CN110639359A - Intelligent membrane covering biological deodorization system - Google Patents

Abstract

The purpose of the present invention is to provide an intelligent membrane covering biological deodorization system, which solves the problems existing in the treatment of malodorous gas in the prior art. Specifically, it relates to an intelligent membrane-covered biological deodorization system, which comprises: an odor monitoring unit, an exhaust air control unit, a membrane-covered biological filtration deodorization unit, and an intelligent control unit. The deodorization of the invention is suitable for the odor treatment of organic waste treatment enterprises, livestock and poultry farms, sewage treatment plants, chemical enterprises and other units, and is also suitable for the modification of existing biological filtration devices by applying the invention. It has the advantages of intelligent deodorization, good deodorization effect, all-weather operation, convenient maintenance and energy saving.

Description

An intelligent membrane covering biological deodorization system

technical field

The invention belongs to the technical field of environmental protection and healthy breeding of livestock and poultry, and relates to an intelligent membrane covering biological deodorization system.

Background technique

Malodor refers to any odor that can stimulate people's olfactory organs, generally cause unpleasantness or disgust, and damage human health. Odor gas is mainly emitted from livestock and poultry breeding, urban life and industrial production, and is produced in livestock and poultry breeding, waste treatment, sewage treatment, food and seafood processing, slaughtering, metallurgy, petroleum smelting, pharmaceutical, chemical and other industries. , which is extensive, in which the concentrations of NH ₃ , H ₂ S and CH ₃ SH are the main odor components. Odor gas pollution is one of the seven major environmental hazards in the world. It has become one of the major problems of environmental pollution and can also cause the global greenhouse effect. All countries in the world have attached great importance to the control and treatment of odor gas pollution.

Malodorous gas can cause the body to reflexively inhibit inhalation and hinder normal respiratory function; loss of sense of smell, which in turn makes the regulation of cerebral cortex excitation and inhibition dysfunctional; loss of appetite, nausea and vomiting, may lead to digestive system dysfunction and endocrine system disorders, Affect the body's metabolic activities; irritation of the eyes, nose and throat, as well as symptoms such as cough, headache, trouble, depression, etc. Malodorous gas can also cause animal stress, greatly affect the growth rate and feed-to-meat ratio of livestock and poultry, and reduce the disease resistance of livestock and poultry. At present, there are three main methods to control malodorous gas: physical method, chemical method and biological method. The physical method does not change the chemical properties of the odor, and uses other substances to mask the odor, dilute it, or transfer the odor substance from the gas phase to the liquid or solid phase. The chemical method is to use other substances to chemically react with odorous substances to change their chemical structure and convert them into odorless substances or substances with lower odors. For a long time in the past, physical and chemical deodorization was mainly used, mainly through acid-base absorption, chemical adsorption and catalytic combustion. Although these methods are effective, they all have the defects of complex process, large equipment investment, high technical requirements, easy to cause secondary pollution, difficult regeneration, complex post-treatment process and high energy consumption.

Biological deodorization is a new type of deodorization technology that has been gradually developed since the 1950s. It uses a deodorization filter bed to absorb the odor in the airflow, and then is further adsorbed by microorganisms that grow on the surface of the deodorization filter bed packing. Metabolic activities convert odors into CO ₂ , H ₂ O, cell metabolites and inorganic salts, so as to achieve odorless and harmless purposes. Compared with the traditional physical and chemical treatment methods, the biological deodorization method has many advantages, such as simple installation, low investment, low energy consumption, quick effect, low operating cost, high deodorization efficiency, and can avoid or reduce secondary pollution. The green environmental protection method is gradually becoming the mainstream deodorization technology.

