CN213771765U

CN213771765U - Catalytic ozone device for treating industrial wastewater

Info

Publication number: CN213771765U
Application number: CN202022793697.6U
Authority: CN
Inventors: 刘伟; 马素婷; 孙鑫; 胡桂兰; 张玉国; 张阳; 杨永涛
Original assignee: Beijing Hui Qing Yuan Water Business Scientific Co ltd
Current assignee: Beijing Hui Qing Yuan Water Business Scientific Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-23
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to a handle industrial waste water's catalysis ozone device, include the wastewater disposal basin that communicates through the pipeline order in proper order, one-level catalysis ozone device, second grade catalysis ozone device and bological aerated filter and ozone generator and ozone tail gas destructor, ozone generator's ozone export is respectively through the ozone entry of exhaust pipe connection one-level catalysis ozone device and second grade catalysis ozone device, ozone tail gas destructor's tail gas entry is respectively through the exhaust port of pipe connection one-level catalysis ozone device and second grade catalysis ozone device, ozone tail gas destructor's gas outlet passes through during the leading-in bological aerated filter of pipeline, the inside ozone catalyst of one-level catalysis ozone device and second grade catalysis ozone device is different. The advantages are that: the two types of efficient fillers are adopted to replace the existing single type fillers, so that the functions are effectively divided, the problem of waste of tail gas resources is effectively solved by recycling the ozone tail gas, and the investment cost and the operation cost of the system are effectively reduced.

Description

Catalytic ozone device for treating industrial wastewater

Technical Field

The utility model relates to the technical field of industrial wastewater treatment, in particular to a catalytic ozone device for treating industrial wastewater.

Background

Under strict national environmental protection policies and scientific treatment methods, the total amount of industrial wastewater discharged in China tends to decrease year by year, but the total amount of industrial wastewater discharged still occupies a large proportion in environmental pollution. The effective degradation of organic pollutants in the wastewater is still one of the difficult problems in the treatment of industrial wastewater. In recent years, the catalytic ozone technology is applied more and more widely in industrial wastewater treatment, on one hand, ozone can convert organic substances which are difficult to degrade into substances which are easy to degrade and absorb, and the biochemical property of a system is improved; on the other hand, under the action of the catalyst, the utilization efficiency of the ozone can be greatly improved, and the removal effect of organic matters is further improved.

In the existing process for treating wastewater by catalytic oxidation, a single heterogeneous catalyst is adopted as a catalyst filler, and ozone tail gas is directly discharged after being treated by an ozone tail gas destructor. In addition, the catalytic ozone stage of the existing device is divided into a catalytic oxidation tower and a catalytic oxidation tank, the using amount of a catalyst is large, the investment cost is increased, meanwhile, the ozone tail gas cannot be effectively utilized, the resource waste is caused, and the overall operation cost of the system is also increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a catalytic ozone device for treating industrial wastewater, which effectively overcomes the defects of the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a catalytic ozone device for treating industrial wastewater comprises a wastewater pool, a primary catalytic ozone device, a secondary catalytic ozone device, a biological aerated filter, an ozone generator and an ozone tail gas destructor which are sequentially communicated through pipelines, wherein an ozone outlet of the ozone generator is respectively connected with ozone inlets of the primary catalytic ozone device and the secondary catalytic ozone device through exhaust pipelines, a tail gas inlet of the ozone tail gas destructor is respectively connected with tail gas discharge ports of the primary catalytic ozone device and the secondary catalytic ozone device through pipelines, a gas outlet of the ozone tail gas destructor is led into the biological aerated filter through a pipeline, and ozone catalysts in the primary catalytic ozone device and the secondary catalytic ozone device are different.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the ozone catalyst is a porous inorganic material-supported catalyst.

Further, the ozone catalyst in the first-stage catalytic ozone device and the second-stage catalytic ozone device is one of manganese metal loaded ceramsite, iron metal loaded ceramsite or metal loaded activated carbon particle.

Further, a supercharging device is connected to the exhaust pipeline.

Further, the gas supply system also comprises a standby gas supply system, and the standby gas supply system is connected with the exhaust pipeline.

Furthermore, the ozone inlets of the first-stage catalytic ozone device and the second-stage catalytic ozone device are respectively provided with a control valve.

Further, the biological aerated filter also comprises a water outlet pool, and a water outlet of the biological aerated filter is connected with the water outlet pool through a pipeline.

Furthermore, a pump set and a valve are arranged on a pipeline connecting the wastewater tank and the primary catalytic ozone device.

