CN113797724B - Purification and deodorization system and method for environment-friendly waste gas treatment - Google Patents
Purification and deodorization system and method for environment-friendly waste gas treatment Download PDFInfo
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- 238000000746 purification Methods 0.000 title claims abstract description 129
- 239000002912 waste gas Substances 0.000 title claims abstract description 43
- 238000004332 deodorization Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 498
- 238000012545 processing Methods 0.000 claims abstract description 75
- 230000007613 environmental effect Effects 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 83
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 41
- 229910021529 ammonia Inorganic materials 0.000 claims description 41
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 41
- 238000012937 correction Methods 0.000 claims description 40
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 230000001877 deodorizing effect Effects 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 239000010802 sludge Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 235000019645 odor Nutrition 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010170 biological method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000419 plant extract Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002503 metabolic effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
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- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/30—Controlling by gas-analysis apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a purification and deodorization system and a method for environmental protection waste gas treatment, wherein the air inlet end of a purification unit is communicated with a waste gas collecting device, and the air outlet end of the purification unit is communicated with a waste gas discharging device; the purification unit comprises a first purification device, a second purification device and a third purification device; the control unit comprises an acquisition module, a processing module and a control module, wherein the processing module is further used for controlling the opening states of the purification devices in real time according to the gas flow information in the gas inlet pipeline, and adjusting the opening states of the purification devices in real time according to the gas flow difference between the gas inlet end and the gas outlet end of the purification devices in the opening states. Through setting up the purification deodorization processing of going on waste gas of a plurality of purifier cooperations, through the real-time monitoring exhaust emission pipeline of control unit gas information and purifier's inlet end and the gas flow information who gives vent to anger the end, not only can greatly improve the treatment effect of waste gas, can also greatly improve the purification deodorization efficiency of waste gas.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a purification and deodorization system and method for environment-friendly waste gas treatment.
Background
At present, the existing deodorization technology is divided into a chemical absorption method, a physical adsorption method, an ion method, a plant extract spraying method, a biological method, an active oxygen method and the like. The biological treatment technology is to utilize the organic components in the waste gas as the energy source or other nutrients for life activity, and to convert the organic components into simple inorganic matters (CO 2, water, etc.) and cell constituent matters through metabolic degradation. The biological method treatment technology comprises the following steps: soil methods, biological filter beds, etc., wherein the biological filter bed is the most mature and most widely used.
Meanwhile, the odor belongs to the gas with large gas volume and low concentration, and the active oxygen method mainly aims at the condition of small gas volume, and the equipment is provided with a plurality of groups of parallel or serial devices, so that the method is not applicable to odor treatment, and the active oxygen method is eliminated; the plant extract spraying method has the advantages of general treatment effect and high operation cost, so that the plant extract spraying method is eliminated; the chemical absorption method can treat the gas with high and medium concentration in the atmosphere, has high purification efficiency, but has high investment and operation cost and severe control conditions, can generate secondary pollution, and is unsuitable because the treatment of the absorbed chemical waste liquid is a problem; physical adsorption can solve the above problems, however, the operation cost is high when the odor with a large amount of gas is faced, for example, the physical adsorption rule is adopted. Therefore, the biological method is suitable for treating large-gas low-concentration odor gas, and has the advantages of wide range of treated gas, high treatment efficiency, low investment and operation cost and no secondary pollution.
During the operation of the sewage treatment station, malodorous pollutants are generated due to metabolism of microorganisms, protozoa, fungus clusters and other organisms, and the main components of the malodorous pollutants are substances such as H 2S、NH3. The links for generating malodor are mainly as follows: a grid, a sedimentation tank and other pretreatment units, an activated sludge biological treatment unit, a sludge storage tank, a dewatering machine room and other sludge treatment units. The odor escaping amount of the sewage treatment station, the polluted water amount, BOD 5 load, DO in sewage, sludge amount, stockpiling amount, pollution weather characteristics and other factors. The diffusion attenuation process of malodor is mainly realized by physical dilution attenuation of three-dimensional space diffusion and chemical destructive attenuation of sunlight ultraviolet factors for a certain time.
The existing sewage treatment stations are mainly used for discharging waste gas in an organized way, and the discharged waste gas mainly comprises coarse grids, fine grids, hydrolysis adjusting tanks, accident tanks and malodorous odors (comprising hydrogen sulfide and ammonia) generated by a sludge dewatering machine room. Moreover, the prior coarse grille, fine grille, hydrolysis adjusting tank and accident pool are all airtight, the generated malodorous gas is collected completely through pipelines, a dehydrator of a sludge dehydration workshop is covered and airtight, the sludge belt is conveyed in a closed manner, a sludge pouring opening is provided with a gas collecting cover, and waste gas in the sludge dehydration workshop is captured through the gas collecting cover; the exhaust gas trapped by the pipeline and the gas collecting hood is collected together and then discharged. How to effectively purify and deodorize the collected waste gas becomes a current urgent problem to be solved.
Disclosure of Invention
In view of the above, the invention provides a purification and deodorization system and a method for environmental protection waste gas treatment, which aim to solve the problem of how to perform efficient purification and deodorization treatment on waste gas discharged from a sewage treatment station.
In one aspect, the invention provides a purification and deodorization system for environmental protection waste gas treatment, which comprises a purification unit and a control unit;
The air inlet end of the purification unit is communicated with the waste gas collecting device through an air inlet pipeline, the air outlet end of the purification unit is communicated with the waste gas discharging device through an air outlet pipeline, and the purification unit is used for purifying and deodorizing waste gas collected by the waste gas collecting device so as to discharge waste gas through the waste gas discharging device; wherein,
The purification unit comprises a first purification device, a second purification device and a third purification device, wherein the first purification device, the second purification device and the third purification device are arranged between the air inlet pipeline and the air outlet pipeline in a parallel connection mode, the air inlet end of the first purification device is provided with a first electromagnetic valve and a first front end gas flowmeter, the air outlet end of the first purification device is provided with a first rear end gas flowmeter, the air inlet end of the second purification device is provided with a second electromagnetic valve and a second front end gas flowmeter, the air outlet end of the second purification device is provided with a second rear end gas flowmeter, the air inlet end of the third purification device is provided with a third electromagnetic valve and a third front end gas flowmeter, and the air outlet end of the third purification device is provided with a third rear end gas flowmeter; the air inlet pipeline is provided with a hydrogen sulfide concentration detector, an ammonia concentration detector and a total gas flowmeter;
the control unit comprises an acquisition module, a processing module and a control module, wherein the acquisition module is respectively and electrically connected with three front-end gas flow meters, three rear-end gas flow meters, a hydrogen sulfide concentration detector, an ammonia concentration detector and a total gas flow meter; the control module is used for being respectively and electrically connected with the three electromagnetic valves so as to control the opening and closing of the electromagnetic valves; the processing module is used for receiving the hydrogen sulfide concentration information, the ammonia concentration information and the gas flow information acquired by the acquisition module;
the processing module is also used for controlling the opening state of each purifying device in real time according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purifying device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying device in the opening state.
