GERMICIDE FOR FILAMENTOUS BACTERIUM AND DISSOLUTION OF BULKING OF ACTIVATED SLUDGE

• Main Authors: SEO YASUSHI, MARUOKA TOSHIHARU, HIROTA KENJI
• Format: Patent
• Language: English
• Published: 17.09.1992
• Subjects: 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

PURPOSE:To provide the subject germicide for killing filamentous bacteria breaking out in a waste water treatment unit by activated sludge method and to dissolve bulking of the activated sludge. CONSTITUTION:There is provided a germicide containing, as the active component, a cationic reaction product obtained by reacting an imidazole compound with an epihalohydrin and this germicide can kill filamentous bacteria. By adding 0.05-5 pts.wt. cationic reaction product obtained by reacting the imidazole compound with the epihalohydrin to 100 pts.wt. dry solid matter of the activated sludge for dissolution of bulking occurring in a waste water treatment unit by activated sludge method, bulking can be dissolved.