CN219252128U

CN219252128U - Waste gas treatment system

Info

Publication number: CN219252128U
Application number: CN202320786458.9U
Authority: CN
Inventors: 申志杰; 周文华; 刘伟民; 何浩; 徐露珊; 王洪政; 刘新堂; 罗灿钰
Original assignee: Zhongquan Wanhui Environmental Technology Co ltd
Current assignee: Zhongquan Wanhui Environmental Technology Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-27
Anticipated expiration: 2033-04-11

Abstract

The utility model provides an exhaust gas treatment system, which comprises a washing area, a filtering area and an illumination area which are sequentially communicated, wherein the washing area comprises a washing and purifying chamber, the washing and purifying chamber is communicated with an air duct, and a first detection unit is arranged in the air duct; the top of the washing and purifying chamber is provided with a plurality of first atomization spray heads, the bottom of the washing and purifying chamber is provided with a water collecting tank, and the plurality of first atomization spray heads are communicated with the water collecting tank; the filtering area comprises a filtering purifying chamber, the filtering purifying chamber comprises a plurality of second atomizing spray heads and a filling wall, the second atomizing spray heads are also communicated with the dosing unit, and the filling wall is used for separating the filtering area from the illumination area; the illumination area comprises a photolysis chamber, the photolysis chamber comprises a plurality of ultraviolet lamp tubes and an air outlet communicated with the outside, the air outlet is further provided with a second detection unit, and the first detection unit and the second detection unit are respectively connected with the control cabinet through electric signals. The method aims at realizing the directional removal of particulate matters, oil smoke and VOCs, and further improving the treatment efficiency of waste gas.

Description

Waste gas treatment system

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment system.

Background

At present, the chilli-based seasoning is prepared by adding dry chilli into other seasonings such as pepper, meat, fermented soya beans and the like and adding the seasonings into high-temperature edible oil for stir-frying, and the oil chilli product contains rich nutrient components such as various essential amino acids, vitamins and the like of human bodies, and is deeply favored by people due to the unique flavor of the oil chilli. However, the oil capsicum products can generate a certain amount of grease, organic matters and a mixture formed by thermal cracking and thermal oxidation of the grease and the organic matters in the frying process, and mainly consist of particles and gaseous pollutants, so that certain negative influence is generated on the environment to a certain extent.

Whereas the utility model of the prior patent publication No. CN215196060U discloses an exhaust gas treatment device comprising: the treatment device comprises a treatment box, a spraying system and an exhaust pipe, wherein a cavity is formed in the treatment box, the bottom of the cavity is used for containing first liquid, the first liquid is used for separating the oil fume, the spraying system is arranged in the cavity and is used for spraying second liquid, and the exhaust pipe is communicated with the cavity; the air guide device comprises an air guide pipe, an air inlet end of the air guide pipe is arranged outside the treatment box, and an air outlet end of the air guide pipe is arranged in the cavity and is separated from the liquid level of the first liquid by a preset distance d; the driving assembly is used for driving the oil smoke-containing waste gas to enter the cavity and the oil discharging device comprises an oil discharging pipe and is used for discharging separated oil stains. Although the waste gas treatment device can avoid oil dirt accumulation in the waste gas treatment device, the waste gas is not removed aiming at other VOCS, and the discharged waste gas still has a certain harm to the environment and the human health, so the waste gas generated in the production of the chilli seasoning still needs to be deeply purified and then discharged.

Disclosure of Invention

The utility model mainly aims to provide an exhaust gas treatment system which aims to solve the problem that the existing device is poor in exhaust gas treatment effect.

