乳化液废水处理系统工艺优化试验研究
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摘要
为解决某钢厂乳化液废水处理系统超滤污堵严重的问题,探索工艺优化试验研究。通过小试实验结果确定工艺参数:调节池内乳化液加温加酸破乳后,投加液碱控制pH值于7～9,选择PAFC作为絮凝剂,投加浓度200 mg/L,选择阳离子型PAM为助凝剂,投加浓度1 mg/L。经现场试运行表明:通过调节PAFC和PAM的投加浓度,乳化液系统气浮出水CODCr去除率达93.7%,气浮出水可直接排入稀碱油废水系统进行二次处理,彻底解决了超滤污堵造成乳化液系统无法正常运行的问题。
To solve the problem of severe sewage blockage of the ultra-filters in the emulsion wastewater treatment system of a steel plant, Jingke Xiafeng company carried out a process optimization experimental study. Through small test to determine the process parameters: after regulate the emulsion in the tank by heating and adding acid for demulsification,add liquid soda to control the pH value at 7-9, choose PAFC as flocculants with addition concentration of 200 mg/L, while choose cationic PAM as the coagulant aid with addition concentration of 1 mg/L. Field test running showed that through adjusting the addition concentration of PAFC and PAM, the removal rate of air floated water CODCr of the emulsion system reached 93.7%, while the air floated water can be directly discharged into dilute alkali oil wastewater system for secondary treatment, which has completely solved the problem of sewage blockage of the ultra-filters seriously affecting the normal operation of the emulsion system.
To solve the problem of severe sewage blockage of the ultra-filters in the emulsion wastewater treatment system of a steel plant, Jingke Xiafeng company carried out a process optimization experimental study. Through small test to determine the process parameters: after regulate the emulsion in the tank by heating and adding acid for demulsification,add liquid soda to control the pH value at 7-9, choose PAFC as flocculants with addition concentration of 200 mg/L, while choose cationic PAM as the coagulant aid with addition concentration of 1 mg/L. Field test running showed that through adjusting the addition concentration of PAFC and PAM, the removal rate of air floated water CODCr of the emulsion system reached 93.7%, while the air floated water can be directly discharged into dilute alkali oil wastewater system for secondary treatment, which has completely solved the problem of sewage blockage of the ultra-filters seriously affecting the normal operation of the emulsion system.
引文
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[4]赵庆,关卫省,马丽艳,等.超滤法处理含油废水的试验[J].长安大学学报,2006,26(5):115-118.
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