CN211226543U

CN211226543U - Denitrification fluidized bed denitrification treatment reactor

Info

Publication number: CN211226543U
Application number: CN201921566296.8U
Authority: CN
Inventors: 汪林; 牛志华; 张炜铭; 吕振华; 吴维涛; 徐邵赟
Original assignee: Jiangsu Nju Environmental Technology Co ltd
Current assignee: Jiangsu Nju Environmental Technology Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-08-11
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a denitrification fluidized bed denitrification handles reactor belongs to the waste water treatment field, including inner tube, suit in the outside urceolus of inner tube the inner tube communicates with the urceolus bottom, sets up the clearance between the section of thick bamboo wall of the two, urceolus section of thick bamboo wall is less than inner tube section of thick bamboo wall, and the urceolus upper end is for opening the structure, the inner tube top is covered with the gas collecting channel, be out the water zone between the structure of opening of gas collecting channel and urceolus, be equipped with the gas collecting pipeline between gas collecting channel and the reactor bottom. The bottom of the reactor is of a cone structure, a water inlet area, an aeration unit and a water distribution unit are arranged at the bottom of the reactor, and the gas collection pipeline is communicated with the aeration unit. The utility model discloses a device collects sewage treatment and mud-water separation in an organic whole, and set up the sedimentation tank alone among the prior art and carry out mud-water separation and compare, have the reduction area, practice thrift the advantage of cost, can carry out resource utilization with the gas that self denitrogenation handled the production simultaneously, further practice thrift the running cost.

Description

Denitrification fluidized bed denitrification treatment reactor

Technical Field

The utility model relates to a waste water treatment field, concretely relates to denitrification fluidized bed denitrification processing apparatus.

Background

With the economic development and the improvement of living standard, N, P discharged into the environment by human beings is gradually increased, finally eutrophication of water body is caused, nitrogen is an important pollutant causing eutrophication of water body, and with the increasing importance of discharge standard on nitrogen discharge, the traditional biological denitrification method is further developed. How to economically, efficiently and safely remove nitrate nitrogen in water and research and develop a high-efficiency and stable wastewater enhanced biological denitrification reactor/process becomes an urgent technical demand in the field of wastewater treatment. The existing common sewage denitrification processes comprise an activated sludge process, a biofilm process, a biological filter and other processes and various combined processes, wherein the biofilm process is to add a certain amount of bioactive filler into a reactor to improve the microbial concentration in the reactor, and the biological fluidized bed technology in the biofilm process has the advantages of high volume load, high mass transfer speed, strong impact resistance, stable operation and the like, and is increasingly paid more attention by the water treatment world.

Through retrieval, related applications disclosed in the prior art, such as chinese patent application No. 201410150882.X, an application with publication date of 2015, 4 months and 15 days, disclose an autotrophic denitrification reaction device, a denitrification system and a denitrification method thereof, wherein the device of the application comprises a shell, and an oxygen-limited nitrosation reaction zone, a heterotrophic denitrification gas production zone and an upflow autotrophic denitrification zone in the shell; a liquid inlet and a liquid outlet are arranged on the shell, and the liquid inlet is communicated with the oxygen-limited nitrosation reaction zone; the liquid outlet is communicated with the upflow autotrophic denitrification area; the oxygen-limited nitrosation reaction zone is arranged in the central area of the upper half part of the shell; the heterotrophic denitrification gas production zone is arranged in the lower area of the oxygen-limited nitrosation reaction zone and is communicated with the oxygen-limited nitrosation reaction zone; the upflow autotrophic denitrification zone surrounds the periphery of the oxygen-limiting nitrosation reaction zone, and the bottom of the upflow autotrophic denitrification zone is communicated with the heterotrophic denitrification gas production zone.