In order to achieve the above object, the present utility model provides an exhaust gas treatment system, wherein the system comprises a receiving chamber for treating exhaust gas, the receiving chamber comprising a washing zone, a filtering zone and an illumination zone which are sequentially communicated;

the washing area comprises a washing purification chamber, the washing purification chamber is communicated with an air duct, the air duct is used for collecting waste gas and introducing the waste gas into the washing purification chamber, a first detection unit is further arranged in the air duct, and the first detection unit is used for monitoring the concentration of Volatile Organic Compounds (VOCs) in the waste gas in the air duct in real time;

the top of the washing purification chamber is provided with a plurality of first atomization spray heads, the bottom of the washing purification chamber is provided with a water collecting tank corresponding to the first atomization spray heads, and the first atomization spray heads are communicated with the water collecting tank;

the filtering area comprises a filtering purifying chamber, the filtering purifying chamber comprises a plurality of second atomizing spray heads and a filling wall opposite to the second atomizing spray heads, the second atomizing spray heads are also communicated with the dosing unit, and the filling wall is used for separating the filtering area from the illumination area;

the illumination area comprises a photolysis chamber, the photolysis chamber comprises a plurality of ultraviolet lamp tubes and an air outlet communicated with the outside, a second detection unit is further arranged at the air outlet and used for monitoring the concentration of VOCs in the treated waste gas, and the first detection unit and the second detection unit are respectively connected with a control cabinet through electric signals.

Optionally, the water collection tank is connected with the plurality of first atomizer heads through a first centrifugal pump, a first filter and a first ball valve.

Optionally, the first atomizing nozzles are staggered in rows and columns.

Optionally, the filler wall bottom sets up in the header tank, still be provided with detection probe in the header tank, detection probe still through the switch board with add medicine unit electrical signal connection, detection probe is used for detecting pH value in the header tank and transmission to in the switch board.

Optionally, the water collection tank is connected with a plurality of second atomizer heads through a second centrifugal pump, a second filter and a second ball valve.

Optionally, the dosing unit includes dosing pump, third ball valve, dosing barrel and setting are in agitator in the dosing barrel, the dosing pump with the header tank is connected and with the switch board electrical signal connection.

Optionally, the filler wall comprises an internal honeycomb structure.

Optionally, the ultraviolet lamps are staggered in rows and columns; and the plurality of ultraviolet lamp tubes are electrically connected with the control cabinet.

Optionally, a first ball float valve is arranged in the water collecting tank, the first ball float valve is in electrical signal connection with the control cabinet, and the first ball float valve is used for detecting a water level signal of the water collecting tank;

the water collection tank is internally provided with a second ball float valve which is electrically connected with the control cabinet and is used for detecting a water level signal of the water collection tank;

the water collecting tank is connected with the water storage tank through a clear water supply pump respectively, and the clear water supply pump is used for starting or closing according to water level signals of the first ball float valve and/or the second ball float valve transmitted by the control cabinet.

Optionally, an exhaust fan is further arranged at the joint of the washing purification chamber and the air duct.

The beneficial effects are that:

the utility model provides an exhaust gas treatment system, which is characterized in that a containing cavity for treating exhaust gas comprises a washing area, a filtering area and an illumination area which are sequentially communicated; the washing area is provided with a plurality of corresponding first atomization spray heads at the top of the washing purification chamber, so that the first atomization spray heads are used for spraying the whole washing purification chamber in a full-coverage mode, and then the sprayed clean water can adsorb particle impurities and part of oil smoke in waste gas, a corresponding water collecting tank is arranged at the bottom of the washing purification chamber, circulation operation between the water collecting tank and the first atomization spray heads is controlled, and further the efficiency of removing the particle impurities and part of oil smoke in the waste gas is further improved.

And set up a plurality of second atomizer, filler wall and dosing unit in the filtration district, and then realize spraying in the filler wall under the effect of second atomizer through the chemical agent in the dosing unit, and then react with the waste gas in the filtration district, in order to realize adsorbing oil smoke in the waste gas, small particle matter and aerosol, realize efficient filtering effect, and further realize carrying out molecular chain degradation and strong oxidation sterilization treatment to organic matter in the gas after straining through the illumination of ultraviolet fluorescent tube, and then wash the district that sets up in this system, filtration district and illumination district have realized getting rid of particulate matter, oil smoke and VOCs's orientation, and then improve exhaust treatment efficiency.

