CN108176210B - Treatment method and device for hardly-degradable malodorous gas - Google Patents

Treatment method and device for hardly-degradable malodorous gas Download PDF

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Publication number
CN108176210B
CN108176210B CN201810180030.3A CN201810180030A CN108176210B CN 108176210 B CN108176210 B CN 108176210B CN 201810180030 A CN201810180030 A CN 201810180030A CN 108176210 B CN108176210 B CN 108176210B
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gas
reaction zone
water level
water
malodorous gas
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CN108176210A (en
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刘建伟
陈雪威
高柳堂
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75Multi-step processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • B01D53/85Biological processes with gas-solid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/95Specific microorganisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/80Type of catalytic reaction
    • B01D2255/802Photocatalytic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804UV light
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The invention provides a method and a device for treating difficultly-degradable malodorous gas. The method comprises the following steps: a pretreatment zone, a biological-photocatalyst combined reaction zone and an adsorption reaction zone; the pretreatment area receives the difficultly degraded malodorous gas, particle pollutants in the gas are intercepted by the activated carbon non-woven fabric arranged in the pretreatment area, and the difficultly degraded malodorous gas is subjected to humidification, temperature adjustment and particulate matter removal pretreatment by the water level sensor and the microbial agent; the biological-photocatalyst combined reaction zone processes the malodorous gas through biodegradation of microorganisms and photo-oxidation catalysis, and the malodorous gas purified by the biological-photocatalyst combined reaction zone enters an adsorption reaction zone; the adsorption reaction zone carries out adsorption treatment on the malodorous gas by granular active carbon, and the gas reaching the standard after the adsorption treatment of the active carbon is discharged by an exhaust funnel.

Description

Treatment method and device for hardly-degradable malodorous gas
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a method and a device for treating difficultly-degraded malodorous gas.
Background
Chemical industry, petrifaction, pharmacy, package printing, electronics, mechanical manufacturing, food processing and other industries can discharge a large amount of waste gas containing inorganic malodorous substances and volatile organic compounds, wherein a large amount of malodorous substances are difficult to biodegrade, and the atmospheric environment is seriously damaged. The conventional malodorous gas treatment device is mainly based on filtration, separation, adsorption, catalysis, combustion and biological treatment technologies.
The principle of the biological treatment technology is to utilize microorganisms to biologically oxidize and degrade pollutants in malodorous gas into harmless or low-harmful substances. The collected malodorous gas passes through the filler with microorganism growing under proper conditions, and the pollutant is firstly absorbed by the filler and then is oxidized and decomposed by the microorganism on the filler, thereby completing the processing process of the malodorous gas. The biological treatment method has the advantages of simple process, convenient management and maintenance, mild reaction conditions (normal temperature and normal pressure), low energy consumption, low investment and operation cost, higher pollutant removal rate, no secondary pollution and the like, and particularly shows the economical efficiency and superiority when treating the malodorous gas with high flow rate and low concentration. For the treatment of waste gas containing volatile organic compounds, the biological treatment technology is widely applied.
However, in the industrial degradation-resistant malodorous gas discharged from various industries, because of containing more chemical substances which have an inhibiting effect on microorganisms, the problems of low treatment efficiency, substandard treatment, long gas retention time of the device and the like can occur when the gas is directly treated by adopting a single technology.
Disclosure of Invention
The invention provides a method and a device for treating difficult-to-degrade malodorous gas, aiming at overcoming the defects that the existing industrial difficult-to-degrade malodorous gas treatment device has low treatment efficiency, is difficult to realize standard emission, has long gas retention time, high investment and operation cost and the like.
In order to achieve the purpose, the invention adopts the following technical scheme.
According to an aspect of the present invention, there is provided a treatment apparatus for malodorous gas difficult to degrade, comprising: a pretreatment zone, a biological-photocatalyst combined reaction zone and an adsorption reaction zone;
the pretreatment area is used for receiving and pretreating the difficultly-degradable malodorous gas, intercepting part of particulate matters in the malodorous gas by an activated carbon non-woven fabric arranged inside the pretreatment area, humidifying the difficultly-degradable malodorous gas by a water level sensor 1 and a microbial agent, adjusting the temperature, removing the pretreatment of the particulate matters and degrading part of malodorous gas pollutants, and enabling the gas treated by the pretreatment area to enter a biological-photocatalyst combined reaction area;
the biological-photocatalyst combined reaction zone comprises a mixed packing zone I, a humidifying spraying zone II, an atomizing spraying zone III, a demisting zone IV, a photocatalyst reaction zone V, a spraying liquid supply system and an overhaul manhole 1, and is used for carrying out packing absorption and adsorption, biodegradation and photochemical oxidation system purification on malodorous gas, and the malodorous gas purified by the biological-photocatalyst combined reaction zone enters the adsorption reaction zone;
adsorption reaction district, adsorb the processing through granule active carbon to foul gas, gas gets into the active carbon drawer through filtering, gas distribution module, difficult degradation foul gas after the adsorption of granule active carbon can be up to standard, gas after up to standard is taken out through the draught fan, is discharged by the aiutage.
