Integrated pulsed plasma biological coupling deodorization device and purification system

Abstract

The invention relates to the technical field of air purification, in particular to an integrated pulsed plasma bio-coupling deodorization device and a purification system.The device comprises an integrated box body which comprises a box body, an air inlet and an air outlet, and the air inlet and the air outlet are formed in the box body; the pulsed plasma reaction area is arranged on one side, close to the air inlet, in the integrated box body; the pulse plasma reaction zone comprises a pulse plasma reaction assembly, an air inlet duct and a narrow pulse power supply assembly; the biological reaction area is arranged on one side, close to the exhaust port, in the integrated box body. According to the integrated pulsed plasma biological coupling deodorization device provided by the invention, the pulsed plasma reaction area, the washing reaction area and the biological reaction area are integrated in the integrated box body, so that the occupied space is small, complex organic molecules are decomposed into smaller molecules which are easier to biodegrade through pulsed plasma deodorization, and the deodorization effect is good. Further, deep deodorization is performed under the deodorization action of the washing filler and the biological filler, so that the biological filtration efficiency is improved, and the deodorization effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and in particular to an integrated pulse plasma bio-coupling deodorization device and purification system. Background Art

[0002] In order to solve the environmental problems caused by odor emissions from sewage stations, biological deodorization devices are currently often used to adsorb odorous substances in waste gas and then decompose them before discharging them. However, biological filtration is selective in the treatment effect of different odorous pollutants, and the pollutants need to meet certain characteristics, such as good hydrophilicity, ability to be degraded by microorganisms, low biological toxicity, and low particle concentration. In addition, microorganisms are very sensitive to environmental conditions such as temperature, humidity and pH value, and it is very difficult to maintain organisms in the high-efficiency zone all year round. The growth and circulation of biofilms require a certain period. Faced with load changes, their self-regulation ability is poor and they cannot adjust the load in a short time. In addition, a single biological deodorization device requires a long residence time to achieve high deodorization efficiency, which corresponds to a large floor area. In urban residential areas with tight land use, it is difficult to further improve efficiency. Therefore, it is necessary to seek a new deodorization process combination to cope with similar sewage stations with large pollutant changes, high odor, tight land use, and ultra-low emission requirements. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide an integrated pulse plasma bio-coupling deodorization device and purification system.

[0004] In a first aspect, an embodiment of the present application provides an integrated pulse plasma bio-coupling deodorization device, the device comprising: The integrated box body comprises a box body, an air inlet and an air outlet arranged on the box body; The pulse plasma reaction zone is arranged on one side of the integrated box body close to the air inlet; the pulse plasma reaction zone includes a pulse plasma reaction component, an air inlet duct and a narrow pulse power supply component; The biological reaction zone is arranged on one side of the integrated box body close to the exhaust port; the biological reaction zone includes a biological filler zone and a biological liquid holding zone separated by a filler support plate, and the biological filler zone is filled with biological fillers; the top of the biological reaction zone is connected to the exhaust port; The water-washing reaction zone is arranged between the pulse plasma reaction zone and the biological reaction zone; the water-washing reaction zone includes a water-washing filler zone and a water-washing liquid holding zone separated by a filler support plate; the water-washing filler zone is filled with water-washing fillers; Among them, the pulse plasma reaction component and the narrow pulse power supply component are respectively connected to an external control unit.

[0005] In combination with the first aspect, the inlet end of the air inlet duct passes through the air inlet and extends to the outside of the integrated box; the outlet end of the air inlet duct extends to the water washing reaction zone.

[0006] In combination with the first aspect, the air inlet duct further includes: The filter group is close to the inlet end of the air inlet duct; A first air flow distribution plate is arranged on one side of the filter group and away from the inlet end; The second air flow uniform distribution plate is close to the outlet end of the air inlet duct.

[0007] In combination with the first aspect, the air inlet duct also includes a pressure sensor, a temperature sensor and a flow sensor, which are arranged between the filter group and the first air flow distribution plate; the pressure sensor, the temperature sensor and the flow sensor are electrically connected to the control unit respectively.

[0008] In combination with the first aspect, the pulse plasma reaction component is arranged in the air inlet duct, and the narrow pulse power supply component is arranged outside the air inlet duct; the narrow pulse power supply component is connected to the pulse plasma reaction component.