Chinese patent application No. 201711154644.6, application published as 2018.03.02, discloses a sulfur autotrophic denitrification and denitrogenation sulfur removal reactor, which comprises a reactor body and a base, wherein the reactor body is fixed on the base, and the reactor body is provided with a water inlet area, an elemental sulfur recovery area, a sulfur autotrophic denitrification area, a three-phase separation area, a water outlet area and a gas collection area from bottom to top; a filter cloth is arranged between the water inlet area and the elemental sulfur recovery area; the water outlet area is provided with an overflow weir and a water outlet, and the water outlet is connected with a water outlet pipe; the gas collection area is provided with a gas outlet; the upper part of the three-phase separation area is provided with a stirring device.

Although the device of the above application has higher treatment efficiency, the device is more complex, and the operation cost is increased to a certain extent, so the invention of the denitrification treatment reactor with simple and convenient structure and lower operation cost is the key for improving the denitrification efficiency on the whole.

Disclosure of Invention

1. Problems to be solved

To the problem that the denitrification treatment reactor running cost is high among the prior art, the utility model aims to provide a simple structure, the running cost is low, the efficient denitrification treatment reactor of denitrogenation.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model provides a denitrification treatment reactor, including inner tube, suit in the outside urceolus of inner tube the inner tube communicates with urceolus bottom, sets up the clearance between the section of thick bamboo wall of the two, urceolus section of thick bamboo wall is less than the inner tube section of thick bamboo wall, and the urceolus upper end is for opening the structure, the inner tube top is covered with the gas collecting channel, for the water outlet zone between the structure of opening of gas collecting channel and urceolus, the clearance of the section of thick bamboo wall of interior urceolus is the settling zone, be equipped with the gas collecting channel between gas collecting channel and the reactor bottom.

The utility model discloses a device sets up the nested structure of interior urceolus, and urceolus upper end is for opening the structure, is covered with the gas collecting channel on the inner tube top simultaneously, consequently can effectively collect the gas that denitrification self produced, can be used for the aeration treatment of denitrification treatment reactor with the gas that denitrification produced behind the gas collecting pipeline between gas collecting channel and reactor bottom.

Furthermore, the utility model discloses the denitrification's of device play water zone is located the open structure of gas collecting channel and urceolus between, and this region can form effectual water seal state when the operation to guarantee that the gas collecting channel can carry out efficient gas collection.

On the other hand, the utility model discloses a between urceolus including the settling zone setting, the water outlet zone setting is between the open structure of gas collecting channel and urceolus, and collection sewage treatment and mud-water separation are in an organic whole, and set up the sedimentation tank alone among the prior art and carry out mud-water separation and compare, have the advantage that reduces area, practice thrift the cost.

As a further improvement, the reactor further comprises a water inlet area, an aeration unit and a water distribution unit, the gas collecting pipeline is communicated with the aeration unit, the bottom of the reactor is of a cone structure, and the water distribution unit is arranged inside the cone structure and is positioned between the inner cylinder and the outer cylinder. The bottom of the reactor is arranged into a cone structure for the purposes of: when denitrification treatment is carried out, a small amount of filler and sludge rise to a settling zone, and the small amount of filler and sludge slide to the bottom of the reactor through a cone structure at the bottom and form a fluidized state again through aeration.

As a further improvement, the water inlet area includes the inlet tube, the water inlet area is including being connected to the inlet channel of reactor bottom, the inlet channel on be equipped with intake pump, water intaking valve and intake flowmeter, can adjust the inflow, effectively regulate and control waste water treatment's volume.

As a further improvement of the utility model, the gas collecting pipeline is provided with a gas flowmeter. The gas flowmeter is arranged to adjust the flow rate by observing the gas flow rate.

As a further improvement, the water distribution unit comprises a duckbill nozzle water distributor, and the duckbill nozzle water distributor is arranged between the inner cylinder outer wall and the outer cylinder inner wall of the reactor bottom.

