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CN111111425B - Multi-reaction-section combined odor treatment device and treatment method - Google Patents

Multi-reaction-section combined odor treatment device and treatment method Download PDF

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CN111111425B
CN111111425B CN202010027508.6A CN202010027508A CN111111425B CN 111111425 B CN111111425 B CN 111111425B CN 202010027508 A CN202010027508 A CN 202010027508A CN 111111425 B CN111111425 B CN 111111425B
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biological
reaction section
section
reaction
gas
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CN111111425A (en
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刘建伟
赵梦飞
岳鹏
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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    • 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
    • B01D53/75—Multi-step processes
    • 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
    • B01D53/38—Removing components of undefined structure
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/95—Specific microorganisms
    • 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)
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Abstract

The invention provides a multi-reaction-section combined odor treatment device and a treatment method, belonging to the technical field of odor purification treatment equipment.A to-be-treated odor firstly enters a cyclone reaction section, the cyclone reaction section is communicated with a biological desulphurization reaction section and a biological denitrification reaction section, and the top of the biological desulphurization reaction section is communicated with the bottom of the biological denitrification reaction section; the top of the biological nitrogen removal reaction section is communicated with the bottom of the biological carbon removal reaction section; the upper part of the biological decarbonization reaction section is communicated with the bottom of the deep purification section, and the top of the deep purification section is provided with an air outlet; the biological desulphurization reaction section and the biological nitrogen removal reaction section are both provided with spraying devices, and the spraying devices uniformly spray the cleaning solution on the corresponding biological filler. The invention has high deodorization efficiency, compact structure, low energy consumption for operation, convenient management and simple disassembly and replacement of the filler; the combination of multiple reaction sections and multiple strains can treat the malodorous gas more thoroughly, and the treatment effect is stable.

Description

Multi-reaction-section combined odor treatment device and treatment method
Technical Field
The invention relates to the technical field of odor purification treatment equipment, in particular to a multi-reaction-section combined odor treatment device and a treatment method, wherein the multi-reaction-section combined odor treatment device is convenient for replacement and maintenance of a filler and a filter tank, has no secondary pollution and has stable treatment effect.
Background
Malodorous gas generated in the sewage treatment and garbage treatment processes is dispersed in point positions, the gas composition is complex, and the dissipation concentration difference is large. The existing stink treatment method mainly comprises three major types, namely a physical method, a chemical method and a biological method, wherein the physical method comprises an adsorption method, plant liquid spraying and the like and is generally used as emergency treatment; the chemical method has complex process equipment and higher operating cost, can generate secondary pollutants, and is gradually reduced in the prior art; the biological method is a main method for treating the odor of the sewage treatment plant at present, has the advantages of convenient operation and management, low cost and no secondary pollution, and is an advanced and stable deodorization technology.
Aiming at the tail end biological treatment method of the malodorous gas, the malodorous gas biological method applying the filler has the defects that the filler is blocked, the pressure drop of the device during operation is increased, the filler has certain corrosion to the device and finally the treatment efficiency of the device on the malodorous gas is reduced under the long-term operation, especially under the high-load operation; meanwhile, the filler of the biological treatment device is integrated, and can only be integrally replaced during replacement, so that the filler is difficult to replace and maintain, and the cost is higher; in addition, malodorous gases are complex in composition, contain other malodorous components such as mercaptans, thioethers, etc., which are not negligible, although the main components are hydrogen sulfide and ammonia gas, and have a low olfactory threshold, and thus, strong odor can be generated at a low concentration; most of the strains used in the biological treatment method are single strains or malodorous gas is treated by introducing the malodorous gas into an aeration tank, and the two methods have poor effect on removing the malodorous gas with complex components.
