JPS55102498A - Treatment of waste water - Google Patents

Treatment of waste water

Info

Publication number
JPS55102498A
JPS55102498A JP994779A JP994779A JPS55102498A JP S55102498 A JPS55102498 A JP S55102498A JP 994779 A JP994779 A JP 994779A JP 994779 A JP994779 A JP 994779A JP S55102498 A JPS55102498 A JP S55102498A
Authority
JP
Japan
Prior art keywords
waste water
nitrification
tank
nitrogen
oxidative decomposition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP994779A
Other languages
Japanese (ja)
Inventor
Kenichi Hikita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP994779A priority Critical patent/JPS55102498A/en
Publication of JPS55102498A publication Critical patent/JPS55102498A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To remove effectively NH3 nitrogen from waste water by regulating pH value in the nitrification process by using an aqueous alkali solution treated with a CO2-containing gas produced in oxidative decomposition or/and denitrification process in the oxidative decomposition, nitrification, and denitrification processes for organics present in waste water.
CONSTITUTION: Waste water containing NH3 nitrogen together with organics is charged into the pretreatment tank 1 to remove coarse impurities and then sent to the sedimentation tank 2 to remove organic flocs. Then, the waste water thus pretreated is introduced into the oxidative decomposition tank 3 to decompose organics present by oxidizing bacteria under an aerobic condition in order to lower BOD value, and then sent to the nitrification tank 4 to convert NH3 nitrogen into nitric acid nitrogen by nitrification using nitrifying bacteria under aerating condition. Then, the nitrified waste water is sent to the denitrification tank 6 to reduce the nitric acid nitrogen to N2 gas by denitrifying bacteria under an anaerobic condition. On the other hand, a CO2-containing gas produced in the oxidative decomposition or/and denitrification process is brought into contact with an aqueous alkali solution and then the liquid thus treated is used for regulating pH in the nitrification process, thus permitting the growth of nitrifying bacteria to increase and also its activity to maintain.
COPYRIGHT: (C)1980,JPO&Japio
JP994779A 1979-01-30 1979-01-30 Treatment of waste water Pending JPS55102498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP994779A JPS55102498A (en) 1979-01-30 1979-01-30 Treatment of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP994779A JPS55102498A (en) 1979-01-30 1979-01-30 Treatment of waste water

Publications (1)

Publication Number Publication Date
JPS55102498A true JPS55102498A (en) 1980-08-05

Family

ID=11734172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP994779A Pending JPS55102498A (en) 1979-01-30 1979-01-30 Treatment of waste water

Country Status (1)

Country Link
JP (1) JPS55102498A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189099A (en) * 1982-04-30 1983-11-04 Kyowa Hakko Kogyo Co Ltd Treatment of liquid waste
KR100315874B1 (en) * 1999-07-30 2001-12-13 채문식 Method and Apparatus of Biological Nitrogen Removal from the High Concentration Industrial Wastewater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189099A (en) * 1982-04-30 1983-11-04 Kyowa Hakko Kogyo Co Ltd Treatment of liquid waste
KR100315874B1 (en) * 1999-07-30 2001-12-13 채문식 Method and Apparatus of Biological Nitrogen Removal from the High Concentration Industrial Wastewater

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