CN219526395U

CN219526395U - Nitrifying and denitrifying mobile biomembrane reactor

Info

Publication number: CN219526395U
Application number: CN202320182433.8U
Authority: CN
Inventors: 王洪君; 万珍; 王庆博; 谢文敬; 雷亚超; 刘家伟
Original assignee: Camce Wuda Design Group Co ltd
Current assignee: Camce Wuda Design Group Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-08-15
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to a nitrification and denitrification mobile biological membrane reactor, which comprises a water inlet pipe, a water outlet pipe, an elastic filler bracket, elastic fillers, a plurality of denitrification tanks and a plurality of nitrification tanks, wherein the nitrification tanks are arranged at the downstream of the denitrification tanks, the side walls of the denitrification tanks adjacent to the nitrification tanks are provided with crossing holes correspondingly, and the denitrification tanks are communicated with the nitrification tanks through the crossing holes; a water collecting area at the upstream of the denitrification tank is provided with a water inlet pipe which is communicated with a water inlet hole formed in the side wall at the upstream of the denitrification tank; a water outlet hole is formed in the downstream side wall of the nitrifying pond, and a water collecting area outside the water outlet hole is provided with a water outlet pipe; the denitrification tank and the nitrification tank are empty to be provided with a filler support, and elastic filler is arranged in the filler support. The beneficial effects of the utility model are as follows: compared with the traditional filter tank, the device has the advantages of eliminating equipment rooms, reducing the number of equipment, reducing construction cost by 30 percent, reducing occupied area by 10 percent and having popularization value.

Description

Nitrifying and denitrifying mobile biomembrane reactor

Technical Field

The utility model relates to the technical field of municipal sewage treatment, in particular to a nitrification and denitrification mobile biofilm reactor.

Background

The national standard GB (18918-2002) specifies that the highest emission standard of the urban sewage treatment plant is the first class A standard in the pollutant emission standard of urban sewage treatment plants.

In order to realize the standard emission of total nitrogen and ammonia nitrogen, the main stream technology at present adopts a nitrification and denitrification deep bed filter technology, and the total nitrogen and the ammonia nitrogen are further removed on the basis of secondary treatment. In practical engineering design, the traditional nitrification and denitrification deep bed filter has the inherent disadvantages: 1. the water loss is large, and the thickness of the filtering material is generally more than 2 meters when the filtering material is filtered, and the water loss is generally more than 2 meters when the front and rear water distribution and pipeline losses are added, so that the tail water discharge port is too low, secondary lifting discharge is required, and the transportation maintenance cost and the capital cost of front and rear structures are increased; 2. the operation is complex, the nitrification and denitrification deep-bed filter tank needs to perform gas-water combined back flushing at regular time, the equipment is more, and the operation steps are more; 3. the investment is high, the traditional nitrification and denitrification deep bed filter has thick filler and large pool depth, equipment rooms, blower rooms and back flushing rooms are required to be configured, and the civil engineering and equipment investment is large. The problems are also the main problems for restricting the large-scale application of the traditional nitrification and denitrification deep bed filter.

Disclosure of Invention

The utility model aims to solve the technical problem of researching a nitrification and denitrification mobile biomembrane reactor, overcomes the defects of the traditional nitrification and denitrification deep bed filter, and can realize the same effect of removing total nitrogen and ammonia nitrogen.

The technical scheme for solving the technical problems is as follows:

a nitrification and denitrification mobile biofilm reactor comprises a water inlet pipe, a water outlet pipe, an elastic filler support, elastic fillers, a plurality of denitrification tanks and a plurality of nitrification tanks, wherein the nitrification tanks are arranged at the downstream of the denitrification tanks, the adjacent side walls of the denitrification tanks and the nitrification tanks are respectively provided with a crossing hole correspondingly, and the denitrification tanks are communicated with the nitrification tanks through the crossing holes; a water collecting area at the upstream of the denitrification tank is provided with a water inlet pipe which is communicated with a water inlet hole formed in the side wall at the upstream of the denitrification tank; a water outlet hole is formed in the downstream side wall of the nitrifying pond, and a water collecting area outside the water outlet hole is provided with a water outlet pipe; elastic filler brackets are arranged in the denitrification tank and the nitrification tank in a vacation mode, and elastic fillers are arranged in the elastic filler brackets.

