CN216890268U

CN216890268U - Activated carbon and ozone coupled sewage advanced treatment device

Info

Publication number: CN216890268U
Application number: CN202123321728.9U
Authority: CN
Inventors: 郭涵; 崔一尘; 李洋; 曾之俊; 侯晶晶; 吴一帆; 赵凯; 刘占丽
Original assignee: Beijing Bootes Electric Power Sci Tech Co ltd
Current assignee: Beijing Bootes Electric Power Sci Tech Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-05
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an activated carbon and ozone coupled sewage advanced treatment device, which comprises a pool body, an ozone generator, a pipe gallery structure and an ozone destruction device. The tank body comprises an ozone area, a sewage area and an active carbon adsorption catalysis area which are distributed at intervals. The pipe gallery structure comprises an air inlet pipeline, an air outlet pipeline, a water inlet pipeline and a water outlet pipeline. The ozone generator is connected with the ozone inlet main pipeline and is dispersed into the tank body by branch pipes. The waste water is connected with the water inlet main pipe and is provided with a switch valve. The tail gas after the ozone reaction is converged into the ozone tail gas destruction device. The utility model has the advantages that: the ozone online regeneration system has the advantages of low cost, high efficiency, simple design and compact structure, ensures sufficient retention time of ozone in the system, simultaneously improves the dissolution rate of ozone due to the catalytic effect of the activated carbon, and can simultaneously perform online regeneration on the activated carbon in the degradation process of the ozone. The whole system ensures the uniform distribution and contact reaction among the ozone, the active carbon and the biochemical wastewater, and further improves the degradation and utilization rate of the ozone.

Description

Activated carbon and ozone coupled sewage advanced treatment device

Technical Field

The utility model belongs to the field of industrial sewage treatment equipment, and particularly relates to an activated carbon and ozone coupled sewage advanced treatment device.

Background

The ozone oxidation method is to oxidize and decompose pollutants in the wastewater based on the self-oxidation performance and simultaneously perform deodorization, sterilization and decoloration. The degradation mechanism of ozone to pollutants is divided into two types: the first is direct oxidation, that is, ozone and soluble organic matters are subjected to direct oxidation reaction in a molecular form, and the organic matters are oxidized into simple organic matters such as carboxylic acid and the like, or directly oxidized into carbon dioxide and water; the second is indirect oxidation, ozone is rapidly decomposed into intermediate products such as OH and the like under the conditions of light, a catalyst, alkalinity and the like, and the intermediate products oxidize organic matters. The ozone oxidation method is a typical process in the sewage physical and chemical treatment technology.

Activated carbon is a very fine carbon particle. Has large specific surface area and finer pores, namely capillaries, in the carbon granules. The capillary tube has strong adsorption capacity and can be fully contacted with gas. In addition, activated carbon is accompanied by catalytic reactions in many adsorption processes, and exhibits catalytic activity.

Chinese patent application No. CN201420402154.9 discloses a decolorization device for adsorbing chromaticity of pesticide wastewater by ozone/activated carbon catalytic oxidation, which further oxidizes the wastewater and recovers the oxidation performance of ozone by arranging an activated carbon region. However, this device has the following problems: 1. the arrangement of the activated carbon is centralized, so that the adsorption and the body regeneration of pollutants are not facilitated; 2. the consumption of the active carbon is large, and the cost is high.

At present, the catalytic ozonation method is widely applied to sewage treatment, and compared with the traditional catalytic ozonation method, the catalytic ozonation method enables ozone to be fully generated into OH by adding a catalyst, so that the removal effect and the mineralization rate of a polluted area are enhanced.

However, the ozone oxidation method still faces the following problems: 1. the ozone dissolution rate is low, and the utilization effect is poor; 2. the actual operation requirement is strict; 3. in order to improve the degradation rate of pollutants, a large amount of ozone and a catalyst need to be added, so that the cost is high and the energy consumption is high; 4. the ozone dissolving effect is not ideal, and the catalyst is not easy to recover; 5. secondary pollution, such as adsorption-saturated activated carbon as waste, requires high disposal costs.

In conclusion, the fine pore structure of the activated carbon can store and release ozone, so that the retention time of the ozone in the whole reaction system is prolonged. Thereby effectively improving the utilization rate of the ozone. The activated carbon can adsorb ozone and pollutants and also provides a large number of places for efficient degradation of the pollutants. Ozone can be used for on-line regeneration of the active carbon, so that the active carbon has continuous adsorption capacity. Therefore, it is necessary to provide an activated carbon-ozone coupled advanced wastewater treatment device.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an activated carbon-ozone coupled sewage advanced treatment device so as to improve the ozone utilization rate and overcome the problem of catalyst recycling performance.

The above object of the present invention is achieved by the following technical solutions: comprises a pool body, a pipe gallery structure, an ozone generator, an active carbon net-shaped fixing frame device, an active carbon filler and an ozone destruction device.

