CN206715673U - Foul gas processing unit - Google Patents

Abstract

The utility model discloses a malodorous gas treatment device. An upper packing tower, a middle packing tower and a lower packing tower are coaxially arranged from top to bottom. An upper packing tower is arranged between the bottom of the upper packing tower and the top of the middle packing tower. A sieve plate, a middle sieve plate is arranged between the bottom of the middle packing tower and the top of the lower packing tower, and a lower sieve plate is arranged at the bottom of the lower packing tower, and the lower sieve plate and the lower packing tower There is an accommodation space between the bottom of the upper packing tower; the upper part of the upper packing tower is provided with an upper spray water distributor, the upper part of the middle packing tower is provided with a middle shower water distributor, and the accommodation space at the bottom of the lower packing tower An aerator is arranged inside, and the upper packing tower, the middle packing tower and the lower packing tower are all filled with natural porous mineral materials. The utility model maintains the oxygen content in the circulating water through aeration and circulating spraying, ensures the metabolism and respiration of microorganisms, and improves the treatment efficiency of the biological packing tower for treating malodorous gas.

Description

Malodorous gas treatment device

technical field

The utility model relates to the technical field of environmental protection equipment, in particular to a malodorous gas processing device.

Background technique

Odor gas is an important precursor substance for the formation of fine particles and ozone, and its discharge into the atmosphere has a great impact on environmental quality. Among them, triphenyls, halogenated hydrocarbons, nitrobenzenes, anilines and other substances are harmful to the human body. It is harmful to health, and its foul smell will affect the lives of surrounding residents, and its governance is increasingly being paid attention to by people.

Among the treatment methods adopted at home and abroad, the common methods of malodorous gas treatment include biological decomposition method, activated carbon adsorption method, plasma method, plant spraying liquid deodorization method and UV photolysis purification method. Among the many treatment technologies, biological treatment technology is a technology that has received wide attention in recent years. The specific treatment processes include biological filtration, biological trickling, biological washing, activated sludge and membrane biological methods. Biological treatment technology has many advantages. The structure of process equipment is relatively simple, the investment and operation cost of treatment process are low, and there are few secondary pollutants. Odor biological treatment technology is mainly suitable for the treatment of low-concentration malodorous gases, especially for the treatment of gases with better biodegradable components.

However, in the current application process of odorous biological treatment technology, there are the following disadvantages: the device occupies too much space, the filling layer is easy to block, and the biological treatment efficiency is low. Therefore, it is necessary to further optimize the spraying conditions, control the biomass, and improve the filling. Performance and other aspects to improve the efficiency of biological treatment.

Utility model content

The purpose of the utility model is to overcome the deficiency of the above-mentioned background technology, and provide a malodorous gas treatment device with high treatment efficiency and non-blocking packing.

In order to achieve the above object, the malodorous gas treatment device designed by the utility model includes an upper packing tower, a middle packing tower and a lower packing tower coaxially arranged from top to bottom, the bottom of the upper packing tower and the top of the middle packing tower An upper sieve plate is arranged between them, a middle sieve plate is arranged between the bottom of the middle packing tower and the top of the lower packing tower, and a lower sieve plate is arranged at the bottom of the lower packing tower, and the lower sieve There is an accommodation space between the plate and the bottom of the lower packing tower; the upper part of the upper packing tower is provided with an upper spray water distributor, the upper part of the middle packing tower is provided with a middle spray water distributor, and the lower packing An aerator is arranged in the accommodation space at the bottom of the tower, and the upper packing tower, the middle packing tower and the lower packing tower are all filled with natural porous mineral materials;

The upper part of the side wall of the lower packing tower is respectively provided with a waste gas inlet for entering the malodorous gas and a water inlet hole for replenishing water in the lower packing tower, and the waste gas inlet is connected to the aerator through an air intake pipe. The bottom of the side wall of the lower packing tower is provided with a water outlet for the discharge of circulating water, and the water outlet is respectively connected with the upper spray water distributor and the middle spray water distributor through the aqueduct; the upper packing tower The top of the tank is provided with a gas outlet for the exhaust of the treated gas.

In the above technical solution, a fan for blowing malodorous gas into the lower packed tower is provided outside the waste gas inlet of the lower packed tower.

In the above technical solution, the inner wall of the water outlet of the lower packed tower is provided with a filter for filtering circulating water.

In the above technical solution, the water outlet of the lower packing tower is also provided with a vent pipe connected with the water guide pipe, and a first gate valve is provided on the pipe of the vent pipe.

In the above technical solution, a sprinkler pump for driving water to circulate upward is arranged on the pipeline of the water guide pipe, and a second gate valve is also arranged on the pipeline of the water guide pipe.

In the above technical solution, a wire mesh demister for removing the mist in the treated gas is arranged in the gas outlet.

In the above technical solution, the outer wall of the lower packing tower on the same side as the water inlet is provided with a screw guide rail, and a water level controller is installed on the screw guide rail.

In the above technical solution, a water level hole is provided below the water level controller through the outer wall of the lower packing tower, and the water level hole and the water inlet hole are respectively connected to the water outlet end of the water level controller through a hose, and the water level hole of the water level controller The water inlet end is connected with the external water source.

In the above technical solution, the exhaust gas inlet and the water outlet are respectively located on the side walls on opposite sides of the lower packed tower.

In the above technical solution, the number of the middle packed towers is 1-6.

Compared with the prior art, the utility model has the following advantages:

First, the utility model blows the malodorous gas into the aerator at the bottom of the lower packing tower through the blower, and the pollutants are fully contacted with water and natural porous mineral materials for absorption, and the natural porous mineral materials are absorbed by adsorption and biofilm decomposition. Pollutants are completely decomposed. After the exhaust gas is treated and thoroughly purified by the three-stage packing tower, it is then discharged naturally after being demistered by the wire mesh eliminator. The water level in the packing tower is controlled by the water level controller, and it is automatically replenished when the water level drops. The treatment efficiency is high. Packing does not clog.

Second, the utility model maintains the oxygen content in the circulating water through aeration and circulating spraying, guarantees the metabolic respiration of microorganisms, and makes full use of the characteristics of the developed fine pores and strong adsorption capacity of natural porous mineral materials, which improves the efficiency of the biological packing tower. Treatment efficiency of malodorous gas.

Thirdly, the malodorous gas treatment device of the present invention has small footprint, low manufacturing cost, low maintenance and management costs, and strong practicability.

Description of drawings

Fig. 1 is a sectional structure schematic diagram of a malodorous gas treatment device;

Fig. 2 is a schematic structural view of another angle of the malodorous gas treatment device shown in Fig. 1;

Among them: 1-upper packing tower, 2-middle packing tower, 3-lower packing tower, 4-upper sieve plate, 5-middle sieve plate, 6-lower sieve plate, 7-holding space, 8-upper spray Shower water device, 9-spray water distributor, 10-aerator, 11-natural porous mineral material, 12-exhaust gas inlet, 13-water inlet, 14-intake pipe, 15-water outlet, 16- Water guide pipe, 17-air outlet, 18-fan, 19-filter, 20-venting pipe, 21-first gate valve, 22-spray water pump, 23-second gate valve, 24-screen demister, 25 -screw guide rail, 26-water level controller, 27-water level hole, 28-hose.

detailed description

The implementation of the utility model will be described in detail below in conjunction with the examples of implementation, but they do not constitute a limitation of the utility model, and are only examples. At the same time, it will become clearer and easier to understand by illustrating the advantages of the present utility model.

As shown in the figure, a malodorous gas treatment device of the present utility model includes an upper packing tower 1, a middle packing tower 2 and a lower packing tower 3 arranged coaxially from top to bottom, and the number of middle packing towers 2 can be increased according to the gas condition , increase the residence time of the gas, and strengthen the treatment effect of the malodorous gas. Preferably, the number of middle packed towers 2 is 1 to 6. An upper sieve plate 4 is arranged between the bottom of the upper packed tower 1 and the top of the middle packed tower 2, and a middle sieve plate 5 is arranged between the bottom of the middle packed tower 2 and the top of the lower packed tower 3, and the lower packed tower 3 A lower sieve plate 6 is provided at the lower part of the tower, and an accommodating space 7 is left between the lower sieve plate 6 and the bottom of the lower packed tower 3 . The upper part of the upper packing tower 1 is provided with an upper spray water distributor 8, the upper part of the middle packing tower 2 is provided with a middle spray water distributor 9, and the aerator 10 is provided in the accommodation space 7 at the bottom of the lower packing tower 3, and the upper The packed tower 1 , the middle packed tower 2 and the lower packed tower 3 are all filled with natural porous mineral materials 11 . The natural porous mineral material 11 adopts the water quality improvement treatment agent manufactured by the Japanese invention patent publication No. JP4822369B2 "water quality improvement treatment agent and its manufacturing method", which utilizes zeolite, montmorillonite, bentonite, vermiculite, etc. The natural porous mineral material made by the exchange method is mainly used for the purpose of water quality improvement. The material has excellent properties, and can be used to improve the existing biological treatment technology for odor and improve the treatment effect of the biological treatment technology.

As shown in the figure, the upper part of the side wall of the lower packed tower 3 is respectively provided with a waste gas inlet 12 for entering the malodorous gas, and a water inlet 13 for supplying water in the lower packed tower 3, and the waste gas inlet 12 is connected with the aerator. 10 communicates with each other through the inlet pipe 14, the bottom of the side wall of the lower packed tower 3 is provided with a water outlet 15 for the discharge of circulating water, and the waste gas inlet 12 and the water outlet 15 are respectively located on the side walls of the lower packed tower 3 on opposite sides. The water outlet 15 communicates with the upper spray water distributor 8 and the middle spray water distributor 9 respectively through the water guide pipe 16; the top of the upper packed tower 1 is provided with an air outlet 17 for discharging the treated gas, and the lower packed tower 3 The exhaust gas inlet 12 is provided with a blower fan 18 for blowing foul gas into the down packing tower 3. In order to ensure the stable operation of the system, the foul smell gas containing impurities can be filtered before entering the fan 18. The water outlet 15 inner wall of the lower packed tower 3 is provided with a filter 19 for filtering circulating water, and the water outlet 15 of the lower packed tower 3 is also provided with a vent pipe 20 communicated with the water guide pipe 16, and the pipe of the vent pipe 20 A first gate valve 21 is provided on the road. A spray pump 22 for driving water to circulate upwards is arranged on the pipeline of the water guide pipe 16, a second gate valve 23 is also arranged on the pipeline of the water guide pipe 16, and a wire mesh for removing mist in the treated gas is arranged in the air outlet 17 Demister 24. The outer wall of the lower packing tower 3 located at the same side as the water inlet 13 is provided with a screw guide rail 25 , and a water level controller 26 is installed on the screw guide rail 25 . The water level hole 27 that runs through the outer wall of the lower packing tower 3 is provided below the water level controller 26. The water level hole 27 and the water inlet hole 13 are respectively connected with the water outlet end of the water level controller 26 through a hose 28, and the water inlet end of the water level controller 26 Connect to outside water source. The water inlet of the water level controller 26 is connected with an external water source, and can automatically replenish water according to the set water level depth to keep the water level stable; the water level controller 26 can also adopt an electronic induction water level control system, according to the water quality of the circulating water, combined with the system operating status, Make a replacement.

The utility model can blow the polluting malodorous gas into the aerator 10 at the bottom of the lower packing tower 3 through the blower fan 18, and the pollutants, water and natural porous mineral materials are fully contacted and absorbed, and the natural porous mineral materials are absorbed by the adsorption and biological The pollutants are completely decomposed by membrane decomposition. After the exhaust gas is treated and thoroughly purified by the three-stage packing tower, it is then discharged naturally after demisting by the wire mesh eliminator; the water level in the packing tower is controlled by the water level controller 26, and it is automatically replenished when the water level drops ; Through aeration and circular spraying, the oxygen content in the circulating water is maintained to ensure the metabolic respiration of microorganisms. The utility model patent makes full use of the characteristics of developed fine pores and strong adsorption capacity of natural porous mineral materials, improves the treatment efficiency of the biological packing tower for treating malodorous gases, and reduces the equipment occupation.

The above are only specific implementation methods of the present utility model. It should be pointed out that any changes or replacements that can be easily imagined by those skilled in the art within the technical scope disclosed in the present utility model should be covered by the protection of the present utility model. within range.

Claims (10)

1. a malodorous gas treatment device, characterized in that: comprise an upper packed tower (1), a middle packed tower (2) and a lower packed tower (3) coaxially arranged from top to bottom, said upper packed tower (1 ) is provided with an upper sieve plate (4) between the bottom of the middle packing tower (2) and the top of the middle packing tower (2), and a middle screen hole is arranged between the bottom of the middle packing tower (2) and the top of the lower packing tower (3) plate (5), the bottom of the lower packed tower (3) is provided with a lower sieve plate (6), and there is an accommodation space ( 7); the top of the upper packing tower (1) is provided with an upper spray water distributor (8), the upper part of the middle packing tower (2) is provided with a middle spray water distributor (9), and the lower The accommodation space (7) at the bottom of the packed tower (3) is provided with an aerator (10), and the upper packed tower (1), the middle packed tower (2) and the lower packed tower (3) are all filled with natural porous mineral material (11); The upper part of the side wall of the lower packed tower (3) is respectively provided with a waste gas inlet (12) for entering the malodorous gas and a water inlet hole (13) for supplying water in the lower packed tower (3). The exhaust gas inlet (12) is communicated with the aerator (10) through the air inlet pipe (14); the bottom of the side wall of the lower packing tower (3) is provided with a water outlet (15) for circulating water discharge, and the The water outlet (15) is respectively communicated with the upper spray water distributor (8) and the middle spray water distributor (9) through the water guide pipe (16); The air outlet (17) through which the gas is discharged. 2. The malodorous gas treatment device according to claim 1, characterized in that: the waste gas inlet (12) of the lower packed tower (3) is provided with a blower fan for blowing the malodorous gas into the lower packed tower (3) (18). 3. The malodorous gas treatment device according to claim 2, characterized in that: the inner wall of the water outlet (15) of the lower packed tower (3) is provided with a filter (19) for filtering circulating water. 4. The malodorous gas treatment device according to claim 3, characterized in that: the water outlet (15) of the lower packed tower (3) is also provided with a vent pipe (20) communicated with the water guide pipe (16) , a first gate valve (21) is arranged on the pipeline of the vent pipe (20). 5. The malodorous gas treatment device according to claim 4, characterized in that: the pipeline of the water guide pipe (16) is provided with a spray water pump (22) for driving water to circulate upwards, and the water guide pipe (16) ) is also provided with a second gate valve (23) on the pipeline. 6. according to claim 1 or 2 or 3 or 4 or 5 described malodorous gas treatment devices, it is characterized in that: the wire mesh eliminator ( twenty four). 7. The malodorous gas treatment device according to claim 6, characterized in that: said lower packing tower (3) is located on the outer wall of the same side of the water inlet (13) and is provided with a screw guide rail (25), and said screw guide rail (25) is equipped with water level controller (26). 8. malodorous gas treatment device according to claim 7, is characterized in that: the below of described water level controller (26) is provided with the water level hole (27) that runs through lower packed tower (3) outer wall, and described water level hole ( 27) and the water inlet (13) are respectively connected to the water outlet of the water level controller (26) through the hose (28), and the water inlet of the water level controller (26) is connected to the external water source. 9. The malodorous gas treatment device according to claim 8, characterized in that: the waste gas inlet (12) and water outlet (15) are respectively located on the side walls of the lower packed tower (3) on opposite sides. 10. The malodorous gas treatment device according to claim 9, characterized in that: the number of the middle packed towers (2) is 1-6.