Further, the processing module is further configured to set a first preset total gas flow A1, a second preset total gas flow A2, a third preset total gas flow A3, and a fourth preset total gas flow A4, where A1 is greater than A2 and less than A3 and less than A4;
The processing module is further configured to obtain a real-time total gas flow Δa in the air intake pipeline in real time, and control an on state of each purifying device according to a relationship between the real-time total gas flow Δa and each preset total gas flow:
when delta A is less than or equal to A1, only starting the first purifying device;
when A1 is less than delta A and less than or equal to A2, only starting the second purifying device;
when A2 is less than delta A and less than or equal to A3, only the first purifying device and the second purifying device are started;
And when A3 is less than delta A and less than or equal to A4, simultaneously starting the first purifying device, the second purifying device and the third purifying device.
Further, the processing module is further configured to set a first preset gas flow difference z1, a second preset gas flow difference z2, a third preset gas flow difference z3, and a fourth preset gas flow difference z4, where z1 is greater than z2 and less than z3 and less than z4;
The processing module is further configured to obtain a front-end real-time gas flow Δb11 and a rear-end real-time gas flow Δb12 of the first purifying device in real time, obtain a front-end real-time gas flow Δb21 and a rear-end real-time gas flow Δb22 of the second purifying device in real time, and obtain a front-end real-time gas flow Δb31 and a rear-end real-time gas flow Δb32 of the third purifying device in real time;
The processing module is also used for adjusting the opening state of each purifying device according to the relation between the gas flow difference value between the gas inlet end and the gas outlet end of each purifying device and each preset gas flow difference value;
when ΔA is less than or equal to A1, and only the first purification device is turned on:
if delta B11-delta B12 is less than or equal to z1, continuing to keep the first purifying device in an on state;
If z1 is less than delta B11-delta B12 and less than or equal to z2, closing the first purifying device at the moment, and only opening the second purifying device;
if z2 is less than delta B11-delta B12 and less than or equal to z3, starting the second purifying device at the moment, so that the first purifying device and the second purifying device are simultaneously in an on state;
if z3 is smaller than delta B11-delta B12 and smaller than or equal to z4, the second purifying device and the third purifying device are started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
Further, the processing module is further configured to, when A1 < Δa+.a2, and only the second purification device is turned on:
If delta B21-delta B22 is less than or equal to z1, the first purifying device is started at the moment, when delta B11-delta B12 is less than or equal to z1, the second purifying device is closed at the moment, only the first purifying device is started, and when z1 is less than delta B11-delta B12 is less than or equal to z2, the first purifying device is closed at the moment, and only the second purifying device is started;
If z1 is less than delta B21-delta B22 and less than or equal to z2, continuing to keep the second purifying device in an on state;
if z2 is less than delta B21-delta B22 and is less than or equal to z3, the first purifying device and the second purifying device are started at the same time;
if z3 is less than delta B21-delta B22 and is less than or equal to z4, the first purifying device, the second purifying device and the third purifying device are started at the same time.
Further, the processing module is further configured to, when A2 < Δa+.a3, and only the first and second purification devices are turned on:
If ΔB11- ΔB12 is less than or equal to z1 or ΔB21- ΔB22 is less than or equal to z1, continuing to keep only the first purifying device and the second purifying device on at the moment;
If z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 and less than or equal to z2, closing the first purifying device and opening the third purifying device at the moment so that the second purifying device and the third purifying device are simultaneously in an opening state;
if z2 is smaller than delta B21-delta B22, then the third purifying device is started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
Further, an electric regulating valve is further arranged on the air inlet pipeline and is used for regulating the air flow in the air inlet pipeline, and the electric regulating valve is electrically connected with the control module;
the processing module is further used for setting a first preset air inlet pipeline gas flow L1, a second preset air inlet pipeline gas flow L2, a third preset air inlet pipeline gas flow L3 and a fourth preset air inlet pipeline gas flow L4, wherein L1 is more than L2 is more than L3 is more than L4;
The processing module is further configured to set, in real time, the gas flow in the gas inlet pipe according to a relationship between a difference value between a front-end real-time gas flow Δb31 and a rear-end real-time gas flow Δb32 of the third purifying device and each preset gas flow difference value after the first purifying device, the second purifying device and the third purifying device are simultaneously turned on:
When delta B31-delta B32 is less than or equal to z1, selecting the first preset air inlet pipeline gas flow L1 as the gas flow in the air inlet pipeline;
when z1 is less than delta B31-delta B32 and is less than or equal to z2, selecting the second preset air inlet pipeline gas flow L2 as the gas flow in the air inlet pipeline;
when z2 is less than delta B31-delta B32 and is less than or equal to z3, selecting the third preset air inlet pipeline gas flow L3 as the gas flow in the air inlet pipeline;
When z3 is less than delta B31-delta B32 and is less than or equal to z4, selecting the fourth preset air inlet pipeline gas flow L4 as the gas flow in the air inlet pipeline;
When the i-th preset air inlet pipeline gas flow Li is selected as the air inlet pipeline gas flow Li, i=1, 2,3,4, and the opening degree of the electric regulating valve is regulated by the control module, so that the air inlet pipeline gas flow Li is the i-th preset air inlet pipeline gas flow Li.
