摘要：

采用全自动净水器+超滤组合工艺,对山西省某水泥厂排放废水进行预处理,联合后续反渗透工艺以实现中水回用,处理水量为28 t/h.经该工艺处理后,最终出水水质良好,浊度由34.1 NTU 降至0,总硬度由3 160 mg/L降至40 mg/L,可直接回用于该水泥厂余热发电循环水补充用水,出水量为20 t/h,回用率达75%.工程实践表明,该联合工艺可实现对水泥厂排放废水的深度处理和高质回用.

关键词: 中水回用, 水泥厂, 废水回用

Abstract:

The combined process,full automatic purifier+ultra-filtration,has been used for the pretreatment of dis- charged wastewater from a cement plant in Shanxi Province. Then the subsequent reverse osmosis process has been used for realizing recycled water reuse. Its treatment capacity of water is 28 t/h. The quality of the final effluent is favorable. For example,the turbidity drops from34.1 NTU to 0,and total hardness drops from 3 160 mg/L to 40 mg/L. Therefore,it can directly be reused as make-up water for the excess heat power circulating water in the cement plant. The water yield is 20 t/h,and the rate of reuse up to 75%. It has been proved by practical application that the combined process could guarantee that the advanced treatment of discharge wastewater from cement plants is stable and its recycle quality is high.

Key words: recycled water reuse, cement plant, wastewater reuse

中图分类号: 

• X703