[0009] In combination with the first aspect, the device further includes: The circulation pipeline is arranged in the integrated box; A spray pipe is provided in the water-washing reaction zone and the biological reaction zone; the inlet end of the spray pipe is connected to the circulation pipeline; a nozzle, connected to an outlet end of the spray pipe; The circulating water pump is arranged in the circulating pipeline, and the circulating water pump is connected with the control unit.

[0010] In combination with the first aspect, the device further includes: PH sensor, located in the water washing liquid holding area and the biological liquid holding area; Humidity sensor, located in the biofiller area; A flow sensor is provided in the biological filler area; The PH sensor, humidity sensor and flow sensor are respectively connected with the control unit.

[0011] In combination with the first aspect, the bottom plate of the air inlet duct is inclined; a drain outlet is provided at the bottom of the integrated box, and the lowest point of the air inlet duct is connected to the drain outlet.

[0012] In combination with the first aspect, the box body includes: Steel skeleton; There are multiple inner supports, which are arranged in intervals inside the steel frame; The insulation layer is provided between two adjacent inner support members in the steel frame; The outer guard plate is installed on the outside of the steel frame.

[0013] In a second aspect, the present application provides a purification system, comprising the above device.

[0014] The embodiments of the present application bring the following beneficial effects: The present application provides an integrated pulse plasma bio-coupling deodorization device and purification system, the device comprising: an integrated box body, comprising a box body body, an air inlet and an exhaust port arranged on the box body body; a pulse plasma reaction zone, arranged on the side of the integrated box body close to the air inlet; the pulse plasma reaction zone comprises a pulse plasma reaction component, an air inlet duct and a narrow pulse power supply component; a biological reaction zone, arranged on the side of the integrated box body close to the exhaust port; the biological reaction zone comprises a biological filler zone and a biological liquid holding zone separated by a filler support plate, and the biological filler zone is filled with biological fillers; the top of the biological reaction zone is connected to the air outlet; a water washing reaction zone, arranged between the pulse plasma reaction zone and the biological reaction zone; the biological reaction zone comprises a water washing filler zone and a water washing liquid holding zone separated by a filler support plate; the water washing filler zone is filled with water washing fillers; wherein, the pulse plasma reaction component and the narrow pulse power supply component are respectively connected to an external control unit.

[0015] The integrated pulse plasma bio-coupled deodorization device provided in the present application occupies a small space by integrating the pulse plasma reaction zone, water washing reaction zone and biological reaction zone in an integrated box. The pulse plasma deodorization device decomposes complex organic molecules into smaller and more biodegradable molecules, and then performs deep deodorization under the deodorizing action of the water washing filler and the biological filler, thereby improving the efficiency of biological filtration and enhancing the deodorization effect.

[0016] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the structure of the integrated pulse plasma bio-coupling deodorization device provided in this application; Figure 2 A schematic top view of the structure of the integrated pulse plasma bio-coupling deodorization device provided in this application; Figure 3A schematic diagram of a portion of the structure of the box body in the integrated pulse plasma bio-coupling deodorization device provided in this application; Figure 4 Schematic diagram of signal transmission of the purification system provided in this application.

[0020] The reference numerals are as follows: 1-integrated box, 11-box body, 12-air inlet, 13-exhaust outlet, 14-partition, 15-fan, 16-inlet fan, 17-inspection door, 111-steel frame, 112-inner support, 113-insulation layer, 114-outer protective plate, 2-pulse plasma reaction zone, 3-biological reaction zone, 31-biological filler zone, 32-biological liquid holding zone, 4-water washing reaction zone, 41-water washing filler zone, 42-water washing liquid holding zone, 5-narrow pulse power supply assembly, 6-air inlet duct, 61-filter group, 62-first air flow uniform distribution plate, 63-second air flow uniform distribution plate, 7-pulse plasma reaction assembly, 8-circulating spray assembly, 81-circulating water pump, 82-spray pipe, 83-nozzle, 9-filler support plate, 10-filler support column. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0022] To facilitate understanding of this embodiment, the application scenarios and design concepts of the embodiments of the present application are briefly introduced below.

