CN213652004U - Negative pressure type denitrification biological aerated filter reactor - Google Patents
Negative pressure type denitrification biological aerated filter reactor Download PDFInfo
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- CN213652004U CN213652004U CN202022355400.8U CN202022355400U CN213652004U CN 213652004 U CN213652004 U CN 213652004U CN 202022355400 U CN202022355400 U CN 202022355400U CN 213652004 U CN213652004 U CN 213652004U
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Abstract
The utility model discloses a negative pressure type denitrification aeration biological filter reactor, which comprises a backwashing water inlet pipe, a sewage water inlet pipe, a backwashing air blower, a main reaction tank, a negative pressure fan, a backwashing water outlet pipe, an overflow weir, a gas distribution pipe and a water distribution pipe; during normal operation, valves of the sewage inlet pipe and the sewage outlet pipe are opened, sewage enters the water distribution pipe through the sewage inlet pipe and is discharged from the water outlet pipe through the thick and thin packing layer and the overflow weir, dissolved oxygen in water can be reduced in a negative pressure state, the tank is ensured to be in an anoxic state, and meanwhile, nitrogen generated by denitrification promotes the denitrification effect; when backwashing is needed, the sewage inlet pipe, the water outlet pipe valve and the negative pressure fan are closed, the backwashing water inlet pipe and the backwashing water outlet pipe valve are opened, and the backwashing air blower is started to perform backwashing. The beneficial effects of the utility model are that negative pressure formula denitrification bological aerated filter adopts modularization pressure shell, and the water distribution aeration is unique, and the totally closed operation of little negative pressure, odorless, no foam, environment friendly can effectively improve denitrogenation efficiency.
Description
Technical Field
The utility model relates to the biochemical field, in particular to a negative pressure type denitrification aeration biological filter reactor.
Background
The pollutant that current sewage treatment mainly aimed at is COD, TN, TP, along with the continuous improvement of environmental protection requirement, and each region sewage discharge standard is stricter and stricter day by day, and especially TN's problem is difficult to solve. Aiming at the problem of total nitrogen removal, the advanced treatment technologies commonly adopted by the sewage treatment plants at present are a denitrification aeration biological filter and a denitrification deep bed filter, however, the C/N ratio imbalance exists in the sewage treatment, so that a large amount of carbon sources are frequently required to be additionally supplemented, the current denitrification aeration biological filter and the denitrification deep bed filter are designed in an open mode, the operation stability is poor, and the effect of removing the total nitrogen is unstable. Therefore, a negative pressure type denitrification biological aerated filter reactor is provided to solve the problems.
Disclosure of Invention
Aiming at the prior TN advanced treatment technology, the utility model provides a negative pressure type denitrification aeration biological filter reactor on the basis of practical research, the totally-enclosed negative pressure type reactor ensures the temperature and the anoxic environment of sewage treatment, the negative pressure state timely discharges nitrogen generated by denitrification out of the system, the adding amount of an external carbon source is effectively reduced, and the denitrification treatment effect and stability are improved.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model relates to a negative pressure formula denitrification bological aerated filter reactor, include: the device comprises a backwashing water inlet pipe, a sewage water inlet pipe, a backwashing blower, supporting legs, a main reaction tank, a negative pressure fan, a water outlet pipe, a backwashing water outlet pipe, an overflow weir, a fine packing layer, a coarse packing layer, a packing supporting plate, a gas distribution pipe and a water distribution pipe; is characterized in that: a negative pressure formula denitrification aeration biological filter reactor main part retort be the cylindrical reaction jar that steel constitutes, backwash inlet tube, sewage inlet tube, backwash air-blower are connected with main part retort bottom, the landing leg welds in main part retort bottom, negative pressure fan is connected with main part retort top gas outlet, outlet pipe, backwash outlet pipe are connected with main part retort top, inside overflow weir, thin packing layer, thick packing layer, filler backup pad, gas distribution pipe, the water distribution pipe were arranged in to main part retort.
As a further aspect of the present invention: the main reaction tank is a cylindrical reaction tank made of steel, and the height-diameter ratio is 2: 1-5: 1.
As a further aspect of the present invention: electric butterfly valves are installed on the backwashing water inlet pipe and the sewage inlet pipe, automatic control can be achieved, the backwashing water inlet pipe and the sewage inlet pipe are connected through a tee joint, the back of the backwashing water inlet pipe and the sewage inlet pipe are connected with a main body reaction tank through flanges, and the inside of the main body reaction tank is connected with a water distribution pipe.
As a further aspect of the present invention: the backwashing air blower is connected with the bottom of the main body reaction tank through a pipeline, an electric valve is arranged on the pipeline, automatic control can be realized, and the inside of the main body reaction tank is connected with the air distribution pipe.
As a further aspect of the present invention: the landing leg welds in main part reaction tank bottom, plays the supporting role.
As a further aspect of the present invention: the negative pressure fan is connected with the air outlet hole at the top of the main reaction tank through a pipeline.
