Whether the municipal secondary sewage can be used as circulatory cooling water in thermal power plants

an attempte in this aspect has been carried out in Huaneng Beijing Thermal Power Plant. Industrial operation shows that the municipal secondary sewage can be retreated with lime and polymeric ironic sulfate

supplementing adjustment of pH value by adding acid

sterilization by using liquid chlorine

application of effective waterquality stabilizing agent in circulatory cooling system

as well as utilization of ingotshaped chlorine as algaecide and bactericide. Thereby

the corrosion rate of brass tubes in the condenser can be reduced to less than 0.005mm per annual

the adhesion rate of viscous slurry in 30 days to less than 10mg/cm 2. practice shows the municpal secondary sewage in enrichment factor range of 2.02.5 can be used for circulatory cooling system

having good economical and social bellefits.