To provide a composition for cleaning petroleum pollutant to separate and clean oil and sludge as the petroleum pollutant occurring from crude oil tanks or oil refining facilities; and to provide a cleaning method using this.
A cleaning method of a petroleum pollutant comprises: a step of mixing and ripening a cleaning composition by mixing purified water, cheonggukjang powder and a surfactant and ripening the mixture; a pollutant separation step of mixing the cleaning composition mixed and ripened in the step of mixing and ripening the cleaning composition with cleaning circulation water heated at 35-45°C temperature, and charging this into an apparatus where petroleum pollutant remains to be circulated; and after going through the pollutant separation step, an aeration and oxidation step of circulating the cleaning circulation water while raising to 100-110°C temperature, separating combustible gas in the apparatus, and oxidizing harmful gas and pollutants.
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Kazuhiro Yamaguchi
Masakazu Noda
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