The non-oxidation type bactericides

namely quaternary ammonium salt and isezolintone

were oringinally used for sterilization and algae extermination of circulation water in Guohua Panshan Power Plant

their effectiveness wasn't good.Through measuring various bacteria existing in the circulating water and in sludge of the circulating water system

a sterilization test has been carried out with clear aim based on the bacterial sorts determined

agents for effective sterilization and algae extermination of the circulating water system as well as the dosage and dosing mode of said agents being screened out.On the basis of test results in the laboratory and in the field

a scheme for sterilization and algae extermination has been determined as follows:taking the oxidation type bactericide

i.e.clorine ingot

as the main bactericide for sterilization in the water body

the non-oxidation type bactericide and isezolintone

is periodically dosed with impulse mode

to enhance the function of sterilization and algae extermination.Tests in the field show that the new scheme has remarkable effectiveness

and decreasing the expenditure for bactericide by a big margin.