In actual use, it is found that there are still some shortcomings in the current biological deodorization method: (1) The deodorization effect of the open biological deodorization filter is easily affected by adverse weather, and rainfall can easily cause the ventilation gap in the deodorization filter bed packing to be blocked, resulting in the filter bed The pressure increases; in hot weather, the water in the deodorization filter bed loses quickly, and the odor adsorption capacity is poor, which can lead to a decrease in the deodorization effect; (2) It is easy to grow weeds, and a large number of grass seeds will be brought into biological deodorization with the wind In the filter tank, weeds grow, and the weed roots growing on the surface of the biological deodorization filter will block the ventilation gap and reduce the deodorization efficiency. Microorganisms have a great influence on the deodorization effect to a certain extent; (3) During the process of deodorization, bacteria, fungal spores and bioaerosols in the biological filter are easily dispersed into the air with the purified air, which is harmful to the health of employees and surrounding residents. (4) Most odor generating sites lack real-time odor monitoring and processing systems, and only turn on the exhaust when employees are working or use regular exhaust to treat the odor in the site, so that the odor concentration cannot be maintained at all times. Within a reasonable range, it will also cause unnecessary power consumption.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an intelligent membrane covering biological deodorization system, which solves the problems existing in the treatment of malodorous gas in the prior art.

The technical scheme adopted in the present invention is as follows:

The invention provides an intelligent membrane-covered biological deodorization system, which comprises: an odor monitoring unit, an exhaust air control unit, a membrane-covered biological filtration deodorization unit, and an intelligent control unit. The invention is suitable for odor treatment of organic waste treatment enterprises, livestock and poultry farms, sewage treatment plants, chemical enterprises and other units, and is also suitable for applying the invention to transform existing biological filtering devices.

The odor monitoring unit is composed of one or more odor detectors (1); the exhaust air control unit is composed of a fan controller and an exhaust air fan (2); the membrane-covered biological filtration removes The odor unit includes a biological filtering and deodorizing device, a cover film support frame (3), and a cover film; the intelligent control unit is composed of an Internet of Things host, a processor and an intelligent control program.

The odor monitoring unit is composed of one or more odor detectors (1). The odor detector (1) is an explosion-proof and waterproof detector capable of simultaneously monitoring the concentration of NH ₃ , H ₂ S and CH ₃ SH. The odor detector is connected to the IoT host of the intelligent control unit. In the same site, three or more odor detectors should be installed at different positions 1.5m to 2.5m from the ground.

The exhaust air control unit is composed of a fan controller and an exhaust fan (2). The fan controller is connected to the IoT host of the intelligent control unit, and the IoT host receives the odor monitoring data monitored by the odor monitoring unit in real time, and uploads operating parameters such as the opening and closing time of the fan (2) to the intelligent control unit. The fan controller has three control modes: timing, automatic, and WeChat remote control, and a local save mode is set, and the disconnection of the network does not affect the fan control. The exhaust air volume of the exhaust fan (2) is determined by the treatment site. Generally, 5 minutes to 30 minutes are required to complete the treatment of the odor in the site, preferably 15 to 20 minutes.

The membrane-covered biological filtration and deodorization unit comprises an exhaust fan (2), a biological filtration and deodorization device, a covering membrane supporting frame (3), and a covering membrane. The design parameters of the biological filter tank are designed according to the odor empty bed contact time (ECBT) of 0.75 min to 1.50 min, the packing height of 0.8 m to 1.5 m and the exhaust air volume of the exhaust fan (2). The biological filtration deodorization device is composed of a cement anti-seepage floor (12), hollow bricks (5), a porous support material (6), a deodorization filter bed (7), a deodorization filter bed humidity control unit and a side wall (4). . The thickness of the cement anti-seepage ground (12) should be ≥ 10cm, the minimum design slope of the ground is 0.003, the end away from the fan (2) is the lowest, and a sewage drain with a diameter of 5cm to 20cm is installed under the wall at the end away from the fan (2). tube (10). The hollow bricks (5) are placed on the ground, and the holes of the hollow bricks (5) face the fan (2) for carrying the perforated support material (6) and the deodorizing filter bed (7). The perforated support material (6) is a FRP grating with a thickness of more than 25mm and a single cell size of no more than 50mm×50mm, which is covered with a layer of nylon or plastic mesh with a single cell size of no more than 10mm×10mm. The deodorizing filter bed (7) is filled by mixing corncob (less than 10 cm in length) and decomposed compost at a ratio of 60:40 to 80:20 (w/w). The side wall (4) is generally composed of a 24cm thick brick wall, the inner side is treated with anti-seepage treatment, and the height of the wall is not lower than the height of the filler in the deodorizing filter bed (7). A cover film support frame (3) is installed on the top of the biological filtration and deodorization device, and the frame material can be glass fiber rods, galvanized steel pipes or other corrosion-resistant materials. A film groove is installed around the side wall (4) of the biological filtration and deodorization device at a distance of 0.3m to 0.5m from the top. The cover film is fixed in the film grooves around the side wall (4) through the circlip. The humidity control unit of the deodorizing filter bed (7) is composed of a humidity monitor (8), a humidification unit (9) and an IoT host. The humidity monitor (8) is 50cm long and is inserted into the center of the filter bed (7) for real-time monitoring of the humidity in the center of the filter bed (7); the humidification unit (9) consists of a solenoid valve and a drip irrigation belt or a drip irrigation belt distributed on the top of the filter bed (7). Micro-spray composition.