Further, the pretreatment area comprises an activated carbon non-woven fabric, an air inlet 1, a water storage tank, a drain pipe and a water level sensor 1;
the water level sensor 1 is arranged in the pretreatment area, the air inlet 1 is arranged at the bottom of the side surface of the device, the low point of the air inlet 1 is higher than or equal to the inlet of the water level sensor 1, and the front end of the air inlet 1 is provided with an activated carbon non-woven fabric;
when the water level reaches the upper limit of the water level sensor 1, the water level sensor 1 transmits an upper limit water level signal to a control center water level controller, the water level controller is connected with a power supply of a drainage pump, and the drainage pump works; when the water level reaches the lower limit of the water level sensor 1, the water level sensor 1 transmits a water level lower limit signal into a control center water level controller, the water level controller cuts off the power supply of a drainage pump, and the drainage pump is stopped;
the drain pipe is positioned at the bottom of the side surface of the device, the bottom of the flange is flush with the bottom of the device, and the microbial inoculum collected by the water storage tank is drained back to the spraying liquid supply system for recycling.
Further, the biological-photocatalyst combined reaction zone comprises a mixed filler zone I, a humidifying spraying zone II, an atomizing spraying zone III, a demisting zone IV, a photocatalyst reaction zone V, a spraying liquid supply system and an inspection manhole 1; the mixed filler area I comprises an air distribution plate bracket 1, an air distribution plate 1, a temperature sensor, a humidity sensor, a pH sensor and mixed fillers; the humidifying spraying area II comprises a spraying pipe, a humidifying spray head and a guide plate; the atomization spraying area III comprises a spraying pipe, an atomization nozzle and an airflow crutch plate; the demisting area IV comprises demisting fillers, an air distribution plate bracket 2 and an air distribution plate 2; the photocatalyst reaction zone V comprises an ultraviolet light tube, a photocatalytic filter screen and a lamp tube base;
the humidifying spray head is positioned above the mixed filler and fixed on the lower surface of the guide plate, the spraying angle is 100-120 degrees, and the spraying area uniformly covers the upper surface of the mixed filler;
the airflow crutch plate is detachable and is hung at the top of the biological-photocatalyst combined reaction zone device through a steel wire; the upper surface of the airflow crutch plate is provided with a spray pipe, and the lower surface of the airflow crutch plate is fixed with an atomizing nozzle; the bottom of the airflow crutch plate is in an inner buckle shape;
the demisting area is filled with filamentous coconut fiber filler, and the diameter of the filler is 0.5-1.5 mm;
the lamp tube base is fixed on the outer side of the shell of the biological-photocatalyst combined reaction zone, and a sealing gasket is additionally arranged between the lamp tube base and the shell and used for supporting the ultraviolet lamp tube;
the photocatalytic filter screen is made of foamed nickel and sprayed with titanium dioxide powder, and the thickness of the photocatalytic filter screen is 3-8 mm;
the pH sensor is positioned in the middle of the mixed filler and is used for detecting the pH value of the mixed filler;
the temperature and humidity sensors are positioned in the middle of the mixed filler and are respectively used for detecting the temperature and humidity of the mixed filler.
Further, the spray liquid supply system comprises an inspection manhole 2, a device shell, a water inlet 1, a water return pipe, a valve 1, a drainage pump, a one-way valve, a valve 2, a spray pump, a filter, a water level sensor 2, a water inlet electromagnetic valve and a water inlet 2;
the valve 1 is connected with a drainage pipe of the pretreatment area and is normally opened in a working state;
the drainage pump is a vertical water pump;
the one-way valve is connected with the outlet of the drainage pump;
the spraying liquid supply system is provided with an inspection manhole 2, a water inlet 1, a water inlet 2, a water outlet and a water level sensor;
the water level sensor 2 is positioned in the spray liquid supply system, and the water level sensor 2 is in a three-point type;
the opening/closing of the water inlet electromagnetic valve is controlled by the water level sensor 2, the low-level electromagnetic valve opens water inlet, and the high-level electromagnetic valve closes;
one side of the valve 2 is connected with a water outlet at the bottom of the spray liquid supply system, the other side of the valve is connected with a spray pump, and the valve is normally opened in working state;
the spray pump is a vertical water pump and is connected with the humidifying nozzle and the atomizing nozzle through a spray pipe;
the manhole 2 is arranged at the top of the device.
Further, adjusting the working time of the spray pump according to the numerical value read by the pH sensor in the mixed filler, and keeping the pH value of the mixed filler at 6.5-8.0;
and adjusting the working time of the spray pump according to the values read by the temperature and humidity sensors in the mixed filler, so that the temperature of the mixed filler is kept within the range of 15-40 ℃.
Further, the mixed filler is formed by filling a polyurethane sponge block and a loofah sponge filler in a ratio of 2: 3; the density of the polyurethane sponge block is 20kg/m3A particle diameter of 10 to 20mm and a packing density of 10kg/m3The filling height is 2000 mm; the mixed filler is inoculated with microorganisms of the genera Pseudomonas and Moraxella.
Furthermore, the adsorption reaction zone comprises an air inlet 2, a machine leg, an active carbon drawer, a filtering and air distributing module, an air outlet, a water outlet pipe, a water seal and an air guide plate;
the air inlet 2 is positioned on the right side of the device;
the active carbon drawer is fixed by bolts and is provided with a drawing handle so as to be convenient for replacing the active carbon;
the filtering and air distributing module is provided with filter cotton and an air distributing plate 3;
the air outlet is arranged on the left side of the device;
the water discharged by the water outlet pipe and the water seal is condensed water;
the air guide plate is arranged in the device and is matched with the filtering and air distribution module and the activated carbon drawer for use, so that the trend of air is guided.
