The industrial application of circulating water zero discharge technology in a 600 MW grade thermal power plant and its benefit of water saving and emission reduction were studied. The results show that

by using new high efficiency reagent with performances of anti-scale

anti-corrosion and bactericide

and building side flow filtration system to keep the turbidity below 20 NTU

the circulating water system could run without scale

corrosion and biological silt at concentration ratio of 10～12. After the application of this technology

the flow of make-up water reduced by 934 m~3/h and the circulating water discharge reduced by 645 m~3/h

with a benefit of water saving and emission reduction of 4.57 million yuan per year. The research results provide a new thought for low-cost wastewater zero discharge of thermal power plants

with vast applied prospects.