The odor detector (1) is installed on a bracket 1 m high from the biological filtration and deodorization device, and is used to monitor the odor treatment effect in real time. The odor from the odor generating site is compressed by the exhaust fan (2) and enters under the porous support material (6) of the biological filtration and deodorization device, and passes through the porous support material (6) and the deodorizing filter bed sequentially from bottom to top. (7) Packing and covering film, the odor is adsorbed by the water layer on the surface of the packing when passing through the deodorizing filter bed (7), and then adsorbed, absorbed and converted into CO ₂ , H ₂ O, and cell metabolites by the microorganisms attached to the surface of the packing and inorganic salts, so that the odor is converted into an odorless or less odorous gas and then discharged.

The Internet of Things host supports LoRa (long-distance radio)/WIFI/GPRS/3G/4G communication transmission, and uploads the odor gas concentration, humidity monitoring and processed gas data in the odor generating site to the intelligent processing unit in real time, and receives The intelligent processing unit or the WeChat client command controls the exhaust fan (2) and the humidification unit (9), and at the same time uploads the data to the cloud, and the cloud provides various information of the system to the WeChat client. The intelligent control unit is composed of an Internet of Things host, a processing workstation and an intelligent control program. The intelligent deodorization control program and the intelligent humidity control program are installed in the processing workstation. The intelligent deodorization control program is to open the exhaust air for biological deodorization when the NH ₃ concentration is higher than 15mg/m ³ or the H ₂ S concentration is higher than 10mg/m ³ or the CH ₃ SH concentration is higher than 0.1mg/m ³ _; The concentration is lower than 5mg/m ³ , the H ₂ S concentration is lower than 5mg/m ³ , the CH ₃ SH concentration is lower than 0.05mg/m ³ or the NH ₃ concentration and the H ₂ S concentration are both lower than 5mg/m ³ , or the fan ( 2) After running for more than 30min, turn off the exhaust air. The intelligent humidity control program is to open the solenoid valve to start humidification when the central humidity of the filter bed (7) is less than 50%; and close the solenoid valve to stop humidification when the central humidity concentration of the filter bed (7) is higher than 60%. The WeChat client receives various information in the system from the cloud, and can remotely monitor the system and manually perform operations such as ventilation and humidification.

The cover film is composed of a hydrophobic and waterproof nylon outer layer fabric with anti-ultraviolet rays, a microporous polymer waterproof and breathable microporous film middle layer with hydrophobicity and oleophobicity, and an anti-acid and alkali-resistant and hydrophilic treatment. Tear the inner fabric composition. The Denier value of the outer nylon fabric is 250D to 600D. The inner fabric can be made of nylon or tricot (TRICOT) tricot tricot lightweight inner fabric. The cover film has the following characteristics: thickness: 0.30～0.50mm; gram weight: 200～300g/m ² ; UV protection performance: UPF value 50+, T(UVA) _AV /%<5; 200Pa air permeability (m ³ / m ² /h) is 6000-1000; tear strength (N): 1600-2000; anti-splashing grade: 5; water pressure resistance: 8000-10000.