As a further aspect of the present invention: electric butterfly valves are installed on the water outlet pipe and the backwashing water outlet pipe, automatic control can be achieved, the water outlet pipe and the backwashing water outlet pipe are connected through a tee joint, the water outlet pipe and the backwashing water outlet pipe are connected through a flange with the main body reaction tank, and the interior of the main body reaction tank is connected with an overflow weir.
As a further aspect of the present invention: the overflow weir, the fine packing layer, the coarse packing layer, the packing support plate, the gas distribution pipe and the water distribution pipe are all arranged in the main reaction tank, and the overflow weir, the fine packing layer, the coarse packing layer, the packing support plate, the gas distribution pipe (13) and the water distribution pipe are arranged from top to bottom in sequence.
As a further aspect of the present invention: the overflow weir is a triangular water collecting weir and surrounds the inner wall of the main reaction tank for a circle.
As a further aspect of the present invention: the total height of the fine filler layer and the coarse filler layer is 1.0-4.0 m, the ratio is 9: 1-7: 1, the particle size of the filter material of the fine filler layer is 1-8mm, and the particle size of the filter material of the coarse filler layer is 8-15 mm.
As a further aspect of the present invention: and a filler supporting plate is arranged below the fine filler layer and the coarse filler layer.
As a further aspect of the present invention: the air distribution pipes and the water distribution pipes are arranged below the filler supporting plate, the air distribution pipes and the water distribution pipes are arranged in a staggered mode, a plurality of microporous aeration heads are arranged on each air distribution pipe at equal intervals, and water distribution holes are formed in the water distribution pipes at equal intervals.
As a further aspect of the present invention: when the reactor normally operates, the electric valves on the backwashing water inlet pipe, the backwashing air blower and the backwashing water outlet pipe are closed, the electric valves on the sewage water inlet pipe and the water outlet pipe are opened, and the negative pressure fan is started to keep the negative pressure state of 1000-4000Pa in the reaction tank; when the reactor is backwashed, the electric valves on the backwash water inlet pipe, the backwash air blower and the backwash water outlet pipe are opened, the backwash air blower is started, the electric valves on the sewage water inlet pipe and the water outlet pipe are closed, and the negative pressure air blower stops.
Drawings
FIG. 1 is a negative pressure type denitrification biological aerated filter reactor.
FIG. 2 is a water distribution aeration pipe arrangement mode at the bottom of a negative pressure type denitrification aeration biological filter reactor.
FIG. 3 is a bottom aeration pipe arrangement mode of a negative pressure type denitrification biological aerated filter reactor.
In the figure: 1-backwashing water inlet pipe, 2-sewage inlet pipe, 3-backwashing blower, 4-support leg, 5-main reaction tank, 6-negative pressure fan, 7-water outlet pipe, 8-backwashing water outlet pipe, 9-overflow weir, 10-fine packing layer, 11-coarse packing layer, 12-packing support plate, 13-gas distribution pipe and 14-water distribution pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the embodiment of the present invention:
example 1:
effluent TN of certain sewage treatment plant20mg/L, respectively adopting a deep bed denitrification filter tank and a negative pressure denitrification deep bed filter tank small test device to treat the water, wherein the treated water quantity is 1m3H is used as the reference value. Under the condition of the same carbon source adding amount, the water quality of inlet and outlet water is as follows:
| serial number | Process for the preparation of a coating | Inlet TN (mg/L) | Total nitrogen (mg/L) of effluent |
| 1 | Denitrification aeration biological filter | 20 | 15 |
| 2 | Negative pressure type denitrification aeration biological filter | 20 | 10 |
According to the data, the TN removal rate of the negative pressure type denitrification biological aerated filter is improved by 33.3%.
Example 2:
a denitrification biological aerated filter advanced treatment unit is added by upgrading and modifying the TN18mg/L effluent of a certain sewage treatment plant, the carbon source adding amount of the unit is 40mg/L (calculated by glucose), and the effluent TN12 mg/L. Then the denitrification biological aerated filter is transformed into a negative pressure type denitrification biological aerated filter, the carbon source adding amount is adjusted to 23mg/L (calculated by glucose), and the effluent TN12 mg/L. The adding amount of the carbon source is saved by 42.5 percent.
Example 3:
a certain sewage treatment plant adopts a negative pressure type denitrification aeration biological filter as an advanced treatment unit, sewage is introduced into a water distribution pipe 14 in a main reaction tank 5 through a sewage inlet pipe 2 by a lift pump, is uniformly distributed to a filler support plate 12, a coarse filler layer 11 and a fine filler layer 10, then is discharged through an overflow weir 9 and a water outlet pipe 7, and the discharged water reaches the required discharge standard.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A negative pressure type denitrification biological aerated filter reactor is characterized by comprising a backwashing water inlet pipe (1), a sewage water inlet pipe (2), a backwashing air blower (3), supporting legs (4), a main reaction tank (5), a negative pressure air blower (6), a water outlet pipe (7), a backwashing water outlet pipe (8), an overflow weir (9), a fine packing layer (10), a coarse packing layer (11), a packing support plate (12), a gas distribution pipe (13) and a water distribution pipe (14); a negative pressure formula denitrification aeration biological filter reactor main part retort (5) be the cylindrical retort that steel constitutes, backwash inlet tube (1), sewage inlet tube (2), backwash air-blower (3) are connected with main part retort (5) bottom, landing leg (4) weld in main part retort (5) bottom, negative pressure fan (6) are connected with main part retort (5) top gas outlet, outlet pipe (7), backwash outlet pipe (8) are connected with main part retort (5) top, overflow weir (9), thin packing layer (10), coarse packing layer (11), filler backup pad (12), gas distribution pipe (13), inside main part retort (5) were arranged in to water distribution pipe (14).
