CN216764459U

CN216764459U - Floating-hanging type filler carbon-releasing denitrification reactor

Info

Publication number: CN216764459U
Application number: CN202220157238.5U
Authority: CN
Inventors: 王莹; 孙书磊
Original assignee: Jiangsu Lanrui Environmental Protection Technology Co ltd
Current assignee: Jiangsu Lanrui Environmental Protection Technology Co ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-17
Anticipated expiration: 2032-01-20

Abstract

The utility model discloses a floating-type filler carbon-releasing denitrification reactor which comprises a reaction box, wherein a nitrification tank, a denitrification tank and a filter wall are sequentially arranged in the reaction box from one side to the other side, floating-type fillers positioned in the nitrification tank and the denitrification tank are fixedly arranged in the reaction box, a water inlet is formed in one end below the reaction box, a water outlet is formed in the other end below the reaction box, a microporous aeration pipe positioned in the nitrification tank is fixedly arranged on the bottom surface in the reaction box, the filter wall is detachably arranged in the reaction box, and the microporous aeration pipe is externally connected with an aeration fan. The utility model has the advantages that: water is fed from the bottom of the reaction box, and is discharged from the bottom finally after alternately feeding and discharging water up and down, so that drainage and emptying can be realized during maintenance, and filter materials can be conveniently replaced; the nitrification, denitrification and filtration functions are realized in the whole reactor; each unit automatically flows by gravity to complete sewage purification, the whole device only needs simple aeration, and sludge can be discharged by gas stripping when more sludge exists; the whole power consumption is low, and a carbon source does not need to be added.

Description

Floating-hanging type filler carbon-releasing denitrification reactor

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a floating filler carbon-releasing denitrification reactor.

Background

Since the lake Tai blue algae explosion caused water crisis in 2007, particularly, ten items of water are released, and after the national environmental protection department releases and revises the quotation of the national environmental protection standard GB 18918 plus 2002, Beijing, Tianjin, Zhejiang, Taihu river basin, nest lake basin, Mintuo river basin, Dianchi, Xiongan and the like successively release local standards and basin standards based on quasi III and quasi IV standards, and increasingly higher removal requirements are provided for total nitrogen.

TN index in sewage discharge standards of various regions is improved to different degrees. The advanced cities have earlier improved standards, such as the Beijing and Tianjin markets release relevant emission standards before 2015. In the standard A of a newly-built sewage plant DB 11/890-2012, the discharge standard of water pollutants of urban sewage treatment plants in Beijing City in 2012, the TN is improved to 10mg/L from 15mg/L of primary A, and the total phosphorus is improved to 0.2 mg/L. In 2015 to 2018, TN, TP and TP were respectively increased to 10mg/L and 0.3mg/L respectively in Tianjin, nido lake basin, Sichuan province, Zhejiang province and Taihu lake basin. The landmark in Kunming city is the most strict, and TN in the A-level standard of the emission limit value of main water pollutants of urban sewage treatment plants reaches 5mg/L respectively.

According to the annual book of urban and rural construction statistics in 2017, 3781 cities 2209 and 1572 are available in sewage plants in China. By incomplete statistics, the main pollutants of the municipal sewage treatment plants in China currently implement the IV and quasi-IV standards, and 39 water plants with the daily treatment capacity of more than 20 million tons exist.

At present, the most similar denitrification technical scheme in the prior art to the utility model is a denitrification biological filter and an ozone catalytic oxidation process unit.

A large amount of carbon sources need to be added while denitrification is carried out in the denitrification deep bed filter, so that the cost of the medicament is high; in addition, the COD is easily out of limits due to improper control of the adding amount of the carbon source. Ozone in the catalytic oxidation of ozone needs to be prepared on site, the cost of an ozone generator and a reactor is high, and the power consumption is high; the oxidation of ozone cannot remove nitrate nitrogen in the influent water, and the purpose of removing total nitrogen is difficult to achieve. The control and operation maintenance of the two systems have high requirements on personnel capacity, the workload is large, ozone is harmful to human bodies, and personnel discomfort is easily caused after leakage.

