Practice of boiler water low phosphate treatment in steam power plants

The artical introduces the problems in boiler water treatment in steam power plants. The problems are that pH eligibility is low and that scaling rate of water wall tube is high. they are improving the boiler water treatment,changing from phosphate treatment to low phosphate treatment (pH9.4～9.6,PO 3- 42～3 mg/L).After one year application,the new treatment method has had success. The water and steam quality eligibility gets higher,scaling rate of water wall tube gets lower. The corrosion of water wall tube gets inhibited and gets better economic benefit.