2. The negative pressure type denitrification biological aerated filter reactor according to claim 1, wherein the main reaction tank (5) is a cylindrical reaction tank made of steel, and the height-diameter ratio is 2: 1-5: 1.
3. The negative pressure type denitrification biological aerated filter reactor according to claim 1, wherein the backwashing water inlet pipe (1) and the sewage water inlet pipe (2) are respectively provided with an electric butterfly valve, so that automatic control can be realized, the backwashing water inlet pipe (1) and the sewage water inlet pipe (2) are connected through a tee joint and then connected with the main reaction tank (5) through a flange, and the inside of the main reaction tank (5) is connected with the water distribution pipe (14).
4. The negative pressure type denitrification biological aerated filter reactor according to claim 1, wherein the backwashing blower (3) is connected with the bottom of the main reaction tank (5) through a pipeline, an electric valve is arranged on the pipeline, automatic control can be realized, and the inside of the main reaction tank (5) is connected with the gas distribution pipe (13); the supporting legs (4) are welded at the bottom of the main reaction tank (5) and play a supporting role; the negative pressure fan (6) is connected with an air outlet hole at the top of the main reaction tank (5) through a pipeline.
5. A negative pressure type denitrification aeration biological filter reactor according to claim 1, wherein the water outlet pipe (7) and the backwashing water outlet pipe (8) are both provided with electric butterfly valves which can realize automatic control, the water outlet pipe (7) and the backwashing water outlet pipe (8) are connected through a tee joint and then connected with the main reaction tank (5) through a flange, and the inside of the main reaction tank (5) is connected with the overflow weir (9).
6. The negative pressure type denitrification biological aerated filter reactor according to claim 1, wherein the overflow weir (9), the fine packing layer (10), the coarse packing layer (11), the packing support plate (12), the air distribution pipe (13) and the water distribution pipe (14) are all arranged in the main reaction tank (5), and the overflow weir (9), the fine packing layer (10), the coarse packing layer (11), the packing support plate (12), the air distribution pipe (13) and the water distribution pipe (14) are arranged from top to bottom in sequence.
7. A negative pressure type denitrification biological aerated filter reactor according to claim 1, wherein the overflow weir (9) is a triangular water collection weir which surrounds the inner wall of the main reaction tank (5) for one circle.
8. A negative pressure type denitrification aeration biological filter reactor according to claim 1, wherein the total height of the fine filler layer (10) and the coarse filler layer (11) is 1.0-4.0 m, and the ratio is 9: 1-7: 1, and the ratio is as follows: the filtering material of the fine filler layer (10) has a grain size of 1-8mm, and the filtering material of the coarse filler layer (11) has a grain size of 8-15 mm.
9. The negative pressure type denitrification biological aerated filter reactor according to claim 1, wherein a filler support plate (12) is arranged below the fine filler layer (10) and the coarse filler layer (11), the air distribution pipes (13) and the water distribution pipes (14) are arranged below the filler support plate (12), the air distribution pipes (13) and the water distribution pipes (14) are arranged in a staggered manner, a plurality of microporous aeration heads are arranged on each air distribution pipe (13) at equal intervals, and the water distribution pipes (14) are provided with water distribution holes at equal intervals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022355400.8U CN213652004U (en) | 2020-10-21 | 2020-10-21 | Negative pressure type denitrification biological aerated filter reactor |
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| CN202022355400.8U CN213652004U (en) | 2020-10-21 | 2020-10-21 | Negative pressure type denitrification biological aerated filter reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702202A (en) * | 2022-03-25 | 2022-07-05 | 中国城市建设研究院有限公司 | Microorganism water quality purification filter tank |
| CN115487666A (en) * | 2022-08-26 | 2022-12-20 | 福州大学 | High-efficiency conversion of NO in flue gas into N 2 Method of O |
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2020
- 2020-10-21 CN CN202022355400.8U patent/CN213652004U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702202A (en) * | 2022-03-25 | 2022-07-05 | 中国城市建设研究院有限公司 | Microorganism water quality purification filter tank |
| CN114702202B (en) * | 2022-03-25 | 2024-04-23 | 中国城市建设研究院有限公司 | Microorganism water quality purifying filter tank |
| CN115487666A (en) * | 2022-08-26 | 2022-12-20 | 福州大学 | High-efficiency conversion of NO in flue gas into N 2 Method of O |
| CN115487666B (en) * | 2022-08-26 | 2023-09-12 | 福州大学 | Efficient conversion of NO in flue gas to N 2 O method |
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