JPS5452859A - Method of denitrifying waste water by use of a flow layer - Google Patents

Method of denitrifying waste water by use of a flow layer

Info

Publication number
JPS5452859A
JPS5452859A JP11864777A JP11864777A JPS5452859A JP S5452859 A JPS5452859 A JP S5452859A JP 11864777 A JP11864777 A JP 11864777A JP 11864777 A JP11864777 A JP 11864777A JP S5452859 A JPS5452859 A JP S5452859A
Authority
JP
Japan
Prior art keywords
flow layer
particles
organisms
pipe
micro
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
JP11864777A
Other languages
Japanese (ja)
Inventor
Yoshinori Yushina
Akinori Kurima
Yasuhiro Iwase
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.)
Chiyoda Chemical Engineering and Construction Co Ltd
Original Assignee
Chiyoda Chemical Engineering and Construction Co 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 Chiyoda Chemical Engineering and Construction Co Ltd filed Critical Chiyoda Chemical Engineering and Construction Co Ltd
Priority to JP11864777A priority Critical patent/JPS5452859A/en
Publication of JPS5452859A publication Critical patent/JPS5452859A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent coagulation of particles by stirring the lower part of a flow layer, to take out, from the upper part of the flow layer active particles together with a part of water under treatment and send them back to the flow layer after micro- organisms are removed from them, and thereby to operate biological denitrification more effectively.
CONSTITUTION: Unprocessed water containing nitorus or nitric compounds is drawn from supply intake 1 into a denitrification reaction tower and is brought into contact on dispersion plate 3 with flow layer 4 consisting of denitrifying-bacteria- attached active particles and is sujected to detrification reaction, and then the water under treatment is discharged from pipe 2. In the lower part of flow layer 4, coagulation of sedimentary particles is prevented by means of a stirrer 5. Active particles to which micro-organisms are attched excessively and which have low specific gravities are taken out together with water under treatment sent from pipe 7 provided in the upper part of the flow layer and are passed through pump 8, and thereby excessive micro-organisms are removed from the particles, and then the water is sent back to the reaction tank from pipe 6
COPYRIGHT: (C)1979,JPO&Japio
JP11864777A 1977-10-04 1977-10-04 Method of denitrifying waste water by use of a flow layer Pending JPS5452859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11864777A JPS5452859A (en) 1977-10-04 1977-10-04 Method of denitrifying waste water by use of a flow layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11864777A JPS5452859A (en) 1977-10-04 1977-10-04 Method of denitrifying waste water by use of a flow layer

Publications (1)

Publication Number Publication Date
JPS5452859A true JPS5452859A (en) 1979-04-25

Family

ID=14741724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11864777A Pending JPS5452859A (en) 1977-10-04 1977-10-04 Method of denitrifying waste water by use of a flow layer

Country Status (1)

Country Link
JP (1) JPS5452859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169091A (en) * 1989-12-15 1993-07-09 Elf Atochem Sa Substrate of biomass for nitration, reactor for performing aerobic nitration of refuse by using said substrate and biological method for it, and method for removing nitrogen compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169091A (en) * 1989-12-15 1993-07-09 Elf Atochem Sa Substrate of biomass for nitration, reactor for performing aerobic nitration of refuse by using said substrate and biological method for it, and method for removing nitrogen compound

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