In addition, the washing, filtering and illumination treatment mode in the system can remove particulate matters and oil smoke content to the maximum extent, reduce the rear-end treatment pressure, ensure the ultraviolet lamp tube treatment effect and reduce the later operation cost. And the on-line monitoring module is arranged to realize full-automatic control of equipment, so that the manual operation cost is reduced, and the equipment is safer and more reliable.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram illustrating an exhaust treatment system according to an embodiment of the present utility model;

fig. 2 is a top view of the first atomizer distribution shown in fig. 1.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Air duct	2	First detection unit
3	Exhaust fan	4	Washing purifying room
				5	Filtering purifying room	6	Dosing unit
7	Photolysis cell	8	Second detection unit
				9	Air outlet	10	Control cabinet
401	First centrifugal pump	402	First filter
				403	First ball valve	404	Water collecting tank
405	First atomizer	406	Clean water supply pump
				407	Water storage pool	408	First water supply ballValve
409	First float valve	501	Second centrifugal pump
				502	Water collecting tank	503	First centrifugal pump
504	Second ball valve	505	Second atomizer
				506	First fixing frame	507	Filler wall
508	Second float valve	509	Second water supply ball valve
				510	Detection probe	601	Stirrer
602	Dosing pump	603	Third ball valve
				604	Medicine adding barrel	701
702	Second fixing frame

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1-2, the present utility model provides a schematic structural view of an embodiment of an exhaust treatment system, the system comprising a receiving chamber for treating exhaust gas, the receiving chamber comprising a scrubbing zone, a filtering zone, and an illumination zone in sequential communication; in this embodiment, the exhaust gas is a mixture of pollutants such as pollutant particles, oil smoke and VOCs discharged by exhaust gas in oil pepper product industry, and further the three main pollutants are directionally removed by arranging a washing zone, a filtering zone and an illumination zone. The washing area comprises a washing and purifying chamber 4, the washing and purifying chamber 4 is communicated with the air duct 1, the air duct 1 is used for collecting waste gas and leading the waste gas into the washing and purifying chamber 4, preferably, an exhaust fan 3 is further arranged at the joint of the washing and purifying chamber 4 and the air duct 1, and the exhaust fan 3 can rapidly lead the waste gas into the washing and purifying chamber 4 from the air duct 1. And a first detection unit 2 is further arranged in the air duct 1, and the first detection unit 2 is used for monitoring the concentration of volatile organic compounds VOCs in the waste gas in the air duct 1 in real time.

The top of the washing and purifying chamber 4 is provided with a plurality of first atomization spray heads 405, the bottom of the washing and purifying chamber 4 is provided with a water collecting tank 404 corresponding to the plurality of first atomization spray heads 405, and the plurality of first atomization spray heads 405 are communicated with the water collecting tank 404; specifically, the water collecting tank 404 is connected with a plurality of first atomizer 405 through the first centrifugal pump 401, the first filter 402 and the first ball valve 403, and then when the waste gas to be treated enters the washing purification chamber 4, the first centrifugal pump 401 in the purification chamber 4 is started, clean water is extracted from the water collecting tank 404, passes through the first filter 402 and the first ball valve 403 and is conveyed to the plurality of first atomizer 405 through a pipeline, so that the whole washing purification chamber 4 is sprayed in a full coverage manner, no spraying dead angle is formed, the sprayed clean water can adsorb particle impurities and part of oil smoke in the waste gas, and can drop into the water collecting tank 404 under the action of gravity, and then the clean water is continuously started to be extracted from the water collecting tank 404 under the action of the first centrifugal pump 401, and then passes through the first filter 402 and the first ball valve 403 again, and the particle impurities in the water collecting tank 404 can be intercepted by the first filter 402 in a conveying pipeline, so that the smoothness of the first atomizer is ensured, and no blockage is caused.

Preferably, as shown in fig. 2, the first atomizing nozzles 405 are staggered in rows and columns, and the number of the nozzles can be increased or decreased according to specific situations, and preferably, the first atomizing nozzles 405 are arranged at intervals in the same row, and the front and rear rows of nozzles 405 are arranged in a staggered manner. Generally, the plurality of first atomizer nozzles 405 are low-pressure atomizer nozzles, and are made of PVC, so that the first atomizer nozzles 405 are prevented from being damaged by oil smoke and corrosive gas in the waste gas. Meanwhile, the first filter 402 is a Y-type filter, which can effectively filter out particulate impurities.