Further, the processing module is further used for setting a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3 and a fourth preset hydrogen sulfide concentration C4, wherein C1 is more than C2 and less than C3 and less than C4; the processing module is further used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, wherein 1 is more than y1, y2 is more than y3 is more than y4 is more than 0.8;
the processing module is further configured to obtain a real-time hydrogen sulfide concentration Δc in the air intake pipe in real time, and select a correction coefficient according to a relationship between the real-time hydrogen sulfide concentration Δc and each preset hydrogen sulfide concentration, so as to correct the i-th preset air intake pipe gas flow Li in the air intake pipe:
When deltaC is less than or equal to C1, the first preset correction coefficient y1 is selected to correct the i preset air inlet pipeline gas flow Li, and the corrected gas flow Li x y1 is used as the gas flow in the air inlet pipeline;
When C1 is more than deltaC and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
When C2 is less than delta C and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the i-th preset air inlet pipeline gas flow Li, and taking the corrected gas flow Li x y3 as the gas flow in the air inlet pipeline;
when C3 is smaller than delta C and smaller than or equal to C4, the fourth preset correction coefficient y4 is selected to correct the gas flow Li of the ith preset gas inlet pipeline, and the corrected gas flow Li x y4 is used as the gas flow in the gas inlet pipeline.
Further, the processing module is further used for setting a first preset ammonia concentration D1, a second preset ammonia concentration D2, a third preset ammonia concentration D3 and a fourth preset ammonia concentration D4, wherein D1 is more than D2 and less than D3 and less than D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, wherein 1 is more than x1 and more than x2 is more than x3 and more than x4 is more than 0.8;
The processing module is further configured to, after selecting the i-th preset correction coefficient yi to correct the i-th preset intake duct gas flow Li as the gas flow in the intake duct, i=1, 2,3,4, obtain real-time ammonia concentration Δd in the intake duct in real time, and select a compensation coefficient according to a relationship between the real-time ammonia concentration Δd and each preset ammonia concentration, so as to compensate the corrected intake duct gas flow Li in the intake duct:
when Δd is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x1 as the gas flow in the gas inlet pipeline;
When D1 is smaller than delta D and is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x2 as the gas flow in the gas inlet pipeline;
When D2 is smaller than delta D and is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x3 as the gas flow in the gas inlet pipeline;
When D3 is smaller than Δd and smaller than or equal to D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x4 as the gas flow in the gas inlet pipeline.
Further, the first purifying device, the second purifying device and the third purifying device are all biological filter beds.
Compared with the prior art, the invention has the beneficial effects that the purification and deodorization treatment of the waste gas is cooperatively carried out by arranging the plurality of purification devices, and the opening states of the purification devices are intelligently controlled by monitoring the gas information in the waste gas discharge pipeline and the gas flow information of the gas inlet end and the gas outlet end of the purification devices in real time through the control unit, so that the treatment effect of the waste gas can be greatly improved, the purification and deodorization efficiency of the waste gas can be greatly improved, the input of manpower is reduced, and the cost during waste gas treatment is greatly saved.
On the other hand, the invention also provides a purification and deodorization method for environmental protection waste gas treatment, which is implemented by adopting the purification and deodorization system for environmental protection waste gas treatment and comprises the following steps:
acquiring hydrogen sulfide concentration information, ammonia concentration information and gas flow information in an air inlet pipeline;
Acquiring gas flow information of an air inlet end and an air outlet end of the purification device;
And controlling the opening states of the purifying devices according to the gas flow information in the gas inlet pipeline, and adjusting the opening states of the purifying devices in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying devices in the opening states.
It is understood that the above-mentioned purification and deodorization method for environmental protection exhaust gas treatment has the same advantageous effects as the purification and deodorization system for environmental protection exhaust gas treatment, and will not be described herein.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of a purification and deodorization system for treating environmental-friendly waste gas according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of a purification and deodorization system for environmental protection exhaust gas treatment according to an embodiment of the present invention;
Fig. 3 is a flowchart of a method for purifying and deodorizing an environmental-friendly exhaust gas treatment according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The deodorizing principle of the biological filter in the implementation is as follows: the principle of the deodorizing technique by the biological filter method is to utilize the biodegradation of microorganisms to absorb and degrade the odor substances so as to achieve the aim of deodorizing. The odor passes through the wet, porous and active microorganism-filled filter layer, and utilizes the adsorption, absorption and degradation functions of microorganism cells on malodorous substances, and the characteristics of small cell units, large surface area, strong adsorptivity and various metabolic types of microorganisms to decompose the malodorous substances into simple inorganic substances such as CO 2、H2O、H2SO4、HNO3 after adsorption. The biological filter method has high deodorizing efficiency and is suitable for treating waste gas with large air volume and low concentration.
Referring to fig. 1, the present embodiment provides an environment-friendly exhaust gas treatment purification and deodorization system, which includes a purification unit and a control unit.
Specifically, the air inlet end of the purification unit is communicated with an exhaust gas collecting device through an air inlet pipeline 4, the exhaust gas collecting device is a gas collecting hood in sewage treatment, and exhaust gas in a sewage treatment station is uniformly collected through the gas collecting hood and then discharged.
Specifically, the air outlet end of the purifying unit is communicated with the exhaust gas discharge device 6 through an air outlet pipeline 5, and the purifying unit is used for purifying and deodorizing the exhaust gas collected by the exhaust gas collecting device so as to discharge the exhaust gas through the exhaust gas discharge device 6. The exhaust gas discharge device 6 is an exhaust stack or chimney.
Specifically, the purification unit includes a first purification device 1, a second purification device 2, and a third purification device 3, the first purification device 1, the second purification device 2, and the third purification device 3 are disposed in parallel between the air inlet pipe 4 and the air outlet pipe 5, and the first purification device 1, the second purification device 2, and the third purification device 3 are respectively in communication with the air inlet pipe 4 and the air outlet pipe 5 through pipes.
Specifically, the air inlet end of the first purifying device 1 is provided with a first electromagnetic valve 11 and a first front end gas flowmeter 12, and the air outlet end of the first purifying device 1 is provided with a first back end gas flowmeter 13. The first solenoid valve 11 is used to control whether exhaust gas is supplied into the first purification apparatus 1 to control the open state of the first purification apparatus 1. The first front-end gas flowmeter 12 is used for acquiring gas flow information of the gas inlet end of the first purification device 1, and the first back-end gas flowmeter 13 is used for acquiring gas flow information of the gas outlet end of the first purification device 1.