Further, the device also comprises a control center, wherein the control center is used for carrying out photocatalyst reaction zone V power supply control, pretreatment zone water level control, biological-photocatalyst combined reaction zone spraying control, biological-photocatalyst combined reaction zone pH monitoring and adjusting, and biological-photocatalyst combined reaction zone temperature and humidity monitoring and adjusting.
According to another aspect of the present invention, there is provided a method for treating persistent malodorous gas, comprising:
s1, the collected difficultly-degradable malodorous gas passes through a pretreatment area, particle pollutants in the gas are intercepted by an activated carbon non-woven fabric arranged inside the pretreatment area, and the difficultly-degradable malodorous gas is humidified, subjected to temperature regulation, subjected to particulate matter removal pretreatment and partially degraded by malodorous gas pollutants through a water level sensor and a microbial agent;
s2, the hardly degradable malodorous gas pretreated by S1 enters a biological-photocatalyst combined reaction zone, and sequentially passes through a mixed filler zone I, a humidifying spraying zone II, an atomizing spraying zone III, a demisting zone IV and a photocatalyst reaction zone V of the biological-photocatalyst combined reaction zone, and the biological-photocatalyst combined reaction zone carries out filler absorption and adsorption, biodegradation and photochemical oxidation system purification on the malodorous gas:
s21, spraying the microbial agent to the surface of the mixed filler by a humidifying nozzle, uniformly distributing gas by a gas distribution plate 1, then feeding the gas into the mixed filler, and contacting the gas with the microorganisms attached to the surface of the mixed filler to degrade pollutants; wherein, the microbial inoculum flows into the water storage tank through the mixed filler and is discharged back to the spray liquid supply system by the drainage pump for recycling;
s22, enabling the difficultly degraded malodorous gas to flow upwards to pass through a humidifying spraying area, quickly contacting with a microbial agent sprayed into the air, purifying again, and intensively entering an atomizing spraying area under the assistance of a guide plate;
s23, diffusing the difficultly degraded malodorous gas intensively entering the atomization spraying area to the periphery, contacting with the microbial agent highly atomized in the atomization spraying area, making the difficultly degraded malodorous gas swirl inside the atomization spraying area with the assistance of the airflow crutch plate, and allowing the malodorous gas to leave the atomization spraying area and enter the demisting area;
s24, uniformly distributing gas by the gas distribution plate 2, diffusing the gas into the demisting filler, and removing water vapor and part of pollutants carried in the foul gas under the adsorption action of the demisting filler;
s25, allowing the malodorous gas after water vapor removal to enter a photocatalyst reaction zone V, allowing an ultraviolet light tube to cooperate with a photocatalytic filter screen to perform ultraviolet light-oxygen catalytic degradation on the malodorous gas, and allowing the malodorous gas to leave the biological-photocatalyst combined reaction zone;
s3, the malodorous gas treated by the S2 enters an adsorption reaction area, the malodorous gas enters an active carbon drawer through a filtering and gas distribution module, the nondegradable malodorous gas adsorbed by the granular active carbon reaches the standard, and the gas reaching the standard is pumped out by an induced draft fan and is discharged through an exhaust funnel.
According to the technical scheme provided by the embodiment of the invention, the treatment device for the difficultly-degradable malodorous gas integrates an advanced biological-photochemical-physicochemical combined technology, and can efficiently, stably and quickly treat the difficultly-degradable malodorous gas in industrial waste gas. The whole device has simple structure, good treatment effect, no secondary pollutant generation, low investment and operation cost and can realize the standard emission of the industrial degradation-resistant malodorous gas.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural diagram of a treatment device for malodorous gases that are difficult to degrade according to an embodiment of the present invention;
fig. 2 is a schematic plan view of an ultraviolet lamp tube according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pretreatment zone and a bio-photocatalyst combined reaction zone according to an embodiment of the present invention;
fig. 4 is a structural view of a spray liquid supply system according to an embodiment of the present invention;
fig. 5 is a structural diagram of an adsorption reaction zone according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding of the embodiments of the present invention, the following description will be further explained by taking specific embodiments as examples with reference to the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The embodiment of the invention provides a treatment device for difficultly degraded malodorous gas, which comprises a pretreatment area, a biological-photocatalyst combined reaction area, an adsorption reaction area and a control center. The method comprises the following steps that difficultly-degradable malodorous gas generated in the industrial production process is collected through a pipeline and then enters a pretreatment area to be subjected to pretreatment of partial particulate matters and pollutants and temperature and humidity regulation treatment, and then enters a biological-photocatalyst combined reaction area, the malodorous gas is contacted with a microbial agent for multiple times to be primarily purified and remove water vapor carried in the gas and then enters a photocatalyst reaction area V, the malodorous gas subjected to photocatalytic degradation by light and oxygen enters an adsorption reaction area filled with granular active carbon, and the gas reaching the standard after adsorption treatment enters an induced draft fan from a gas outlet and is discharged through an exhaust funnel.
Fig. 1 is a structural diagram of a treatment device for persistent malodorous gases, which includes a pretreatment area, a biological-photocatalyst combined reaction area, and an adsorption reaction area.