The tank body comprises an ozone gas distribution area, a wastewater area and an activated carbon adsorption catalysis area which are distributed at intervals. Furthermore, the ozone zone and the wastewater treatment system are connected and distributed at intervals in the tank body, so that the full utilization of ozone is ensured, and the efficient treatment effect of wastewater is further ensured.

The active carbon net-shaped fixing frame device is arranged in the reaction tank body, and active carbon filler is filled in the active carbon net-shaped fixing frame, so that the active carbon is uniformly distributed and stably runs without loss.

The pipe gallery structure comprises a biochemical wastewater inlet pipe, a water outlet pipe after the biochemical wastewater inlet pipe and the reactor are treated, an ozone inlet pipe and an ozone tail gas pipe.

Biochemical waste water inlet pipe sets up main valve and each branch valve, and each pipeline of going out water after the processing sets up suction pump and valve, can guarantee that the cell body goes out water stably.

The adjustable gas flowmeter is arranged on the pipeline of the ozone inlet device, so that the uniform and stable supply of ozone to the pool body can be ensured.

Furthermore, ozone enters the ozone destruction device through the air outlet pipeline after oxidation reaction, so that the ozone can be prevented from entering the environment and damaging the atmosphere.

In summary, the present invention has the following advantages.

(1) The reaction is carried out in different areas, and the ozone, the active carbon and the biochemical wastewater are uniformly distributed and fully contacted.

(2) The degradation process of the ozone can simultaneously carry out on-line regeneration on the activated carbon, so that the activated carbon has continuous adsorption capacity.

(3) The sufficient retention time of the ozone in the system is ensured, and simultaneously, the catalytic effect of the activated carbon can improve the dissolution rate of the ozone.

(4) The device avoids ozone jet entering a reaction system and the input of a large amount of ozone and a catalyst, and has the advantages of low cost, high efficiency, simple design, compact structure and stable effluent quality.

(5) The utility model combines ozone catalytic oxidation and activated carbon adsorption technologies, fully utilizes the adsorption performance of activated carbon, diffuses and adsorbs organic matters in concentrated water into the microporous structure of the activated carbon, and then strong oxidation intermediates such as hydroxyl radicals and the like generated by ozone catalytic oxidation can efficiently degrade organic pollutants in the microporous structure of the activated carbon. The ozone catalytic oxidation enhanced activated carbon adsorption can play a good synergistic effect, and the adsorption efficiency of the activated carbon and the advanced treatment efficiency of the wastewater are improved.

Drawings

FIG. 1 is a schematic structural diagram of an activated carbon-ozone coupled sewage advanced treatment device of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in the following with reference to the accompanying drawings in the embodiments of the present invention.

As shown in figure 1, the utility model discloses an activated carbon and ozone coupled sewage advanced treatment device, which is characterized in that: the advanced wastewater treatment device comprises a tank body 1, biochemical wastewater 8, an ozone generator 4, a pipe gallery structure and an ozone tail gas destruction device 20. The tank body comprises an ozone gas distribution area 3, a wastewater area 2 and an active carbon adsorption catalysis area which are distributed at intervals. The ozone inlet system and the wastewater inlet system are connected and distributed at intervals in the tank body. After the ozone reaction, the ozone is converged from the upper branch of the tank body and enters the ozone tail gas destruction device 20. The treated wastewater is converged to the water outlet through the water suction pump through each branch.

The pipe gallery structure mainly comprises an air inlet pipeline, an air outlet pipeline, an air inlet pipeline and an water outlet pipeline. Ozone generator 4 links to each other with ozone main pipe 5 that admits air, and adjustable gas flowmeter 6 settles on ozone main pipe 5 that admits air, and ozone main pipe 5 that admits air links to each other with ozone inlet branch 7, and ozone inlet branch 7 links to each other with the cell body, guarantees that stable even gas distribution of ozone. The biochemical wastewater 8 is connected with the main water inlet pipe 10, and the switch valve 9 is arranged on the main water inlet pipe 10 and the branch water inlet pipe 11, so that uniform water distribution can be ensured. After the ozone reaction, the tail gas is gathered through the tail gas branch pipe 18 and enters the ozone tail gas main pipe 19, and finally enters the ozone tail gas damage device 20. The treated wastewater is gathered to the main water outlet pipe 15 through the wastewater outlet branch pipe 17 by the water suction pump 16 and then flows out from the water outlet 14.

The active carbon adsorption catalysis area comprises an active carbon net-shaped fixing frame device 12 and an active carbon filler 13. The activated carbon filler 13 is uniformly filled into the inside of the activated carbon mesh-shaped fixing frame device 12. The ozone gas distribution area 3 and the waste water area 2 are respectively arranged on two sides of the activated carbon filler 13.

