DIRT WASHING METHOD FOR WATER SYSTEM

PROBLEM TO BE SOLVED: To provide a dirt washing system easy to apply and high in effect while avoiding the installation of a large-scale apparatus, foaming and increase in wastewater load caused by a surfactant, and deterioration of a working environment caused by hydrazine and high-concentration hy...

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Hauptverfasser:	ONISHI NORIHIKO, UCHIDA YURIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING CLEANING IN GENERAL CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DETERGENT COMPOSITIONS DETERGENTS DIFFUSION TREATMENT OF METALLIC MATERIAL FATTY ACIDS THEREFROM INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING TRANSPORTING USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a dirt washing system easy to apply and high in effect while avoiding the installation of a large-scale apparatus, foaming and increase in wastewater load caused by a surfactant, and deterioration of a working environment caused by hydrazine and high-concentration hydrogen peroxide, in a method for washing, during the operation of a water system, mainly soft dirt deposited on a piping part and a heat exchanger in the water system installed in various factories and buildings.SOLUTION: A dirt washing method for a water system includes adding hydrogen peroxide into water-system water in which metal ions generating colloid in water of pH 6.0-9.5 is present, and then adding a hydrogen peroxide degrading enzyme.