[0023] During the actual operation, urban sewage stations, garbage transfer stations, and food waste treatment plants will release a large amount of odor pollutants into the surrounding air to form odorous gases. Odor pollutants are composed of a variety of gases, including hydrogen sulfide (H2S), ammonia (NH3), methane (CH4), mercaptans, fatty acids, and other volatile organic compounds (VOCs), such as low molecular fatty acids, amines, aldehydes, ketones, ethers, halogenated hydrocarbons, and aliphatic, aromatic, heterocyclic nitrogen and sulfides. Pollutants in odorous gases are seriously harmful to human health, economic construction activities, and environmental quality. The sewage flow, operating conditions, and sewage composition of sewage stations vary greatly, and the odor and concentration of odor pollutants released vary greatly. With the change of pressure in the sewage space, the overflow of odor is also intermittent.

[0024] At present, biological deodorization devices are often used to adsorb odorous substances in waste gas and then decompose them before discharging. However, biological filtration is selective in the treatment effect of different odorous pollutants, and the pollutants need to meet certain characteristics, such as good hydrophilicity, ability to be degraded by microorganisms, low biological toxicity, and low particle concentration. In addition, microorganisms are very sensitive to environmental conditions such as temperature, humidity and pH value, and it is very difficult to maintain organisms in the high-efficiency zone all year round. The growth and domestication of biofilms require a certain period of time. Faced with load changes, their self-regulation ability is poor and they cannot adjust the load in a short time. In addition, a single biological deodorization device requires a long residence time to achieve high deodorization efficiency, which corresponds to a large floor area. It is difficult to further improve the efficiency in urban residential areas with tight use. Therefore, it is necessary to seek new deodorization process combinations to cope with similar sewage stations with large pollutant changes, high odor, tight land occupation, and ultra-low emission requirements.

[0025] Based on this, an embodiment of the present application provides an integrated pulse plasma bio-coupling deodorization device and purification system.

[0026] Example 1 The present application provides an integrated pulse plasma bio-coupling deodorizing device, combined with Figure 1 As shown, the device includes: an integrated box 1, a pulse plasma reaction area 2, a biological reaction area 3 and a water washing reaction area 4.

[0027] The integrated box body 1 includes a box body 11 , an air inlet 12 and an air outlet 13 provided on the box body 11 .

[0028] The pulse plasma reaction zone 2 is arranged at one side of the integrated box 1 close to the air inlet 12; the pulse plasma reaction zone 2 includes a pulse plasma reaction component 7, an air inlet duct 6 and a narrow pulse power supply component 5.

[0029] The biological reaction zone 3 is arranged on one side of the integrated box body 1 close to the exhaust port 13; the biological reaction zone 3 includes a biological filler zone 31 and a biological liquid holding zone 32 separated by a filler support plate 9, and the biological filler zone 31 is filled with biological fillers; the top of the biological reaction zone 3 is connected to the exhaust port 13.

[0030] The water-washing reaction zone 4 is arranged between the pulse plasma reaction zone 2 and the biological reaction zone 3; the water-washing reaction zone 4 comprises a water-washing filler zone 41 and a water-washing liquid holding zone 42 separated by a filler support plate 9; the water-washing filler zone 41 is filled with water-washing fillers.

[0031] The pulse plasma reaction component 7 and the narrow pulse power supply component 5 are respectively connected to an external control unit (combined with Figure 2 as shown).

[0032] The integrated pulse plasma bio-coupling deodorization device provided in this embodiment integrates pulse plasma deodorization and bio-filler deodorization, and uses pulse plasma deodorization as the front-end process of bio-filler deodorization. Pulse plasma can effectively decompose pollutants that are difficult to biodegrade, and convert complex organic molecules into smaller, more biodegradable molecules to improve the efficiency of biofiltration. In this way, by coupling multiple deodorization principles such as physics, physicochemistry, and biology, and adapting to complex odor pollution components, the odor concentration can be effectively reduced before discharge.

[0033] It can be understood that each area in the integrated box body 1 is separated by a sealed partition 14. An airflow channel (not shown in the figure) is provided on the partition 14 between the water-washing reaction area 4 and the biological reaction area 3 to facilitate the airflow to flow to the biological reaction area 3, pass through the filler support plate 9 with through holes, move upward from the bottom to contact and collide with the biological filler, and be discharged along the exhaust port at the top after purification.