The utility model has the advantages that: the two types of efficient fillers are adopted to replace the existing single type fillers, so that the functions are effectively divided, the problem of waste of tail gas resources is effectively solved by recycling the ozone tail gas, and the investment cost and the operation cost of a system are effectively reduced.

Drawings

FIG. 1 is a schematic structural diagram of a catalytic ozone device for treating industrial wastewater according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a wastewater tank; 2. a primary catalytic ozone unit; 3. a secondary catalytic ozone unit; 4. an aeration biological filter; 5. an ozone generator; 6. an ozone tail gas destructor; 7. a pressure boosting device; 8. a water outlet pool; 9. and a pump group.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example (b): as shown in fig. 1, the catalytic ozone apparatus for treating industrial wastewater of the present embodiment includes a wastewater tank 1, a primary catalytic ozone apparatus 2, a secondary catalytic ozone apparatus 3, a biological aerated filter 4, an ozone generator 5 and an ozone tail gas destructor 6 sequentially connected by pipelines, wherein an ozone outlet of the ozone generator 5 is connected to ozone inlets of the primary catalytic ozone apparatus 2 and the secondary catalytic ozone apparatus 3 by exhaust pipelines, respectively, a tail gas inlet of the ozone tail gas destructor 6 is connected to tail gas discharge ports of the primary catalytic ozone apparatus 2 and the secondary catalytic ozone apparatus 3 by pipelines, respectively, a gas outlet of the ozone tail gas destructor 6 is introduced into the biological aerated filter 4 by pipelines, and ozone catalysts in the primary catalytic ozone apparatus 2 and the secondary catalytic ozone apparatus 3 are different.

The treatment process is as follows:

the waste water difficult to degrade or the effluent of a biochemical system is conveyed into a waste water tank 1 and then enters a first-stage catalytic ozone device 2, the effluent treated by the first-stage catalytic ozone device enters a second-stage catalytic ozone device 3, the effluent treated by the first-stage catalytic ozone device enters an aeration biological filter 4, the effluent is treated by the aeration biological filter 4 and is discharged after reaching the standard, in the process, an ozone generator 5 provides ozone into the two-stage catalytic ozone device to ensure that the ozone is fully contacted with the waste water, further, organic substances difficult to degrade in the waste water are converted into substances easy to degrade and absorb, an ozone catalyst in each-stage catalytic ozone device can accelerate the oxidation reaction of the ozone and the organic substances difficult to degrade, and the tail gas discharged by the two-stage catalytic ozone device is treated by a tail gas destructor 6 and then is guided into the aeration biological filter 4 to supplement oxygen for the aeration biological filter 4, thereby ensuring the effective deep treatment of the sewage in the process, whole device structural design is reasonable, has following advantage: 1) two types of high-efficiency fillers are adopted to replace the existing single type fillers, so that the effective division of functions is realized; 2) the recycling of the ozone tail gas effectively solves the problem of waste of tail gas resources; 3) the recovery of the ozone tail gas can effectively reduce the investment cost and the operation cost of the system.

It should be added that: if the suspended solids in the wastewater are more, a multi-media filter can be additionally arranged on a pipeline at the front end of the catalytic ozone reaction so as to reduce the consumption of the ozone at the rear end.

Preferably, the ozone catalyst is a porous inorganic material supported catalyst with a particle size of 3-5mm and a specific surface area of 220-320m²The volume ratio of the mixture to the solid phase is 0.4-0.6 ml/g.

Specifically, the ozone catalyst in the primary catalytic ozone device 2 and the secondary catalytic ozone device 3 is one of a manganese metal-loaded ceramsite, an iron metal-loaded ceramsite or a metal-loaded activated carbon particle.

Preferably, a pressure increasing device 7 is connected to the exhaust pipeline, and the pressure increasing device 7 can ensure that the treated tail gas enters the biological aerated filter 4 at proper pressure to supplement oxygen.

The exhaust pipeline can be connected with an aeration device in the biological aerated filter 4 or can be independently connected with an adaptive aeration device.

The rotary flowmeter (10 a in the figure) is connected to the rear end of the supercharging device 7 (namely one end of the same-direction biological aerated filter 4) on the exhaust pipeline.

Preferably, the system further comprises a standby gas supply system, wherein the standby gas supply system is connected with the exhaust pipeline, and the standby gas supply system is used for supplementing by opening the standby gas supply system when the pressure of the tail gas is insufficient (the amount of the tail gas is insufficient), so that the recovered gas can be well introduced into the biological aerated filter 4.

