CN216336854U

CN216336854U - Photooxidation BNR device

Info

Publication number: CN216336854U
Application number: CN202122989017.2U
Authority: CN
Inventors: 王馨悦; 何曼妮; 骆坚平; 郭行; 潘涛
Original assignee: Beijing Longtao Environment Technology Co ltd
Current assignee: Beijing Longtao Environment Technology Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-19
Anticipated expiration: 2031-12-01

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a photooxidation BNR device which comprises a shell, wherein a transparent partition plate is horizontally arranged in the shell and divides the shell into an upper reaction zone and a lower reaction zone, a plurality of filler supporting rods are vertically arranged in the lower reaction zone, filler devices are uniformly arranged on the filler supporting rods from top to bottom, a nutrient solution conveying pipe is arranged at the upper part of the lower reaction zone in a penetrating manner, a plurality of spray heads are arranged on the nutrient solution conveying pipe and positioned above the uppermost filler device, an aerator pipe is arranged at the lower part of the lower reaction zone in a penetrating manner, and at least one halogen lamp is arranged in the upper reaction zone. Compared with the prior art, the utility model forms proper aerobic, anoxic and anaerobic environments by combining the aeration pipeline under the low-hydraulic non-illumination/illumination cyclic operation mode, completes the processes of reaction, precipitation, water drainage, sludge discharge and the like in the same reaction zone, has good denitrification and dephosphorization effects, reduces the operation cost and carbon emission, and has less aeration amount and low energy consumption.

Description

Photooxidation BNR device

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a photooxidation BNR device.

Background

With the industrial expansion and population growth, intensive agricultural activities excessively apply fertilizers, excessive nitrogen N and/or phosphorus P is released into a water environment, N and P which are more than can be accommodated by natural water bodies are discharged to cause water eutrophication, the balance of an aquatic ecosystem is broken, and the pollution to the environmental water bodies is aggravated. According to the regulations of the national environmental protection bureau, most of the current sewage treatment plants are faced with upgrading and reconstruction of the existing process so as to meet the requirements of national regulations.

Generally in the activated sludge process, carbon absorption and phosphorus release in the anaerobic section; heterotrophic denitrification and phosphorus absorption occur in the anoxic zone; the aerobic section is subjected to nitration reaction and phosphorus absorption. The biological nitrogen and phosphorus removal technology needs a large amount of oxygen supply, and in the upgrading and modification of a sewage treatment plant, AO or A2O is usually changed into the combination of surface aeration and bottom aeration, which accounts for about 60% of the energy cost of the sewage treatment plant.

The high-efficiency algae oxidation pond (HRAP) is a widely used technology for removing nutrient substances, has higher removal rate to COD, BOD5, ammonia nitrogen, total phosphorus, pathogens and the like, and simultaneously, the harvested high-grade stable pond sewage treatment technology aquatic plants are good fertilizers. However, it generally exhibits low sedimentation characteristics and the low hydraulic forces and sludge retention times applied do not allow the growth of nitrifying bacterial communities. In addition, shorter sludge retention times limit nitrification in wastewater at low C/N ratios.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies of the prior art, the present invention provides a photooxidative BNR device.

The technical scheme adopted by the utility model is as follows: photooxidation BNR device, the key lies in: the reactor comprises a housin, the casing midlevel is equipped with transparent baffle, transparent baffle will the casing is separated for last reaction zone and lower reaction zone, vertically in the reaction zone down be equipped with a plurality of branch of packing, evenly be equipped with the filler device down from last on the branch of packing, nutrient solution conveying pipe is worn to be equipped with on reaction zone upper portion down, be equipped with a plurality of shower nozzles on the nutrient solution conveying pipe, the shower nozzle is located the superiors filler device top, the aeration pipe is worn to be equipped with in the reaction zone lower part down, upward be equipped with at least one halogen lamp in the reaction zone. The scheme has the effects that a non-illumination/illumination mode can be circularly operated in the same reaction space, and aerobic, anoxic and anaerobic environments are formed, so that microalgae-bacteria consortia in the reactor can coordinate to realize nitrogen and phosphorus removal and negative carbon emission.

Preferably, a sludge outlet is formed in the bottom of the shell, a sludge hopper is arranged at the bottom of the lower reaction zone, and the sludge outlet is communicated with the sludge hopper. The effect of this scheme is can be with the mud that deposits in the sludge bucket through mud export discharge casing.

