JPS5419552A - Biological denitrifying method for treating filthy water - Google Patents

Biological denitrifying method for treating filthy water

Info

Publication number
JPS5419552A
JPS5419552A JP8422077A JP8422077A JPS5419552A JP S5419552 A JPS5419552 A JP S5419552A JP 8422077 A JP8422077 A JP 8422077A JP 8422077 A JP8422077 A JP 8422077A JP S5419552 A JPS5419552 A JP S5419552A
Authority
JP
Japan
Prior art keywords
treating
filthy water
tank
denitrifying method
biological
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
JP8422077A
Other languages
Japanese (ja)
Inventor
Teiji Inoue
Katsumasa Yamaguchi
Tsutomu Matsuzawa
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.)
HACHIYA KOGYO KK
Proterial Ltd
Original Assignee
HACHIYA KOGYO KK
Hitachi Metals 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 HACHIYA KOGYO KK, Hitachi Metals Ltd filed Critical HACHIYA KOGYO KK
Priority to JP8422077A priority Critical patent/JPS5419552A/en
Publication of JPS5419552A publication Critical patent/JPS5419552A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To provide a biological denitrifying method for treating filthy water, according to which a pre-settling tank is provided between a biological denitrification tank and a settling tank, and sludge floated in the pre-setting tank is returned to a nitrification tank whereby a large amount of floated sludge can be separated effectively.
COPYRIGHT: (C)1979,JPO&Japio
JP8422077A 1977-07-15 1977-07-15 Biological denitrifying method for treating filthy water Pending JPS5419552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8422077A JPS5419552A (en) 1977-07-15 1977-07-15 Biological denitrifying method for treating filthy water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8422077A JPS5419552A (en) 1977-07-15 1977-07-15 Biological denitrifying method for treating filthy water

Publications (1)

Publication Number Publication Date
JPS5419552A true JPS5419552A (en) 1979-02-14

Family

ID=13824390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8422077A Pending JPS5419552A (en) 1977-07-15 1977-07-15 Biological denitrifying method for treating filthy water

Country Status (1)

Country Link
JP (1) JPS5419552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177395A (en) * 1981-04-24 1982-11-01 Kubota Ltd Purification of water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177395A (en) * 1981-04-24 1982-11-01 Kubota Ltd Purification of water

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