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Title:
WASTEWATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2022/080399
Kind Code:
A1
Abstract:
The present invention significantly reduces the ammonium ion concentration and COD of wastewater, while reducing the amount of an oxidizing gas to be used. The present invention relates to a method for treating wastewater containing ammonia nitrogen, the method comprising: a first step in which at least some of the ammonium nitrogen is discharged from the wastewater; and a second step in which first treated wastewater, which is the wastewater that has undergone the first step, is subjected to a wet-process oxidization treatment.

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Inventors:
SODEYAMA KYOSUKE (JP)
YOSHINO HAJIME (JP)
YAMAUCHI SHINGO (JP)
MIKAMI YUSUKE (JP)
Application Number:
PCT/JP2021/037845
Publication Date:
April 21, 2022
Filing Date:
October 13, 2021
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C02F1/20; B01J23/46; C02F1/74
Foreign References:
JPH1066985A1998-03-10
JP2015085315A2015-05-07
JPS59115745A1984-07-04
JPH091165A1997-01-07
CN107866219A2018-04-03
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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