Disclosure of Invention
The invention aims to provide a multi-reaction-section combined odor treatment device and a treatment method, which are used for solving at least one technical problem in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the invention provides a multi-reaction-section combined odor treatment device, which comprises an air inlet pipeline, a rotational flow reaction section, a biological sulfur removal reaction section, a biological nitrogen removal reaction section, a biological carbon removal reaction section and a deep purification section;
the air inlet pipeline is communicated with the rotational flow reaction section, and reaction absorption liquid is filled in the rotational flow reaction section; the upper part of the rotational flow reaction section is communicated with the biological desulphurization reaction section and the biological denitrification reaction section;
desulfurization microorganisms grow on the filler in the biological desulfurization reaction section, and the upper part of the biological desulfurization reaction section is communicated with the bottom of the biological denitrification reaction section;
denitrifying microorganisms grow on the filler in the biological nitrogen removal reaction section, and the upper part of the biological nitrogen removal reaction section is communicated with the bottom of the biological carbon removal reaction section;
fungus microorganisms grow on the filler in the biological decarbonization reaction section, and the upper part of the biological decarbonization reaction section is communicated with the bottom of the deep purification section;
activated carbon filler is filled in the deep purification section, and gas is discharged from the top of the deep purification section after being adsorbed by activated carbon.
Preferably, the biological sulfur removal reaction section, the biological nitrogen removal reaction section and the biological carbon removal reaction section are formed by sequentially detachably connecting a plurality of biological reaction boxes from top to bottom, and the plurality of biological reaction boxes are sequentially communicated;
the biological reaction tank at the lowest part of the biological sulfur removal reaction section is communicated with the rotational flow reaction section, and the biological reaction tank at the uppermost part of the sulfur removal reaction section is communicated with the biological reaction tank at the lowest part of the biological nitrogen removal reaction section through a gas conduit;
the biological reaction box at the uppermost part of the biological nitrogen removal reaction section is communicated with the biological reaction box at the lowermost part of the biological carbon removal reaction section through a gas conduit; the biological reaction box at the lowest part of the biological nitrogen removal reaction section is communicated with the rotational flow reaction section; the biological reaction box at the uppermost part of the biological carbon removal reaction section is communicated with the bottom of the deep purification section through a gas conduit; the upper portion of deep purification section have the gas outlet, the gas outlet is equipped with gas concentration sensor.
Preferably, the bottom edge of the biological reaction box is provided with a sliding chute, the top edge of the biological reaction box is provided with a sliding plate corresponding to the sliding chute, and two adjacent biological reaction boxes are connected by matching the sliding chute and the sliding plate;
the bottom of the biological reaction box is provided with a net-shaped supporting plate, the bottom of the biological reaction box is provided with a gas flow velocity sensor, and a pH value monitoring probe and a water content monitoring probe are arranged in the biological reaction box; the outer wall of the biological reaction box is provided with a handle; and the upper part of the biological reaction box is provided with a spraying device.
Preferably, the spraying device is communicated with a pH value adjusting liquid storage tank and a moisture content adjusting water storage tank through a pipeline, the pH value monitoring probe and the moisture content monitoring probe are both connected with a controller, the controller is respectively connected with a power pump of the pH value adjusting liquid storage tank and a power pump of the moisture content adjusting water storage tank, and the controller is further connected with an electromagnetic valve on the pipeline.
Preferably, a plurality of layers of spiral rotational flow flat plates are arranged in the rotational flow reaction section, gas distribution fillers are arranged among the rotational flow flat plates, and a plurality of gas distribution holes are uniformly formed in the rotational flow flat plates; the reaction absorption liquid is acetic acid-sodium acetate solution, and the pH value is 6-7; the air distribution filler is polypropylene filler and polyvinyl chloride filler.
Preferably, the biological desulphurization reaction section and the biological denitrification reaction section are provided with gas baffle plates, the denitrification reaction section and the biological decarbonization reaction section are provided with gas baffle plates, and the biological decarbonization reaction section and the deep purification section are provided with gas baffle plates.
Preferably, the filler of the biological sulfur removal reaction section is a polycarbonate hollow polyhedral ball filled in a biological reaction box, and the polycarbonate hollow polyhedral ball is filled with reticular polyurethane filter cotton;
the filler of the biological nitrogen removal reaction section is a polycarbonate hollow polyhedral sphere filled in a biological reaction box, and a polyethylene sphere core is filled in the polycarbonate hollow polyhedral sphere;
the filler of the biological carbon removal reaction section is volcanic organisms and polyurethane filler filled in a biological reaction box;
the deep purification section is horizontally provided with a movable guide cage, and the movable guide cage is filled with activated carbon filler.
