发明名称 |
Method for treating water containing ammonium-nitrogen |
摘要 |
Raw water containing ammonium-nitrogen is introduced into a nitrification tank and nitrification of nitrite-nitrogen by nitrite oxidizing bacteria is inhibited according to inhibition of the ammonium-nitrogen, thereby conducting stable nitrification of nitrous acid type at a high load by the action of ammonium oxidizing bacteria. Carbonate and/or bicarbonate are added into the nitrification tank 1 . The inorganic carbon concentration in the nitrification tank 1 is maintained at 35 mg-C/L or more. The nitrified liquid thus obtained is introduced into a denitrification tank and denitrification reaction is conducted by the action of denitrifying bacteria with the remaining ammonium-nitrogen as an electron donor and the nitrite-nitrogen as an electron acceptor.
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申请公布号 |
US7438816(B2) |
申请公布日期 |
2008.10.21 |
申请号 |
US20070819522 |
申请日期 |
2007.06.28 |
申请人 |
KURITA WATER INDUSTRIES LTD. |
发明人 |
TOKUTOMI TAKAAKI;ORITA NOBUHIRO;YAMAUCHI HIDEYO |
分类号 |
C02F3/00;C02F3/30;C02F3/34 |
主分类号 |
C02F3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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