CN104147922B - A kind of multifunction combined gas biological purifying retracting device and recovery method - Google Patents

Abstract

A combined multifunctional odor biological purification and recovery device, with an integrated structure, comprising: a recovery pipe is provided at the bottom of the recovery device, and an exhaust pipe is provided at the top; a biological washing pool is located above the recovery pipe, and the biological washing pool is provided with a water-filling tank. There is a grid filter under the biological washing tank, and the recovery pipeline is below the grid filter; the exhaust pipe on the top of the recovery device is connected to the recovery pipeline through a compressor; there is a bubbling spray in the biological washing tank, the The bubbling spray is connected to a blower, and the bubbling spray head is immersed in the water through the three-way pipe; a biological filter is arranged above the biological washing pool, and the biological filter is composed of upper and lower layers of air filter plates, and each layer of air filter plates A stuffing chamber is provided; a porous shower head is provided above the upper biological filter, and the porous shower head is connected with a buffer pipe for water supply and spray filtration. The invention also discloses a method for recovering waste gas by using a combined multifunctional odor biological purification and recovery device.

Description

A multifunctional combined gas biological purification recovery device and recovery method

technical field

The invention belongs to the technical field of gas biological purification and recovery, and in particular relates to a multifunctional combined gas biological purification and recovery device.

The present invention also relates to a method for treating and collecting waste gas by using the recovery device.

Background technique

With the continuous acceleration of urbanization, industry and agriculture, chemical industry, automobile exhaust, solid waste, landfill, etc. produce odor pollution, which has a serious impact on the production and life of residents, and the resulting disputes have attracted widespread attention . The problem of odor pollution needs to be solved urgently.

At present, most of the odor treatment methods in our country are single treatment of biological washing tank, biological filter tank and trickling filter tank, and the treatment effect is not very ideal. Odor washing mostly adopts water washing method, which can only deal with the pollutants whose odor is easily soluble in water, and cannot effectively remove other organic pollutants.

Due to the simple structure of the filter tank, the biological filtration method is mostly active filler formed by mixing compost, peat, sawdust, plants, etc., the film-hanging time is long, the microorganisms consume too much organic matter in the filter material, and the reprocessing concentration is concentrated in a large range. Exhaust gas will accelerate the service life of the filter material, resulting in system instability and difficulty in replacing the filter material. Therefore, there is an urgent need for a combined and effective comprehensive treatment process. Use physical methods, chemical methods, and biological methods to comprehensively remove odorous gases, and effectively recycle and discharge the gases to solve the problem of odorous pollution.

Contents of the invention

The purpose of the present invention is to provide a multifunctional combined gas biological purification recovery device.

Another object of the present invention is to provide a method for recovering waste gas using the above-mentioned device.

In order to achieve the above object, the combined multifunctional odor biological purification and recovery device provided by the present invention has an integrated structure, including:

A recovery pipe is provided at the bottom of the recovery device, and an exhaust pipe is provided at the top;

The top of the recovery pipeline is a biological washing tank, the biological washing tank is provided with a water supply pipeline, the bottom of the biological washing tank is provided with a grid filter, and the bottom of the grid filter is a recovery pipeline;

The exhaust pipeline at the top of the recovery device is connected to the recovery pipeline through a compressor;

There is a bubbling spray in the biological washing tank, the bubbling spray is connected to a blower, and the bubbling spray head is immersed in the water through the three-way pipe;

There is a biological filter above the biological washing tank, which is composed of upper and lower layers of air filter plates, and each layer of air filter plates is provided with a packing chamber;

A porous shower head is arranged above the upper biological filter, and the porous shower head is connected with a buffer pipeline for water supply and spray filtration.

In the combined multifunctional odor biological purification and recovery device, a gas decompression device is provided between the bubbling spray and the blower to control the flow rate of the gas and prevent the backflow of the liquid.

In the combined multifunctional odor biological purification and recovery device, the bubbling spray is a combination of one or more pipes.

In the combined multifunctional odor biological purification and recovery device, a sliding sealing plate is provided on the side of the packing chamber of the biofilter to facilitate replacement of the packing, and the gas filter plate is made of zeolite-processed composite plate.

In the described combined multifunctional odor biological purification and recovery device, the filler in the packing chamber of the lower air filter plate is a mixture of oyster shells, egg shells and corncobs in a volume ratio of 1:1:2; the upper air filter plate The filler in the filler chamber is a mixture of compost, peat, and sawdust in a volume ratio of 2:1:1.

In the combined multifunctional odor biological purification and recovery device, the buffer pipeline connected to the porous shower head and the water supply pipeline of the biological washing tank are connected to the same water storage tank through an exchange valve.

In the combined multifunctional odor biological purification and recovery device, the exhaust pipe and the recovery pipe are connected through a single-port valve.