Preferably, the biological reaction tank of the biological sulfur removal reaction section is inoculated with thiobacillus thiooxidans and thiobacillus ferroacidophilus in an inoculation ratio of 1: 1, concentration of 1.0X 10 respectively-7CFU/mg Filler-2.0X 10-7CFU/mg filler, pH 3.0 + -1;
nitrosomonas, nitrosococcus, nitrospirillum and nitrococcus are inoculated in a biological reaction box of the biological nitrogen removal reaction section, and the proportion is 1: 1: 1: 1, concentration of 1.0X 10 respectively-7CFU/mg, pH 7.0 + -1;
the biological reaction box of the biological carbon removal reaction section is inoculated with geotrichum candidum, aspergillus niger and saccharomyces cerevisiae,the proportion is 1: 1: 1, concentration of 5.0X 10 respectively-7CFU/mg Filler-8.0X 10-7CFU/mg filler, pH 7.0. + -. 1.
Preferably, the rotational flow reaction section, the biological desulphurization reaction section, the biological nitrogen removal reaction section, the biological carbon removal reaction section and the deep purification section are arranged in an integrated box body, and the outer wall of the integrated box body is made of glass wool heat-insulating materials.
In another aspect, the present invention provides a method for treating malodor treatment using the apparatus as described above,
the odor enters a cyclone reaction section through an air inlet pipeline, is uniformly dispersed through a plurality of layers of cyclone flat plates, and removes part of hydrophilic gas components under the action of reaction absorption liquid, wherein the gas residence time of the cyclone reaction section is 2-4 s;
entering a biological sulfur removal reaction section to remove sulfur-containing gas components of hydrogen sulfide, methyl mercaptan and ethanethiol; then the gas is gathered at the upper part of the sulfur removal reaction section and enters a biological reaction box at the bottommost part of the biological nitrogen removal reaction section through a gas guide pipe under the action of the pressure of the gas flow, and the gas retention time of the biological sulfur removal reaction section is 12-14 s;
the biological nitrogen removal reaction section removes nitrogen-containing gas components of ammonia and methylamine; then the gas is gathered at the upper part of the biological nitrogen removal reaction section, and enters a biological reaction box at the bottommost part of the biological carbon removal reaction section through a gas guide pipe under the action of the gas flow pressure, and the gas retention time of the biological nitrogen removal reaction section is 15-20 s;
the biological decarbonization reaction section removes carbon-containing hydrophobic gas components; then the gas is gathered at the upper part of the biological carbon removal reaction section and enters the bottom of the deep purification section through a gas guide pipe under the action of the gas flow pressure, and the gas retention time of the biological carbon removal reaction section is 8-10 s;
the gas is discharged from a gas outlet after being adsorbed and purified by the active carbon of the deep purification section, and the gas retention time of the deep purification section is 2-3 s.
The invention has the beneficial effects that: the deodorization device has the advantages of high deodorization efficiency, compact structure, low operation energy consumption, stable treatment effect on malodorous gas, convenient management and simple disassembly and replacement of fillers; the combination of multiple processes and multiple strains solves the problems of single gas treatment, poor treatment effect and unstable treatment effect of the conventional malodorous gas biological treatment method; the method of adopting the structure combination of the combined biological box solves the technical problems of complex operation and maintenance, difficult filler replacement and unmovable processing device of the conventional malodorous gas biological treatment method, and has wide application prospect in malodorous gas treatment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural view of a multi-stage combined odor treatment device according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a bioreactor chamber according to an embodiment of the present invention.
FIG. 3 is an internal structure diagram of a cyclone reaction section according to an embodiment of the present invention.