The microporous polymer waterproof and breathable microporous membrane can be made of any kind of polymer material, such as polyethylene, polypropylene, polyurethane, polyvinyl chloride, polyvinylidene chloride, polyester fluorinated polyolefin or other polyolefin. Fluoropolymers such as polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), etc. due to their inherent hydrophobicity, excellent processing characteristics, temperature resistance, chemical inertness, and resistance to microbial attack properties and UV aging resistance are preferred. Most preferred are polytetrafluoroethylene microporous membranes. Pore diameter of the microporous membrane: 1 μm to 9 μm, preferably 2.5 μm to 7.5 μm.

All seams and seams of the cover film are sealed with hot air seam sealing process or soft transparent glue. The surrounding of the cover film is wrapped with PVC anti-aging and rainproof mesh cloth or other waterproof and wear-resistant fabrics, and the wrapping width is 0.4m to 1.0m. The suture between the cover film and the outer side of the hemming is sewed with a nylon or polyester fiber woven tape with a width of 2.5cm-10cm and a length of 60cm-150cm every 0.5m-1m to form a U-shaped handle.

The beneficial effects of the present invention are:

1. Intelligent deodorization and health protection

The odor concentration is monitored in real time through the odor detector at the odor generating site, the odor threshold range that affects the health of employees or livestock and poultry is set in the intelligent control program, and the operation of the deodorization system is intelligently started to make the odor concentration in the site. Always keep it within a reasonable concentration to protect the health of employees or livestock and poultry.

2. Good deodorizing effect

A polymer waterproof and breathable microporous membrane with a core pore size of 1 μm to 9 μm is covered above the biological filtration and deodorization device, which can ensure the free passage of gas. The pore size of the micropores is one percent of the smallest water droplet, which traps a large amount of water in the inner layer of the membrane. And after the cover film is hydrophilic, the inside of the cover film will condense water vapor to form a layer of water film. The odor that has not been treated by the biological filtration and deodorization device is adsorbed by this layer of water film, and then falls into the deodorization filter bed. Microbial decomposition of the filler surface. The removal effect of water-soluble odors such as NH ₃ and H ₂ S can be improved by more than 10%.

3. All-weather operation, saving water

The cover film has a good rainproof effect. As an effective physical barrier, it avoids the blockage of the deodorization filter bed packing in the biological filtration and deodorization device caused by the heavy rainfall in the rainy season, the pressure of the filter bed increases, and the deodorization effect is reduced. In the hot summer, the covering film can effectively block the loss of water in the biological filtration and deodorization device, which can save a lot of water for humidification of the deodorization filter bed.

4. No need for weeding, easy maintenance

The mulch film is opaque to light, and at the same time blocks the possibility of grass seeds entering the biological filtration and deodorization device. There are no weeds in the deodorization filter bed, and no weeding is required, which greatly reduces maintenance costs and avoids the removal of weeds caused by chemical weeding. Detrimental consequences of reduced odor effects. The biological filter deodorization device only needs to open the circlip on one side during daily inspection, which is convenient to use.

5. Reduce the leakage of bacteria, fungal spores and bioaerosols

The cover film fixed above the biofiltration deodorization device acts as a physical barrier. Through its unique microporous filtration structure, it can effectively block the passage of bacteria, fungal spores and bioaerosols. hazards to people and surrounding residents.

6. Real-time control to save energy consumption

The intelligent membrane-covered deodorization system can realize real-time monitoring and treatment of odor, and get rid of the dilemma of poor deodorization effect and high energy consumption of regular control of exhaust air in the past.