Preferably, the ozone inlets of the first catalytic ozone device 2 and the second catalytic ozone device 3 are both provided with control valves, for example, in the figure, the first catalytic ozone device 2 corresponds to the control valve 2a, and the second catalytic ozone device 3 corresponds to the control valve 3b, and the control valves can adjust the ozone amount entering the two-stage catalytic ozone device respectively, so that the two-stage catalytic ozone device is in the optimal oxidation treatment state.

Preferably, the biological aerated filter further comprises a water outlet pool 8, and the water outlet of the biological aerated filter 4 is connected with the water outlet pool 8 through a pipeline.

In the scheme, the water outlet pool 8 can buffer the finally treated water, the staff can conveniently perform final detection and identification at the water outlet pool 8, and the effluent quality reaches the standard and is discharged.

Preferably, a pump set 9 and a valve are arranged on a pipeline connecting the wastewater tank 1 and the primary catalytic ozone device 2, the valve can adjust the output flow of wastewater, and the pump set 9 can smoothly pump and convey the wastewater into a subsequent treatment device.

It should be added that: the inside of each stage of catalytic ozone treatment device is divided into an air-water mixing area, a bearing water distribution plate, a metal ion supported catalyst layer, a metal mesh and a water outlet weir from bottom to top, wherein the water inlet end of the first stage of catalytic ozone device 2 is positioned at the air-water mixing area, the water outlet weir of the first stage of catalytic ozone device 2 is communicated with the water inlet end of the second stage of catalytic ozone device through a pipeline, the steel mesh is an SS316L steel mesh with the specification of 10-20 meshes, the bearing water distribution plate is an SS316L steel plate or a cement plate, and an SS316L filter head is installed on the plate.

The tail gas inlet of the ozone tail gas destructor 6 is connected with a main pipe, the tail gas discharge ports of the primary catalytic ozone device 2 and the secondary catalytic ozone device 3 are respectively communicated with the main pipe through branch pipes, and the branch pipes are respectively provided with one-way valves (2c and 3c) to prevent the backflow of the tail gas.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A catalytic ozone device for treating industrial wastewater is characterized in that: comprises a wastewater tank (1), a primary catalytic ozone device (2), a secondary catalytic ozone device (3), an aeration biological filter (4), an ozone generator (5) and an ozone tail gas destructor (6) which are sequentially communicated through pipelines, the ozone outlet of the ozone generator (5) is respectively connected with the ozone inlets of the primary catalytic ozone device (2) and the secondary catalytic ozone device (3) through exhaust pipelines, the tail gas inlet of the ozone tail gas destructor (6) is respectively connected with the tail gas discharge ports of the primary catalytic ozone device (2) and the secondary catalytic ozone device (3) through pipelines, the gas outlet of the ozone tail gas destructor (6) is led into the biological aerated filter (4) through a pipeline, the ozone catalyst in the primary catalytic ozone device (2) is different from that in the secondary catalytic ozone device (3).

2. The catalytic ozone unit for treating industrial wastewater according to claim 1, wherein: the ozone catalyst is a porous inorganic material supported catalyst with the particle size of 3-5 mm.

3. A catalytic ozone unit for treating industrial waste water according to claim 2, characterised in that: the ozone catalysts in the primary catalytic ozone device (2) and the secondary catalytic ozone device (3) are respectively one of manganese metal loaded ceramsite, iron metal loaded ceramsite or metal loaded activated carbon particle.

4. The catalytic ozone unit for treating industrial wastewater according to claim 1, wherein: and the exhaust pipeline is connected with a supercharging device (7).

5. The catalytic ozone unit for treating industrial wastewater according to claim 4, wherein: still include reserve gas supply system, reserve gas supply system with exhaust pipe connects.

6. A catalytic ozone unit for treating industrial waste water according to any one of claims 1 to 5 characterised in that: and control valves are arranged at ozone inlets of the primary catalytic ozone device (2) and the secondary catalytic ozone device (3).

7. A catalytic ozone unit for treating industrial waste water according to any one of claims 1 to 5 characterised in that: the biological aerated filter also comprises a water outlet pool (8), and a water outlet of the biological aerated filter (4) is connected with the water outlet pool (8) through a pipeline.

8. A catalytic ozone unit for treating industrial waste water according to any one of claims 1 to 5 characterised in that: and a pump set (9) and a valve are arranged on a pipeline connecting the wastewater tank (1) and the primary catalytic ozone device (2).