Wherein: 1-an air inlet duct; 2-a rotational flow reaction section; 3-biological sulphur removal reaction section; 4-biological nitrogen removal reaction section; 5-biological decarbonization reaction section; 6-deep purification section; 7-a biological reaction box; 9-a gas conduit; 10-air outlet; 11-a gas concentration sensor; 12-a chute; 13-a skateboard; 14-a mesh support plate; 15-gas flow rate sensor; 16-pH value monitoring probe; 17-water content monitoring probe; 18-a handle; 19-a spraying device; 20-cyclone flat plate; 21-air distribution filler; 22-a gas barrier plate; 23-moving the guide cage; 24-an integrated box body; 25-liquid filling port.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of this patent, it is noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "disposed" are intended to be inclusive and mean, for example, that they may be fixedly coupled or disposed, or that they may be removably coupled or disposed, or that they may be integrally coupled or disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
For the purpose of facilitating an understanding of the present invention, the present invention will be further explained by way of specific embodiments with reference to the accompanying drawings, which are not intended to limit the present invention.
It should be understood by those skilled in the art that the drawings are merely schematic representations of embodiments and that the elements shown in the drawings are not necessarily required to practice the invention.
Example 1
As shown in fig. 1, an odor treatment device according to embodiment 1 of the present invention includes:
the air inlet pipeline 1 is communicated with the cyclone reaction section 2, a plurality of layers of cyclone plates 20 are arranged in the cyclone reaction section 2, the upper part of the cyclone reaction section 2 is communicated with the biological desulphurization reaction section 3 and the biological nitrogen removal reaction section 4, and the upper part of the biological sulphur removal reaction section 3 is communicated with the bottom of the biological nitrogen removal reaction section 4; the upper part of the biological nitrogen removal reaction section 4 is communicated with the bottom of the biological carbon removal reaction section 5;
the upper part of the biological decarbonization reaction section 5 is communicated with the bottom of the deep purification section 6, and the top of the deep purification section 6 is provided with an air outlet 10;
the biological desulphurization reaction section 3 and the biological nitrogen removal reaction section 4 are both internally provided with a spraying device 19, the spraying device 19 provides spraying liquid for a biological box of the biological desulphurization reaction section 3, the spraying liquid is pH value regulating liquid or water, a pH value monitoring probe 16 and a water content monitoring probe 17 which are arranged in the biological box detect the pH value and the water content in the biological box in real time, when the pH value in the biological box does not accord with the preset value in the controller, the controller controls a power pump of the pH value regulating liquid storage box to convey the pH value regulating liquid for the spraying device, the pH value regulating liquid is sprayed in the biological box, and the pH value in the biological box is regulated. When the water content in the biological box does not accord with the preset value in the controller, the controller controls the power pump of the water storage tank to convey water for the spraying device, the water is sprayed in the biological box, and the water content in the biological box is adjusted. Biological sulphur removal reaction section 3 biological nitrogen removal reaction section 4 and biological carbon removal reaction section 5 can dismantle the connection component from top to bottom by a plurality of biological reaction boxes 8 in proper order, a plurality of biological reaction boxes 8 communicate in proper order.
The biological desulphurization reaction section 3, the biological nitrogen removal reaction section 4 and the biological carbon removal reaction section 5 can change the number of the combined biological reaction boxes according to the air input of the malodorous gas to be treated.
The biological reaction box 7 at the lowest part of the biological sulfur removal reaction section 3 is communicated with the rotational flow reaction section 2, and the biological reaction box 7 at the uppermost part of the biological sulfur removal reaction section 3 is communicated with the biological reaction box 8 at the lowest part of the biological nitrogen removal reaction section 4 through a gas conduit 9;
the biological reaction box 7 at the uppermost part of the biological nitrogen removal reaction section 4 is communicated with the biological reaction box 7 at the lowermost part of the biological carbon removal reaction section 5 through a gas conduit 9; the biological reaction box 7 at the lowest part of the nitrogen removal reaction section 4 is communicated with the rotational flow reaction section 2;
the biological reaction box 7 at the uppermost part of the biological carbon-removing reaction section 5 is communicated with the bottom of the deep purification section 6 through a gas conduit 9.