The beneficial effects of the utility model are as follows: sewage enters the denitrification tank through the water inlet pipe, uniformly flows into the denitrification tank from the water inlet hole on the denitrification tank to perform denitrification reaction, total nitrogen in the sewage is removed, the sewage after denitrification reaction enters the nitrification tank through the crossing hole to perform nitrification reaction, ammonia nitrogen content in the sewage is reduced, the sewage after nitrification enters the water collecting area through the water outlet hole, and the sewage is discharged from the water outlet pipe. Compared with the traditional nitrification and denitrification deep bed filter, the device is based on the process principle of the traditional nitrification and denitrification deep bed filter, combines the characteristics of a mobile biological film reaction tank, combines the advantages of the traditional nitrification and denitrification deep bed filter, ensures the effect of removing total nitrogen and ammonia nitrogen based on the process principle of the traditional nitrification and denitrification deep bed filter, changes the traditional sand filter into an elastic filler, reduces the head loss from 2 meters to 0.3 meter, and reduces the transportation and maintenance cost by 45 percent; compared with the traditional filter tank, the device has the advantages of eliminating equipment rooms, reducing the number of equipment, reducing construction cost by 30 percent, reducing occupied area by 10 percent and having popularization value.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the water inlet hole and the water outlet hole are respectively formed in the bottom side surface of the denitrification tank and the top side surface of the nitrification tank, the crossing hole is formed in the bottom side surfaces of the denitrification tank and the nitrification tank, the adjacent denitrification tanks and the adjacent nitrification tanks are separated by a partition board, and a gap for sewage to flow is formed in the upper portion of the partition board.

Further, the bottom of the denitrification tank and the bottom of the nitrification tank are respectively provided with a perforated sludge discharge pipe.

Further, the water collecting area outside the water outlet hole of the nitrification tank is provided with an internal reflux pump, and the internal reflux pump is communicated with the water inlet pipe at the upstream of the denitrification tank through an internal reflux pipe.

Further, a water distributing gate is arranged on the water inlet pipe.

Further, the elastic filler support is made of stainless steel.

Further, the top of the denitrification tank and the top of the nitrification tank are respectively provided with an air supply main pipe, and the bottom of the denitrification tank and the bottom of the nitrification tank are respectively provided with an air supply perforation branch pipe.

Drawings

FIG. 1 is a top view of a nitrifying and denitrifying mobile biofilm reactor of the present utility model;

FIG. 2 is a cross-sectional view of A-A of a nitrifying and denitrifying mobile biofilm reactor according to the present utility model;

FIG. 3 is a B-B cross-sectional view of a nitrifying and denitrifying mobile biofilm reactor according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. the water inlet pipe, 2, the water distribution gate, 3, the inlet opening, 4, the crossing hole, 5, the outlet opening, 6, the outlet pipe, 7, the internal reflux pump, 8, the internal reflux pipe, 9, the air supply main pipe, 11, the elastic filler support, 12, the elastic filler, 13, the air supply perforation branch pipe, 100, the denitrification tank, 101, the nitrifying tank.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

As shown in fig. 1 to 3, a nitrification and denitrification mobile biofilm reactor according to embodiment 1 of the present utility model includes a water inlet pipe 1, a water outlet pipe 6, an elastic filler support 11, an elastic filler 12, a plurality of denitrification tanks 100 and a plurality of nitrification tanks 101, wherein the nitrification tanks 101 are arranged at the downstream of the denitrification tanks 100, the side walls of the denitrification tanks 100 adjacent to the nitrification tanks 101 are respectively provided with a crossing hole 4, and the denitrification tanks 100 are communicated with the nitrification tanks 101 through the crossing holes 4; a water collecting area at the upstream of the denitrification tank 100 is provided with a water inlet pipe 1, and the water inlet pipe 1 is communicated with a water inlet hole 3 formed in the side wall at the upstream of the denitrification tank 100; a water outlet hole 5 is formed in the downstream side wall of the nitrifying pond 101, and a water collecting area outside the water outlet hole 5 is provided with a water outlet pipe 6; elastic filler brackets 11 are arranged in the denitrification tank 100 and the nitrification tank 101 in a hollow mode, and elastic fillers 12 are arranged in the elastic filler brackets 11.

