WATER TREATING METHOD AND WATER TREATING APPARATUS

PROBLEM TO BE SOLVED: To provide a water treating method by which installation of a softening apparatus and an oxidation apparatus are dispensed with or the softening apparatus can be miniaturized and production amount of sludge can be reduced in treatment of raw water containing fluorine and ammoni...

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Bibliographic Details
Main Authors TERAJIMA YUUTAI, HASEBE YOSHIAKI, EGUCHI MASAHIRO
Format Patent
LanguageEnglish
Published 16.10.2008
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PROBLEM TO BE SOLVED: To provide a water treating method by which installation of a softening apparatus and an oxidation apparatus are dispensed with or the softening apparatus can be miniaturized and production amount of sludge can be reduced in treatment of raw water containing fluorine and ammonia nitrogen. SOLUTION: The water treating method comprises a nitrification process of nitrifying at least a part of ammonia nitrogen contained in water to be treated containing fluorine and ammonia nitrogen, a denitrification process of performing denitrification reaction by autotrophic denitrification microorganisms while utilizing ammonia nitrogen as an electron donor and nitrite nitrogen produced by nitrification as an electron acceptor and a fluorine treatment process of treating fluorine after the denitrification reaction. COPYRIGHT: (C)2009,JPO&INPIT
Bibliography:Application Number: JP20070093603