7. Centralized data processing, saving investment and remote monitoring

The invention adopts the Internet of Things host to connect all odor concentration, humidity sensors, exhaust fans, humidification units and intelligent control workstations in the site, and only one intelligent control unit is required to meet all information processing, exhaust and Humidification control does not need to be equipped with a PLC for each, which saves a lot of investment and realizes the unified management of each unit of the site. There is no need to install an APP, and the WeChat client has strong applicability, which can remotely monitor and control the exhaust air and deodorization filter bed humidification.

8. Upgrading and improving solutions for existing biological deodorization devices

According to the present invention, an odor detection unit, an intelligent control unit, or a membrane covering can be provided for the existing biological deodorization device with upgrading and transformation schemes.

Description of drawings

Figure 1: Front View of Smart Film Covered Biological Deodorization System

Figure 2: Side View of Smart Film Covered Biological Deodorization System

Detailed ways

Example

Test site: Organic fertilizer processing site of Rongfeng Farmer Professional Cooperative, Changchun City, No. 6 Community, Yinjia Village, Shuangyingzi Township, Shuangyang District, Changchun City (N43°35′55″, E125°37′57″).

The fermentation workshop is 55m×15m×6m (L×W×H), the total volume is 4950m ³ , the air inlet is set at the top of the workshop, and the gas exhaust fan (2) has a power of 5.5kw and an air volume of 275m ³ /min. Install 3 odor detectors at the entrance and the middle 1.5m from the ground.

The odor detector (1) is an explosion-proof and waterproof detector capable of simultaneously monitoring the concentration of NH ₃ , H ₂ S and CH ₃ SH. The odor detector (1) is connected to the Internet of Things host of the intelligent control unit. In the same site, three odor detectors should be installed at different positions 1.5m to 2.5m from the ground.

The membrane-covered biological filtration and deodorization unit comprises an exhaust fan (2), a biological filtration and deodorization device, a covering membrane supporting frame (3), and a covering membrane. The design parameters of the biological filter tank are designed according to the odor empty bed contact time (ECBT) of 0.75 min to 1.50 min, the packing height of 0.8 m to 1.5 m and the exhaust air volume of the exhaust fan (2). The biological filtration deodorization device is composed of a cement anti-seepage floor (12), hollow bricks (5), a porous support material (6), a deodorization filter bed (7), a deodorization filter bed humidity control unit and a side wall (4). . The thickness of the cement anti-seepage ground (12) should be ≥ 10cm, the minimum design slope of the ground is 0.003, the end away from the fan (2) is the lowest, and a sewage drain with a diameter of 5cm to 20cm is installed under the wall at the end away from the fan (2). tube (10). The hollow bricks (5) are placed on the ground, and the holes of the hollow bricks (5) face the fan (2) for carrying the perforated support material (6) and the deodorizing filter bed (7). The perforated support material (6) is a FRP grating with a thickness of more than 25mm and a single cell size of no more than 50mm×50mm, which is covered with a layer of nylon or plastic mesh with a single cell size of no more than 10mm×10mm. The deodorizing filter bed (7) is filled by mixing corncob (less than 10 cm in length) and decomposed compost at a ratio of 60:40 to 80:20 (w/w). The side wall (4) is generally composed of a 24cm thick brick wall, the inner side is treated with anti-seepage treatment, and the height of the wall is not lower than the height of the filler in the deodorizing filter bed (7). A cover film support frame (3) is installed on the top of the biological filtration and deodorization device, and the frame material can be glass fiber rods, galvanized steel pipes or other corrosion-resistant materials. A film groove is installed around the side wall (4) of the biological filtration and deodorization device at a distance of 0.3m to 0.5m from the top. The cover film is fixed in the film grooves around the side wall (4) through the circlip. The deodorizing filter bed humidity control unit is composed of a humidity monitor (8), a humidification unit (9) and an IoT host. The humidity monitor (8) is 50cm long and is inserted into the center of the filter bed (7) for real-time monitoring of the humidity in the center of the filter bed (7); the humidification unit (9) consists of a solenoid valve and a drip irrigation belt or a drip irrigation belt distributed on the top of the filter bed (7). Composed of micro-spray.