Fig. 2 is a structural diagram of a pretreatment region and a biological-photocatalyst combined reaction region according to an embodiment of the present invention, and fig. 3 is a schematic plan view of an ultraviolet light tube. The pretreatment area comprises activated carbon non-woven fabrics B2, air inlet 1B3, drain pipe B4, level sensor 1B5, aqua storage tank B23, and the pretreatment area carries out the regulation of temperature and humidity to difficult degradation foul gas, gets rid of some particulate matters, the pollutant in the foul gas simultaneously. The biological-photocatalyst combined reaction zone comprises a mixed filler zone I, a humidifying spraying zone II, an atomizing spraying zone III, a demisting zone IV, a photocatalyst reaction zone V, a spray liquid supply system and an inspection manhole 1B 11; the mixed filler area I comprises a gas distribution plate bracket 1B6, a gas distribution plate 1B7, a temperature and humidity sensor B8, a pH sensor B9 and mixed filler B10; the humidifying spraying area II comprises a spraying pipe B12, a humidifying spray head B13 and a guide plate B16; the atomization spraying area III comprises a spraying pipe B12, an atomization nozzle B14 and an airflow crutch board B17; the demisting zone IV comprises demisting fillers B15, a gas distribution plate bracket 2B18 and a gas distribution plate 2B 19; the photocatalyst reaction zone V comprises an ultraviolet light tube B20, a photocatalytic filter screen B21 and a lamp tube base B22.
Fig. 4 is a structural diagram of a spray liquid supply system according to an embodiment of the present invention. The device comprises an inspection manhole 2C1, a device shell C2, a water inlet 2C3, a water return pipe C4, a valve 1C5, a drainage pump C6, a one-way valve C7, a valve 2C8, a spray pump C9, a filter C10, a water outlet C11, a water level sensor 2C12, a water inlet electromagnetic valve C13 and a water inlet 1C 14.
Fig. 5 is a structural diagram of an adsorption reaction zone according to an embodiment of the present invention. The adsorption reaction zone comprises a device shell D1, an air outlet D2, a machine foot D3, an activated carbon drawer D4, a sealing bolt D5, a handle D6, a filtering and air distribution module D7, an air inlet 2D8, a water outlet pipe and water seal D9, an air guide plate D10, a screen D11, filter cotton D12, a filter air distribution module support D13 and an air distribution plate 3D 14.
A pretreatment area:
the pretreatment area is used for receiving and pretreating the difficultly degraded malodorous gas, humidifying and adjusting the temperature of the difficultly degraded malodorous gas through the water level sensor 1 and the microbial agent, and removing partial particulate matters and pollutants in the malodorous gas to create good air inlet conditions for subsequent treatment. The air inlet 1 is arranged at the bottom of the side surface of the device, the water level sensor 1 is arranged in the pretreatment area, and the low point of the air inlet 1 is higher than the inlet of the water level sensor 1 or is kept level. The activated carbon non-woven fabrics install in air inlet 1 front end, can intercept the granule pollutant in the difficult degradation foul gas, play the effect of dust removal in advance, need regularly wash or change. The pretreatment area adjusts the temperature and the humidity of the refractory malodorous gas by utilizing the microbial agent flowing from the biological reaction area to the water storage tank.
The water level sensor 1 is positioned at the bottom of the side face of the pretreatment area and above the drain pipe, the water level sensor 1 is in a three-point type, the water level sensor works at a high water level, and the water level sensor stops at a low water level. The water level sensor 1 is arranged in the pretreatment area, when the water level reaches the upper limit of the water level sensor 1, the water level sensor 1 transmits an upper limit signal of the water level to a control center water level controller, the water level controller is connected with a power supply of a drainage pump, and the drainage pump works; when the water level reaches the lower limit of the water level sensor 1, the water level sensor 1 transmits a water level lower limit signal to a control center water level controller, the water level controller cuts off the power supply of the drainage pump, and the drainage pump is stopped.
The drain pipe is positioned at the bottom of the side surface of the device, the bottom of the flange is flush with the bottom of the device, and the microbial inoculum collected by the water storage tank is drained back to the spraying liquid supply system for recycling.
Biological-photocatalyst combined reaction zone:
the pH monitoring and adjusting in the biological-photocatalyst combined reaction zone refers to adjusting the working time of the spray pump through a pH controller according to a numerical value read by a pH sensor in the mixed filler, so that the pH of the mixed filler is always kept at 6.5-8.0.
The temperature and humidity monitoring and adjusting of the biological-photocatalyst combined reaction zone are numerical values read by temperature and humidity sensors placed in the mixed filler, and the working time of the spray pump is adjusted by controlling a temperature and humidity controller in the center, so that the temperature of the mixed filler is kept within the range of 15-40 ℃.
The pretreatment area and the biological-photocatalyst combined reaction area are made of 304 stainless steel.