Further, based on that a certain amount of clean water is consumed during the circulation spraying process in the washing and purifying chamber 4, the system further arranges a water storage tank 407, and the water storage tank 407 is communicated with the water collecting tank 404 through a clean water supply pump 406, a first water supply ball valve 408 and a first ball float valve 409, specifically, the first ball float valve 409 is arranged in the water collecting tank 404, the first ball float valve 409 is electrically connected with the control cabinet 10, the first ball float valve 409 is used for detecting the water level signal of the water collecting tank 404, when the water level of the water collecting tank 404 is lower than the limit water level of the ball float valve 409, the ball float valve 409 transmits the water level signal to the control cabinet 10, the clean water supply pump 406 is controlled to be started through the control cabinet 10, and clean water in the water storage tank 407 is controlled to be pumped into the water collecting tank 404 until the water level is restored to be above the limit water level of the first ball float valve 409, the operation of the ball valve supply pump 406 is stopped, further, the condition that the water collecting tank 404 is kept sufficient at all times is ensured, the condition that the first centrifugal pump 401 is prevented from being burnt due to insufficient water level is avoided, and the washing and purifying chamber 4 is also required to ensure a certain length for filling of clean water in the whole washing and purifying process.

Further, the gas processed in the washing purification chamber 4 will enter the filtering area, wherein the filtering area comprises a filtering purification chamber 5, the filtering purification chamber 5 comprises a plurality of second atomizer heads 505 and a filler wall 507 opposite to the plurality of second atomizer heads 505, the plurality of second atomizer heads 505 are also communicated with the dosing unit 6, and then the chemical agent in the dosing unit 6 can be uniformly sprayed on the filler wall 507 through each second atomizer head 505, wherein the chemical agent in the dosing unit 6 comprises sodium hydroxide, sodium hypochlorite and other solutions, and can react with harmful substances in the waste gas to be processed.

Preferably, the packing wall 507 is a structured packing having a certain thickness and having a honeycomb shape inside, and functions to further adsorb soot molecules, small particle impurities and aerosols in the gas, and convert the adsorbed impurities, aerosols and soot molecules from a gas phase into a liquid phase, and then perform saponification reaction and oxidation reaction with alkaline chemical agents in water, thereby achieving the effect of removing the soot molecules.

Further, the bottom of the filler wall 507 is disposed in the water collection tank 502, and the water collection tank 502 is further connected to a plurality of second atomizer heads 505 through a second centrifugal pump 501, a second filter 503 and a second ball valve 504. Specifically, the dosing unit 6 is communicated with the water collection tank 502, and a corresponding stirring unit may be further disposed in the water collection tank 502, so that regular stirring of clear water and chemical agents in the water collection tank 502 may be achieved, in a working state, when gas passes through the filler wall 507, oil smoke, small particulate matters and aerosol in the exhaust gas are adsorbed by the filler wall 507, the chemical agent solution in the water collection tank 502 is transported through a pipeline by the second centrifugal pump 501 and sprayed out from the plurality of second spray nozzles 505, and the plurality of second spray nozzles 505 are integrally vertically disposed in front of the filler wall 507, are inclined downward at an angle and keep a certain distance from the filler wall 507, so as to ensure that the coverage spraying area is maximized.

Preferably, the second atomizing nozzles 505 are arranged in the same row at intervals, and are arranged in a staggered way up and down, so that the full coverage of the filler is realized, and no dead angle exists. And the liquid medicine in the process can be recycled, so that the operation cost is reduced while the effect is ensured. Preferably, the plurality of second atomizing nozzles 505 are all arranged at corresponding positions of the first fixing frame 506, and the first fixing frame 506 is vertically arranged in front of the packing wall 507.