SUMMERY OF THE UTILITY MODEL

In order to solve the various problems, the utility model provides a floating-hanging type filler carbon-releasing denitrification reactor, which is characterized in that water is fed from the bottom of a reactor and is discharged from the bottom after alternately feeding and discharging water from top to bottom, so that drainage and emptying can be realized during maintenance, and filter materials can be conveniently replaced; the nitrification, denitrification and filtration functions are realized in the whole reactor; each unit completes sewage purification through gravity flow, the whole device only needs simple aeration, and sludge can be discharged through air stripping when more sludge exists; the whole power consumption is low, and a carbon source does not need to be added.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a float-hang filler carbon release denitrogenation reactor, includes the reaction box, from one side to the opposite side in the reaction box be equipped with in proper order and nitrify pond, denitrification pond and filter wall, the inside fixed mounting of reaction box has the float-hang filler that is located nitrify pond and denitrification pond, one end is opened below the reaction box has the water inlet, and the other end is opened below has the delivery port, fixed mounting has the micropore aeration pipe that is located nitrify pond on the inside bottom surface of reaction box, filter wall detachable installs in the reaction box, the external aeration fan of micropore aeration pipe.

As an improvement, the floating type packing comprises a weaving layer fixed inside the reaction box, a packing layer is filled inside the weaving layer, and a foam block is filled at the upper end inside the weaving layer.

As an improvement, the filler layer in the nitrification tank is foam filler.

As an improvement, the filler layer in the denitrification pool is a slow-release solid carbon source material.

As an improvement, the side surface of the filter wall is provided with a metal screen plate, and a ceramsite filter material is filled in the filter wall.

As an improvement, a fixed support is integrally formed between the lower ends of the two side surfaces of the reaction box, the lower end of the floating filler is fixed on the fixed support, and the microporous aeration pipe is arranged below the fixed support.

As an improvement, a gas stripping mud pipe extending into the lower end of the inner part of the reaction box is fixedly arranged on the reaction box.

Compared with the prior art, the utility model has the advantages that: when the device is used, the floating filler is combined with the slow-release carbon source, and a plurality of units are arranged according to the functions of the units, so that the integrated denitrification function is realized; the reaction box runs in a gravity-flow mode without power lifting, and the whole system only needs a matched aeration fan, so that the power consumption is low; because of the action of slowly releasing the carbon source, no carbon source medicament is required to be added in the running process, and the running cost is low; the integrated reactor can be maintained and the filler can be replaced after being emptied; the filter wall can be detached on line and washed or replaced off line, and operation and maintenance are convenient.

Drawings

Fig. 1 is a front view of the internal structure of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic structural diagram of the floating filler of the present invention.

As shown in the figure: 1. a reaction box; 2. a nitrification tank; 3. a denitrification tank; 4. a filter wall; 5. floating and hanging type filler; 501. weaving layer; 502. a filler layer; 503. a foam block; 6. a microporous aeration pipe; 7. filtering with ceramsite; 8. fixing a bracket; 9. and (4) air stripping sludge pipes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Combine attached figure 1 to attached figure 3, a float-hang filler carbon-releasing denitrification reactor, including reaction box 1, from one side to opposite side be equipped with in proper order in the reaction box 1 and nitrify pond 2, denitrification pond 3 and filter wall 4, the inside fixed mounting of reaction box 1 has the float-hang filler 5 that is located nitrify pond 2 and denitrification pond 3, the one end is opened below reaction box 1 has the water inlet, the other end is opened below has the delivery port, fixed mounting has the micropore aeration pipe 6 that is located nitrify pond 2 on the inside bottom surface of reaction box 1, filter wall 4 detachable installs in reaction box 1, micropore aeration pipe 6 external aeration fan.

The floating type packing 5 comprises a weaving layer 501 fixed inside the reaction box 1, a packing layer 502 is filled inside the weaving layer 501, and a foam block 503 is filled at the upper end inside the weaving layer 501.