The gas distribution plate 1 in the biological-photocatalyst combined reaction zone is a 304 stainless steel punched plate, the aperture is 5mm, and the hole spacing is 15 mm; the gas distribution plate support 1 is made of 304 stainless steel materials through welding, the distance between cross beams is 500-800 mm, and the load capacity is not less than 500kg per square meter. The mixed filler is formed by filling a polyurethane sponge block and a loofah sponge filler in proportion; the filling volume ratio of the two is 2: 3; the density of the polyurethane sponge block is 20kg/m3A particle diameter of 10 to 20mm and a packing density of 10kg/m3The filling height is 2000 mm; the mixed filler is inoculated with fungus microorganisms capable of efficiently degrading organic matters, and the fungus microorganisms are Pseudomonas (Pseudomonas) and Moraxella (Moraxella Fulton) microorganisms. The humidifying spray head is located 500mm above the mixed filler, is made of 304 stainless steel, is fixed on the lower surface of the guide plate, has a spray angle of 100-120 degrees, and has a spray area uniformly covering the upper surface of the mixed filler. The aperture of the humidifying nozzle is 0.5-0.6 mm, and the operating pressure is 15-25 kg/cm2The liquid flow rate is 130-243 ml/min. The aperture of the atomizing nozzle is 0.15-0.2 mm, and the operating pressure is 15-25 kg/cm2And the liquid flow is 20-46 ml/min, so that the microbial inoculum can be fully atomized into small fog drops in an atomization spraying area and can not be liquefied into liquid. The airflow crutch plate is made of 304 stainless steel, is hung at the top of the biological-photocatalyst combined reaction zone device through a steel wire, and is light and detachable; on the upper surface of which is arranged a showerThe lower surface of the pipe is fixed with an atomizing nozzle; the bottom of the airflow crutch plate is in an inner buckle shape, so that the air can make vortex flow in the airflow crutch plate; the steel wire penetrates through the demisting zone and the photocatalyst reaction zone V and is connected with the airflow crutch plate and the top of the biological-photocatalyst combined reaction zone device. The shower material be PPR hot melt pipe.
The demisting area is filled with filamentous coconut fiber filler, and the diameter of the filler is 0.5-1.5 mm; the air-drying type deodorization device has the advantages of hygroscopicity, capability of adsorbing a small amount of pollutants in the malodorous gas difficult to degrade, light weight, high cost performance and capability of being used as fuel for recycling after being dried. The gas distribution plate 2 is a 304 stainless steel punching plate, the aperture is 10mm, the hole interval is 30mm, the thickness is 2mm, and the gas distribution plate is welded and fixed on the gas distribution plate support 2.
The photocatalyst reaction zone V comprises an ultraviolet light lamp tube, a lamp tube base and a photocatalytic filter screen. The ultraviolet light tube has wave bands of 185nm and 254nm, power of 150W and tail lines. The lamp tube base is made of 304 stainless steel materials, is fixed on the outer side of the shell of the photocatalyst reaction zone V, and is additionally provided with a sealing gasket between the lamp tube base and the shell for supporting the ultraviolet lamp tube. The vertical distance between the ultraviolet lamp tube and the adjacent photocatalytic filter screen is 40-100 cm, and the number of the ultraviolet lamp tubes and the number of the photocatalytic filter screens can be properly increased or decreased according to actual conditions. The photocatalytic filter screen can intercept partial residual pollutants and water vapor while cooperating with the ultraviolet lamp tube to remove the pollutants, so that the working environment of the ultraviolet lamp tube is kept clean to a certain extent, and the cleaning period in the device is shortened. The photocatalytic filter screen is made of foamed nickel and sprayed with titanium dioxide powder, and the thickness of the photocatalytic filter screen is 3-8 mm.
The spraying liquid supply system comprises an inspection manhole 2, a device shell, a water inlet 1, a water return pipe, a valve 1, a draining pump, a one-way valve, a valve 2, a spraying pump, a filter, a water level sensor 2, a water inlet electromagnetic valve and a water inlet 2, and provides a microbial agent for spraying as spraying liquid for a biological-photocatalyst combined reaction area. In order to ensure that the microorganisms maintain stable pH, temperature and humidity, a proper amount of water is kept in the spray liquid supply system, and a water level sensor 2 is arranged in the spray liquid supply system. When the water level reaches the lower limit of the water level sensor 2, the water level sensor 2 transmits a water level lower limit signal to a control center water level controller, and the water level controller is communicated with a water inlet electromagnetic valve to open water inlet; when the water level reaches the upper limit of the water level sensor 2, the water level sensor 2 transmits an upper limit signal of the water level to a water level controller of a control center, and the water level controller disconnects a water inlet electromagnetic valve to stop water inlet.
The valve 1 is connected with a drain pipe of the pretreatment area and is normally opened in working state. The drainage pump is a vertical water pump, and the working voltage is 220V. The one-way valve is connected to the outlet of the water discharge pump to prevent the liquid from flowing back to the spraying liquid supply system. The water level sensor 2 is positioned in the spraying liquid supply system, the water level sensor 2 is in a three-point type, the low water level works, and the high water level stops. The opening/closing of the water inlet electromagnetic valve is controlled by the water level sensor 2, the low-level electromagnetic valve is opened to feed water, and the high-level electromagnetic valve is closed. One side of the valve 2 is connected with a water outlet at the bottom of the spray liquid supply system, the other side is connected with a spray pump, and the valve is normally opened in working state. The spray pump is a vertical water pump and is connected with the humidifying spray head through a pipeline, and the working voltage is 220V. The filter be "Y" type filter, the filter screen can be dismantled and wash.
The working time of the spray pump is determined by the pH value, the temperature and the humidity of the mixed filler, and the output of the pH controller is preferentially executed when the spray pump works.
The pH sensor is positioned in the middle of the mixed filler and is used for detecting the pH value of the mixed filler. The temperature and humidity sensor is positioned in the middle of the mixed filler and used for detecting the temperature and humidity of the mixed filler. The inspection manhole 1 is arranged on the side face of the device, so that the filler adding and replacing and the daily cleaning and maintenance of the spraying device are facilitated.
