JPS5445964A - Biolobical denitrification method for organic waste water - Google Patents
Biolobical denitrification method for organic waste waterInfo
- Publication number
- JPS5445964A JPS5445964A JP11194677A JP11194677A JPS5445964A JP S5445964 A JPS5445964 A JP S5445964A JP 11194677 A JP11194677 A JP 11194677A JP 11194677 A JP11194677 A JP 11194677A JP S5445964 A JPS5445964 A JP S5445964A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- tank
- nitration
- waste water
- denitrification
- 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
Links
- 238000000034 method Methods 0.000 title abstract 4
- 239000010815 organic waste Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 abstract 9
- 238000006396 nitration reaction Methods 0.000 abstract 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- 238000004064 recycling Methods 0.000 abstract 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 230000014759 maintenance of location Effects 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: To save the amount of hydrogen doners used by adding a part of liquid from a first denitrification process to a recycling nitration liquid and a netration liquid flowing into a second denitrification process in a nitration recycling system biological denitrification process.
CONSTITUTION: An organic waste water 1 containing NH4-N, such as urea, is allowed to flow into a first denitrification tank 2 under an anaerobic atmosphere. A nitration liquid 4 discharged from a nitration tank 3 under an aerobic atmosphere is recycled to the tank 2 at a flow rate usually 4-7 times that of the waste water. A part of the liquid from the tank 2 is added to the course of the recycling circuit. On the other hand, the rest 7 of the nitration liquid is mixed with a part of the liquid 5 at a retention tank 9 and then allowed to flow into a second denitrification tank 8. With such an arrangement, the concentration of oxygen dissolved in the liquid from retention tank 6 and 9 approximates zero before the inflow of the liquid respectevely to the tanks 2 and 8, thus preventing the consumption of hydrogen doner (e.g. methanol) due to the presence of oxygen
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11194677A JPS5949076B2 (en) | 1977-09-17 | 1977-09-17 | Biological denitrification method for organic wastewater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11194677A JPS5949076B2 (en) | 1977-09-17 | 1977-09-17 | Biological denitrification method for organic wastewater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5445964A true JPS5445964A (en) | 1979-04-11 |
JPS5949076B2 JPS5949076B2 (en) | 1984-11-30 |
Family
ID=14574102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11194677A Expired JPS5949076B2 (en) | 1977-09-17 | 1977-09-17 | Biological denitrification method for organic wastewater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5949076B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60251998A (en) * | 1984-05-28 | 1985-12-12 | Shimizu Constr Co Ltd | Treatment of nitrogen-containing waste water |
-
1977
- 1977-09-17 JP JP11194677A patent/JPS5949076B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60251998A (en) * | 1984-05-28 | 1985-12-12 | Shimizu Constr Co Ltd | Treatment of nitrogen-containing waste water |
JPH0423598B2 (en) * | 1984-05-28 | 1992-04-22 | Shimizu Construction Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS5949076B2 (en) | 1984-11-30 |
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