EXTERMINATING AGENT FOR FILAMENTOUS MICROORGANISM

PURPOSE:To readily eliminate occurrence of bulking by a filamentous microorganism in a waste water treatment apparatus with hardly any influence on treated water, by adding chlorhexidine hydrochlorice, etc., to the waste water treating apparatus by a small-amount activated sludge method and extermin...

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Bibliographische Detailangaben
Hauptverfasser:	TAKATSU ZENTA, KUBOYAMA MORIO
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT FISHING FORESTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HUMAN NECESSITIES HUNTING METALLURGY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRAPPING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PURPOSE:To readily eliminate occurrence of bulking by a filamentous microorganism in a waste water treatment apparatus with hardly any influence on treated water, by adding chlorhexidine hydrochlorice, etc., to the waste water treating apparatus by a small-amount activated sludge method and exterminating only the filamentous microorganism in activated sludge. CONSTITUTION:A substance selected from chlorhexidine hydrochloride expressed by formula I, chlorhexidine gluconate expressed by formula II and mixtures thereof as an active ingredient is added to a treatment apparatus for noxious waste water by an activated sludge method to prevent or eliminate occurrence of filamentous bulking in the waste water treatment apparatus. The above- mentioned substance is continuously or intermittently added 1-4 times a day preferably in an amount of 0.1-200mg/day expressed in terms of the active ingredient based on 1l air in an aeration tank of the waste water treatment apparatus. The method of use is simple and precipitating property of the used activated sludge can be observed and judged by naked eye. This method can be used under any condition and in any treating apparatus.