Specifically, the air inlet end of the second purifying device 2 is provided with a second electromagnetic valve 21 and a second front end gas flowmeter 22, and the air outlet end of the second purifying device 2 is provided with a second back end gas flowmeter 23. The second electromagnetic valve 21 is used to control whether the exhaust gas is supplied into the second purification apparatus 2 to control the open state of the second purification apparatus 2. The second front-end gas flowmeter 22 is used for acquiring gas flow information of the gas inlet end of the second purification device 2, and the second back-end gas flowmeter 23 is used for acquiring gas flow information of the gas outlet end of the second purification device 2.
Specifically, the air inlet end of the third purifying device 3 is provided with a third electromagnetic valve 31 and a third front end gas flowmeter 32, and the air outlet end of the third purifying device 3 is provided with a third back end gas flowmeter 33. The third solenoid valve 31 is used to control whether exhaust gas is supplied into the third purification apparatus 3 to control the open state of the third purification apparatus 3. The third front-end gas flowmeter 32 is configured to collect gas flow information of the gas inlet end of the third purifying device 3, and the third back-end gas flowmeter 33 is configured to collect gas flow information of the gas outlet end of the third purifying device 3.
Specifically, the intake pipe 4 is provided with a hydrogen sulfide concentration detector 8, an ammonia concentration detector 9, and a total gas flow meter 7.
Specifically, the first purification device 1, the second purification device 2 and the third purification device 3 are all biological filter beds.
Specifically, the air inlet pipeline 4 is further provided with an electric regulating valve 10, the electric regulating valve 10 is used for regulating the air flow in the air inlet pipeline, and the electric regulating valve 10 is electrically connected with the control module.
Specifically, as shown in fig. 2, the control unit comprises an acquisition module, a processing module and a control module, wherein the acquisition module is electrically connected with three front-end gas flow meters, three rear-end gas flow meters, a hydrogen sulfide concentration detector 8, an ammonia concentration detector 9 and a total gas flow meter 7 respectively; the control module is used for being respectively and electrically connected with the three electromagnetic valves so as to control the opening and closing of the electromagnetic valves; the processing module is used for receiving the hydrogen sulfide concentration information, the ammonia concentration information and the gas flow information acquired by the acquisition module.
Specifically, the processing module is further configured to control the on state of each purifying device in real time according to the gas flow information in the gas inlet pipe 4, and adjust the on state of each purifying device in real time according to the difference between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying device in the on state.
It can be seen that the purification and deodorization treatment of exhaust gas can be performed cooperatively by providing a plurality of purification devices in this embodiment, so that the purification and deodorization effect and efficiency of exhaust gas can be effectively improved.
Further, through the gas information in the real-time monitoring exhaust emission pipeline of the control unit that sets up and the gas flow information of purifier's inlet end and end of giving vent to anger, the open state of each purifier of intelligent control, specifically, through real-time basis the gas flow information control in the inlet pipeline the open state of each purifier to the difference between the gas flow information of the inlet end of purifier and the gas flow information of the end of giving vent to anger that is in the open state adjusts the open state of each purifier, not only can greatly improve the treatment effect of waste gas, can also greatly improve the purification deodorization efficiency of waste gas, reduce the input of manpower, greatly saved the cost when waste gas treatment.
Specifically, the processing module is further configured to set a first preset total gas flow A1, a second preset total gas flow A2, a third preset total gas flow A3, and a fourth preset total gas flow A4, where A1 is greater than A2 and less than A3 and less than A4;
The processing module is further configured to obtain a real-time total gas flow Δa in the air intake pipeline in real time, and control an on state of each purifying device according to a relationship between the real-time total gas flow Δa and each preset total gas flow:
when delta A is less than or equal to A1, only starting the first purifying device;
when A1 is less than delta A and less than or equal to A2, only starting the second purifying device;
when A2 is less than delta A and less than or equal to A3, only the first purifying device and the second purifying device are started;
And when A3 is less than delta A and less than or equal to A4, simultaneously starting the first purifying device, the second purifying device and the third purifying device.
Specifically, the processing module is further configured to set a first preset gas flow difference z1, a second preset gas flow difference z2, a third preset gas flow difference z3, and a fourth preset gas flow difference z4, where z1 is greater than z2 and less than z3 and less than z4;
The processing module is further configured to obtain a front-end real-time gas flow Δb11 and a rear-end real-time gas flow Δb12 of the first purifying device in real time, obtain a front-end real-time gas flow Δb21 and a rear-end real-time gas flow Δb22 of the second purifying device in real time, and obtain a front-end real-time gas flow Δb31 and a rear-end real-time gas flow Δb32 of the third purifying device in real time;
The processing module is also used for adjusting the opening state of each purifying device according to the relation between the gas flow difference value between the gas inlet end and the gas outlet end of each purifying device and each preset gas flow difference value;
when ΔA is less than or equal to A1, and only the first purification device is turned on:
if delta B11-delta B12 is less than or equal to z1, continuing to keep the first purifying device in an on state;
If z1 is less than delta B11-delta B12 and less than or equal to z2, closing the first purifying device at the moment, and only opening the second purifying device;
if z2 is less than delta B11-delta B12 and less than or equal to z3, starting the second purifying device at the moment, so that the first purifying device and the second purifying device are simultaneously in an on state;
if z3 is smaller than delta B11-delta B12 and smaller than or equal to z4, the second purifying device and the third purifying device are started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
Specifically, the processing module is further configured to, when A1 < ΔA+.A2, and only the second purification device is turned on:
If delta B21-delta B22 is less than or equal to z1, the first purifying device is started at the moment, when delta B11-delta B12 is less than or equal to z1, the second purifying device is closed at the moment, only the first purifying device is started, and when z1 is less than delta B11-delta B12 is less than or equal to z2, the first purifying device is closed at the moment, and only the second purifying device is started;
If z1 is less than delta B21-delta B22 and less than or equal to z2, continuing to keep the second purifying device in an on state;
if z2 is less than delta B21-delta B22 and is less than or equal to z3, the first purifying device and the second purifying device are started at the same time;
if z3 is less than delta B21-delta B22 and is less than or equal to z4, the first purifying device, the second purifying device and the third purifying device are started at the same time.