Sewage enters the denitrification tank 100 through the water inlet pipe 1, uniformly flows into the denitrification tank 100 from the water inlet hole 3 on the denitrification tank 100 to perform denitrification reaction, total nitrogen in the sewage is removed, the sewage after denitrification reaction enters the nitrification tank 101 through the crossing hole 4 to perform nitrification reaction, ammonia nitrogen content in the sewage is reduced, the sewage after nitrification enters the water collecting area through the water outlet hole 5, and the sewage is discharged from the water outlet pipe 6. Compared with the traditional nitrification and denitrification deep bed filter, the device is based on the process principle of the traditional nitrification and denitrification deep bed filter, combines the characteristics of a mobile biological film reaction tank, combines the advantages of the traditional nitrification and denitrification deep bed filter, ensures the effect of removing total nitrogen and ammonia nitrogen based on the process principle of the traditional nitrification and denitrification deep bed filter, changes the traditional sand filter into an elastic filler, reduces the head loss from 2 meters to 0.3 meter, and reduces the transportation and maintenance cost by 45 percent; compared with the traditional filter tank, the device has the advantages of eliminating equipment rooms, reducing the number of equipment, reducing construction cost by 30 percent, reducing occupied area by 10 percent and having popularization value.

In specific implementation, the plurality of denitrification tanks 100 and the nitrification tank 101 can be arranged side by side, and the plurality of denitrification tanks 100 are communicated step by step and perform denitrification reaction with sewage; the nitrifying ponds 101 are communicated step by step and carry out nitrifying reaction with sewage, and a crossing hole 4 is formed between the nitrifying pond 101 of the last stage and the nitrifying pond 101 of the last stage.

In the nitrification and denitrification mobile biofilm reactor of the embodiment 2 of the utility model, on the basis of the embodiment 1, a water inlet hole 3 and a water outlet hole 5 are respectively formed on the bottom side surface of a denitrification tank 100 and the top side surface of a nitrification tank 101, a crossing hole 4 is formed on the bottom side surfaces of the denitrification tank 100 and the nitrification tank 101, adjacent denitrification tanks 100 and adjacent nitrification tanks 101 are separated by a partition plate, and a gap for sewage to flow is formed at the upper part of the partition plate. The arrangement of the baffle plate and the crossing holes 4 ensures that sewage flows into the denitrification tank 100 and the nitrification tank 101 from the lower part and flows out from the upper part, so that the denitrification and the nitrification reactions are more thorough.

In the nitrifying and denitrifying mobile biofilm reactor disclosed by the embodiment 3 of the utility model, on the basis of the embodiment 1, the bottoms of the denitrifying tank 100 and the nitrifying tank 101 are provided with perforated sludge discharge pipes 9. Due to the action of gravity, the sludge can be settled and piled outside the perforated sludge discharge pipe 9, and the sludge can be cleaned by communicating the suction pump with the perforated sludge discharge pipe 9, so that the operation is convenient.

In the nitrification and denitrification mobile biofilm reactor of the embodiment 4 of the utility model, on the basis of the embodiment 1, an inner reflux pump 7 is arranged in a water collecting area outside a water outlet 5 of a nitrification tank 101, and the inner reflux pump 7 is communicated with a water inlet pipe 1 at the upstream of a denitrification tank 100 through an inner reflux pipe 8. And mixing the reacted sewage with unreacted sewage to further improve the treatment effect. In specific implementation, the reflux ratio is controlled between 25% and 150%.