[0034] In this embodiment, an exhaust fan 15 is provided on one side of the narrow pulse power supply component 5 in the integrated box 1, and an intake fan 16 is provided on the side away from the narrow pulse power supply component 5 and close to the circulating water pump. Figure 2 As shown, an inspection door 17 is provided on the integrated box body 1 to facilitate the user to debug and inspect the equipment in the pulse plasma reaction area 2 .

[0035] It can be understood that the working principle of the integrated pulse plasma bio-coupling deodorization device provided by the present application is: The gas to be purified is introduced from the air inlet 12, and the gas flows along the air inlet duct 6. When the narrow pulse power supply component 5 supplies energy, the strong oxidizing free radicals generated by the pulse plasma reaction component 7 undergo redox reactions with the odor in the gas, which can effectively decompose pollutants that are difficult to biodegrade, and decompose complex organic molecules into smaller, more biodegradable molecules. At the same time, some unreacted active particles enter the water washing reaction zone 4 with the air flow to dissolve the soluble pollutants in the water, and the active particles continue to react with the oxidizable substances in the gas to remove most of the soluble pollutants. Among them, the bottom of the water washing filler area 41 is also provided with an air flow channel, and the purified gas leads to the biological reaction zone 3 along the air flow channel. Finally, it is deeply purified under the adsorption effect of the biological filler and the synergistic effect of the degradation of the biofilm, wherein the active particles that have not completely reacted can enhance the purification capacity of the biological reaction zone 3.

[0036] In this process, when the pulse plasma reaction is used as the front-end process of biological filtration, it can be used as a pretreatment for biological treatment and provide stable air intake conditions for the biological deodorization device. Through pulse discharge, the macromolecular organic matter or difficult-to-use inorganic matter in the waste gas can be broken into small molecules or active substances, which can enhance the biodegradability of odorous substances in the waste gas and is beneficial to the metabolism of biological strains. Controlling the removal rate of odorous substances in the pulse section provides relatively stable air intake conditions for biological treatment, allowing biological strains to work within a certain stable load, maintaining an appropriate number of biological bacteria, and keeping the growth of biological strains in a stable period. After the growth environment of biological strains is stable, the removal efficiency of the biological section is also improved accordingly, and the overall outlet odor of the coupling device is reduced, achieving the effect of ultra-low emissions. The pulse plasma biological coupling device can increase the overall air intake concentration and expand the scope of application. For example, the VOCs concentration of the inlet waste gas of general biological treatment is 5-50mg / m³, and the coupling device can treat the waste gas with a VOCs concentration of 5-100mg / m³.

[0037] Therefore, by coupling multiple deodorization principles such as physics, physicochemistry, and biology, it adapts to the complex components of odor pollutants, broadens the application scope of biological deodorization, improves the monomer and overall removal efficiency, and can reduce the final odor concentration of odor emissions to ultra-low emissions.

[0038] The pulse plasma reaction assembly 7 is composed of a ground electrode system and a discharge electrode system.

[0039] The grounding electrode system is fixed on the frame beam of the integrated box 1 and is insulated from the discharge electrode system. The grounding system is a modular assembly form, and the grounding electrode tube in a single module has high integrity, high strength, high concentricity and high flatness. The use of tubular grounding electrodes with the best discharge effect can effectively increase the generation of oxidizing active substances in the pulse plasma reaction zone 2 and improve the removal rate.

[0040] The discharge area length is preferably 800-1000mm stainless steel cylinder as the grounding electrode, and the discharge electrode is a gear array electrode. The nanosecond pulse special high-voltage power supply first generates a DC bus voltage by a three-phase rectifier circuit, and then generates nanosecond high-voltage pulses through a pulse generator, a pulse booster, and a pulse compression device to achieve the purpose of steepening the pulse front, narrowing the pulse width, and increasing the repetition frequency, thereby meeting the characteristics of high voltage and narrow pulses.

[0041] In combination with the first aspect, the inlet end of the air inlet duct 6 passes through the air inlet 12 and extends to the outside of the integrated box 1; the outlet end of the air inlet duct 6 extends to the water washing reaction zone 4.

