中水回用
 Water reuse treatment system

       中水回用是指处理后达标排放的工业废水，再经过深度处理后做为生产用水和循环冷却水的补充水加以回收利用，达到节省水资源的目的。
       Reuse of reclaimed water means industrial wastewater which reaches the discharging standard will be deep treated to be as make-up water for service water and circulating cooling water, which is for saving water resource.

       主要工艺有：石灰软化+高效澄清池+变孔隙滤池、混凝沉淀+膜处理（超滤、反渗透）等，其中以混凝沉淀+膜处理的工艺应用最为广泛。
       Main process:lime softening +effcient clarification tank +variable void filter, coagulating sedimentation+film treatment(UF ,RO),etc, Among that, coagulating sedimentation +film treatment is most widely applied.