As a further improvement of the utility model, the gas collecting pipeline is provided with an air inlet valve, a gas check valve and an air compressor. The air compressor is mainly supplied with gas generated by denitrification reaction, proper air is supplemented by regulating and controlling a gas valve of the air inlet valve, and an air outlet of the air compressor is fixed at the bottom of the reactor and is connected with an aeration unit arranged at the bottom.

As a further improvement of the utility model, the reactor further comprises an external air inlet pipeline which is communicated with the air compressor. The arrangement of the external air inlet pipeline has two functions: 1) when the gas in the reactor is insufficient, the gas can be supplemented through an external gas inlet pipe to maintain the pressure balance of the reactor; 2) the denitrification process is completed under the anaerobic-anoxic condition, a proper amount of oxygen can be supplemented through an external air inlet pipe, and the micro-aerobic condition is favorable for the reproduction of denitrifying bacteria and the increase of the concentration of the denitrifying bacteria in the reactor.

As a further improvement, the inner cylinder is provided with a filler intercepting net outside. The filler interception net limits the filler in a specific filler reaction area, and effectively solves the problems of filler loss and blockage.

As a further improvement of the utility model, the aeration unit comprises microporous aeration pipes which are uniformly distributed.

As a further improvement, the number of the duckbill nozzle water distributors is 4-8.

As a further improvement of the utility model, the gas collecting hood is also provided with a gas pressure gauge and a gas release valve. The pressure gauge is arranged to monitor the pressure condition in the gas-collecting hood at any time, and if the pressure exceeds the normal pressure, the air can be discharged and decompressed through the air discharge valve.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a denitrification treatment reactor can apply to the aeration treatment of reactor self with the gas that the denitrification produced behind the gas collecting channel that sets up between gas collecting channel and reactor bottom, compares gaseous direct discharge between with prior art, can reach the purpose that the resource further utilized. On the other hand, the utility model discloses a device sets up the precipitation zone between the urceolus, and gas collecting channel and urceolus open the structure and establish the water outlet area, can realize collecting sewage treatment and mud-water separation in an organic whole, and simple structure sets up the sedimentation tank alone among the prior art and carries out mud-water separation and compare, has the advantage that reduces area, practices thrift the cost. Overall simple structure, great reduction the running cost, do benefit to the popularization.

(2) The utility model discloses a reactor is handled in denitrification, denitrification's play pool is located the open structure of gas collecting channel and urceolus between, and this region can form effectual water seal state when the operation to guarantee that the gas collecting channel can carry out efficient gas collection in.

(3) The utility model discloses a denitrification treatment reactor, make the complete fluidization of the biofilm carrier mud in the reactor under the aeration state, compare with the stirring operation mode of prior art, can effectively reduce the wearing and tearing of biofilm carrier, prolong the life of filler, establish the cone structure into the reactor bottom simultaneously, aeration and the water distribution unit that is located between the interior urceolus of reactor bottom under the combined action that erodees, can further make the biofilm carrier mud in filler district and pending waste water carry out abundant mixture, fluidize, and then improve treatment effeciency.

Drawings

FIG. 1 is a structural view of a denitrification treatment reactor;

1. a water inlet pump; 2. a water inlet valve; 3. a water inlet flow meter; 4. an inner barrel; 5. a gas-collecting hood; 6. a gas pressure gauge; 7. a deflation valve; 8. an intake valve; 9. an air inlet pipeline is externally connected; 10. an air compressor; 11. a gas check valve; 12. a gas flow meter; 13. a microporous aeration pipe; 14. a first drain valve; 15. a second drain valve; 16. a drainage interception net; 17. a filler intercepting net; 18. A water outlet area; 19. a settling zone; 20. duckbill nozzle water distributor.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Examples

The utility model provides a denitrification treatment reactor, including inner tube 4, suit in the outside urceolus of inner tube 4 and urceolus bottom communicate, set up the clearance between the section of thick bamboo wall of the two, urceolus section of thick bamboo wall is less than the section of thick bamboo wall of inner tube 4, and the urceolus upper end is for opening the structure, 4 tops of inner tube are covered with gas collecting channel 5, for going out water zone 18 between the structure of opening of gas collecting channel 5 and urceolus, be equipped with the gas collecting pipeline between gas collecting channel 5 and the reactor bottom. And a gas flowmeter 12 is arranged on the gas collection pipeline. The gas flowmeter is arranged to adjust the flow rate by observing the gas flow rate.