An adsorption reaction zone:
the device of the adsorption reaction zone is made of 304 stainless steel materials and comprises an air inlet 2, a machine leg, an active carbon drawer, a filtering and air distributing module, an air outlet, a water outlet pipe, a water seal and an air guide plate.
The air inlet 2D8 is located on the right side of the device.
The active carbon drawer is fixed by a bolt, and the pull handle is arranged to facilitate the replacement of the active carbon.
The back of the panel of the active carbon drawer is provided with a sealing pad, the bottom of the panel is provided with a stainless steel screen mesh, and honeycomb active carbon or granular active carbon with the particle size of 5-10 mm can be put in the panel.
The filtering and air distributing module is provided with a filter cotton and an air distributing plate 3.
The filter cotton is fine-pore biochemical filter cotton, is used for removing dust and large-particle substances, and needs to be cleaned or replaced regularly.
The gas distribution plate 3 is a 304 punching plate, the aperture is 5mm, and the hole distance is 15 mm.
The air outlet is arranged on the left side of the device.
The water outlet pipe and the water seal drain condensed water, and the water outlet pipe can be connected to a spray liquid supply system when the water amount is large.
The gas guide plate is arranged in the device, is matched with the filtering and gas distribution module and the activated carbon drawer for use, guides the gas trend and prevents gas short circuit.
The control center:
the control center comprises a photocatalyst reaction zone V power supply control, a pretreatment zone water level control, a biological-photocatalyst combined reaction zone spraying control, a biological-photocatalyst combined reaction zone pH monitoring and adjusting function, a biological-photocatalyst combined reaction zone temperature and humidity monitoring and adjusting function and a reserved fan control port.
Based on the device shown in fig. 1, the processing flow of the method for processing the persistent malodorous gas provided by the embodiment of the present invention includes:
s1, the collected difficultly-degradable malodorous gas passes through a pretreatment area, particle pollutants in the gas are intercepted by an activated carbon non-woven fabric arranged inside the pretreatment area, and the difficultly-degradable malodorous gas is humidified, subjected to temperature regulation, subjected to particulate matter removal pretreatment and partially degraded by malodorous gas pollutants through a water level sensor and a microbial agent;
s2, the hardly degradable malodorous gas pretreated by S1 enters a biological-photocatalyst combined reaction zone, and sequentially passes through a mixed filler zone I, a humidifying spraying zone II, an atomizing spraying zone III, a demisting zone IV and a photocatalyst reaction zone V of the biological-photocatalyst combined reaction zone, and the biological-photocatalyst combined reaction zone carries out filler absorption and adsorption, biodegradation and photochemical oxidation system purification on the malodorous gas:
s21, spraying the microbial agent to the surface of the mixed filler by a humidifying nozzle, uniformly distributing gas by a gas distribution plate 1, then feeding the gas into the mixed filler, and contacting the gas with the microorganisms attached to the surface of the mixed filler to degrade pollutants; wherein, the microbial inoculum flows into the water storage tank through the mixed filler and is discharged back to the spray liquid supply system by the drainage pump for recycling;
s22, enabling the difficultly degraded malodorous gas to flow upwards to pass through a humidifying spraying area, quickly contacting with a microbial agent sprayed into the air, purifying again, and intensively entering an atomizing spraying area under the assistance of a guide plate;
s23, diffusing the difficultly degraded malodorous gas intensively entering the atomization spraying area to the periphery, contacting with the microbial agent highly atomized by the atomization spraying area, making the difficultly degraded malodorous gas swirl inside the atomization spraying area with the assistance of the airflow crutch plate, and then leaving the atomization spraying area to enter the demisting area;
s24, uniformly distributing gas by the gas distribution plate 2, diffusing the gas into the demisting filler, and removing water vapor and part of pollutants carried in the foul gas under the adsorption action of the demisting filler;
s25, allowing the malodorous gas after water vapor removal to enter a photocatalyst reaction zone V, allowing an ultraviolet light tube to cooperate with a photocatalytic filter screen to perform ultraviolet light-oxygen catalytic degradation on the malodorous gas, and allowing the malodorous gas to leave the biological-photocatalyst combined reaction zone;
s3, the malodorous gas treated by the S2 enters an adsorption reaction area, the malodorous gas enters an active carbon drawer through a filtering and gas distribution module, the nondegradable malodorous gas adsorbed by the granular active carbon reaches the standard, and the gas reaching the standard is pumped out by an induced draft fan and is discharged through an exhaust funnel.