Specifically, the floating filler 5 (biological ribbon) is strip-shaped, and one end of the floating filler is fixed at the bottom of the tank; the composite material mainly comprises a woven layer 501 and a filler layer 502, wherein the woven layer 501 can be provided with the density degree of fibers according to actual needs, so that a microbial system with symbiotic algae and bacteria is formed on the surface of the woven layer 501; in the nitrification tank 2, the filler layer 502 is a foam filler; the bottom of the nitrification tank 2 is provided with a microporous aeration pipe 6; in denitrification 3, the filler layer 502 is a slow-release solid carbon source material and is filled in the woven layer 501; in order to increase the floatability of attached fillers, the floating ribbon is provided with a foam block 503 at the non-fixed end, so that the fillers have buoyancy and keep a floating state in water flow;

a filtering wall 4 is arranged behind the denitrification tank 3, the wall surface is a metal screen plate, and the inside is filled with a ceramsite filtering material 7.

A fixed support 8 is integrally formed between the lower ends of the two side surfaces of the reaction box 1, the lower end of the floating filler 5 is fixed on the fixed support 8, and the microporous aeration pipe 6 is arranged below the fixed support 8.

The reaction box 1 is fixedly provided with a gas stripping mud pipe 9 which extends into the lower end of the inner part of the reaction box 1.

The working principle of the utility model is as follows: the floating-hanging type filler carbon-releasing denitrification reactor has a cuboid container structure as a whole; the reaction box 1 is divided into three units, the first unit is a nitrification tank 2 used for nitrification reaction, an upper biological streamer is used for biochemical film hanging, the filler is in a floating state when water exists, and a microporous aeration pipe 6 is arranged at the lower part; the second unit is a denitrification tank 3 which is used for denitrification, is internally provided with a biological streamer containing a slow-release carbon source and specially cultures denitrifying bacteria; the third unit is a filter 4 which is a detachable part and can be integrally detached and replaced, and the filter material is cleaned off line and then backfilled; the device is characterized in that water is fed from the bottom, and is discharged from the bottom finally after water is alternately fed and discharged from the top and the bottom, so that water can be drained and emptied during maintenance, and filter materials can be conveniently replaced;

the nitrification, denitrification and filtration functions are realized in the whole reactor; each unit automatically flows by gravity to complete sewage purification, the whole device only needs simple aeration, and sludge can be discharged by gas stripping when more sludge exists; the whole power consumption is low, and a carbon source does not need to be added.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A floating-hanging type filler carbon-releasing denitrification reactor comprises a reaction box (1) and is characterized in that a nitrification tank (2), a denitrification tank (3) and a filter wall (4) are sequentially arranged in the reaction box (1) from one side to the other side, floating-hanging type fillers (5) located in the nitrification tank (2) and the denitrification tank (3) are fixedly installed in the reaction box (1), a water inlet is formed in one end below the reaction box (1), a water outlet is formed in the other end below the reaction box (1), a microporous aeration pipe (6) located in the nitrification tank (2) is fixedly installed on the bottom surface in the reaction box (1), the filter wall (4) is detachably installed in the reaction box (1), and the microporous aeration pipe (6) is externally connected with an aeration fan.

2. The floating type packed carbon-releasing denitrification reactor as claimed in claim 1, wherein: the floating type packing (5) comprises a weaving layer (501) fixed inside the reaction box (1), a packing layer (502) is filled inside the weaving layer (501), and a foam block (503) is filled at the upper end inside the weaving layer (501).

3. The floating type packed carbon-releasing denitrification reactor as claimed in claim 2, wherein: the filler layer (502) in the nitrification tank (2) is foam filler.

4. The floating type packed carbon-releasing denitrification reactor as claimed in claim 2, wherein: a filler layer (502) in the denitrification tank (3) is a slow-release solid carbon source material.

5. The floating type packed carbon-releasing denitrification reactor as claimed in claim 1, wherein: the side surface of the filter wall (4) is provided with a metal screen plate, and a ceramsite filter material (7) is filled in the filter wall (4).

6. The floating type packed carbon-releasing denitrification reactor as claimed in claim 1, wherein: a fixed support (8) is integrally formed between the lower ends of the two side faces of the reaction box (1), the lower end of the floating filler (5) is fixed on the fixed support (8), and the microporous aeration pipe (6) is arranged below the fixed support (8).

7. The floating type packed carbon-releasing denitrification reactor as claimed in claim 1, wherein: and a gas stripping sludge discharge pipe (9) extending into the lower end of the inner part of the reaction box (1) is fixedly arranged on the reaction box (1).