JPS54121564A - Denitrification device of waste water - Google Patents

Denitrification device of waste water

Info

Publication number
JPS54121564A
JPS54121564A JP3021678A JP3021678A JPS54121564A JP S54121564 A JPS54121564 A JP S54121564A JP 3021678 A JP3021678 A JP 3021678A JP 3021678 A JP3021678 A JP 3021678A JP S54121564 A JPS54121564 A JP S54121564A
Authority
JP
Japan
Prior art keywords
tank
water
reduction
activated sludge
disposal
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
JP3021678A
Other languages
Japanese (ja)
Inventor
Koji Ishida
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP3021678A priority Critical patent/JPS54121564A/en
Publication of JPS54121564A publication Critical patent/JPS54121564A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To economically denitrify waste water, by reducing the quantity of chemicals added by installing a flow path for returning reduction disposal water to a pH adjusting tank from a reduction tank and a device for returning the sludge of a separator to the reduction tank, in a denitrification device of waste water.
CONSTITUTION: Raw water containing nitrogen components is weakly alkalized to pH 8W9 at a pH adjusting tank 4, and introduced to an oxidation tank 13, and air containing oxygen gas is dissolved in disposal water at a fall tank 7 and the water is oxidation disposed by activated sludge while circulation fluidizing disposal water, and sludge is coagulated by the bubbling of dissolved gas at a floating tank 8. The water is introduced to a reduction tank 14, oxidized disposal water is reduced by activated sludge under the presence of organic carbon and nitrogen components are gasification removed. Activated sludge is further separated at a separator 16. Reduction disposal water with high alkalinity at the reduction tank and activated sludge at the separator 16 as an organic carbon source at that time are returned and reutilized.
COPYRIGHT: (C)1979,JPO&Japio
JP3021678A 1978-03-14 1978-03-14 Denitrification device of waste water Pending JPS54121564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3021678A JPS54121564A (en) 1978-03-14 1978-03-14 Denitrification device of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3021678A JPS54121564A (en) 1978-03-14 1978-03-14 Denitrification device of waste water

Publications (1)

Publication Number Publication Date
JPS54121564A true JPS54121564A (en) 1979-09-20

Family

ID=12297520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3021678A Pending JPS54121564A (en) 1978-03-14 1978-03-14 Denitrification device of waste water

Country Status (1)

Country Link
JP (1) JPS54121564A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100306206B1 (en) * 1999-06-14 2001-09-24 정명식 Method and equipment for the treatment of wastewater containing nitrate-nitrogen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825372A (en) * 1971-08-11 1973-04-02
JPS50120161A (en) * 1974-03-11 1975-09-20
JPS518754A (en) * 1974-07-11 1976-01-23 Ebara Infilco Jukiseihaisuino seibutsutekidatsuchitsusoho
JPS5163556A (en) * 1974-10-03 1976-06-02 Ici Ltd
JPS51103665A (en) * 1975-03-08 1976-09-13 Nippon Kokan Kk Haisuichuno kokeibutsujokyoto dojinianmoniao sankasuruhoho

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825372A (en) * 1971-08-11 1973-04-02
JPS50120161A (en) * 1974-03-11 1975-09-20
JPS518754A (en) * 1974-07-11 1976-01-23 Ebara Infilco Jukiseihaisuino seibutsutekidatsuchitsusoho
JPS5163556A (en) * 1974-10-03 1976-06-02 Ici Ltd
JPS51103665A (en) * 1975-03-08 1976-09-13 Nippon Kokan Kk Haisuichuno kokeibutsujokyoto dojinianmoniao sankasuruhoho

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100306206B1 (en) * 1999-06-14 2001-09-24 정명식 Method and equipment for the treatment of wastewater containing nitrate-nitrogen

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