As shown in fig. 2, each bio-tank is a simple detachable combined bio-tank, which can be easily detached, a sliding groove 12 is arranged at the bottom edge of the bio-reaction tank 7, a sliding plate 13 corresponding to the sliding groove 12 is arranged at the top edge of the bio-reaction tank 7, and two adjacent bio-reaction tanks 7 are connected by the matching of the sliding groove 12 and the sliding plate 13.
The bottom of the biological reaction box 7 is a net-shaped support plate 14, when the net-shaped support plate 14 is provided with a gas flow velocity sensor 15 which detects that the pressure loss of gas flowing through the biological box is too large, the biological box can be judged to be blocked by the filler, and the biological box can be independently disassembled and the blocked filler inside the biological box can be replaced.
The outer wall of the biological reaction box 8 is provided with a handle 18, which is convenient for the disassembly of the biological reaction box.
When the pH value monitoring probe 16 detects that the pH value of the biological desulfurization reaction section is less than 2 or more than 4, the device is not suitable for the growth of sulfur bacteria, a controller connected with the pH value monitoring probe can automatically control the opening or closing of a solenoid valve of a spraying device of the biological reaction box 8, and a pH value regulating solution is sprayed on the biological filler to regulate the pH value to a preset pH value; when the moisture content monitoring probe 17 monitors that the moisture content is lower, a controller connected with the moisture content monitoring probe can automatically control the electromagnetic valve of the spraying device of the biological reaction box 8 to be opened or closed, water is sprayed on the biological filler to be humidified to a preset moisture content value, and the pH value is prior if conflicts exist during the adjustment of the pH value and the humidity parameter.
When the pH value monitoring probe 16 monitors that the pH value of the biological nitrogen removal reaction section is less than 6 or more than 8, the device is not suitable for growth of nitrobacteria and denitrifying bacteria, the controller connected with the pH value monitoring probe can automatically control the power pump to uniformly spray pH value regulating liquid on the biological filler through the spraying device to regulate the pH value, when the moisture content monitoring probe 17 monitors that the moisture content is lower, the controller connected with the moisture content monitoring probe can automatically control the water pump to uniformly spray water on the biological filler through the spraying device to humidify, and when the pH value and the humidity parameter are regulated, the pH value is preferred if the pH value is in conflict.
Biological sulphur removal reaction section 3 with be equipped with gaseous baffler 22 between biological nitrogen removal reaction section 4, biological nitrogen removal reaction section 4 with be equipped with gaseous baffler 22 between biological carbon removal reaction section 4, biological carbon removal reaction section 5 with be equipped with gaseous group baffle 22 between the deep purification section 6.
A gas baffle plate 22 is arranged between the biological sulfur removal reaction section 3 and the nitrogen removal reaction section 4 and extends below the liquid level of the rotational flow reaction section, so that the gas entering the rotational flow reaction section from the gas distribution pipeline is prevented from directly entering the bottommost biological reaction box of the nitrogen removal reaction section, and the halfway odor treatment is avoided.
Polycarbonate hollow polyhedral balls are filled in a biological reaction box 7 of the biological desulphurization reaction section 3, and reticular polyurethane filter cotton filler is arranged in the hollow polyhedral balls; a biological reaction box 7 of the biological nitrogen removal reaction section 4 is filled with polycarbonate hollow polyhedral spheres, and polyethylene pellet fillers are arranged in the hollow polyhedral spheres;
the biological reaction box 7 of the biological carbon removal reaction section 5 is internally provided with fillers comprising volcanic biological fillers and polyurethane fillers.