The set odor empty bed contact time (ECBT) was 1 min, and the volume of the deodorizing filter bed (7) was calculated to be 275 m ³ . Set the packing height to 1m, the area of the deodorizing filter bed (7) is 275m ² , and the surface load of the deodorizing filter bed (7) is 60m ³ ·m ^-2 ·h ^-1 . The size of the deodorizing filter bed (7) in the biological filtration deodorizing device is 25m×11m (L×W) of the side wall (4). The thickness of the cement anti-seepage floor (12) in the biological filtration and deodorization device is 10cm, the minimum design slope of the floor is 0.006, the end away from the fan (2) is the lowest, and a 5cm diameter sewage discharge is installed under the wall at the end away from the fan (2). tube (10). The hollow brick (5) is placed on the cement impermeable ground (12), and the hole of the hollow brick (5) faces the fan (2), and the fan (2) ventilates the system through the air inlet (11); Pore support material (6) and deodorizing filter bed (7). The perforated support material (6) is a FRP grating with a thickness of 25mm and a single cell size of 50mm×50mm, which is covered with a layer of nylon or plastic mesh with a single cell size of 10mm×10mm. The deodorizing filter bed (7) is filled with corn cob (less than 10 cm in length) and decomposed compost in a ratio of 60:40 to 80:20 (w/w). The side wall (4) is composed of a 24cm thick brick wall, the inner side is treated with anti-seepage, and the height of the wall is 1.2m. A cover film support frame (3) is installed on the top of the biological filtration and deodorization device, and the frame material is a galvanized steel pipe welded with a film clamping groove. A film groove is installed around the side wall (4) of the biological filtration and deodorization device at a distance of 0.3 m from the top. The cover film is fixed in the film grooves around the frame and the side wall (4) through the circlip. The humidity control unit of the deodorizing filter bed (7) is composed of a humidity monitor (8), a humidification unit (9) and an IoT host. The humidity monitor (8) is 50 cm long and is inserted in the center of the filter bed (7). The humidification unit (9) is composed of a solenoid valve and a micro-spray distributed on the top of the filter bed (7). The humidity monitor (8) the filter bed (7) the humidification unit (9) the filter bed (7) the odor detector (1) is installed on a bracket 1 m high from the biological filtration and deodorization device.

The odor detector (1), the fan (2) controller and the deodorizing filter bed humidity control unit are respectively connected to the IoT host, and the IoT host supports LoRa (long-distance radio)/WIFI/GPRS/3G/4G communication transmission, The odor gas concentration, humidity monitoring and processed gas data in the odor generating site are uploaded to the intelligent processing unit in real time, and the intelligent processing unit or WeChat client commands are received to control the exhaust fan (2) and the humidification unit (9), and at the same time The data is uploaded to the cloud, and the cloud provides various information of the system to the WeChat client. The intelligent deodorization control program is when the NH ₃ concentration is higher than 15mg/m ³ or the H ₂ S concentration is higher than 10mg/m ³ , the exhaust air is turned on for biological deodorization; when the NH ₃ concentration is lower than 5 mg/m ³ , the H ₂ S When the concentration is lower than 5mg/m ³ , or both the NH ₃ concentration and the H ₂ S concentration are lower than 5mg/m ³ , or the fan (2) runs for more than 30 minutes, the exhaust air is turned off. The intelligent humidity control program is to open the solenoid valve to start humidification when the central humidity of the filter bed (7) is less than 50%; and close the solenoid valve to stop humidification when the central humidity concentration of the filter bed (7) is higher than 60%. The WeChat client receives various information in the system from the cloud, and can remotely monitor the system and manually perform operations such as ventilation and humidification.

It can be seen from Table 1 that the removal effect of NH ₃ and H ₂ S can be increased by 13.17% and 10.27% respectively after membrane covering on the biological deodorization filter device, which effectively improves the treatment effect of the biological deodorization filter device on malodorous gas. .

