CN204298144U - A kind of weir, rearmounted denitrogenation biological filter arc top - Google Patents
A kind of weir, rearmounted denitrogenation biological filter arc top Download PDFInfo
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- CN204298144U CN204298144U CN201420800989.XU CN201420800989U CN204298144U CN 204298144 U CN204298144 U CN 204298144U CN 201420800989 U CN201420800989 U CN 201420800989U CN 204298144 U CN204298144 U CN 204298144U
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- weir
- water distribution
- arc
- arc top
- biological filter
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Abstract
The utility model relates to weir, a kind of rearmounted denitrogenation biological filter arc top, and on top, both sides, filter tank, specular is shaped with water distribution weir, is fixed with weir plate, it is characterized in that at the outer rim position on water distribution weir: the weir plate be fixedly mounted with at outer rim position, water distribution weir is arc weir plate.And, arc top weir plate is shaped with longitudinal water conservancy diversion cambered surface.The utility model has taken into full account that conventional rearmounted denitrogenation biological filter water distribution drop is turbulent condition and the problem larger with air contact surfaces, water distribution weir, arc top is adopted to substitute conventional water distribution weir, vertical right angle, by the water distribution weir of specific arc, the effect of refluence can be played to water distribution, avoid occurring turbulent flow, and make water distribution along the flowing of effluent trough outer wall, reduce the area contacted with air.
Description
Technical field
The utility model belongs to sewage treatment area, relates to the rearmounted denitrogenation biological filter of town sewage advanced treating and nitrogenous Industrial Wastewater Treatment, weir, especially a kind of rearmounted denitrogenation biological filter arc top.
Background technology
At present, rearmounted denitrogenation biological filter flat shape is rectangle, for ensureing water inlet even water distribution, the mode of usual employing water distribution weir water distribution, due to the liquid level backwash in filter tank or be always in low level after driving nitrogen, the drop of irrigation channel crest of weir is highly comparatively large, carries out oxygenation make to increase into water dissolved oxygen concentration due to drop to water inlet, average energy increases by 3 ~ 5mg/L, and the existence of dissolved oxygen have impact on denitrifying generation and speed.By measuring and calculating, if adopt methyl alcohol as carbon source, ton water running expense then needs increase by 0.01 yuan/ton; If adopt sodium acetate as carbon source, need increase by 0.03 yuan/ton.Therefore water distribution weir is reduced to water body oxygenation, most important for saving operating cost.
By retrieval, not yet find the patent document identical with present patent application.
Summary of the invention
The purpose of this utility model is to solve the problems of the technologies described above, and proposes weir, a kind of rearmounted denitrogenation biological filter arc top, adopts weir, arc top can solve the problem of the oxygen dissolved increase that drop causes.
The purpose of this utility model is achieved by the following technical solution:
A kind of weir, rearmounted denitrogenation biological filter arc top, on top, both sides, filter tank, specular is shaped with water distribution weir, is fixed with weir plate, it is characterized in that at the outer rim position on water distribution weir: the weir plate be fixedly mounted with at outer rim position, water distribution weir is arc weir plate.
And, arc top weir plate is shaped with longitudinal water conservancy diversion cambered surface.
And the length of described arc weir plate extend into below waterline.
Advantage of the present utility model and good effect are:
The utility model has taken into full account that conventional rearmounted denitrogenation biological filter water distribution drop is turbulent condition and the problem larger with air contact surfaces, water distribution weir, arc top is adopted to substitute conventional water distribution weir, vertical right angle, by the water distribution weir of specific arc, the effect of refluence can be played to water distribution, avoid occurring turbulent flow, and make water distribution along the flowing of effluent trough outer wall, reduce the area contacted with air.
Accompanying drawing explanation
Fig. 1 is cross section schematic diagram of the present utility model;
Fig. 2 is the front enlarged diagram of the arc top weir plate of Fig. 1.
Detailed description of the invention:
Below by specific embodiment, the utility model is described in further detail, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of weir, rearmounted denitrogenation biological filter arc top, by filter tank 1 and interior bottom-up install successively counter-flushing pipeline 7, brick 6, gravel 5 and filtrate 4 at the bottom of filter tank, on top, both sides, filter tank, specular is shaped with water distribution weir 2, the top of this water distribution weir water level in filter tank, is fixed with weir plate 3 at the outer rim position on water distribution weir.
Innovative point of the present utility model is:
The weir plate be fixedly mounted with at outer rim position, water distribution weir is arc weir plate, and the length of this arc weir plate extend into below waterline, can enter in filter tank, see Fig. 1 without dissolved oxygen to make current.
Arc top weir plate is shaped with longitudinal water conservancy diversion cambered surface 8, see Fig. 2.
Prove according to related experiment, this design can reduce by the oxygenation of about three point, greatly saves carbon source dosage, reduces filter tank operating cost.
Claims (3)
1. a weir, rearmounted denitrogenation biological filter arc top, on top, both sides, filter tank, specular is shaped with water distribution weir, is fixed with weir plate, it is characterized in that at the outer rim position on water distribution weir: the weir plate be fixedly mounted with at outer rim position, water distribution weir is arc weir plate.
2. weir, rearmounted denitrogenation biological filter arc top according to claim 1, is characterized in that: on the weir plate of arc top, be shaped with longitudinal water conservancy diversion cambered surface.
3. weir, rearmounted denitrogenation biological filter arc top according to claim 1 and 2, is characterized in that: the length of described arc weir plate extend into below waterline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800989.XU CN204298144U (en) | 2014-12-16 | 2014-12-16 | A kind of weir, rearmounted denitrogenation biological filter arc top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800989.XU CN204298144U (en) | 2014-12-16 | 2014-12-16 | A kind of weir, rearmounted denitrogenation biological filter arc top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204298144U true CN204298144U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420800989.XU Active CN204298144U (en) | 2014-12-16 | 2014-12-16 | A kind of weir, rearmounted denitrogenation biological filter arc top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204298144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796076A (en) * | 2019-01-16 | 2019-05-24 | 中持水务股份有限公司 | The adjustable weir plate of arc for deep-bed filter |
-
2014
- 2014-12-16 CN CN201420800989.XU patent/CN204298144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796076A (en) * | 2019-01-16 | 2019-05-24 | 中持水务股份有限公司 | The adjustable weir plate of arc for deep-bed filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |