CN210079133U

CN210079133U - Sludge waste gas VOCs processing apparatus

Info

Publication number: CN210079133U
Application number: CN201920515860.7U
Authority: CN
Inventors: 王雪峰; 周艳; 张泱泱
Original assignee: NANTONG RUZE ENVIRONMENTAL ENGINEERING TECHNIQUE Co Ltd
Current assignee: NANTONG RUZE ENVIRONMENTAL ENGINEERING TECHNIQUE Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-18
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses a mud waste gas VOCs processing apparatus, it is including the scrubbing tower that sets gradually, biological filter, photocatalysis room and clean room, one side of scrubbing tower is connected with waste gas and advances the pipe, the inside of scrubbing tower is provided with sprays layer and packing layer, the top of scrubbing tower is provided with the air outlet, the scrubbing tower bottom is circulating water pool, circulating water pool passes through circulating water pump and sprays the water piping connection on layer, the scrubbing tower passes through the air outlet and is connected with biological filter, be provided with washing liquid shower and biological packing layer in the biological filter, biological packing layer is located the below of washing liquid shower, the top of biological filter is passed through the pipeline and is connected with the photocatalysis room, the photocatalysis room is connected with the clean room again, be provided with the active carbon layer in the clean room. Spray through the scrubbing tower, remove dust to waste gas and handle, get rid of the tiny granule in the waste gas, then carry out biological treatment and get rid of the VOCs in the waste gas, further get rid of VOCs through UV photocatalyst again, handle through the active carbon layer at last, the clean gas of discharge. The biological method has the advantages of low investment, high removal efficiency, low energy consumption, no secondary pollution and the like.

Description

Sludge waste gas VOCs processing apparatus

Technical Field

The utility model relates to a waste gas treatment equipment, concretely relates to mud waste gas VOCs processing apparatus.

Background

Volatile Organic Compounds (VOCs) are considered to be the major air pollutants, and their content in the air is strictly regulated. The kinds of the waste gas of the VOCs are various, and the waste gas includes alkanes, alkenes, aromatics, alcohols, esters, aldehydes, ketones, acids, acid anhydrides, amides and the like. Two treatment methods are adopted for organic waste gas treatment: one is chemical combustion and one is physical adsorption. The chemical combustion requires that the content of VOCs (volatile organic compounds) in the waste gas reaches a certain concentration, the paint spraying waste gas is captured by paint mist, the concentration is low, and direct combustion conditions are not provided, so that a physical adsorption scheme is generally adopted.

The most commonly used adsorbents for organic waste gas physical adsorption processes are both activated carbon and molecular sieve zeolites. The zeolite is non-combustible, has larger adaptability to humidity and RH <90 percent, and has long service life and high one-time investment cost; the active carbon has short service life and higher operation cost. In the prior art, a combined process of adsorption concentration and catalytic combustion is adopted, VOCs are adsorbed and concentrated by activated carbon, and low-temperature combustion is realized by electric heating of a catalyst. However, although the method is simple in process and low in cost, secondary pollution is easily caused, and low-temperature combustion is not environment-friendly.

SUMMERY OF THE UTILITY MODEL

For solving the problem in the above-mentioned background art, the utility model provides a sludge waste gas VOCs processing apparatus.

The utility model provides a following technical scheme:

the utility model provides a mud waste gas VOCs processing apparatus, it is including the scrubbing tower, biological filter, photocatalysis room and the clean room that set gradually, one side of scrubbing tower is connected with waste gas and advances the pipe, the inside of scrubbing tower is provided with sprays layer and packing layer, the top of scrubbing tower is provided with the air outlet, the scrubbing tower bottom is the circulating water pond, the circulating water pond passes through circulating water pump and sprays the water piping connection on layer, the scrubbing tower passes through the air outlet and is connected with biological filter, be provided with washing liquid shower and biological packing layer in the biological filter, biological packing layer is located the below of washing liquid shower, the top in biological filter is passed through the pipeline and is connected with the photocatalysis room, the photocatalysis room is connected with the clean room again, be provided with the active carbon layer in the clean room.

