JPS54125864A - Method of treating water containing ammoniacal nitrogen - Google Patents

Method of treating water containing ammoniacal nitrogen

Info

Publication number
JPS54125864A
JPS54125864A JP3322778A JP3322778A JPS54125864A JP S54125864 A JPS54125864 A JP S54125864A JP 3322778 A JP3322778 A JP 3322778A JP 3322778 A JP3322778 A JP 3322778A JP S54125864 A JPS54125864 A JP S54125864A
Authority
JP
Japan
Prior art keywords
tank
denitrification
nitration
final
returned
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
JP3322778A
Other languages
Japanese (ja)
Inventor
Arimasa Miyaji
Makoto Iwasaki
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.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries 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 Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP3322778A priority Critical patent/JPS54125864A/en
Publication of JPS54125864A publication Critical patent/JPS54125864A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To sharply reduce the quantities of alkali and methanol used, by introducing one portion of sludge returned to a final denitrification process.
CONSTITUTION: A plurality of tanks are directly connected to a first nitration tank 2a, a first denitrification tank 1a, a second nitration tank 2b and a second denitrification tank 1b alternately, and raw water W is partition injected to denitrification tanks 1a, 1b, 1c except the first nitration tank 2a and a final denitrification tank 3. Sludge is returned to the first nitration tank from a settling tank 4 while one portion is returned to the final denitrification tank 3. NH+ 4 is oxidized to NO- 2 and NO- 3 at the first nitration tank 2a, denitrification is performed by utilizing organic matter in raw water at the first denitrification tank 1a and this operation is successively repeated. Residual NO- 3 is removed at the final denitrification tank 3, to which methanol M is added. Since alkali formed by denitrification reaction can be utilized by the nitration tanks, the quantity of alkali used for neutralization can be reduced. When introducing one portion of sludge returned to a final denitrification process, denitrification speed becomes quick.
COPYRIGHT: (C)1979,JPO&Japio
JP3322778A 1978-03-23 1978-03-23 Method of treating water containing ammoniacal nitrogen Pending JPS54125864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3322778A JPS54125864A (en) 1978-03-23 1978-03-23 Method of treating water containing ammoniacal nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3322778A JPS54125864A (en) 1978-03-23 1978-03-23 Method of treating water containing ammoniacal nitrogen

Publications (1)

Publication Number Publication Date
JPS54125864A true JPS54125864A (en) 1979-09-29

Family

ID=12380561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3322778A Pending JPS54125864A (en) 1978-03-23 1978-03-23 Method of treating water containing ammoniacal nitrogen

Country Status (1)

Country Link
JP (1) JPS54125864A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000279994A (en) * 1999-03-29 2000-10-10 Shinko Pantec Co Ltd Nitrification and denitrification treatment and apparatus therefor
JP2003047989A (en) * 2001-08-06 2003-02-18 Nisshin Steel Co Ltd Denitrification method and apparatus
JP2013039538A (en) * 2011-08-18 2013-02-28 Hitachi Plant Technologies Ltd Wastewater treatment apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113047A (en) * 1974-02-16 1975-09-04
JPS50147157A (en) * 1974-05-17 1975-11-26

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113047A (en) * 1974-02-16 1975-09-04
JPS50147157A (en) * 1974-05-17 1975-11-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000279994A (en) * 1999-03-29 2000-10-10 Shinko Pantec Co Ltd Nitrification and denitrification treatment and apparatus therefor
JP2003047989A (en) * 2001-08-06 2003-02-18 Nisshin Steel Co Ltd Denitrification method and apparatus
JP2013039538A (en) * 2011-08-18 2013-02-28 Hitachi Plant Technologies Ltd Wastewater treatment apparatus

Similar Documents

Publication Publication Date Title
KR850005378A (en) Active sludge
JPS54125864A (en) Method of treating water containing ammoniacal nitrogen
JPS5212767A (en) Method for continuous removal of sludge in chemical treating liquor
JPS5222356A (en) Digesting process of contaminated organic liquid and equipment therefo r
JPS5442850A (en) Method of treating raw sewage
JPS5212762A (en) Method of treating waste water
JPS5212761A (en) Method of treating waste water
JPS54121560A (en) Method of disposal for urinary sewage
JPS56118789A (en) Sewage disposer
JPS54133755A (en) Method of process for waste water
JPS5228167A (en) Nitrification process of ammoniac nitrogen in waste water
JPS5241453A (en) Method for treating sewage containing organic substances of soluble ty pe
JPS5342451A (en) Process for purifying organic waste water
JPS55147197A (en) Treating method for sewage
JPS5561998A (en) Treatment method for flue gas desulfurization and denitrification waste water
JPS5268755A (en) Process for biological treatment of denitrification
JPS53130860A (en) Method of completely removing nitrogen contained in waste water
JPS5419551A (en) Biological denitrification method for treating urinary filthy water
JPS55152598A (en) Method for removal of nitrogen compound from sewage
JPS5345049A (en) Method of treating organic waste water
JPS5381494A (en) Activated carbon treating method
GODDARD CONTACT STABILISATION--A PROCESS WITH A FUTURE
CUENCA PRELIMINARY STUDY OF EXPERIMENTAL SYSTEM FOR AMMONIA REMOVAL AT SOUTH LAKE TAHOE ADVANCED WASTEWATER TREATMENT PLANT
JPS5695396A (en) Treatment of organic waste water
JPS55116493A (en) Biological nitration and denitrification method