[0042] The inlet end of the air inlet duct 6 is connected to the odor source to be purified. The odor enters the air inlet duct 6, is decomposed under the action of pulse plasma, and then enters the water-washed filler in the water-washed reaction zone 4 and the biological filler in the biological reaction zone 3 for purification to improve the deodorization efficiency.

[0043] In combination with the first aspect, the air inlet duct 6 further includes: a filter group 61 , a first airflow distribution plate 62 and a second airflow distribution plate 63 .

[0044] The filter group 61 is close to the inlet end of the air inlet duct 6; the filter group 61 includes a plurality of filters arranged at intervals.

[0045] The first airflow distribution plate 62 is disposed on one side of the filter screen group 61 and away from the inlet end.

[0046] The second air flow distribution plate 63 is close to the outlet end of the air inlet duct 6 .

[0047] Combination Figure 1 As shown, before the pulse plasma deodorization action, the odor source is firstly filtered through a plurality of filter screens arranged at intervals. The filter screens are composed of a metal wire woven mesh, which can filter out dust and large particles of impurities and then distribute the airflow through the first airflow distribution plate 62. The distributed airflow enters from the bottom of the pulse plasma reaction component 7. Under the action of the pulse plasma reaction component 7, strong oxidizing free radicals are generated through narrow pulse discharge to undergo redox reactions with the odor, so as to effectively remove some pollutants in the gas and decompose complex organic molecules into smaller molecules that are easier to biodegrade. Some unreacted active particles are passed from the outlet to the water washing reaction zone 4 after the airflow distribution action of the second airflow distribution plate.

[0048] The airflow passes through the water-washing packing area 41 from top to bottom. The water-washing packing area 41 is provided with a circulating spray assembly at the top. The soluble pollutants are dissolved in the water. The active particles generated by the pulse plasma reaction of the previous stage further react with the oxidizable substances to remove most of the soluble pollutants. The bottom of the water-washing packing area 41 is provided with an airflow channel to the biological reaction area 3, and finally the remaining pollutants are removed by biodegradation. In the biological reaction area 3, the biological packing adsorption and the biofilm degradation play a synergistic role, and a small amount of active particles that have not completely reacted enhance the two effects. The airflow passes through the biological packing area 31 from bottom to top, and is finally discharged from the exhaust port 13 at the top of the box body 11.

[0049] In combination with the first aspect, the air inlet duct 6 also includes a pressure sensor, a temperature sensor and a flow sensor, which are arranged between the filter group 61 and the first airflow distribution plate 62; the pressure sensor, the temperature sensor and the flow sensor are electrically connected to the control unit respectively.

[0050] The pressure in the air inlet duct 6 is detected by a pressure sensor, the temperature in the air inlet duct 6 is detected by a temperature sensor, and the air flow rate in the air inlet duct 6 is detected by a flow sensor.

[0051] In combination with the first aspect, the pulse plasma reaction component 7 is arranged in the air inlet duct 6, and the narrow pulse power supply component 5 is arranged outside the air inlet duct 6; the narrow pulse power supply component 5 is connected to the pulse plasma reaction component 7.

[0052] In combination with the first aspect, the circulating spray assembly 8 further includes: a circulating pipeline (not shown in the figure), a spray pipe 82 , a nozzle 83 and a circulating water pump 81 .

[0053] The circulation pipeline is arranged in the integrated box 1.

[0054] The spray pipe 82 is arranged in the water-washing reaction zone 4 and the biological reaction zone 3; the inlet end of the spray pipe 82 is connected to the circulation pipeline.

[0055] The nozzle 83 is communicated with the outlet end of the spray pipe 82 .

[0056] The circulating water pump 81 is disposed in the circulating pipeline, and the circulating water pump 81 is connected to the control unit.

[0057] In this embodiment, by adding a circulating spray assembly 8, under the control of the control unit, the circulating water pump 81 starts the water flow along the spray pipe 82 and flows out through the nozzle 83 to spray the water washing reaction area 4 and the biological reaction area 3.

