JPS5613093A - Biological nitrifying denitrification apparatus - Google Patents
Biological nitrifying denitrification apparatusInfo
- Publication number
- JPS5613093A JPS5613093A JP8707279A JP8707279A JPS5613093A JP S5613093 A JPS5613093 A JP S5613093A JP 8707279 A JP8707279 A JP 8707279A JP 8707279 A JP8707279 A JP 8707279A JP S5613093 A JPS5613093 A JP S5613093A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- nitrifying
- tank
- supplied
- nox
- 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
Links
- 230000001546 nitrifying effect Effects 0.000 title abstract 7
- 239000007788 liquid Substances 0.000 abstract 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 241000894006 Bacteria Species 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
Abstract
PURPOSE: To improve denitrification efficiency without increasing circulating pump power by feeding air to the liquid downward countercurrent part of a deep-well- shaped nitrifying part and opening the discharge end of the ciculating line communicating an NOx reducing part and the liquid downward countercurrent part of the nitrifying part above the liquid surface.
CONSTITUTION: Feed water is supplied from an inflow pipe 14 to the inflow part of a denitrification tank 1. The NOx-N in the nitrifying liquid flowing in from a nitrifying tank 2 is reduced to an N2 gas and is thereby denitrified. During this time, the BOD components in the feed water is utilized as a hydrogen donator of denitrification bacteria. The denitrified liquid is transferred from a circulating pump 8 into the nitrifying tank 2 and the air supplied from a supply pipe 12 is supplied to the region where virtually no water pressure is applied in the upper part of a liquid downward countercurrent part 5. The discharge liquid of the pump 8 contains air bubbles and flows downward, then ascends in a liquid upward countercurrent part 6, reaches the upper part of the tank 2, and is sent from an outflow part 13 to a solid-liquid separating process, but the greater portion of the nitrifying liquid is circulated to the tank 1 via a communicating path 3, thus it is continuously and efficiently NOx-reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8707279A JPS5613093A (en) | 1979-07-10 | 1979-07-10 | Biological nitrifying denitrification apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8707279A JPS5613093A (en) | 1979-07-10 | 1979-07-10 | Biological nitrifying denitrification apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5613093A true JPS5613093A (en) | 1981-02-07 |
Family
ID=13904731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8707279A Pending JPS5613093A (en) | 1979-07-10 | 1979-07-10 | Biological nitrifying denitrification apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5613093A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009173256A (en) * | 2007-10-25 | 2009-08-06 | Kunio Otaki | Auxiliary implement |
-
1979
- 1979-07-10 JP JP8707279A patent/JPS5613093A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009173256A (en) * | 2007-10-25 | 2009-08-06 | Kunio Otaki | Auxiliary implement |
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