JPS57180486A - High degree treatment for activated sludge of waste water - Google Patents

High degree treatment for activated sludge of waste water

Info

Publication number
JPS57180486A
JPS57180486A JP56066382A JP6638281A JPS57180486A JP S57180486 A JPS57180486 A JP S57180486A JP 56066382 A JP56066382 A JP 56066382A JP 6638281 A JP6638281 A JP 6638281A JP S57180486 A JPS57180486 A JP S57180486A
Authority
JP
Japan
Prior art keywords
activated sludge
tank
liquid
packed
treatment
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
JP56066382A
Other languages
Japanese (ja)
Inventor
Sadaoki Kaneda
Tadahiko Asano
Masatsune Okuma
Sakae Katayama
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.)
Katayama Chemical Inc
Original Assignee
Katayama Chemical Inc
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 Katayama Chemical Inc filed Critical Katayama Chemical Inc
Priority to JP56066382A priority Critical patent/JPS57180486A/en
Publication of JPS57180486A publication Critical patent/JPS57180486A/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

  • Activated Sludge Processes (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To perform high degree treatment of treated water and effective utilization of phosphorus components in combination by removing and recovering the phosphate ions left in the treated water by activated sludge, and reusing these as nourishing sources for the activated sludge treatment.
CONSTITUTION: The mixed liquids subjected to a sludge treatment in an aeration tank 2 are shifted into a settling tank 3, and the treated liquid separated from activated sludge is supplied to a mixing tank 4. Here, a Ca ion-contg. neutral salt soln. 5 is added thereto, and the liquid is supplied to a packed tower 6 packed with fine granular MgO or Mg(OH)2. Thereby, the phosphate ions left in the treated liquid are removed by about ≥90%, and are discharged to the outside of the system. At a proper point of time, the operation is suspended temporarily, and a dilute aq. inorg. acid soln. is flowed down in the tower 6 from an acid storage tank 7, whereby the insoluble phosphates in the packed beds are dissolved away and are stored in a storage tank 8. The dissolved liquid is controlled to 6W8 pH, after which it is added to the waste water in a control tank 1 so as to be reused as nourishing sources for activated sludge.
COPYRIGHT: (C)1982,JPO&Japio
JP56066382A 1981-04-30 1981-04-30 High degree treatment for activated sludge of waste water Pending JPS57180486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56066382A JPS57180486A (en) 1981-04-30 1981-04-30 High degree treatment for activated sludge of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066382A JPS57180486A (en) 1981-04-30 1981-04-30 High degree treatment for activated sludge of waste water

Publications (1)

Publication Number Publication Date
JPS57180486A true JPS57180486A (en) 1982-11-06

Family

ID=13314216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56066382A Pending JPS57180486A (en) 1981-04-30 1981-04-30 High degree treatment for activated sludge of waste water

Country Status (1)

Country Link
JP (1) JPS57180486A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692732A (en) * 1986-05-30 1987-09-08 The United States Of America As Represented By The Secretary Of The Army Remanence varying in a leakage free permanent magnet field source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692732A (en) * 1986-05-30 1987-09-08 The United States Of America As Represented By The Secretary Of The Army Remanence varying in a leakage free permanent magnet field source

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