The utility model discloses a device sets up the nested structure of interior urceolus, and urceolus upper end is for opening the structure, has covered with the gas collecting channel 5 on 4 tops of inner tube simultaneously, consequently can effectively collect the gas that denitrification self produced, can be used for the aeration treatment of denitrification treatment reactor with gas behind the gas collecting pipeline between gas collecting channel 5 and the reactor bottom.

Furthermore, the utility model discloses the denitrification's of device play water zone 18 is located the open structure of gas collecting channel 5 and urceolus between, and this region can form effectual water seal state when the operation to guarantee that gas collecting channel 5 can carry out efficient gas collection.

And a gas pressure gauge 6 and a gas release valve 7 are arranged on the gas collecting hood 5. The pressure in the gas collecting hood 5 can be monitored at any time by arranging the pressure gauge 6, and if the pressure exceeds the normal pressure, the air can be discharged and decompressed through the air discharge valve 7.

On the other hand, the utility model discloses between the urceolus including the setting of settling zone 19 of device, go out the setting of pool 18 between the open structure of gas collecting channel 5 and urceolus, consequently collect sewage treatment and mud-water separation in an organic whole, set up the sedimentation tank alone among the prior art and carry out mud-water separation and compare, have the advantage that reduces area, practice thrift the cost.

The reactor also comprises a water inlet area, an aeration unit and a water distribution unit, the gas collection pipeline is communicated with the aeration unit, the bottom of the reactor is of a cone structure, and the water distribution unit is arranged in the cone structure and is positioned between the inner cylinder 4 and the outer cylinder. The bottom of the reactor is arranged into a cone structure for the purposes of: when denitrification treatment is carried out, a small amount of filler and sludge rise to the settling zone 19, and the small amount of filler and sludge slide to the bottom of the reactor through a cone structure at the bottom and form a fluidized state again through aeration.

The district of intaking is including being connected to the inlet channel of reactor bottom, the inlet channel on be equipped with intake pump 1, water intaking valve 2 and inflow flowmeter 3, can adjust the inflow, effectively regulate and control waste water treatment's volume.

When the wastewater is treated, the wastewater is introduced to the bottom of the reactor through a water inlet pipeline, the denitrification treatment reaction is carried out in the filler area in the inner cylinder 4, the effluent is discharged in a water outlet area 18 after the reaction, and the mud and the water are separated in a settling area 19. The biological filler in the filler area and the wastewater to be treated are fully mixed and fluidized by the aeration of the aeration unit at the bottom of the reactor and the washing of the water distribution unit positioned between the inner cylinder and the outer cylinder, so that the treatment efficiency is improved. The aeration unit comprises uniformly distributed microporous aeration pipes 13. The water distribution unit includes duckbilled shower nozzle water-locator 20, can design the number of duckbilled shower nozzle water-locator according to actual conditions, and this embodiment sets up 4 ~ 8. Duckbill shower nozzle water-locator 20 can wash the mud and the filler of sedimentation zone to the reactor bottom, can set up duckbill shower nozzle water-locator 20 inclination and position as required during the in-service use to form better washing effect.

And the gas collection pipeline is provided with an air inlet valve 8, a gas check valve 11 and an air compressor 10. The air inlet source of the air compressor 10 is mainly gas generated by denitrification reaction, a proper amount of air is supplemented by regulating and controlling a gas valve of the air inlet valve 8, and an air outlet of the air compressor 10 is fixed at the bottom of the reactor and is connected with an aeration unit arranged at the bottom.