Specifically, the processing module is further configured to, when A2 < Δa+.a3, and only the first and second purification devices are turned on:
If ΔB11- ΔB12 is less than or equal to z1 or ΔB21- ΔB22 is less than or equal to z1, continuing to keep only the first purifying device and the second purifying device on at the moment;
If z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 and less than or equal to z2, closing the first purifying device and opening the third purifying device at the moment so that the second purifying device and the third purifying device are simultaneously in an opening state;
if z2 is smaller than delta B21-delta B22, then the third purifying device is started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
Specifically, the processing module is further configured to set a first preset air intake duct gas flow rate L1, a second preset air intake duct gas flow rate L2, a third preset air intake duct gas flow rate L3, and a fourth preset air intake duct gas flow rate L4, where L1 > L2 > L3 > L4;
The processing module is further configured to set, in real time, the gas flow in the gas inlet pipe according to a relationship between a difference value between a front-end real-time gas flow Δb31 and a rear-end real-time gas flow Δb32 of the third purifying device and each preset gas flow difference value after the first purifying device, the second purifying device and the third purifying device are simultaneously turned on:
When delta B31-delta B32 is less than or equal to z1, selecting the first preset air inlet pipeline gas flow L1 as the gas flow in the air inlet pipeline;
when z1 is less than delta B31-delta B32 and is less than or equal to z2, selecting the second preset air inlet pipeline gas flow L2 as the gas flow in the air inlet pipeline;
when z2 is less than delta B31-delta B32 and is less than or equal to z3, selecting the third preset air inlet pipeline gas flow L3 as the gas flow in the air inlet pipeline;
When z3 is less than delta B31-delta B32 and is less than or equal to z4, selecting the fourth preset air inlet pipeline gas flow L4 as the gas flow in the air inlet pipeline;
When the i-th preset air inlet pipeline gas flow Li is selected as the air inlet pipeline gas flow Li, i=1, 2,3,4, and the opening degree of the electric regulating valve is regulated by the control module, so that the air inlet pipeline gas flow Li is the i-th preset air inlet pipeline gas flow Li.
Specifically, the processing module is further configured to set a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3, and a fourth preset hydrogen sulfide concentration C4, where C1 is greater than C2 and less than C3 is greater than C4; the processing module is further used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, wherein 1 is more than y1, y2 is more than y3 is more than y4 is more than 0.8;
the processing module is further configured to obtain a real-time hydrogen sulfide concentration Δc in the air intake pipe in real time, and select a correction coefficient according to a relationship between the real-time hydrogen sulfide concentration Δc and each preset hydrogen sulfide concentration, so as to correct the i-th preset air intake pipe gas flow Li in the air intake pipe:
When deltaC is less than or equal to C1, the first preset correction coefficient y1 is selected to correct the i preset air inlet pipeline gas flow Li, and the corrected gas flow Li x y1 is used as the gas flow in the air inlet pipeline;
When C1 is more than deltaC and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
When C2 is less than delta C and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the i-th preset air inlet pipeline gas flow Li, and taking the corrected gas flow Li x y3 as the gas flow in the air inlet pipeline;
when C3 is smaller than delta C and smaller than or equal to C4, the fourth preset correction coefficient y4 is selected to correct the gas flow Li of the ith preset gas inlet pipeline, and the corrected gas flow Li x y4 is used as the gas flow in the gas inlet pipeline.
Specifically, the processing module is further configured to set a first preset ammonia concentration D1, a second preset ammonia concentration D2, a third preset ammonia concentration D3, and a fourth preset ammonia concentration D4, where D1 is greater than D2 and less than D3 and less than D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, wherein 1 is more than x1 and more than x2 is more than x3 and more than x4 is more than 0.8;
The processing module is further configured to, after selecting the i-th preset correction coefficient yi to correct the i-th preset intake duct gas flow Li as the gas flow in the intake duct, i=1, 2,3,4, obtain real-time ammonia concentration Δd in the intake duct in real time, and select a compensation coefficient according to a relationship between the real-time ammonia concentration Δd and each preset ammonia concentration, so as to compensate the corrected intake duct gas flow Li in the intake duct:
when Δd is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x1 as the gas flow in the gas inlet pipeline;
When D1 is smaller than delta D and is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x2 as the gas flow in the gas inlet pipeline;
When D2 is smaller than delta D and is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x3 as the gas flow in the gas inlet pipeline;
When D3 is smaller than Δd and smaller than or equal to D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x4 as the gas flow in the gas inlet pipeline.
It can be seen that the above embodiment, through the monitoring of the gas flow information and the intelligent data processing in the exhaust gas purification and deodorization process and the intelligent control of the purification device, not only greatly improves the maintenance period of the purification device, but also effectively improves the treatment effect of exhaust gas purification and deodorization, effectively protects the environment, simultaneously greatly improves the exhaust gas purification and deodorization efficiency, and saves the time cost and the construction cost.
Referring to fig. 3, in another preferred embodiment based on the above-described embodiment, the present embodiment provides a method for purifying and deodorizing an environmental-friendly exhaust gas treatment, and the method of the present embodiment is preferably implemented using the purifying and deodorizing system for environmental-friendly exhaust gas treatment of the above-described embodiment, comprising the steps of:
step a: acquiring hydrogen sulfide concentration information, ammonia concentration information and gas flow information in an air inlet pipeline;
Step b: acquiring gas flow information of an air inlet end and an air outlet end of the purification device;
Step c: and controlling the opening states of the purifying devices according to the gas flow information in the gas inlet pipeline, and adjusting the opening states of the purifying devices in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying devices in the opening states.
It can be seen that the purification and deodorization system and method for treating the environmental-friendly exhaust gas in the above embodiments have the same advantages, and are not described herein.
Specifically, in the step c, the processing module controls the opening state of each purifying device in real time according to the gas flow information in the gas inlet pipeline, and adjusts the opening state of each purifying device in real time according to the difference between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying device in the opening state.
It can be seen that the method of the present invention can effectively improve the deodorizing and purifying effect and efficiency of the exhaust gas by arranging a plurality of purifying devices to cooperatively perform the deodorizing and purifying treatment of the exhaust gas.