In the embodiment 5 of the utility model, a nitrification and denitrification mobile biological membrane reactor is provided, and on the basis of the embodiment 4, a water distributing gate 2 is arranged on a water inlet pipe 1. The reacted sewage and unreacted sewage can be accurately proportioned through the water distributing gate 2, and the operation is convenient.

The embodiment 6 of the utility model relates to a nitrifying and denitrifying mobile biological membrane reactor, and the elastic filler support 11 is made of stainless steel on the basis of the embodiment 1. Stainless steel is durable and can not rust when being contacted with sewage for a long time.

In the mobile biofilm reactor for nitrification and denitrification according to embodiment 7 of the present utility model, on the basis of any one of embodiments 1 to 6, air supply dry pipes 10 are respectively provided at the tops of the denitrification tank 100 and the nitrification tank 101, and air supply perforated branch pipes 13 are respectively provided at the bottoms of the denitrification tank 100 and the nitrification tank 101. The denitrification tank 100 and the nitrification tank 101 are supplied with air, so that good gas atmosphere is ensured when denitrification and nitrification are performed on sewage. In specific implementation, continuous aeration is performed in the nitrification tank 101, and intermittent short-time aeration is performed in the denitrification tank 100.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The nitrification and denitrification mobile biofilm reactor is characterized by comprising a water inlet pipe (1), a water outlet pipe (6), an elastic filler bracket (11), elastic fillers (12), a plurality of denitrification tanks (100) and a plurality of nitrification tanks (101), wherein the nitrification tanks (101) are arranged at the downstream of the denitrification tanks (100), crossing holes (4) are correspondingly formed in the side walls of the denitrification tanks (100) adjacent to the nitrification tanks (101), and the denitrification tanks (100) are communicated with the nitrification tanks (101) through the crossing holes (4); the water collecting area at the upstream of the denitrification tank (100) is provided with the water inlet pipe (1), and the water inlet pipe (1) is communicated with a water inlet hole (3) formed in the side wall at the upstream of the denitrification tank (100); a water outlet hole (5) is formed in the downstream side wall of the nitrifying pond (101), and a water collecting area outside the water outlet hole (5) is provided with the water outlet pipe (6); elastic filler brackets (11) are arranged in the denitrification tank (100) and the nitrification tank (101) in an empty mode, and elastic fillers (12) are arranged in the elastic filler brackets (11).

2. The nitrification and denitrification mobile biofilm reactor according to claim 1, characterized in that the water inlet hole (3) and the water outlet hole (5) are respectively formed in the bottom side surface of the denitrification tank (100) and the top side surface of the nitrification tank (101), the crossing hole (4) is formed in the bottom side surfaces of the denitrification tank (100) and the nitrification tank (101), adjacent denitrification tanks (100) and adjacent nitrification tanks (101) are separated by a partition plate, and a gap for sewage to flow is formed in the upper portion of the partition plate.

3. The nitrifying and denitrifying mobile biofilm reactor according to claim 1, characterized in that the bottom of the denitrifying tank (100) and the bottom of the nitrifying tank (101) are provided with perforated sludge discharge pipes (9).

4. A nitrifying and denitrifying mobile biofilm reactor according to claim 1, characterized in that a water collecting zone outside the water outlet hole (5) of the nitrifying tank (101) is provided with an internal reflux pump (7), said internal reflux pump (7) being in communication with the water inlet pipe (1) upstream of the denitrifying tank (100) through an internal reflux pipe (8).

5. The nitrification and denitrification mobile biofilm reactor as claimed in claim 4, characterized in that a water distribution gate (2) is provided on the water inlet pipe (1).

6. A nitrifying and denitrifying mobile biofilm reactor according to claim 1, characterized in that the elastic filler support (11) is made of stainless steel.

7. A nitrification and denitrification mobile biofilm reactor according to any of claims 1 to 6, characterized in that the tops of the denitrification tank (100) and the nitrification tank (101) are both provided with an air supply main pipe (10), and the bottoms of the denitrification tank (100) and the nitrification tank (101) are both provided with an air supply perforation branch pipe (13).