Process and equipment for treating ammonium containing liquid
AssigneeHitachi Plant Engineering & Construction Co., Ltd.
InventorsTatsuo Sumino, Kazuichi Isaka
Life of this patent
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Abstract
The process for treating an ammonium containing liquid by denitrification treatment of an ammonium containing liquid containing at least ammonium comprises carrying out nitrate reduction treatment of reducing nitrate contained in or added to the ammonium containing liquid to nitrite, and carrying out anaerobic ammonium oxidation treatment of simultaneously anaerobically denitrifying nitrite produced in the nitrate reduction treatment and ammonium contained in the ammonium containing liquid by anaerobic ammonium oxidizing bacteria.
Claims12
Equipment for treating an ammonium containing liquid by denitrification treatment of an ammonium containing liquid containing at least ammonium, the equipment comprising:
- a nitrate reduction tank carried out nitrate reduction treatment of reducing nitrate to nitrite, wherein the nitrate is contained in or added to the ammonium containing liquid, and
- an anaerobic ammonium oxidation tank carried out an anaerobic ammonium oxidation treatment of simultaneously anaerobically denitrifying nitrite and ammonium, wherein the nitrate is produced in the nitrate reduction treatment and the ammonium is contained in the ammonium containing liquid.
Dependencies are inferred from the claim text.