Specifically, a first preset total gas flow A1, a second preset total gas flow A2, a third preset total gas flow A3 and a fourth preset total gas flow A4 are set through the processing module, wherein A1 is more than A2 and less than A3 and less than A4;
The method comprises the steps of acquiring real-time total gas flow delta A in an air inlet pipeline in real time through the processing module, and controlling the opening state of each purifying device according to the relation between the real-time total gas flow delta A and each preset total gas flow:
when delta A is less than or equal to A1, only starting the first purifying device;
when A1 is less than delta A and less than or equal to A2, only starting the second purifying device;
when A2 is less than delta A and less than or equal to A3, only the first purifying device and the second purifying device are started;
And when A3 is less than delta A and less than or equal to A4, simultaneously starting the first purifying device, the second purifying device and the third purifying device.
Specifically, a first preset gas flow difference value z1, a second preset gas flow difference value z2, a third preset gas flow difference value z3 and a fourth preset gas flow difference value z4 are set through the processing module, and z1 is more than z2 and less than z3 and less than z4;
The processing module is used for acquiring the front-end real-time gas flow delta B11 and the rear-end real-time gas flow delta B12 of the first purifying device in real time, acquiring the front-end real-time gas flow delta B21 and the rear-end real-time gas flow delta B22 of the second purifying device in real time, and acquiring the front-end real-time gas flow delta B31 and the rear-end real-time gas flow delta B32 of the third purifying device in real time;
The processing module adjusts the opening state of each purifying device according to the relation between the gas flow difference value between the gas inlet end and the gas outlet end of each purifying device and each preset gas flow difference value;
when ΔA is less than or equal to A1, and only the first purification device is turned on:
if delta B11-delta B12 is less than or equal to z1, continuing to keep the first purifying device in an on state;
If z1 is less than delta B11-delta B12 and less than or equal to z2, closing the first purifying device at the moment, and only opening the second purifying device;
if z2 is less than delta B11-delta B12 and less than or equal to z3, starting the second purifying device at the moment, so that the first purifying device and the second purifying device are simultaneously in an on state;
if z3 is smaller than delta B11-delta B12 and smaller than or equal to z4, the second purifying device and the third purifying device are started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
Specifically, when A1 < ΔA.ltoreq.A2, and only the second purification device is turned on:
If delta B21-delta B22 is less than or equal to z1, the first purifying device is started at the moment, when delta B11-delta B12 is less than or equal to z1, the second purifying device is closed at the moment, only the first purifying device is started, and when z1 is less than delta B11-delta B12 is less than or equal to z2, the first purifying device is closed at the moment, and only the second purifying device is started;
If z1 is less than delta B21-delta B22 and less than or equal to z2, continuing to keep the second purifying device in an on state;
if z2 is less than delta B21-delta B22 and is less than or equal to z3, the first purifying device and the second purifying device are started at the same time;
if z3 is less than delta B21-delta B22 and is less than or equal to z4, the first purifying device, the second purifying device and the third purifying device are started at the same time.
Specifically, when A2 < ΔA.ltoreq.A3, and only the first purification device and the second purification device are turned on:
If ΔB11- ΔB12 is less than or equal to z1 or ΔB21- ΔB22 is less than or equal to z1, continuing to keep only the first purifying device and the second purifying device on at the moment;
If z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 and less than or equal to z2, closing the first purifying device and opening the third purifying device at the moment so that the second purifying device and the third purifying device are simultaneously in an opening state;
if z2 is smaller than delta B21-delta B22, then the third purifying device is started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
Specifically, a first preset air inlet pipeline gas flow L1, a second preset air inlet pipeline gas flow L2, a third preset air inlet pipeline gas flow L3 and a fourth preset air inlet pipeline gas flow L4 are set through the processing module, wherein L1 is more than L2 is more than L3 is more than L4;
After the first purifying device, the second purifying device and the third purifying device are simultaneously started, setting the gas flow in the gas inlet pipeline in real time according to the relation between the difference value between the front-end real-time gas flow delta B31 and the rear-end real-time gas flow delta B32 of the third purifying device and each preset gas flow difference value:
When delta B31-delta B32 is less than or equal to z1, selecting the first preset air inlet pipeline gas flow L1 as the gas flow in the air inlet pipeline;
when z1 is less than delta B31-delta B32 and is less than or equal to z2, selecting the second preset air inlet pipeline gas flow L2 as the gas flow in the air inlet pipeline;
when z2 is less than delta B31-delta B32 and is less than or equal to z3, selecting the third preset air inlet pipeline gas flow L3 as the gas flow in the air inlet pipeline;
When z3 is less than delta B31-delta B32 and is less than or equal to z4, selecting the fourth preset air inlet pipeline gas flow L4 as the gas flow in the air inlet pipeline;
When the i-th preset air inlet pipeline gas flow Li is selected as the air inlet pipeline gas flow Li, i=1, 2,3,4, and the opening degree of the electric regulating valve is regulated by the control module, so that the air inlet pipeline gas flow Li is the i-th preset air inlet pipeline gas flow Li.
Specifically, a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3 and a fourth preset hydrogen sulfide concentration C4 are set through the processing module, and C1 is more than C2 and less than C3 and less than C4; the processing module is further used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, wherein 1 is more than y1, y2 is more than y3 is more than y4 is more than 0.8;
The real-time hydrogen sulfide concentration delta C in the air inlet pipeline is obtained in real time through the processing module, and a correction coefficient is selected according to the relation between the real-time hydrogen sulfide concentration delta C and each preset hydrogen sulfide concentration so as to correct the ith preset air inlet pipeline gas flow Li in the air inlet pipeline:
When deltaC is less than or equal to C1, the first preset correction coefficient y1 is selected to correct the i preset air inlet pipeline gas flow Li, and the corrected gas flow Li x y1 is used as the gas flow in the air inlet pipeline;
When C1 is more than deltaC and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
When C2 is less than delta C and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the i-th preset air inlet pipeline gas flow Li, and taking the corrected gas flow Li x y3 as the gas flow in the air inlet pipeline;
when C3 is smaller than delta C and smaller than or equal to C4, the fourth preset correction coefficient y4 is selected to correct the gas flow Li of the ith preset gas inlet pipeline, and the corrected gas flow Li x y4 is used as the gas flow in the gas inlet pipeline.
