JPS5656293A - Treatment of organic waste water and equipment therefor - Google Patents

Treatment of organic waste water and equipment therefor

Info

Publication number
JPS5656293A
JPS5656293A JP13152079A JP13152079A JPS5656293A JP S5656293 A JPS5656293 A JP S5656293A JP 13152079 A JP13152079 A JP 13152079A JP 13152079 A JP13152079 A JP 13152079A JP S5656293 A JPS5656293 A JP S5656293A
Authority
JP
Japan
Prior art keywords
waste water
stage
water
treating
treating tank
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
JP13152079A
Other languages
Japanese (ja)
Inventor
Shigehisa Iwai
Matafumi Ishibashi
Tomonari Kakishita
Yonekazu Sakamoto
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.)
Unitika Ltd
Original Assignee
Unitika 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 Unitika Ltd filed Critical Unitika Ltd
Priority to JP13152079A priority Critical patent/JPS5656293A/en
Publication of JPS5656293A publication Critical patent/JPS5656293A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2806—Anaerobic processes using solid supports for microorganisms

Abstract

PURPOSE:To simultaneously remove organic substance and nitrogen component from the waste water in the process of organic waste water treatment by a method wherein an adjustment is made on the amount of dissolved oxygen in the treating water in the first stage treating tank, and the treated water is returned from the downstream to the first stage. CONSTITUTION:The organic waste water is biologically treated in the treating tanks 8-12 in a submerged type fixed formation filter bed. In this process, the dissolved oxygen concentration in the treating water in the first stage treating tank 8 is controlled low, 0.2-2mg/l. In the second stage treating tank 9, the state of nitrogen is converted from ammonia to nitric acid. Such treated water is returned to the first stage treating tank 8 in the amount of 0.5-5 times that of the raw waste water supplied. This causes the first stage treating tank 8 to perform oxidation-decomposition of BOD component in the waste water. At the same time, the returned water from the second stage 9 is subject to denitrification from an organic carbon source in the raw waste water 7.
JP13152079A 1979-10-11 1979-10-11 Treatment of organic waste water and equipment therefor Pending JPS5656293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13152079A JPS5656293A (en) 1979-10-11 1979-10-11 Treatment of organic waste water and equipment therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13152079A JPS5656293A (en) 1979-10-11 1979-10-11 Treatment of organic waste water and equipment therefor

Publications (1)

Publication Number Publication Date
JPS5656293A true JPS5656293A (en) 1981-05-18

Family

ID=15059966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13152079A Pending JPS5656293A (en) 1979-10-11 1979-10-11 Treatment of organic waste water and equipment therefor

Country Status (1)

Country Link
JP (1) JPS5656293A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216783A (en) * 1982-06-09 1983-12-16 Kayaba Ind Co Ltd Contact aeration device which recycles treated water
JPS6051597A (en) * 1983-08-31 1985-03-23 Takuo Mochizuki Sewage treating method
JP2010046572A (en) * 2008-08-19 2010-03-04 Kurita Water Ind Ltd Method and apparatus for biologically treating organic matter-containing water
CN103553216A (en) * 2013-10-17 2014-02-05 浙江大学宁波理工学院 Two-point water intake biofilter and method for inhibiting generation of dissolved organic nitrogen by using same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216783A (en) * 1982-06-09 1983-12-16 Kayaba Ind Co Ltd Contact aeration device which recycles treated water
JPS6051597A (en) * 1983-08-31 1985-03-23 Takuo Mochizuki Sewage treating method
JP2010046572A (en) * 2008-08-19 2010-03-04 Kurita Water Ind Ltd Method and apparatus for biologically treating organic matter-containing water
CN103553216A (en) * 2013-10-17 2014-02-05 浙江大学宁波理工学院 Two-point water intake biofilter and method for inhibiting generation of dissolved organic nitrogen by using same

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