超滤技术在冷轧浓油废水处理中的应用

 冷轧废水属于冶金污废水中处理难度最高的一类废水，水质成分复杂、浓度高、性质稳定难于降解且变化显著，特别是其中的浓油废水的高含油以及复杂多变的污染成分特质，需要采用具有突出针对性的工艺以实现达标处理，进而促成冶金过程的绿色发展。介绍了超滤除油技术应用于某冷轧厂浓油乳化液废水处理，采用无极陶瓷超滤进行除油处理，借助超滤循环，将浓油废水含油率降低，为后续处理稳定了水质，超滤产水含油在20 mg/L，油去除率大于96%，运行周期可达10天，整体效果较好。同时，对系统的运行控制、化学清洗和膜污染防治进行了研究。经过实际摸索，找出有针对性的运行控制参数与膜污染防治措施，进而实现超滤在冷轧浓油废水中的稳定运行，应用效果优良。

Ultra-filtration technology on treatment of cold-rolled oily water

Cold rolling wastewater treatment most difficult in the metallurgical sewage wastewater, Its water quality complex composition, high concentration, stable, difficult degradation, water quality varies significantly, especially oil pollution of complex components of high concentration of oil wastewater, Need to use technology to achieve outstanding specific standard treatment, in order to achieve green development of metallurgical processes. Introduces the ultra filtra-tion oil removal technology applied to oil emulsion wastewater treatment in a cold-rolled. infinite ceramic ultra filtration is adopted to improve the oil removal in this paper,With the aid of ultra filtration loops,reduce the oil content of waste-water. Ultra filtration water production oil in 20 mg/L,oil removal rate is more than 96%,operation cycle can be up to 10 days,the overall effect is better. The operation control of the system,chemical cleaning and membrane pollution preven-tion and control are studied,find out targeted operation control parameters and membrane pollution prevention and control measures,and realization of ultra filtration in the cold rolling thick oil wastewater in a stable and good application effect.