Specifically, a first preset ammonia concentration D1, a second preset ammonia concentration D2, a third preset ammonia concentration D3 and a fourth preset ammonia concentration D4 are set through the processing module, and D1 is more than D2 and less than D3 and less than D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, wherein 1 is more than x1 and more than x2 is more than x3 and more than x4 is more than 0.8;
after the ith preset correction coefficient yi is selected to correct the ith preset intake pipe gas flow Li as the gas flow in the intake pipe, i=1, 2,3,4, acquiring real-time ammonia concentration Δd in the intake pipe in real time, and selecting a compensation coefficient according to the relationship between the real-time ammonia concentration Δd and each preset ammonia concentration, so as to compensate the corrected intake pipe gas flow Li in the intake pipe:
when Δd is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x1 as the gas flow in the gas inlet pipeline;
When D1 is smaller than delta D and is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x2 as the gas flow in the gas inlet pipeline;
When D2 is smaller than delta D and is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x3 as the gas flow in the gas inlet pipeline;
When D3 is smaller than Δd and smaller than or equal to D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x4 as the gas flow in the gas inlet pipeline.
It can be seen that the above embodiment, through the monitoring of the gas flow information and the intelligent data processing in the exhaust gas purification and deodorization process and the intelligent control of the purification device, not only greatly improves the maintenance period of the purification device, but also effectively improves the treatment effect of exhaust gas purification and deodorization, effectively protects the environment, simultaneously greatly improves the exhaust gas purification and deodorization efficiency, and saves the time cost and the construction cost.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (8)
1. The purification and deodorization system for the environmental-friendly waste gas treatment is characterized by comprising a purification unit and a control unit;
The air inlet end of the purification unit is communicated with the waste gas collecting device through an air inlet pipeline, the air outlet end of the purification unit is communicated with the waste gas discharging device through an air outlet pipeline, and the purification unit is used for purifying and deodorizing waste gas collected by the waste gas collecting device so as to discharge waste gas through the waste gas discharging device; wherein,
The purification unit comprises a first purification device, a second purification device and a third purification device, wherein the first purification device, the second purification device and the third purification device are arranged between the air inlet pipeline and the air outlet pipeline in a parallel connection mode, the air inlet end of the first purification device is provided with a first electromagnetic valve and a first front end gas flowmeter, the air outlet end of the first purification device is provided with a first rear end gas flowmeter, the air inlet end of the second purification device is provided with a second electromagnetic valve and a second front end gas flowmeter, the air outlet end of the second purification device is provided with a second rear end gas flowmeter, the air inlet end of the third purification device is provided with a third electromagnetic valve and a third front end gas flowmeter, and the air outlet end of the third purification device is provided with a third rear end gas flowmeter; the air inlet pipeline is provided with a hydrogen sulfide concentration detector, an ammonia concentration detector and a total gas flowmeter;
the control unit comprises an acquisition module, a processing module and a control module, wherein the acquisition module is respectively and electrically connected with three front-end gas flow meters, three rear-end gas flow meters, a hydrogen sulfide concentration detector, an ammonia concentration detector and a total gas flow meter; the control module is used for being respectively and electrically connected with the three electromagnetic valves so as to control the opening and closing of the electromagnetic valves; the processing module is used for receiving the hydrogen sulfide concentration information, the ammonia concentration information and the gas flow information acquired by the acquisition module;
the processing module is also used for controlling the opening state of each purifying device in real time according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purifying device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying device in the opening state;
the processing module is also used for setting a first preset total gas flow A1, a second preset total gas flow A2, a third preset total gas flow A3 and a fourth preset total gas flow A4, wherein A1 is more than A2 and less than A3 and less than A4;
The processing module is further configured to obtain a real-time total gas flow Δa in the air intake pipeline in real time, and control an on state of each purifying device according to a relationship between the real-time total gas flow Δa and each preset total gas flow:
when delta A is less than or equal to A1, only starting the first purifying device;
when A1 is less than delta A and less than or equal to A2, only starting the second purifying device;
when A2 is less than delta A and less than or equal to A3, only the first purifying device and the second purifying device are started;
When A3 is less than delta A and less than or equal to A4, the first purifying device, the second purifying device and the third purifying device are simultaneously started;
The processing module is also used for setting a first preset gas flow difference value z1, a second preset gas flow difference value z2, a third preset gas flow difference value z3 and a fourth preset gas flow difference value z4, wherein z1 is more than z2 and less than z3 and less than z4;
The processing module is further configured to obtain a front-end real-time gas flow Δb11 and a rear-end real-time gas flow Δb12 of the first purifying device in real time, obtain a front-end real-time gas flow Δb21 and a rear-end real-time gas flow Δb22 of the second purifying device in real time, and obtain a front-end real-time gas flow Δb31 and a rear-end real-time gas flow Δb32 of the third purifying device in real time;
The processing module is also used for adjusting the opening state of each purifying device according to the relation between the gas flow difference value between the gas inlet end and the gas outlet end of each purifying device and each preset gas flow difference value;
when ΔA is less than or equal to A1, and only the first purification device is turned on:
if delta B11-delta B12 is less than or equal to z1, continuing to keep the first purifying device in an on state;
If z1 is less than delta B11-delta B12 and less than or equal to z2, closing the first purifying device at the moment, and only opening the second purifying device;
if z2 is less than delta B11-delta B12 and less than or equal to z3, starting the second purifying device at the moment, so that the first purifying device and the second purifying device are simultaneously in an on state;
if z3 is smaller than delta B11-delta B12 and smaller than or equal to z4, the second purifying device and the third purifying device are started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
2. The purification and deodorization system for environmental protection exhaust gas treatment according to claim 1, wherein,
The processing module is also used for when A1 is less than delta A and less than or equal to A2 and only the second purifying device is started:
If delta B21-delta B22 is less than or equal to z1, the first purifying device is started at the moment, when delta B11-delta B12 is less than or equal to z1, the second purifying device is closed at the moment, only the first purifying device is started, and when z1 is less than delta B11-delta B12 is less than or equal to z2, the first purifying device is closed at the moment, and only the second purifying device is started;
If z1 is less than delta B21-delta B22 and less than or equal to z2, continuing to keep the second purifying device in an on state;
if z2 is less than delta B21-delta B22 and is less than or equal to z3, the first purifying device and the second purifying device are started at the same time;
if z3 is less than delta B21-delta B22 and is less than or equal to z4, the first purifying device, the second purifying device and the third purifying device are started at the same time.