[0058] The water-washing reaction zone 4 includes a water-washing packing zone 41 and a water-washing liquid holding zone 42 separated by a packing support plate 9; the water-washing packing zone 41 is filled with water-washing packing. The water packing can be a plastic packing such as a hollow ball, a ball ring, a stepped ring, etc. The packing support plate 9 provides support for the water-washing packing above under the support of the packing support column 10.

[0059] The biological reaction area 3 includes a biological filler area 31 and a biological liquid holding area 32 separated by a filler support plate 9; the biological filler area 31 is filled with biological fillers and provided with a biological film. The biological filler can be a carbon filler, or a composite filler such as volcanic stone and ceramsite; the filler support plate 9 can be a glass fiber reinforced plastic grating plate.

[0060] In this embodiment, the nozzle 83 is a spiral nozzle.

[0061] The inlet pipe of the circulating water pump 81 is provided with a filter, a ball valve, and an expansion joint, and the outlet pipe is provided with an expansion joint, a check valve, a flow meter, a pressure gauge, and a ball valve. The circulating water pump is connected to the control unit. The spray pipe 82 is connected to the circulating water pump 81, and the spray pipe 82 is connected to a plurality of nozzles 83, and the plurality of nozzles 83 are connected to the spray pipe 82, and the plurality of nozzles 83 are evenly spaced and arranged in a rectangular space in the integrated box 1.

[0062] In combination with the first aspect, the device further includes: a pH sensor, a humidity sensor and a flow sensor.

[0063] The pH sensor is arranged in the water washing liquid holding area 42 and the biological liquid holding area 32.

[0064] The humidity sensor is arranged in the biological filler area 31.

[0065] The flow sensor is arranged in the biological filler area 31.

[0066] The PH sensor, humidity sensor and flow sensor are respectively connected with the control unit.

[0067] Under the control of the control unit, the pH values ​​of the water-washing liquid holding area 42 and the biological liquid holding area 32, as well as the humidity and water flow rate in the biological filler area 31 are detected. By monitoring the humidity of the biological filler area 31, the switching state of the circulating water pump is adjusted, so that when the humidity of the biological filler area 31 does not meet the standard, the circulating water pump is turned on to spray the biological filler area 31 to increase the humidity.

[0068] In combination with the first aspect, the bottom plate of the air inlet duct 6 is inclined; a drain port (not shown in the figure) is provided at the bottom of the integrated box 1, and the lowest point of the air inlet duct 6 is connected to the drain port. In this way, condensed water and entrained water are easily collected and discharged from the drain port.

[0069] Combined with the first aspect, Figure 3 As shown, the box body 11 includes: a steel frame 111, an inner support 112, an insulation layer 113 and an outer protective plate 114.

[0070] There are a plurality of inner support members 112 , which are arranged at intervals inside the steel frame 111 .

[0071] The heat-insulating layer 113 is disposed between two adjacent inner support members 112 in the steel frame 111 .

[0072] The outer guard plate 114 is arranged on the outer side of the steel frame 111 .

[0073] In a second aspect, the present application provides a purification system, including a control unit and the above-mentioned device.

[0074] Understandable, such as Figure 4 As shown, the control unit is connected to the pulse plasma reaction component 7, the narrow pulse power supply component 5, and the circulating spray component 8. The control unit is also connected to a pressure sensor, a flow sensor, a temperature sensor, a pH sensor, a humidity sensor, etc. to execute a preset control program to realize automatic control.

[0075] As an example, the pulse plasma obtains a flow sensor and a temperature sensor from the air inlet duct 6 to obtain initial gas flow and temperature signals.

[0076] There are two ways to set the initial output power of the pulsed plasma, depending on whether the device is equipped with an online gas analyzer: (1) There is no online gas analyzer at the entrance and exit of the pulse plasma air duct.

[0077] Taking 5000m³ / h-10000m³ / h as an example, when the gas temperature is 20℃, the initial output power is set to 300W for every 1000m³ / h. In addition, the temperature correlation coefficient is set to correct the initial output power. The temperature correlation coefficient needs to be determined according to the actual air intake conditions on site to determine the specific working mode to be executed, and the system automatically adjusts the temperature correlation coefficient.

[0078] When the temperature is high in summer and more odor escapes, the system automatically determines that it needs to enter the high-power injection deodorization mode. The operating power is multiplied by the temperature correlation coefficient after the preliminary flow calculation is completed and determined; when the temperature is low in winter and less odor escapes, the operating power is multiplied by the temperature correlation coefficient after the preliminary flow calculation is completed and determined.