Table 1 Comparative test results of odor gas removal effect before and after film covering

Claims (9)

1. An intelligent membrane-covered biological deodorization system, characterized in that: the system comprises an odor monitoring unit, an exhaust air control unit, a membrane-covered biological filtration deodorization unit, and an intelligent control unit. 2. The biological deodorization system according to claim 1, characterized in that: the odor monitoring unit is composed of one or more odor detectors (1); the exhaust air control unit is composed of a fan controller and an exhaust fan (2); the membrane-covered biological filtration deodorization unit is composed of a biological filtration deodorization device, a covering membrane supporting frame (3), and a covering membrane; the intelligent control unit is composed of an Internet of Things host , a processor and an intelligent control program; wherein, the odor detector (1) and the fan controller are respectively connected to the Internet of Things host, and the Internet of Things host collects the odor detector data in real time and uploads it to the processor, and at the same time, the receiving processor The command controls the exhaust fan (2). 3. The biological deodorization system according to any one of claims _1-2 , wherein the odor detector has explosion-proof and waterproof detection for simultaneously monitoring _NH3 concentration, H2S concentration and _CH3SH concentration The odor detector is installed on the bracket above the biological filtration and deodorization device to monitor the odor treatment effect in real time. 4. The biological deodorization system according to any one of the preceding claims, characterized in that: the membrane-covered biological filtration and deodorization unit comprises an exhaust fan (2), a biological filtration and deodorization device, and a membrane-covered support frame (3) , cover film. 5. The biological deodorizing system according to claim 4, characterized in that: the biological filtering and deodorizing device comprises an impermeable floor (12), a hollow brick (5), a porous support material (6), and a deodorizing filter bed (7) , Deodorizing filter bed humidity control unit and side wall (4). 6. The biological deodorizing system according to claim 4, characterized in that: the exhaust fan (2) is arranged on one end of the anti-seepage ground (12), and the hollow brick (5) is placed on the anti-seepage ground (12), And the hole of the hollow brick faces the fan, and is used to carry the perforated support material (6); the deodorizing filter bed (7) is placed on the perforated support material (6); the side wall (4) is treated with anti-seepage treatment, and its height is high at the height of the deodorization filter bed; a cover film support frame (3) is installed on the top of the biological filtration and deodorization device, and a cover film is arranged above the frame; the deodorization filter bed humidity control unit includes a humidity monitor (8) and a humidification unit (9), and the humidity The monitor (8) is inserted into the center of the filter bed for real-time monitoring of the humidity in the center of the filter bed; the humidification unit (9) is arranged on the top of the deodorizing filter bed (7), and is composed of a solenoid valve and a drip irrigation belt or a micro-spray; the deodorizing filter bed The humidity control unit is connected to the host of the Internet of Things, and the host of the Internet of Things collects the humidity data in the center of the filter bed and uploads it to the processor, and at the same time accepts the instructions of the processor to control the humidification unit. 7. The biological deodorizing system according to claim 4, characterized in that: the exhaust fan is arranged at one end of the cement impermeable ground (12), and the impermeable ground (12) is designed with a certain slope, away from the fan (12). 2) One end is the lowest, and a drain pipe (10) is installed under the wall at the end away from the fan. 8. The biological deodorizing system according to any one of the preceding claims, characterized in that: the covering film is made of a hydrophobic and waterproof nylon outer layer fabric with anti-ultraviolet, and a microporous high-density hydrophobic and oleophobic, from outside to inside, respectively. The middle layer of molecular waterproof and breathable microporous membrane is composed of a tear-resistant inner layer fabric treated with acid and alkali resistance and hydrophilicity. 9. The biological deodorizing system according to claim 8, wherein the microporous polymer waterproof and breathable microporous membrane is made of polymer material, and the material is selected from polyethylene, polypropylene, polyurethane, polyvinyl chloride , polyvinylidene chloride, polyester fluorinated polyolefin or other polyolefins; more preferably the material is selected from fluoropolymers, specifically selected from polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), polytetrafluoroethylene Ethylene (PTFE).

Images