3. The purification and deodorization system for environmental protection exhaust gas treatment according to claim 2, wherein,
The processing module is also used for when A2 is less than delta A and less than or equal to A3 and only the first purifying device and the second purifying device are started:
If ΔB11- ΔB12 is less than or equal to z1 or ΔB21- ΔB22 is less than or equal to z1, continuing to keep only the first purifying device and the second purifying device on at the moment;
If z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 and less than or equal to z2, closing the first purifying device and opening the third purifying device at the moment so that the second purifying device and the third purifying device are simultaneously in an opening state;
if z2 is smaller than delta B21-delta B22, then the third purifying device is started at the moment, so that the first purifying device, the second purifying device and the third purifying device are simultaneously in an open state.
4. The purification and deodorization system for environmental protection exhaust gas treatment according to claim 3, wherein,
The air inlet pipeline is also provided with an electric regulating valve, the electric regulating valve is used for regulating the air flow in the air inlet pipeline, and the electric regulating valve is electrically connected with the control module;
the processing module is further used for setting a first preset air inlet pipeline gas flow L1, a second preset air inlet pipeline gas flow L2, a third preset air inlet pipeline gas flow L3 and a fourth preset air inlet pipeline gas flow L4, wherein L1 is more than L2 is more than L3 is more than L4;
The processing module is further configured to set, in real time, the gas flow in the gas inlet pipe according to a relationship between a difference value between a front-end real-time gas flow Δb31 and a rear-end real-time gas flow Δb32 of the third purifying device and each preset gas flow difference value after the first purifying device, the second purifying device and the third purifying device are simultaneously turned on:
When delta B31-delta B32 is less than or equal to z1, selecting the first preset air inlet pipeline gas flow L1 as the gas flow in the air inlet pipeline;
when z1 is less than delta B31-delta B32 and is less than or equal to z2, selecting the second preset air inlet pipeline gas flow L2 as the gas flow in the air inlet pipeline;
when z2 is less than delta B31-delta B32 and is less than or equal to z3, selecting the third preset air inlet pipeline gas flow L3 as the gas flow in the air inlet pipeline;
When z3 is less than delta B31-delta B32 and is less than or equal to z4, selecting the fourth preset air inlet pipeline gas flow L4 as the gas flow in the air inlet pipeline;
When the i-th preset air inlet pipeline gas flow Li is selected as the air inlet pipeline gas flow Li, i=1, 2,3,4, and the opening degree of the electric regulating valve is regulated by the control module, so that the air inlet pipeline gas flow Li is the i-th preset air inlet pipeline gas flow Li.
5. The purification and deodorization system for environmental protection exhaust gas treatment according to claim 4, wherein,
The processing module is also used for setting a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3 and a fourth preset hydrogen sulfide concentration C4, wherein C1 is more than C2 and less than C3 and less than C4; the processing module is further used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, wherein 1 is more than y1, y2 is more than y3 is more than y4 is more than 0.8;
the processing module is further configured to obtain a real-time hydrogen sulfide concentration Δc in the air intake pipe in real time, and select a correction coefficient according to a relationship between the real-time hydrogen sulfide concentration Δc and each preset hydrogen sulfide concentration, so as to correct the i-th preset air intake pipe gas flow Li in the air intake pipe:
When deltaC is less than or equal to C1, the first preset correction coefficient y1 is selected to correct the i preset air inlet pipeline gas flow Li, and the corrected gas flow Li x y1 is used as the gas flow in the air inlet pipeline;
When C1 is more than deltaC and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
When C2 is less than delta C and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the i-th preset air inlet pipeline gas flow Li, and taking the corrected gas flow Li x y3 as the gas flow in the air inlet pipeline;
when C3 is smaller than delta C and smaller than or equal to C4, the fourth preset correction coefficient y4 is selected to correct the gas flow Li of the ith preset gas inlet pipeline, and the corrected gas flow Li x y4 is used as the gas flow in the gas inlet pipeline.
6. The purification and deodorization system for environmental protection exhaust gas treatment according to claim 5, wherein,
The processing module is also used for setting a first preset ammonia concentration D1, a second preset ammonia concentration D2, a third preset ammonia concentration D3 and a fourth preset ammonia concentration D4, wherein D1 is more than D2 and less than D3 and less than D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, wherein 1 is more than x1 and more than x2 is more than x3 and more than x4 is more than 0.8;
The processing module is further configured to, after selecting the i-th preset correction coefficient yi to correct the i-th preset intake duct gas flow Li as the gas flow in the intake duct, i=1, 2,3,4, obtain real-time ammonia concentration Δd in the intake duct in real time, and select a compensation coefficient according to a relationship between the real-time ammonia concentration Δd and each preset ammonia concentration, so as to compensate the corrected intake duct gas flow Li in the intake duct:
when Δd is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x1 as the gas flow in the gas inlet pipeline;
When D1 is smaller than delta D and is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x2 as the gas flow in the gas inlet pipeline;
When D2 is smaller than delta D and is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x3 as the gas flow in the gas inlet pipeline;
When D3 is smaller than Δd and smaller than or equal to D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow Li x yi of the gas inlet pipeline, and taking the compensated gas flow Li x yi x4 as the gas flow in the gas inlet pipeline.
7. The purification and deodorization system for environmental protection exhaust gas treatment according to any one of claims 1 to 6, wherein the first purification device, the second purification device and the third purification device are all biological filter beds.
8. A method for purifying and deodorizing an environmental-friendly exhaust gas treatment, characterized in that the method is carried out by using the purifying and deodorizing system for environmental-friendly exhaust gas treatment as set forth in any one of claims 1 to 7, comprising the steps of:
acquiring hydrogen sulfide concentration information, ammonia concentration information and gas flow information in an air inlet pipeline;
Acquiring gas flow information of an air inlet end and an air outlet end of the purification device;
And controlling the opening states of the purifying devices according to the gas flow information in the gas inlet pipeline, and adjusting the opening states of the purifying devices in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purifying devices in the opening states.
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