Further, a detection probe 510 is further disposed in the water collection tank 502, the detection probe 510 is electrically connected with the dosing unit 6 through the control cabinet 10, and the detection probe 510 is used for detecting the pH value in the water collection tank 502 and transmitting the pH value to the control cabinet 10. Specifically, the dosing unit 6 includes a dosing pump 602, a third ball valve 603, a dosing barrel 604, and a stirrer 601 disposed in the dosing barrel 604, where the stirrer 601 is used to stir the added medicament, accelerate the dissolution of the medicament, and ensure uniform concentration of the medicament in the dosing barrel 604; the dosing pump 602 is connected with the water collection tank 502 and is electrically connected with the control cabinet 10, and if the pH value in the water collection tank 502 detected by the detection probe 510 is too low, the detection probe 510 transmits pH value information to the control cabinet 10, and the control cabinet 10 controls the dosing pump 602 to start, so that the chemical agent in the dosing barrel 604 is pumped into the water collection tank 502, the pH value in the water collection tank 502 is ensured to be within a preset range, and the alkaline solution sprayed by the second atomizing nozzle 505 can be ensured to perform corresponding saponification reaction and oxidation reaction with substances adsorbed in the filler wall 507.

Further, a second float valve 508 is further provided in the water collection tank 502, the second float valve 508 is electrically connected with the control cabinet 10, and the second float valve 508 is used for detecting a water level signal of the water collection tank 502; and the water collection tank 502 is further connected with the water storage tank 407 through a clean water supply pump 406, a second water supply ball valve 509 and a second float valve 508, and the clean water supply pump 406 is further used for being started or closed according to a water level signal of the second float valve 508 transmitted by the control cabinet 10. That is, when the water level in the water collection tank 502 is lower than the limit water level of the second ball float valve 508, the second ball float valve 508 transmits a water level signal to the control cabinet 10, so that the control cabinet 10 controls the clean water supply pump 406 to start, and further, the clean water is replenished in the water collection tank 502. In addition, when the control cabinet 10 receives the signals of the first ball float valve 409 and the second ball float valve 508 to transmit the water distribution, the water collecting tank 404 and the water collecting tank 502 are supplemented at the same time until the water reaches the limit water level, and then the control cabinet is stopped.

Further, the filler wall 507 is further configured to separate the filtering area from the illumination area, where the illumination area includes a photolysis chamber 7, where the photolysis chamber 7 includes a plurality of ultraviolet lamps 701 and an exhaust port 9 that communicates with the outside, specifically, the plurality of ultraviolet lamps 701 are staggered in rows and columns, preferably, the ultraviolet lamps 701 are uniformly spaced in the same column, the left and right columns are arranged in a staggered manner, and the plurality of ultraviolet lamps 701 are all disposed in the corresponding areas of the second fixing frame 702, the second fixing frame 702 is vertically disposed in the photolysis chamber 7, and the plurality of ultraviolet lamps 701 are all electrically connected with the control cabinet 10, so as to control ultraviolet irradiation of the filtered gas.

Further, the ultraviolet lamp 701 has a wavelength of 185nm, and the principle is that the VOCs in the exhaust gas to be treated can break molecular bonds in the VOCs and decompose the bonds into carbon dioxide and water molecules under the strong oxidation action of the ultraviolet lamp 701 with the wavelength of 185nm, and meanwhile, a large number of ozone molecules are generated when the ultraviolet lamp 701 with the wavelength of 185nm works, so that the strong oxidation action of the ultraviolet lamp 701 is enhanced, and meanwhile, the effect of killing bacteria can be achieved.

Further, the exhaust outlet 9 is further provided with a second detection unit 8, the second detection unit 8 is used for monitoring the concentration of VOCs in the treated exhaust gas, and the second detection unit 8 is further electrically connected with the control cabinet 10. If the data detected by the second detection unit 8 exceeds the set standard, an exceeding signal is transmitted to the control cabinet 10, so that the control cabinet 10 starts an alarm program, and the control cabinet 10 controls the dosing unit 6 to perform dosing operation, and the alarm is released until the data detected by the second detection unit 8 is lower than the set standard, and clean air is discharged from the air outlet 9.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or system that comprises the element. The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. An exhaust gas treatment system, characterized in that the system comprises a containing cavity for treating exhaust gas, wherein the containing cavity comprises a washing area, a filtering area and an illumination area which are communicated in sequence;