Preferably, the upper part of the lower reaction zone is provided with a sludge return port, the lower part of the lower reaction zone is provided with a sludge circulation port, and the sludge return port is communicated with the sludge circulation port through a circulation pump. The effect of this scheme is can form the backward flow, plays the stirring effect simultaneously, has improved oxygen transfer efficiency, has also reduced the energy consumption.

Preferably, the nutrient solution delivery pipe comprises a delivery main pipe and a plurality of annular branch pipes concentrically arranged, the annular branch pipes are arranged close to the transparent partition plate, and the spray heads are uniformly distributed on the annular branch pipes.

The effect of this scheme is that can be evenly sprayed nutrient solution on the filler.

Preferably, the aeration pipe comprises an aeration main pipe and a plurality of annular aeration branch pipes which are arranged in parallel from top to bottom, the circumference of each annular aeration branch pipe is gradually enlarged from top to bottom, and the annular aeration branch pipes are provided with air holes. The effect of this scheme is that aeration efficiency improves.

Preferably, the number of the halogen lamps is two, and the power of the two halogen lamps is 40W and 60W respectively. The effect of this scheme is that the sunshine radiation level can be better simulated.

Preferably, an argon pipe is arranged at the upper part of the lower reaction zone. The effect of this scheme is that an anaerobic environment can be formed in the casing.

Has the advantages that: compared with the prior art, the photo-oxygen BNR device provided by the utility model forms proper aerobic, anoxic and anaerobic environments by combining an aeration pipeline in a low-water-power non-illumination/illumination circulation operation mode, combines the non-oxygen-producing photosynthetic heterotrophic bacteria and the microalgae for use, completes the processes of reaction, precipitation, drainage, sludge discharge and the like in the same reaction zone, has good denitrification and dephosphorization effects, is low in C/N, furthest reduces the demand of adding COD (chemical oxygen demand), reduces the operation cost and carbon discharge of a sewage treatment plant, and is less in aeration amount and low in energy consumption.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a nutrient delivery tube;

fig. 3 is a schematic structural diagram of an aeration pipe.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, the photo-oxygen BNR device comprises a housing 1, wherein a transparent partition plate 2 is horizontally arranged in the housing 1, the housing 1 is divided into an upper reaction zone and a lower reaction zone by the transparent partition plate 2, a plurality of filler support rods 3 are vertically arranged in the lower reaction zone, the filler support rods 3 are uniformly provided with filler devices from top to bottom, a nutrient solution conveying pipe 5 penetrates through the upper part of the lower reaction zone, a plurality of spray heads 12 are arranged on the nutrient solution conveying pipe 5, the spray heads 12 are positioned above the uppermost layer of the filler devices, an aerator pipe 6 penetrates through the lower part of the lower reaction zone, the aerator pipe 6 is connected with an air blower, the nutrient solution conveying pipe 5 is connected with a nutrient solution feeding tank, a drain pipe penetrates through the upper part of the lower reaction zone, two halogen lamps 7 are arranged in the upper reaction zone, and the powers of the two halogen lamps 7 are respectively 40W and 60W; a sludge outlet 8 is formed in the bottom of the shell 1, a sludge hopper 9 is arranged at the bottom of the lower reaction zone, and the sludge outlet 8 is communicated with the sludge hopper 9; the upper part of the lower reaction zone is provided with a sludge return port 10, the lower part of the lower reaction zone is provided with a sludge circulation port 11, and the sludge return port 10 is communicated with the sludge circulation port 11 through a circulation pump; an argon pipe 13 and a water outlet pipe 14 are arranged at the upper part of the lower reaction zone in a penetrating way, and a water inlet pipe 15 is arranged at the lower part of the lower reaction zone in a penetrating way.

