摘要
煤化工废水是一类典型的难生物降解工业废水。采用混凝-气浮法处理煤化工废水,并探讨其最佳运行参数。试验结果显示,混凝-气浮处理的参数选择为:气浮时间为9min,P(AM-DMD-MMA)投药量为8mg/L,溶气压力控制在0.4MPa^0.6MPa,且原水浓度越高,除油率越高,可达97%左右。对于煤化工含油废水,混凝-气浮法处理比单纯混凝沉淀处理效果更好,值得在煤化工工业推广应用。
Coal chemical wastewater is a kind of typical industrial wastewater which is difficult to biodegrade.In this experiment,coagulating-gas-suspension method were used to treat coal chemical industry wastewater,and the optimum operation parameters were discussed.The test results show that the parameters of the coagulation flotation are as follows：the air flotation time is9 min,the dosage of P（AM DMD MMA）is 8 mg/L,the pressure of dissolved gas is controlled in 0.4 MPa-0.6 MPa.The higher the concentration of the raw water,the higher the oil removal rate,which is more than 97%.For the oily wastewater of coal chemical industry,the effect of coagulating-gas-suspension treatment is better than that of pure coagulation precipitation treatment,and it is worth popularizing and applying in coal chemical industry.
出处
《山西化工》
2018年第3期202-204,共3页
Shanxi Chemical Industry
关键词
煤化工废水
混凝沉淀
气浮
影响
coal chemical wastewater
coagulation and sedimentation
air floatation
influence