The deep purification section 6 is filled with granular activated carbon filler, the granular activated carbon is placed in the movable guide cage, the movable guide cage 23 is arranged like a drawer type design, when the filler in the movable guide cage needs to be replaced, the movable guide cage 23 is drawn out, and the filler is replaced and then inserted into a corresponding position. The movable guide cage is made of stainless steel materials, so that activated carbon is convenient to fill and replace, the granular activated carbon (with the diameter of 6mm and the length of 10-12 mm) has the filling density of 0.40-0.55 g/cm3。
The surface of a plurality of layers of rotational flow flat plates in the rotational flow reaction section 2 is provided with through holes, the filler between the rotational flow flat plates is polypropylene and polyvinyl chloride filler, the reaction absorption liquid in the rotational flow reaction section is acetic acid-sodium acetate solution, the pH value is 7.0 +/-1, and the pH value adjusting liquid is also acetic acid-sodium acetate solution. The side wall of the rotational flow reaction section 2 is also provided with a liquid adding port 25, and reaction absorption liquid is added through the liquid adding port 25. The volume of the reaction absorption liquid does not exceed the height of the gas inlet pipeline, small holes formed in the surfaces of the multi-layer rotational flow flat plates disperse gas flow into uniform and fine micro bubbles, gas fully contacts with the reaction absorption liquid in the rotational flow reaction section, and the gas flow speed is 0.4-0.8 m/s.
The rotational flow reaction section 2, the biological desulphurization reaction section 3, the biological ammonia removal reaction section 4, the biological carbon removal reaction section 5 and the deep purification section 6 are arranged in an integrated box body 24, and the outer wall of the integrated box body 24 is made of opaque closed heat-insulating materials.
In an embodiment of the present invention, a method for gas treatment by using the apparatus described above includes the following steps:
the odor enters a cyclone reaction section through an air inlet pipeline, is uniformly dispersed through a cyclone flat plate, and removes part of hydrophilic gas components under the action of reaction absorption liquid;
then entering a biological sulfur removal reaction section to remove hydrogen sulfide and hydrophilic sulfur-containing gas components; then the gas is gathered at the upper part of the sulfur removal reaction section and enters a biological reaction box at the bottommost part of the nitrogen removal reaction section through a gas guide pipe under the action of the pressure of the gas flow;
removing ammonia gas and hydrophilic nitrogen-containing gas components in the biological nitrogen removal reaction section; then the gas is gathered at the upper part of the nitrogen removal reaction section and enters a biological reaction box at the bottommost part of the biological carbon removal reaction section through a gas guide pipe under the action of the pressure of the gas flow;
the biological decarbonization reaction section removes hydrophobic gas components; then the gas is gathered at the upper part of the biological carbon removal reaction section and enters the bottom of the deep purification section through a gas conduit under the action of the gas flow pressure;
the gas is discharged from the gas outlet after being adsorbed and purified by the deep purification section.
Wherein, the fungus biological reaction section has no liquid distribution, and the hypha removes malodorous gas components in the air.
Example 2
The method for treating odor provided by the embodiment 2 of the invention comprises the following steps:
the malodorous gas is collected by the gas collecting device and can be sent to the air inlet pipeline of the device by a fan, and the malodorous gas is dispersed and wetted at the flat cyclone plate of the cyclone reaction section and enters the biological desulphurization reaction section (the reaction section comprises two biological reaction boxes which are sequentially communicated from top to bottom).
In the biological sulfur removal reaction section, hydrogen sulfide and other hydrophilic sulfur-containing malodorous gases are removed; then the gas is gathered in a gas gathering area (the space between the top of the integrated box body and the biological reaction box) at the upper part of the biological reaction box and enters a biological denitrification reaction section (namely a denitrification reaction section, comprising two biological reaction boxes which are sequentially communicated from top to bottom) through a gas conduit under the action of the pressure of the gas flow.
In the biological nitrogen removal reaction section, ammonia gas and other hydrophilic nitrogen-containing malodorous gas are removed; and then, after the gas is gathered in a gas gathering area at the upper part of the biological reaction box, the gas is redispersed through a gas guide pipe and enters a fungus biological reaction section (namely a biological carbon removal reaction section which comprises three biological reaction boxes which are sequentially communicated from top to bottom).
In the biological decarbonization reaction section, hydrophobic malodorous gas is removed; and then the gas is converged in a gas collecting area at the upper part of the biological reaction box, the gas enters the bottom of the deep purification section through a gas flow conduit, malodorous gas which is not removed by the biological reaction section in the deep purification section is adsorbed by granular activated carbon, and then the purified gas leaves the device.