The method provided by the present invention for waste gas recovery using the above-mentioned combined multifunctional odor biological purification and recovery device:

The gas is sent to the bubbling spray head by the blower, and the gas is dispersed into multiple streams and injected into the water to dissolve the soluble substances in the biological washing tank. The washed gas passes through the air filter plate of the biological filter and the upper and lower fillers. After being filtered in the chamber, it is washed by the porous shower head. The washed gas enters the exhaust pipe and is compressed by the compressor and sent to the recovery pipeline to achieve the capture and recovery of the gas. After recovery, it can be reprocessed or discharged;

The sediment and suspended matter in the biological washing tank are filtered by the grid filter, and the filtered liquid enters the recovery pipeline for recycling or discharge.

In the method, the biological washing tank is supplied with liquid by the water adding pipeline; the porous shower head is supplied with liquid by the buffer pipeline.

In the method, the gas-liquid exchange discharge collection device is to discharge and collect the liquid discharged from the biological washing tank and the compressed gas in the recovery pipeline.

The invention has the advantages of strong stability, low cost, high treatment and recycling efficiency, and achieves resource utilization, weight reduction and harmlessness.

Description of drawings

Fig. 1 is a schematic diagram of the combined multifunctional odor biological purification recovery device of the present invention.

Explanation of main component symbols in the attached drawings:

1 blower, 2 decompression valve, 3 tee pipe, 4 bubbling spray, 5 first packing chamber, 6 second packing chamber, 7 exhaust pipe, 8 compressor, 9 grid filter, 10 recovery pipe, 11 single port valve, 12 buffer pipe, 13 multi-hole shower head, 14 water adding pipe, 15 exchange valve, 16 sliding sealing plate, 17 air filter plate.

detailed description

In order to further describe the technical content of the present invention, further description will now be made in conjunction with the accompanying drawings.

As shown in Figure 1, it is a schematic diagram of the combined multifunctional odor biological purification recovery device of the present invention. The combined multifunctional odor biological purification and recovery device of the present invention has an integrated structure, including:

The bottom of the recovery device is provided with a recovery pipe 10, and the top of the recovery device is provided with an exhaust pipe 7. The top of the recovery pipeline 10 is a biological washing tank, the biological washing tank is provided with a water supply pipeline 14, and the bottom of the biological washing tank is provided with a grid filter 9, and the bottom of the grid filter 9 is a recovery pipeline 10. The exhaust pipeline 7 at the top of the recovery device is connected to the recovery pipeline 10 through a compressor 8 . A bubbling shower 3 is arranged in the biological washing tank, and the bubbling shower 3 is connected with a blower 1, and the bubbling shower head is immersed in water through the three-way pipe 3. A biofilter is arranged above the biological washing tank, and the biofilter consists of upper and lower layers of air filter plates 17, and each layer of air filter plates 17 is provided with a stuffing chamber 5,6. The filler in the first filler chamber 5 is composed of oyster shells, egg shells and corncobs in a volume ratio of 1:1:2, and the filler in the second filler chamber 6 is to adopt compost, peat, wood chips in a volume ratio of 2: 1:1 ratio mix composition. The sides of the first stuffing chamber 5 and the second stuffing chamber 6 are respectively provided with sliding sealing plates 16 to facilitate replacement of stuffing. A porous shower head 13 is arranged above the biofilter, and the porous shower head is connected with a buffer pipe 12 for water replenishment spraying and filtering.

When the combined multifunctional odor biological purification and recovery device of the present invention is actually used, the gas is sent into the pipeline by the blower 1, and a pressure reducing valve 2 is arranged at a place in the center of the pipeline, mainly through the pressure reducing valve 2 to the pipeline. Controlling the actual air flow can also prevent the backflow of the liquid in the biological scrubber, resulting in short circuit failure of the equipment. The gas passes through the decompression valve 2 to adjust the gas flow, and then passes through a three-way pipe 3 to be evenly dispersed into two streams of gas, and then through bubbling spray 4 to disperse the gas into dry strands and inject water to dissolve and wash soluble substances Heat conversion, the water in the biological washing tank is sprayed down, and it is in countercurrent contact with the odor. The stoppage time of the odor is 5-10s. More than 70% of the organic pollutants in the odor are absorbed by the biological micelles, and the remaining gas enters the combination The multi-functional odor biological purification and recovery device is further filtered in the biological filter on the upper part, and the odor gas is further processed through porous adsorption and microbial degradation.

After being washed in the biological washing tank, the gas is filtered through the filter plate 17, the first packing chamber 5, and the second packing chamber 6, and then the residual odorous pollutants are sprayed and washed by the porous shower head 13. The gas enters the exhaust duct 7. The spray liquid of the porous shower head 13 is 60%-80% of 80-150ppm chlorine dioxide solution, and the balance is water. The gas in the exhaust pipeline 7 is compressed by the compressor 8 and sent to the recovery pipeline 10 to achieve the capture and recovery of the gas, which can be reprocessed or discharged after recovery. Compressing the treated gas is convenient for collection, utilization and discharge.