[0079] The temperature dependence coefficient of the system is adjusted based on the relationship between the Henry's law constant of the compound in water and temperature.

[0080] Taking sewage pumping station water as an example, the main sensory odor in the overflow is hydrogen sulfide (or ammonia). The relationship between the Henry coefficient of hydrogen sulfide (or ammonia) and temperature is shown in Table 1.

[0081] Table 1 shows the relationship between the Henry coefficient and temperature of hydrogen sulfide or ammonia, which are the main gases affecting sensory organs in spill odor.

[0082]

[0083] Referring to Table 1, based on 20°C, the Henry coefficient of H2S is 0.489. If the intake temperature is 30°C, the Henry coefficient of H2S corresponding to this is 0.617.

[0084] The basic power is: 300×(0.617 / 0.489)=378.53W / m³, that is, the initial set output power is adjusted to 378.53W for every 1000 m³ / h.

[0085] If the intake air temperature is 12℃, the corresponding coefficient is calculated by interpolation method: 0.372+(12-10)÷(15-10)×(0.418-0.372)=0.390, and the basic power is: 300×(0.390 / 0.489)=239.26W / m³, that is, the initial set output power is adjusted to 239.26W for every 1000 m³ / h.

[0086] (2) Online gas analyzer sampling ports are set at the inlet and outlet air ducts of the pulse plasma reaction zone.

[0087] Take the VOCs online instrument data as an example (the online analyzer here can be replaced with other major odorous substance online analyzers such as H2S and NH3): when the value of the pulse plasma inlet analyzer is less than a certain limit, such as the VOCs value <5mg / m³, the pulse plasma will not start running and will only serve as a gas passage; when the value of the pulse plasma inlet analyzer exceeds a certain limit, such as the VOCs value ≥5mg / m³, the pulse plasma will start running. Initial output value of pulse plasma: if VOCs value ≥5mg / m³, <50mg / m³, the initial output power is set to 200 W / 1000m³ for every 1000m³ / h; if VOCs value ≥50mg / m³, <100mg / m³, the initial output power is set to 300 W / 1000m³ for every 1000m³ / h; if VOCs value ≥100mg / m³, the initial output power is set to 500 W / 1000m³ for every 1000m³ / h; the initial output power can also be adjusted through tests after the equipment is installed.

[0088] After the initial startup is completed, the VOCs concentration at the outlet of the plasma zone is detected by the VOCs online analyzer at the outlet duct of the pulse plasma reaction zone. The automatic control component further adjusts the output power of the narrow pulse power supply component according to the outlet concentration. When the outlet VOCs concentration is higher than the set value, the output power of the narrow pulse power supply component is reduced. When the outlet VOCs concentration is lower than the set value, the output power of the narrow pulse power supply component is increased to keep the VOCs concentration of the outlet gas of the reaction zone within the preset value, generally 5-50 mg / m³. If the inlet VOCs is ≥200mg / m³, the VOCs removal rate is controlled at 60% according to the pulse plasma process section.

[0089] It can be understood that the initial output power of the narrow pulse power supply component can also be determined according to the inlet gas flow rate and temperature, so that the discharge electrode on the pulse plasma reaction component 7 is discharged. The discharge electrode discharges under high voltage to generate high-energy electrons to bombard the gas to be treated passing through the pulse plasma reaction component 7. The gas to be treated is activated, decomposed and ionized to generate strong oxidizing free radicals. The strong oxidizing free radicals react with the odor in the gas to be treated. The unreacted oxidizing substances enter the plasma zone outlet duct with the gas. After the initial startup is completed, the concentration of oxidizing substances at the outlet of the plasma zone is detected according to the oxidizing substance detector at the outlet duct of the plasma zone. After that, the output power of the narrow pulse power supply component 5 is further adjusted according to the oxidizing substance concentration. When the outlet oxidizing substance concentration is higher than the set value, the output power of the narrow pulse power supply component 5 is reduced. When the outlet oxidizing substance concentration is lower than the set value, the output power of the narrow pulse power supply component is increased, so that the oxidizing substance concentration of the reaction zone outlet gas is kept within the preset threshold.