The water sprayed by the spraying device or entering the upper part of the biological denitrification reaction section passes through the gas-liquid opposite flushing layer from top to bottom downwards to wet the microbial membrane on the filler, and simultaneously can provide a carbon source for the biochemical reaction section, and the hydrophilic foul gas absorbed by the pH value regulating solution (acetic acid-sodium acetate solution) is removed by the microbes.
The rotational flow reaction section is mainly used for absorbing malodorous gas with good hydrophilicity and high solubility in water, wetting the gas, enhancing the removal effect of the biological denitrification reaction section on the malodorous gas, and weakening the phenomena of filler drying and the like caused by the passing of air flow. The rotational flow reaction liquid used here is acetic acid-sodium acetate solution, and the pH value is between 7.0 plus or minus 1; the volume of liquid in the cyclone reaction section is not more than that of the gas inlet, round holes with the diameter of 10mm are formed in the multi-layer cyclone flat plates, gas flow is dispersed into uniform and fine bubbles, the gas is fully contacted with reaction absorption liquid, and the flow rate of the gas is not more than 25L/s.
The malodorous gas absorbs a part of gas through the rotational flow reaction section, and the rest gas is wetted by the reaction absorption liquid and enters the biological reaction section, so that the drying condition of the microbial filler is reduced by wetting, the growth condition of the microbes is improved, and the treatment effect is enhanced.
The biological desulphurization reaction section, the biological denitrogenation reaction section and the biological decarbonization reaction section have the volume ratio of 1: 1: 1.5, but the volume ratio can be adjusted according to the gas composition and the air intake quantity; the volume of the cyclone reaction section and the volume of the deep purification section can be determined according to the situation.
In the biological sulfur removal reaction section, airflow uniformly enters the biological reaction box from the bottom, so that each airflow uniformly flows upwards in the biological reaction box; meanwhile, the spraying device provides spraying liquid from the uniform liquid distribution to the biological desulphurization reaction section, the spraying liquid slowly passes through a filler from the upper part of the reaction section downwards and is in a cross-flow opposite-flushing form with air flow, the liquid is acidic liquid, the component of the liquid is acetic acid-sodium acetate solution, the pH value of the reaction section is maintained at 3.0 +/-1, the pH value and the water content of the reaction section are detected by a pH monitoring probe and a water content monitoring probe in real time, the spraying liquid is automatically controlled by a controller through an electromagnetic valve of the spraying device, so that the pH value and the water content are controlled within preset values, and the pH value is preferred if conflict exists during the regulation of the pH value and the humidity parameters.
In the biological nitrogen removal reaction section, airflow uniformly enters the biological reaction box from the bottom, so that the airflow uniformly flows upwards in the biological reaction box; meanwhile, a water pump uniformly distributes reaction absorption liquid of the rotational flow reaction section to a biological nitrogen removal reaction section through a spraying device, the reaction absorption liquid passes through a filler from the upper part of the reaction section downwards and slowly, the filler and the air flow form a cross flow opposite flushing state, the liquid is weakly acidic liquid, the component of the liquid is acetic acid-sodium acetate solution, the pH value of the reaction section is maintained at 7.0 +/-1, the pH value and the water content of the reaction section are detected by a pH monitoring probe and a water content monitoring probe in real time, the liquid is sprayed by a solenoid valve of the spraying device through automatic control of a controller, so that the pH value and the water content are controlled within preset values, and the pH value is preferred if conflict exists during the adjustment of the pH value and the humidity parameter.
The dimensions of each bio-box are the same, and the ratio of the length, width and height of the bio-box is 1: 1: 1.5, flanges are arranged at the joints of the biological boxes to enhance the sealing property.
The microorganisms inoculated in the biological reaction box of the sulfur removal reaction section are Thiobacillus thiooxidans (Thiobacillus thiooxidans) and iron protoxiella acidophilus (Acidithiobacillus ferrooxidans), and the ratio is 1: 1, concentration of 1.0X 10 respectively-7CFU/mg filler, adjusting pH to 3.0 +/-1.