A buffer pipe 12 is installed at the bottom side of the biological washing filter to carry out water replenishment and spray filtration. Since the dirty liquid at the bottom of the biological scrubbing filter needs to be discharged after being used for a period of time, the biological scrubbing filter after the liquid discharge needs to be reinjected with new liquid, so a water adding pipeline 14 is provided on the same side. Both the buffer pipeline 12 and the water supply pipeline 14 are supplied with liquid, and an exchange valve 15 is arranged between the buffer pipeline 12 and the water supply pipeline 14, which can share a water storage or water inlet pipeline. The bottom of the pool biological scrubber filter is set to be inverted for easy discharge. A first grid filter 9 is arranged at the bottom of the biological washing filter, which can filter the sediment and the suspended matter when the liquid is discharged, and the filtered liquid enters the recovery pipeline 10 for recycling or discharge. In order to ensure the normal operation of the equipment, a single-port valve 11 is provided at the junction of the compressed exhaust pipe 7 and the recovery pipe 10, and the two branch pipes are respectively injected into the main pipe, and the gas and liquid are separately recovered. Then it is purified, collected and used to discharge. The recovery pipeline 10 can also be directly connected to the sewage pipeline.

The whole device of the present invention is simple and easy to operate, and the odor pollutant purification effect and recovery effect after multi-stage treatment such as gas decompression, bubbling jet washing, biological filtration, chlorine dioxide spray filtration, gas compression, gas-liquid exchange discharge recovery, etc. obvious. The filler used in the biofilter is waste utilization, which is economical and environmentally friendly. At the same time, the gas and waste liquid are processed and recovered to the maximum extent, ensuring the safety, stability and pollution-free implementation of the whole process.

Claims (8)

1. A combined multifunctional odor biological purification recovery device, with an integrated structure, comprising: A recovery pipe is provided at the bottom of the recovery device, and an exhaust pipe is provided at the top; The top of the recovery pipeline is a biological washing tank, the biological washing tank is provided with a water supply pipeline, the bottom of the biological washing tank is provided with a grid filter, and the bottom of the grid filter is a recovery pipeline; The exhaust pipeline at the top of the recovery device is connected to the recovery pipeline through a compressor; There is a bubbling spray in the biological washing tank, which is a combination of one or more pipes. The bubbling spray is connected to a blower. There is a gas decompression device between the blowers to control the size of the air flow and prevent the liquid from flowing back; There is a biological filter above the biological washing tank, which is composed of upper and lower layers of air filter plates, and each layer of air filter plates is provided with a packing chamber; A porous shower head is arranged above the upper biological filter, and the porous shower head is connected with a buffer pipeline for water supply and spray filtration. 2. The combined multifunctional odor biological purification and recovery device according to claim 1, wherein the side of the packing chamber of the biological filter is provided with a sliding sealing plate to facilitate the replacement of packing, and the air filter plate adopts zeolite processing composite plate. 3. The combined multifunctional odor biological purification recovery device according to claim 1, wherein the filler in the filler chamber of the lower air filter plate is a mixture of oyster shells, egg shells and corncobs in a volume ratio of 1:1:2 ; The filler in the filler chamber of the upper air filter plate is a mixture of compost, peat, and sawdust in a volume ratio of 2:1:1. 4. The combined multifunctional odor biological purification and recovery device according to claim 1, wherein the buffer pipeline connected to the porous shower head and the water supply pipeline of the biological washing tank are connected to the same reservoir through an exchange valve. 5. The combined multifunctional odor biological purification and recovery device according to claim 1, wherein the exhaust pipeline and the recovery pipeline are connected through a single-port valve. 6. Utilize the method for waste gas recovery of the combined multifunctional type odor biological purification recovery device described in claim 1: The gas is sent to the bubbling spray head by the blower, and the gas is dispersed into multiple streams and injected into the water to dissolve the soluble substances in the biological washing tank. The washed gas passes through the air filter plate of the biological filter and the upper and lower fillers. After being filtered in the chamber, it is washed by the porous shower head. The washed gas enters the exhaust pipe and is compressed by the compressor and sent to the recovery pipeline to achieve the capture and recovery of the gas. After recovery, it can be reprocessed or discharged; The sediment and suspended matter in the biological washing tank are filtered by the grid filter, and the filtered liquid enters the recovery pipeline for recycling or discharge. 7. The method according to claim 6, wherein the biological washing tank is supplied with liquid by a water adding pipeline; the porous shower head is supplied with liquid by a buffer pipeline. 8. The method according to claim 6, wherein the gas-liquid exchange discharge collection device is to discharge and collect the liquid discharged from the biological washing tank and the compressed gas in the recovery pipeline.