[0090] In addition, the humidity can be monitored by a humidity sensor installed in the biological filler area 31 to control the opening and closing of the circulating water pump 81. When the monitored humidity is less than 80%, the circulating water pump 81 is turned on to humidify and spray the filler until the humidity reaches 100%, and then continue spraying for 5 minutes, and then turn off the circulating water pump 81.

[0091] The water washing reaction zone 4 and the biological reaction zone 3 are monitored by pH sensors to control the opening / closing of the water supply / drainage valves in each zone to change water. In this embodiment, the pH in the water washing reaction zone 4 and the biological reaction zone 3 is controlled at 6.5-8 to ensure the water washing effect and maintain the growth environment of the biological strains. In addition, the pulse plasma reaction component 7 is adjusted by frequency conversion to adapt to different working conditions, which makes up for the shortcoming that the biofilm in the biological reaction zone 3 reacts slowly to changes in working conditions.

[0092] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0093] In addition, in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0094] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0095] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0096] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art who is familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An integrated pulse plasma bio-coupling deodorization device, characterized in that: The device comprises: The integrated box body comprises a box body, an air inlet and an air outlet arranged on the box body; A pulse plasma reaction zone is arranged on one side of the integrated box body close to the air inlet; the pulse plasma reaction zone includes a pulse plasma reaction component, an air inlet duct and a narrow pulse power supply component; the pulse plasma reaction component is arranged in the air inlet duct, and the narrow pulse power supply component is arranged outside the air inlet duct; the narrow pulse power supply component is connected to the pulse plasma reaction component; the bottom plate of the air inlet duct is inclined; a drain outlet is arranged at the bottom of the integrated box body, and the lowest point of the air inlet duct is connected to the drain outlet; The biological reaction zone is arranged on one side of the integrated box body close to the exhaust port; the biological reaction zone includes a biological filler zone and a biological liquid holding zone separated by a filler support plate, the biological filler zone is filled with biological fillers and provided with a biological film; the top of the biological reaction zone is connected to the exhaust port; A water-washing reaction zone is provided between the pulse plasma reaction zone and the biological reaction zone; the water-washing reaction zone comprises a water-washing filler zone and a water-washing liquid holding zone separated by a filler support plate; the water-washing filler zone is filled with water-washing fillers; Wherein, the pulse plasma reaction component and the narrow pulse power supply component are respectively connected to an external control unit; The device also includes: A circulation pipeline is arranged in the integrated box; A spray pipe is provided in the water-washing reaction zone and the biological reaction zone; the inlet end of the spray pipe is connected to the circulation pipeline; A nozzle, connected to the outlet end of the spray pipe; A circulating water pump is arranged in the circulating pipeline, and the circulating water pump is connected to the control unit.

2. The device according to claim 1, characterized in that The inlet end of the air inlet duct passes through the air inlet and extends to the outside of the integrated box; the outlet end of the air inlet duct extends to the water washing reaction zone.

3. The device according to claim 2, characterized in that The air inlet duct also includes: A filter group, close to the inlet end of the air inlet duct; A first airflow distribution plate is arranged on one side of the filter group and away from the inlet end; The second air flow uniform distribution plate is close to the outlet end of the air inlet duct.

4. The device according to claim 3, characterized in that The air inlet duct also includes a pressure sensor, a temperature sensor and a flow sensor, which are arranged between the filter group and the first air flow distribution plate; the pressure sensor, the temperature sensor and the flow sensor are electrically connected to the control unit respectively.

5. The device according to claim 1, characterized in that The device also includes: pH sensors are provided in the water-washing liquid holding area and the biological liquid holding area; A humidity sensor is provided in the biological filler area; A flow sensor is arranged in the biological filler area; The PH sensor, the humidity sensor and the flow sensor are respectively connected to the control unit.

6. The device according to claim 1, characterized in that The box body comprises: Steel skeleton; There are multiple inner support members, which are arranged in intervals in the steel frame; A heat-insulating layer is provided between two adjacent inner support members in the steel frame; The outer guard plate is arranged on the outer side of the steel frame.

7. A purification system, characterized in that: Comprising the device as described in any one of claims 1-6.

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