultrasonic treatment on flocculating settling of tannery effluent was studied, removal of COD in particular was did. The influences of irradiation method and duration of ultrasonic as well prescription of coagulants on the efficiency of minimizing organic chemicals in waste water were investigated. The results show that:① when waste water was treated only by ultrasonic for 60s, the removal rate of COD was 40 6%;② when total concentration of coagulants increased to 100mg/L, the highest removal rate of COD was achieved; ③ when waste water was firstly treated with ultrasonic for 60s, then flocculated with coagulants, the removal rate of COD came to 73 2%, 10% higher than the control without ultrasonic. Thus the treatment of tannery waste water with flocculating settling technology can be effectively strengthened by ultrasonic.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第5期102-104,共3页
Environmental Science
基金
国家自然科学基金资助项目 (2 0 0 76 0 2 9)
教育部骨干教师基金资助项目