the washing area comprises a washing purification chamber (4), the washing purification chamber (4) is communicated with an air duct (1), the air duct (1) is used for collecting waste gas and introducing the waste gas into the washing purification chamber (4), a first detection unit (2) is further arranged in the air duct (1), and the first detection unit (2) is used for monitoring the concentration of Volatile Organic Compounds (VOCs) in the waste gas in the air duct (1) in real time;

the top of the washing purification chamber (4) is provided with a plurality of first atomization spray heads (405), the bottom of the washing purification chamber (4) is provided with a water collecting tank (404) corresponding to the plurality of first atomization spray heads (405), and the plurality of first atomization spray heads (405) are communicated with the water collecting tank (404);

the filtering area comprises a filtering and purifying chamber (5), the filtering and purifying chamber (5) comprises a plurality of second atomizing spray heads (505) and a filler wall (507) opposite to the plurality of second atomizing spray heads (505), the plurality of second atomizing spray heads (505) are also communicated with a dosing unit (6), and the filler wall (507) is used for separating the filtering area from the illumination area;

the illumination area comprises a photolysis chamber (7), the photolysis chamber (7) comprises a plurality of ultraviolet lamp tubes (701) and an air outlet (9) communicated with the outside, a second detection unit (8) is further arranged on the air outlet (9), the second detection unit (8) is used for monitoring the concentration of VOCs in the waste gas after treatment, and the first detection unit (2) and the second detection unit (8) are respectively connected with a control cabinet (10) through electric signals.

2. The exhaust treatment system of claim 1, wherein the sump (404) is connected to a plurality of first atomizer heads (405) by a first centrifugal pump (401), a first filter (402) and a first ball valve (403).

3. The exhaust treatment system of claim 2, wherein the plurality of first atomizer heads (405) are arranged in a staggered row.

4. A waste gas treatment system according to any one of claims 1-3, characterized in that the bottom of the filler wall (507) is arranged in a water collection tank (502), a detection probe (510) is further arranged in the water collection tank (502), the detection probe (510) is further electrically connected with the dosing unit (6) through a control cabinet (10), and the detection probe (510) is used for detecting the pH value in the water collection tank (502) and transmitting the pH value into the control cabinet (10).

5. The exhaust gas treatment system according to claim 4, characterized in that the water collection tank (502) is connected to a plurality of second atomizer heads (505) by means of a second centrifugal pump (501), a second filter (503) and a second ball valve (504).

6. The exhaust gas treatment system according to claim 5, characterized in that the dosing unit (6) comprises a dosing pump (602), a third ball valve (603), a dosing barrel (604) and a stirrer (601) arranged in the dosing barrel, the dosing pump (602) being connected with the water collection tank (502) and with the control cabinet (10) in electrical signal connection.

7. The exhaust treatment system of claim 4, wherein the interior of the filler wall (507) is honeycomb-shaped.

8. The exhaust treatment system of any of claims 5 to 7, wherein the plurality of ultraviolet lamps (701) are arranged in a staggered row and column arrangement; the plurality of ultraviolet lamp tubes (701) are all connected with the control cabinet (10) through electric signals.

9. The exhaust treatment system according to claim 8, characterized in that a first float valve (409) is arranged in the water collection tank (404), the first float valve (409) is electrically connected with the control cabinet (10), and the first float valve (409) is used for detecting a water level signal of the water collection tank (404);

a second float valve (508) is arranged in the water collection tank (502), the second float valve (508) is electrically connected with the control cabinet (10), and the second float valve (508) is used for detecting a water level signal of the water collection tank (502);

the water collecting tank (404) and the water collecting tank (502) are respectively connected with the water storage tank (407) through the clear water supply pump (406), and the clear water supply pump (406) is used for being started or closed according to a water level signal of the first ball float valve (409) and/or the second ball float valve (508) transmitted by the control cabinet (10).

10. The exhaust gas treatment system according to claim 9, characterized in that the junction of the washing and purifying chamber (4) and the air duct (1) is further provided with an exhaust fan (3).