In conclusion, the treatment method and the device for the difficultly-degradable malodorous gas, which are provided by the invention, integrate the advanced biological-photochemical-physicochemical combined technology, and can efficiently, stably and quickly treat the industrial difficultly-degradable malodorous gas. The whole device has simple structure, good treatment effect, no secondary pollutant generation, low investment and operation cost and can realize the standard emission of the industrial malodorous gas difficult to reduce.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in this specification are described in a progressive manner, and in particular, for the apparatus or system embodiments, because they are substantially similar to the method embodiments, they are described in a simpler manner, and reference may be made to the partial description of the method embodiments for relevant points. Some or all of the modules are selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A method for treating persistent malodorous gas, comprising:
s1, the collected difficultly-degradable malodorous gas passes through a pretreatment area, particle pollutants in the gas are intercepted by an activated carbon non-woven fabric arranged inside the pretreatment area, and the difficultly-degradable malodorous gas is humidified, subjected to temperature regulation, subjected to particulate matter removal pretreatment and partially degraded by malodorous gas pollutants through a water level sensor and a microbial agent;
s2, the hardly degradable malodorous gas pretreated by S1 enters a biological-photocatalyst combined reaction zone, and sequentially passes through a mixed filler zone I, a humidifying spraying zone II, an atomizing spraying zone III, a demisting zone IV and a photocatalyst reaction zone V of the biological-photocatalyst combined reaction zone, and the biological-photocatalyst combined reaction zone carries out filler absorption and adsorption, biodegradation and photochemical oxidation system purification on the malodorous gas:
s21, spraying the microbial agent to the surface of the mixed filler by a humidifying nozzle, uniformly distributing gas by a gas distribution plate 1, then feeding the gas into the mixed filler, and contacting the gas with the microorganisms attached to the surface of the mixed filler to degrade pollutants; wherein, the microbial inoculum flows into the water storage tank through the mixed filler and is discharged back to the spray liquid supply system by the drainage pump for recycling;
s22, enabling the difficultly degraded malodorous gas to flow upwards to pass through a humidifying spraying area, quickly contacting with a microbial agent sprayed into the air, purifying again, and intensively entering an atomizing spraying area under the assistance of a guide plate;
s23, diffusing the difficultly degraded malodorous gas intensively entering the atomization spraying area to the periphery, contacting with the microbial agent highly atomized by the atomization spraying area, making the difficultly degraded malodorous gas swirl inside the atomization spraying area with the assistance of the airflow crutch plate, and then leaving the atomization spraying area to enter the demisting area;
s24, uniformly distributing gas by the gas distribution plate 2, diffusing the gas into the demisting filler, and removing water vapor and part of pollutants carried in the foul gas under the adsorption action of the demisting filler;
s25, allowing the malodorous gas after water vapor removal to enter a photocatalyst reaction zone V, allowing an ultraviolet light tube to cooperate with a photocatalytic filter screen to perform ultraviolet light-oxygen catalytic degradation on the malodorous gas, and allowing the malodorous gas to leave the biological-photocatalyst combined reaction zone;
s3, the malodorous gas treated by the S2 enters an adsorption reaction area, the malodorous gas enters an active carbon drawer through a filtering and gas distribution module, the nondegradable malodorous gas adsorbed by the granular active carbon reaches the standard, and the gas reaching the standard is pumped out by an induced draft fan and is discharged through an exhaust funnel.
2. An apparatus for applying the method for treating persistent malodorous gases as claimed in claim 1, comprising: a pretreatment zone, a biological-photocatalyst combined reaction zone and an adsorption reaction zone;
the pretreatment area is used for receiving and pretreating the difficultly-degradable malodorous gas, intercepting part of particulate matters in the malodorous gas by an activated carbon non-woven fabric arranged inside the pretreatment area, humidifying the difficultly-degradable malodorous gas by a water level sensor 1 and a microbial agent, adjusting the temperature, removing the pretreatment of the particulate matters and degrading part of malodorous gas pollutants, and enabling the gas treated by the pretreatment area to enter a biological-photocatalyst combined reaction area;
the biological-photocatalyst combined reaction zone comprises a mixed filler zone I, a humidifying spraying zone II, an atomizing spraying zone III, a defogging zone IV, a photocatalyst reaction zone V and a spraying liquid supply system, the purification of the malodorous gas which is difficult to degrade is carried out by utilizing the synergistic effect of absorption, adsorption, biodegradation and photo-oxygen catalysis, and the malodorous gas purified by the biological-photocatalyst combined reaction zone enters the adsorption reaction zone;
the adsorption reaction zone adsorbs malodorous gas through granular activated carbon, the gas enters the activated carbon drawer through the filtering and gas distribution module, and the gas is pumped out through the draught fan after being adsorbed by the granular activated carbon and is discharged through the exhaust funnel.
3. The apparatus of claim 2, wherein the pretreatment region comprises an activated carbon non-woven fabric, an air inlet 1, a water storage tank, a drain pipe, a water level sensor 1;
the water level sensor 1 is arranged in the pretreatment area, the air inlet 1 is arranged at the bottom of the side surface of the device, the low point of the air inlet 1 is higher than or equal to the inlet of the water level sensor 1, and the front end of the air inlet 1 is provided with an activated carbon non-woven fabric;
when the water level reaches the upper limit of the water level sensor 1, the water level sensor 1 transmits an upper limit water level signal to a control center water level controller, the water level controller is connected with a power supply of a drainage pump, and the drainage pump works; when the water level reaches the lower limit of the water level sensor 1, the water level sensor 1 transmits a water level lower limit signal into a control center water level controller, the water level controller cuts off the power supply of a drainage pump, and the drainage pump is stopped;
the drain pipe is positioned at the bottom of the side surface of the device, the bottom of the flange is flush with the bottom of the device, and the microbial inoculum collected by the water storage tank is drained back to the spraying liquid supply system for recycling.
