First, the use and performance of Zibo Environmental Technology Limited starfish research and production complex biocide HX-801 for industrial circulating cooling water system sterilization and sludge remover overcome isothiazolin-ketone, fungicides do not stick stripping effect of mud and slime 1227 despite stripping bactericidal effect but does not last long, but there is no lack of antibacterial effect, so that sterilization peeling slime and efficient integration of the two effects. Environmental Science and Technology Co., Ltd., Zibo starfish production of composite developed biocide HX-801 can kill and inhibit a variety of common microorganisms in industrial water systems, mold and algae, efficient, low toxicity, and has good peel effect. Long-lasting effect, in the water for a long stability, the long duration of efficacy. Applicable to a wide range of PH, PH5 ~ 9 using the results are not affected. Second, the quality index Item Index Appearance colorless, yellowish or greenish liquid PH (dope) ≥ 2.0 Active content% ≥ 20 Density (20 ℃) ??g/cm3 ≥ 1.01 Third, the use of composite biocide by intermittent dosing, typically half or 1 month dosing concentration of 100-250mg / L.