Example 2

As shown in fig. 1-3, the photooxidation BNR device comprises a housing 1, wherein a transparent partition plate 2 is horizontally arranged in the housing 1, the housing 1 is divided into an upper reaction zone and a lower reaction zone by the transparent partition plate 2, a plurality of filler support rods 3 are vertically arranged in the lower reaction zone, filler devices 4 are uniformly arranged on the filler support rods 3 from top to bottom, the filler devices are elastic fillers, a nutrient solution delivery pipe 5 is arranged at the upper part of the lower reaction zone in a penetrating manner, a plurality of spray heads 12 are arranged on the nutrient solution delivery pipe 5, the spray heads 12 are positioned above the filler devices at the uppermost layer, an aeration pipe 6 is arranged at the lower part of the lower reaction zone in a penetrating manner, the aeration pipe 6 is connected with a blower, the nutrient solution delivery pipe 5 is connected with a nutrient solution feeding tank, an argon gas pipe 13 and a water outlet pipe 14 are arranged at the upper part of the lower reaction zone in a penetrating manner, a water inlet pipe 15 is arranged at the lower part of the lower reaction zone, two halogen lamps 7 are arranged in the upper reaction zone, the power of the two halogen lamps 7 is 40W and 60W respectively; a sludge outlet 8 is formed in the bottom of the shell 1, a sludge hopper 9 is arranged at the bottom of the lower reaction zone, and the sludge outlet 8 is communicated with the sludge hopper 9; the upper part of the lower reaction zone is provided with a sludge return port 10, the lower part of the lower reaction zone is provided with a sludge circulation port 11, the sludge return port 10 and the sludge circulation port 11 are communicated through a circulation pump, and the halogen lamp 7, the circulation pump, the blower and the nutrient solution feeding tank are all electrically connected with a control system;

the nutrient solution conveying pipe 5 comprises a conveying main pipe 51 and a plurality of annular branch pipes 52 which are concentrically arranged, the annular branch pipes 52 are arranged close to the transparent partition plate 2, and the spray heads 12 are uniformly distributed on the annular branch pipes 52;

the aeration pipe 6 comprises an aeration main pipe 61 and a plurality of annular aeration branch pipes 62 which are arranged in parallel from top to bottom, the circumference of each annular aeration branch pipe 62 is gradually enlarged from top to bottom, and air holes are formed in the annular aeration branch pipes 62.

The working principle is as follows: by means of a control system, proper aerobic, anoxic and anaerobic environments and illumination modes are created, combined application of nitrification-denitrification, anaerobic ammonia oxidation and aerobic nitrification is achieved in the photooxidation BNR device, biochemical oxygen supply and carbon source adding amount are reduced to the maximum degree, and the effluent is guaranteed to reach the standard stably.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. Photooxidation BNR device, its characterized in that: including casing (1), the level is equipped with transparent baffle (2) in casing (1), transparent baffle (2) will casing (1) is separated for reaction zone and lower reaction zone, vertically in the reaction zone down be equipped with a plurality of branch (3) of packing, evenly be equipped with filler device (4) down from last on branch (3) of packing, reaction zone upper portion is worn to be equipped with nutrient solution conveying pipe (5) down, be equipped with a plurality of shower nozzles (12) on nutrient solution conveying pipe (5), shower nozzle (12) are located the superiors filler device (4) top, aeration pipe (6) are worn to be equipped with to reaction zone lower part down, upward be equipped with at least one halogen lamp (7) in the reaction zone.

2. The photo-oxygen BNR device according to claim 1, wherein: the sludge treatment device is characterized in that a sludge outlet (8) is formed in the bottom of the shell (1), a sludge hopper (9) is arranged at the bottom of the lower reaction zone, and the sludge outlet (8) is communicated with the sludge hopper (9).

3. The photo-oxygen BNR device according to claim 1, wherein: the upper part of the lower reaction zone is provided with a sludge return port (10), the lower part of the lower reaction zone is provided with a sludge circulation port (11), and the sludge return port (10) is communicated with the sludge circulation port (11) through a circulating pump.

4. The photo-oxygen BNR device according to claim 1, wherein: the nutrient solution conveying pipe (5) comprises a conveying main pipe (51) and a plurality of concentric annular branch pipes (52), the annular branch pipes (52) are arranged close to the transparent partition plate (2), and the spray heads (12) are uniformly distributed on the annular branch pipes (52).

5. The photo-oxygen BNR device according to claim 1, wherein: the aeration pipe (6) comprises an aeration main pipe (61) and a plurality of annular aeration branch pipes (62) which are arranged in parallel from top to bottom, the circumference of each annular aeration branch pipe (62) is gradually enlarged from top to bottom, and air holes are formed in the annular aeration branch pipes (62).

6. The photo-oxygen BNR device according to claim 1, wherein: the number of the halogen lamps (7) is two, and the power of the two halogen lamps (7) is 40W and 60W respectively.

7. The photo-oxygen BNR device according to claim 1, wherein: an argon pipe (13) is arranged at the upper part of the lower reaction zone in a penetrating way.