Furthermore, a washing liquid spray pipe of the biological filter is communicated with a circulating water tank of the washing tower, and the bottom of the biological filter is communicated with the circulating water tank at the bottom of the washing tower through a pipeline.

Furthermore, the packing layer in the washing tower is made of polypropylene plastics into a spherical shape.

Further, the biological filler layer is activated sludge or biological active filler.

Further, the photocatalysis chamber adopts a UV photocatalyst.

Compared with the prior art, the beneficial effects of the utility model are that: spray through the scrubbing tower, remove dust to waste gas and handle, get rid of the tiny granule in the waste gas, then carry out biological treatment and get rid of the VOCs in the waste gas, further get rid of VOCs through UV photocatalyst again, handle through the active carbon layer at last, the clean gas of discharge. The biological method has the advantages of low investment, high removal efficiency, low energy consumption, no secondary pollution and the like.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the photocatalytic chamber of the present invention.

Fig. 3 is a schematic structural diagram of the packing layer inside the scrubber tower of the present invention.

In the figure: 1. a washing tower 11, a spraying layer 12, a filler layer 121, polypropylene plastic 122 and a frame; 2. a biological filter 21, a washing liquid spray pipe 22 and a biological filler tank; 3. a photocatalysis chamber 31, a UV photocatalyst layer 32, a nano microporous active silicon layer 4, a purification chamber 41 and an active carbon layer; 5. an exhaust gas inlet pipe; 6. air outlet, 7, circulating water pool, 8, circulating water pump, 9, water supply pipe, 10 and pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the sludge waste gas VOCs treatment apparatus of the present invention comprises a washing tower 1 and a biological filter 2 arranged in sequence, photocatalysis room 3 and clean room 4, one side of scrubbing tower 1 is connected with waste gas and advances pipe 5, the inside of scrubbing tower 1 is provided with sprays layer 11 and packing layer 12, the top of scrubbing tower 1 is provided with air outlet 6, scrubbing tower 1 bottom is circulating water pond 7, circulating water pond 7 passes through circulating water pump 8 and is connected with the delivery pipe 9 that sprays layer 11, scrubbing tower 1 passes through air outlet 6 and is connected with biological filter 2, be provided with washing liquid shower 21 and biological packing layer 22 in the biological filter 2, biological packing layer 22 is located the below of washing liquid shower 21, the top of biological filter 2 is passed through pipeline 10 and is connected with photocatalysis room 3, photocatalysis room 3 is connected with clean room 4 again, be provided with activated carbon layer 41 in the clean room 4.

A washing liquid spray pipe 21 of the biological filter 2 is communicated with a circulating water tank 7 of the washing tower 1, and the bottom of the biological filter 2 is communicated with the circulating water tank 7 at the bottom of the washing tower 1 through a pipeline 10. Thus, the water sprayed by the spray layer 11 and the cleaning solution spray pipe 21 in the washing tower 1 and the washing tower 1 can be recycled.

As shown in FIG. 3, the packing layer 12 in the scrubber tower 1 is made of polypropylene plastic 121 into a plurality of balls, and the polypropylene plastic 121 is fixed at the periphery by a frame 122. The filter has the advantages of high filtering speed, large dirt interception capacity and good filtering effect, and is a good waste gas purifying material.

The biological filler layer 22 is active sludge or biological active filler.

As shown in fig. 2, the photocatalytic chamber 3 has a UV photocatalyst layer 31 and a nano-microporous active silicon layer 32, and the UV photocatalyst layer 31 can effectively degrade VOCs due to its strong oxidizing ability, and generates a stronger catalytic degradation function under the action of ultraviolet light. The nano microporous active silicon layer 32 has strong adsorption capacity and effectively removes toxic substances.

