JPS558877A - Biological denitrification method for waste water - Google Patents
Biological denitrification method for waste waterInfo
- Publication number
- JPS558877A JPS558877A JP8262778A JP8262778A JPS558877A JP S558877 A JPS558877 A JP S558877A JP 8262778 A JP8262778 A JP 8262778A JP 8262778 A JP8262778 A JP 8262778A JP S558877 A JPS558877 A JP S558877A
- Authority
- JP
- Japan
- Prior art keywords
- methanol
- add
- amount
- waste water
- alkaline agent
- 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 8
- 239000002351 wastewater Substances 0.000 title abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 9
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000010802 sludge Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: To prevent the increase in BOD concentration in treated water by automatically controlling the amount of methanol to add to denitrification process according to a signal of the amount of alkali to add in nitrification process.
CONSTITUTION: The waste water 1 is introduced into the nitrification process 3 with the return sludge 2 for the reduction of BOD concentration and also the oxidation of ammoniacal nitrogen and by measuring the pH of the process with the pH meter 10, an alkaline agent is added by operating the alkaline agent automatic injector 11 to keep a set pH value constant. Then, the treated water from the nitrification process is sent to the denitrification process 7 with the return sludge 6 through the sedimentation basin 4, where methanol is added by the methanol automatic injector 12 controllably operating according to a signal of the amount of alkaline agent to add to the nitrification process 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8262778A JPS558877A (en) | 1978-07-06 | 1978-07-06 | Biological denitrification method for waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8262778A JPS558877A (en) | 1978-07-06 | 1978-07-06 | Biological denitrification method for waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS558877A true JPS558877A (en) | 1980-01-22 |
| JPS6218234B2 JPS6218234B2 (en) | 1987-04-22 |
Family
ID=13779675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8262778A Granted JPS558877A (en) | 1978-07-06 | 1978-07-06 | Biological denitrification method for waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946195A (en) * | 1982-09-08 | 1984-03-15 | Hitachi Ltd | Controlling method for biological denitrification process |
-
1978
- 1978-07-06 JP JP8262778A patent/JPS558877A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946195A (en) * | 1982-09-08 | 1984-03-15 | Hitachi Ltd | Controlling method for biological denitrification process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6218234B2 (en) | 1987-04-22 |
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