4. The device of claim 3, wherein the bio-photocatalyst combined reaction zone comprises a mixed packing zone I, a humidifying spray zone II, an atomizing spray zone III, a demisting zone IV, a photocatalyst reaction zone V, a spray liquid supply system and a manhole 1; the mixed filler area I comprises an air distribution plate bracket 1, an air distribution plate 1, a temperature sensor, a humidity sensor, a pH sensor and mixed fillers; the humidifying spraying area II comprises a spraying pipe, a humidifying spray head and a guide plate; the atomization spraying area III comprises a spraying pipe, an atomization nozzle and an airflow crutch plate; the demisting area IV comprises demisting fillers, an air distribution plate bracket 2 and an air distribution plate 2; the photocatalyst reaction zone V comprises an ultraviolet light tube, a photocatalytic filter screen and a lamp tube base;
the humidifying spray head is positioned above the mixed filler and fixed on the lower surface of the guide plate, the spraying angle is 100-120 degrees, and the spraying area uniformly covers the upper surface of the mixed filler;
the airflow crutch plate is detachable and is hung at the top of the biological-photocatalyst combined reaction zone device through a steel wire; the upper surface of the airflow crutch plate is provided with a spray pipe, and the lower surface of the airflow crutch plate is fixed with an atomizing nozzle; the bottom of the airflow crutch plate is in an inner buckle shape;
the demisting area is filled with filamentous coconut fiber filler, and the diameter of the filler is 0.5-1.5 mm;
the lamp tube base is fixed on the outer side of the shell of the biological-photocatalyst combined reaction zone, and a sealing gasket is additionally arranged between the lamp tube base and the shell and used for supporting the ultraviolet lamp tube;
the photocatalytic filter screen is made of foamed nickel and sprayed with titanium dioxide powder, and the thickness of the photocatalytic filter screen is 3-8 mm;
the pH sensor is positioned in the middle of the mixed filler and is used for detecting the pH value of the mixed filler;
the temperature and humidity sensors are positioned in the middle of the mixed filler and are respectively used for detecting the temperature and humidity of the mixed filler.
5. The apparatus of claim 4, wherein the spray liquid supply system comprises a service manhole 2, an apparatus housing, a water inlet 1, a water return pipe, a valve 1, a drain pump, a check valve, a valve 2, a spray pump, a filter, a water level sensor 2, a water inlet solenoid valve, a water inlet 2;
the valve 1 is connected with a drainage pipe of the pretreatment area and is normally opened in a working state;
the drainage pump is a vertical water pump;
the one-way valve is connected with the outlet of the drainage pump;
the spraying liquid supply system is provided with an inspection manhole 2, a water inlet 1, a water inlet 2, a water outlet and a water level sensor;
the water level sensor 2 is positioned in the spray liquid supply system, and the water level sensor 2 is in a three-point type;
the opening/closing of the water inlet electromagnetic valve is controlled by the water level sensor 2, the low-level electromagnetic valve opens water inlet, and the high-level electromagnetic valve closes;
one side of the valve 2 is connected with a water outlet at the bottom of the spray liquid supply system, the other side of the valve is connected with a spray pump, and the valve is normally opened in working state;
the spray pump is a vertical water pump and is connected with the humidifying nozzle and the atomizing nozzle through a spray pipe;
the manhole 2 is arranged at the top of the device.
6. The device as claimed in claim 4, wherein the working time of the spray pump is adjusted according to the value read by the pH sensor in the mixed filler, so that the pH of the mixed filler is kept between 6.5 and 8.0;
and adjusting the working time of the spray pump according to the values read by the temperature and humidity sensors in the mixed filler, so that the temperature of the mixed filler is kept within the range of 15-40 ℃.
7. The device according to claim 4, wherein the mixed filler is prepared by filling a polyurethane sponge block and a loofah sponge filler in a ratio of 2: 3; the density of the polyurethane sponge block is 20kg/m3A particle diameter of 10 to 20mm and a packing density of 10kg/m3The filling height is 2000 mm; the mixed filler is inoculated with microorganisms of the genera Pseudomonas and Moraxella.
8. The device according to any one of claims 2 to 7, wherein the adsorption reaction zone comprises an air inlet 2, a machine leg, an activated carbon drawer, a filtering and air distributing module, an air outlet, an water outlet pipe, a water seal and an air guide plate;
the air inlet 2 is positioned on the right side of the device;
the active carbon drawer is fixed by bolts and is provided with a drawing handle so as to be convenient for replacing the active carbon;
the filtering and air distributing module is provided with filter cotton and an air distributing plate 3;
the air outlet is arranged on the left side of the device;
the water discharged by the water outlet pipe and the water seal is condensed water;
the air guide plate is arranged in the device and is matched with the filtering and air distribution module and the activated carbon drawer for use, so that the trend of air is guided.
9. The device of claim 8, further comprising a control center, wherein the control center performs power control of the photo-catalytic reaction zone, water level control of the pretreatment zone, spray control of the bio-photo-catalytic combined reaction zone, pH monitoring and adjustment of the bio-photo-catalytic combined reaction zone, and temperature and humidity monitoring and adjustment of the bio-photo-catalytic combined reaction zone.
CN201810180030.3A 2018-03-05 2018-03-05 Treatment method and device for hardly-degradable malodorous gas Active CN108176210B (en)

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CN109173700A (en) * 2018-10-09 2019-01-11 盐城市锦瑞石油机械有限公司 A kind of device for high concentration petroleum emission of degrading
CN109289479A (en) * 2018-10-25 2019-02-01 南京博酝化工科技有限公司 A kind of environmental-protecting chemical emission-control equipment
CN109331642A (en) * 2018-12-07 2019-02-15 佛山科学技术学院 A kind of VOC emission-control equipment and VOC exhaust treatment system
CN110814486A (en) * 2019-11-27 2020-02-21 湖南金凯循环科技有限公司 Welding mechanism for recycling waste lithium batteries
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