The UV photocatalyst layer 31 decomposes the contaminants instead of adsorbing the contaminants, and the quality change rather than the quantity change occurs, and irreversible decomposition is performed on the contaminants; the UV photocatalytic oxidation almost has a strong decomposition effect on all bacteria, viruses and organic pollutants, and particularly thoroughly decomposes bacteria and viruses which are not easy to perceive by people; the final products of UV photocatalytic oxidation are carbon dioxide and water, which are harmless to human bodies and can not generate secondary pollution to the environment caused by similar disinfectants.

Waste gas is led out by the waste gas inlet pipe 5 and then enters the washing tower 1 for purification treatment, and certain filler is added in the washing tower 1, so that the waste gas can be fully contacted with washing liquid, and the dust removal effect is achieved.

Biological purification of exhaust gas is that microorganisms convert VOCs in the exhaust gas into simple inorganic substances (CO) through metabolic activity₂Water, etc.) and cellular constituent materials.

The washing liquid is sprayed from the top of the biological filter 2, VOCs and O in the waste gas₂In the process, the liquid phase is introduced, the washing liquid absorbing VOCs enters the biological filler layer 22 (activated sludge), the VOCs in the washing liquid are degraded by the activated sludge in the biological filler pool, and the regenerated washing liquid is recycled. The washing liquid is mainly water.

When the biological filler layer 22 is a microbial filler, the waste gas is humidified by the washing liquid and then enters the biological filler layer 22, and flows through the biological active filler layer with the thickness of 0.5-1m, and in the process, the pollutants are transferred into the biological phase from the gas phase and are further oxidized and decomposed. VOCs flow through the filler with microorganisms attached to the surface, and are degraded after contacting with the microorganisms.

Then, the excess untreated VOCs pass through the UV photocatalyst through the photocatalytic chamber 3, the UV photocatalyst has strong oxidizing ability and can effectively degrade the VOCs, and finally, the UV photocatalyst passes through the activated carbon layer 41 to obtain clean gas.

The activated carbon is activated and has the characteristics of large specific surface area and many pores, so that the activated carbon has strong adsorption capacity. The activated carbon waste gas treatment equipment does not produce secondary pollution, and has low equipment investment and high purification efficiency.

The utility model discloses a sludge waste gas VOCs processing apparatus has scrubbing tower 1, biological filter 2, photocatalysis room 3 and clean room 4, sprays through the scrubbing tower, removes dust to waste gas and handles, gets rid of the tiny granule in the waste gas, then carries out biological treatment and gets rid of the VOCs in the waste gas, further gets rid of VOCs through the UV photocatalyst again, handles through the active carbon layer at last, discharges clean gas. The biological method has the advantages of low investment, high removal efficiency, low energy consumption, no secondary pollution and the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mud waste gas VOCs processing apparatus which characterized in that: it is including the scrubbing tower, biological filter, photocatalysis room and the clean room that set gradually, one side of scrubbing tower is connected with waste gas and advances the pipe, the inside of scrubbing tower is provided with sprays layer and packing layer, the top of scrubbing tower is provided with the air outlet, the scrubbing tower bottom is circulating water tank, circulating water tank passes through circulating water pump and the delivery pipe connection that sprays the layer, the scrubbing tower passes through the air outlet and is connected with biological filter, be provided with washing liquid shower and biological packing layer in the biological filter, biological packing layer is located the below of washing liquid shower, the top in biological filter is passed through the pipeline and is connected with the photocatalysis room, the photocatalysis room is connected with the clean room again, be provided with the active carbon layer in the clean room.

2. The device for treating VOCs in sludge waste gas according to claim 1, wherein: and a washing liquid spray pipe of the biological filter is communicated with a circulating water tank of the washing tower, and the bottom of the biological filter is communicated with the circulating water tank at the bottom of the washing tower through a pipeline.

3. The device for treating VOCs in sludge waste gas according to claim 1, wherein: the packing layer in the washing tower is made of polypropylene plastics into a spherical shape.

4. The device for treating VOCs in sludge waste gas according to claim 1, wherein: the biological filler layer is active sludge or biological active filler.

5. The device for treating VOCs in sludge waste gas according to claim 1, wherein: the photocatalysis chamber adopts UV photocatalyst.