The device comprises the following specific processes: biochemical wastewater 8 enters the water inlet branch pipe 11 through the water inlet main pipe 10 and then is uniformly distributed in the tank body. The ozone generator 4 is connected with an ozone inlet main pipeline 5 and enters the inside of the tank body through an adjustable gas flowmeter and an ozone inlet branch pipe 7. Ozone and sewage are distributed in the tank body at intervals. The activated carbon filler 13 is uniformly filled into the inside of the activated carbon mesh-shaped fixing frame device 12. The ozone gas distribution area 3 and the waste water area 2 are respectively arranged on two sides of the activated carbon filler 13. After ozone enters a reaction system and is stabilized, biochemical sewage enters a tank body, the ozone passes through activated carbon and reacts with pollutants in the sewage, and the reaction mechanism at the moment mainly comprises that the pollutants in the sewage enter an activated carbon pore structure, and the pollutants are degraded and oxidized by the ozone in the pore structure; the activated carbon catalyzes ozone to generate intermediate products with better degradation performance, such as OH and the like, and the intermediate products oxidize and degrade pollutants; meanwhile, the unique capillary pore structure of the activated carbon has the functions of storing and releasing ozone, the retention time of the ozone in the system is longer, and the degradation effect on pollutants is better. The biochemical wastewater 8 is connected with the main water inlet pipe 10, and the switch valve 9 is arranged on the main water inlet pipe 10 and the branch water inlet pipe 11, so that uniform water distribution can be ensured. After the ozone reaction, the tail gas is gathered through a tail gas branch pipe 18 and enters an ozone tail gas main pipe 19, and finally enters an ozone tail gas damage device 20. The treated wastewater is gathered to the main water outlet pipe 15 through the wastewater outlet branch pipe 17 by the water suction pump 16 and then flows out from the water outlet 14.

The utility model has the advantages that: the cost is low, the efficiency is high, the design is simple, the structure is compact, and the effluent quality is stable; the sufficient retention time of the ozone in the system is ensured, and meanwhile, the oxidation capacity of the ozone can be increased through catalysis by the activated carbon, so that the utilization rate of the ozone is improved; the degradation process of the ozone can simultaneously carry out on-line regeneration on the activated carbon, so that the activated carbon has continuous adsorption capacity; the uniform distribution and contact reaction among the ozone, the active carbon and the biochemical wastewater are ensured, and the degradation and utilization rate of the ozone are further improved.

The above description is only for the purpose of illustrating the embodiments of the present invention, and the scope of the present invention is not limited thereto, so that any modification or change made within the spirit of the present invention should fall within the intended scope of the present invention.

Claims

1. The utility model provides an active carbon and ozone coupling sewage advanced treatment unit which characterized in that includes: cell body (1), biochemical waste water (8), ozone generator (4), the piping lane structure, active carbon adsorption catalysis district and ozone tail gas destruction device (20), the piping lane structure mainly includes admission line, the pipeline of giving vent to anger, inlet channel and outlet conduit, ozone generator (4) link to each other with ozone inlet main pipe (5), ozone inlet main pipe (5) link to each other with ozone inlet branch pipe (7), ozone inlet branch pipe (7) link to each other with the cell body, guarantee the stable even gas distribution of ozone, biochemical waste water (8) link to each other with inlet main pipe (10), ooze valve (9) and settle on inlet main pipe (10) and inlet branch pipe (11), can guarantee even water distribution, the tail gas after the ozone reaction assembles entering ozone tail gas main pipe (19) through tail gas branch pipe (18), finally assemble ozone tail gas destruction device (20), the waste water after the processing flows from delivery port (14) after wastewater assembles to outlet main pipe (15) through water suction pump (16) through waste water branch pipe (17) And (6) discharging.

2. The activated carbon and ozone coupled advanced wastewater treatment device of claim 1, wherein: the pool body (1) comprises an ozone area (3), a waste water area (2) and an active carbon adsorption catalysis area which are distributed at intervals.

3. The activated carbon and ozone coupled advanced wastewater treatment device as claimed in claim 2, wherein: activated carbon filler (13) in the activated carbon adsorption catalysis district evenly fills in inside activated carbon net mount device (12), and activated carbon adsorption catalysis district both sides are ozone district (3) and waste water district (2) respectively.

4. The activated carbon and ozone coupled advanced wastewater treatment device of claim 1, wherein: the pipe gallery structure comprises an ozone air inlet and outlet pipeline and a sewage water inlet and outlet pipeline.

5. The activated carbon and ozone coupled advanced wastewater treatment device of claim 4, wherein: ozone inlet and outlet pipe says and sets up a plurality of ozone inlet branch pipe (7) and tail gas branch pipe (18), and ozone inlet main pipeline (5) set up adjustable gas flowmeter (6), and ozone tail gas assembles back entering ozone tail gas damage device (20).

6. The activated carbon and ozone coupled advanced wastewater treatment device of claim 4, wherein: the sewage inlet and outlet pipeline is provided with a plurality of water inlet branch pipes (11) and a plurality of waste water outlet branch pipes (17).