The reactor further comprises an external air inlet pipeline 9, the external air inlet pipeline 9 is communicated with an air compressor 10, and the external air inlet pipeline 9 has the functions of two aspects: 1) when the gas in the reactor is insufficient, the gas can be supplemented through an external gas inlet pipe to maintain the pressure balance of the reactor; 2) the denitrification process is completed under the anaerobic-anoxic condition, a proper amount of oxygen can be supplemented through the external air inlet pipe, the micro-aerobic condition is favorable for the reproduction of denitrifying bacteria, and the improvement of the concentration of the denitrifying bacteria in the reactor is facilitated

The outer side of the inner cylinder 4 of the reactor is provided with a filler interception net 17, and the filler interception net 17 limits the filler in a specific reaction area, thereby effectively solving the problems of filler loss and blockage. In addition, the bottom of the reactor is also provided with a drainage interception net 16, and when the reactor needs to be emptied, the drainage interception net 16 can be used for intercepting carriers/fillers in the reactor under the operation state of the device.

The bottom of the reactor is also provided with a first drain valve 14 and a second drain valve 15. The first drain valve 14 is a vent valve of the reactor, and plays roles of venting the reactor and discharging sludge during maintenance; the second drain valve 15 serves to trap the carrier/packing material within the reactor during the reactor service drain. The second drain valve 15 is normally closed and is opened for maintenance.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A denitrification fluidized bed denitrification treatment reactor is characterized in that: the reactor comprises an inner cylinder (4) and an outer cylinder sleeved outside the inner cylinder (4), wherein the inner cylinder (4) is communicated with the bottom of the outer cylinder, a gap is formed between the cylinder walls of the inner cylinder and the outer cylinder, the cylinder wall of the outer cylinder is lower than the cylinder wall of the inner cylinder (4), the upper end of the outer cylinder is of an open structure, a gas collecting hood (5) is covered at the top end of the inner cylinder (4), a water outlet area is formed between the gas collecting hood (5) and the open structure of the outer cylinder, and a gas collecting pipeline is arranged between the gas collecting hood (5).

2. The denitrification fluidized bed denitrification reactor of claim 1, wherein: the reactor also comprises a water inlet area, an aeration unit and a water distribution unit, the gas collection pipeline is communicated with the aeration unit, the bottom of the reactor is of a cone structure, and the water distribution unit is arranged in the cone structure and is positioned between the inner cylinder (4) and the outer cylinder.

3. The denitrification fluidized bed denitrification reactor according to claim 1 or 2, wherein: and a gas flowmeter (12) is arranged on the gas collection pipeline.

4. The denitrification fluidized bed denitrification reactor of claim 2, wherein: the water distribution unit comprises a duckbill spray head water distributor (20).

5. The denitrification fluidized bed denitrification reactor of claim 4, wherein: and the gas collecting pipeline is provided with an air inlet valve (8), an air compressor (10) and a gas check valve (11).

6. The denitrification fluidized bed denitrification reactor of claim 5, wherein: the reactor also comprises an external air inlet pipeline (9), and the external air inlet pipeline (9) is communicated with an air compressor (10).

7. The denitrification fluidized bed denitrification reactor according to claim 1 or 2, wherein: and a filler intercepting net (17) is arranged on the outer side of the inner cylinder (4).

8. The denitrification fluidized bed denitrification reactor of claim 2, wherein: the aeration unit comprises microporous aeration pipes (13) which are uniformly distributed.

9. The denitrification fluidized bed denitrification reactor of claim 4, wherein: the number of the duckbilled nozzle water distributors (20) is 4-8.

10. The denitrification fluidized bed denitrification reactor according to claim 1 or 2, wherein: the gas collecting hood (5) is also provided with a gas pressure gauge (6) and a deflation valve (7).