In order to achieve the goal of energy conservation and emission reduction. The sewage discharged up to the standard were charged a sewage discharge fee. At the same time, the salt content in wastewater should be less than 2 000 mg /L, the use of groundwater is strictly prohibited， and surface water must be purchased for production water. In view of the situation of charging at both ends， In order to make the external drainage reach the index of secondary utilization， and to reduce the amount of primary water consumption, and the amount of sewage. The combination process of nanofiltration membrane and high pressure reverse osmosis were adopt to make the reclaimed water basically reused. At the same time, it is applied in the reclaimed water reuse membrane technology is a new low cost and environmental protection technology. It is also a major trend in the future development of wastewater treatment.
郭 杰，张俊杰，赵建威. 中水回用技术的研究[J]. 煤炭与化工, 2021, 44(6): 150-152.
Guo Jie, Zhang Junjie, Zhao Jianwei. Study on the technology of reclaimed water reuse. CCI, 2021, 44(6): 150-152.
