JPS5684696A - Two-stage type sewage treatment apparatus - Google Patents

Two-stage type sewage treatment apparatus

Info

Publication number
JPS5684696A
JPS5684696A JP16049679A JP16049679A JPS5684696A JP S5684696 A JPS5684696 A JP S5684696A JP 16049679 A JP16049679 A JP 16049679A JP 16049679 A JP16049679 A JP 16049679A JP S5684696 A JPS5684696 A JP S5684696A
Authority
JP
Japan
Prior art keywords
tank
liquid
returned
nitrating
secondary 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.)
Granted
Application number
JP16049679A
Other languages
Japanese (ja)
Other versions
JPS6327080B2 (en
Inventor
Hiroyuki Tomomatsu
Toshio Ono
Yasuo Ido
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.)
Nippon Sharyo Ltd
Original Assignee
Nippon Sharyo 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 Nippon Sharyo Ltd filed Critical Nippon Sharyo Ltd
Priority to JP16049679A priority Critical patent/JPS5684696A/en
Publication of JPS5684696A publication Critical patent/JPS5684696A/en
Publication of JPS6327080B2 publication Critical patent/JPS6327080B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain a good water quality standard stably and economically by carrying out denitrification reaction and BOD removal reaction by making use of crude night soil of high concn. without diluting the same, and carrying out finishing treatment by the secondary treatment of the desorbed liquid in the stage of secondary treatment.
CONSTITUTION: The crude night soil charged into an anerobic digesting tank is aerated and the sludge contained in the treated liquid is settled in a settling tank 2 and is returned by a pump to make the reaction more efficient. Part of the treated liquid 4 from the digesting tank 1 is returned to the charge side. Thence, the desorbed liquid 12 having been removed of the sludge is charged into the nitrating tank 5 of a secondary treatment apparatus II and is mixed with the dilute water supplied together with these from the outside of the system by a channel 10. The liquid treated in the nitrating tank 5 is sent to a final settling tank 8 through a denitrifying tank 6 and a reaerating tank 7. Part of the sludge formed here is returned to the nitrating tank and is released 43.
COPYRIGHT: (C)1981,JPO&Japio
JP16049679A 1979-12-11 1979-12-11 Two-stage type sewage treatment apparatus Granted JPS5684696A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16049679A JPS5684696A (en) 1979-12-11 1979-12-11 Two-stage type sewage treatment apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16049679A JPS5684696A (en) 1979-12-11 1979-12-11 Two-stage type sewage treatment apparatus

Publications (2)

Publication Number Publication Date
JPS5684696A true JPS5684696A (en) 1981-07-10
JPS6327080B2 JPS6327080B2 (en) 1988-06-01

Family

ID=15716185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16049679A Granted JPS5684696A (en) 1979-12-11 1979-12-11 Two-stage type sewage treatment apparatus

Country Status (1)

Country Link
JP (1) JPS5684696A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120161A (en) * 1974-03-11 1975-09-20
JPS5442850A (en) * 1977-09-10 1979-04-05 Kubota Ltd Method of treating raw sewage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120161A (en) * 1974-03-11 1975-09-20
JPS5442850A (en) * 1977-09-10 1979-04-05 Kubota Ltd Method of treating raw sewage

Also Published As

Publication number Publication date
JPS6327080B2 (en) 1988-06-01

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