The microorganisms inoculated in the biological reaction box of the biological nitrogen removal reaction section are Nitrosomonas (Nitrosomonas), Nitrosococcus (Nitrosococcus), Nitrospira (Nitrospira) and Nitrococcus (Nitrosoccus), and the ratio is 1: 1: 1: 1, concentration of 1.0X 10 respectively-7CFU/mg, and the gas retention time is 10-20 s; the filler is a polycarbonate hollow polyhedral ball, a high-density polyethylene ball core is arranged in the filler, the diameter of the filler is 15mm, the filler is supported at the bottom of the biological box, and the filler has large pores and cannot be blocked.
The microorganisms inoculated in the biological reaction box of the biological carbon-removing reaction section are Geotrichum candidum (Geotrichum candidum), Aspergillus niger (Aspergillus niger) and Saccharomyces cerevisiae (Saccharomyces cerevisiae) in a ratio of 1: 1: 1, concentration of 5.0X 10 respectively-7CFU/mg filler, adjusting pH to about 7.0 + -1.
The deep purification section is filled with granular activated carbon, the activated carbon is placed in the movable guide cage, the movable guide cage is made of stainless steel materials, the activated carbon is convenient to fill and replace, the granular activated carbon (with the diameter of phi 6mm and the length of 10-12 mm) and the filling density of 0.40-0.55 g/cm3The replacement of the activated carbon can be determined according to the saturation condition.
In conclusion, the multi-section combined odor treatment device and method provided by the embodiment of the invention have the advantages of high deodorization efficiency, compact structure, low operation energy consumption, stable treatment effect on multi-component complex malodorous gases, convenience in management and simplicity in disassembling and replacing fillers; the combination of multiple processes and multiple strains solves the problems of poor treatment effect and unstable treatment effect of the conventional biological treatment method for treating multi-component complex malodorous gas; the method of adopting the structure combination of the combined biological box solves the technical problems of complex operation and maintenance, difficult filler replacement and unmovable processing device of the conventional malodorous gas biological treatment method, and has wide application prospect in malodorous gas treatment. The fillers of the sulfur removal reaction section and the nitrogen removal reaction section adopt three-dimensional porous fillers, airflow flows in three dimensions, is not blocked and agglomerated, the porosity is 95 percent, the lower part adopts a glass steel mesh-shaped support plate, the contact area of the fillers and the malodorous gas is increased, solid-liquid, gas-liquid and gas-solid are easier to separate, and if the angle is too large, the fillers occupy too much effective volume; the composition, particle size and number of the biological boxes of different fillers can be adjusted according to the components of the gas to be fed, so that the adaptability of the biological boxes to the gases with different components is greatly enhanced.
Those of ordinary skill in the art will understand that: the components in the device in the embodiment of the present invention may be distributed in the device in the embodiment according to the description of the embodiment, or may be correspondingly changed in one or more devices different from the embodiment. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A multi-reaction-section combined odor treatment device is characterized by comprising an air inlet pipeline (1), a rotational flow reaction section (2), a biological desulphurization reaction section (3), a biological nitrogen removal reaction section (4), a biological carbon removal reaction section (5) and a deep purification section (6); the biological sulfur removal reaction section (3), the biological nitrogen removal reaction section (4), the biological carbon removal reaction section (5) and the deep purification section (6) are sequentially arranged in parallel;
the air inlet pipeline (1) is communicated with the rotational flow reaction section (2), and reaction absorption liquid is filled in the rotational flow reaction section; the upper part of the rotational flow reaction section (2) is communicated with the biological sulfur removal reaction section (3) and the biological nitrogen removal reaction section (4);
desulfurization microorganisms grow on the filler in the biological desulfurization reaction section (3), and the upper part of the biological desulfurization reaction section (3) is communicated with the bottom of the biological denitrification reaction section (4);
denitrification microorganisms grow on the filler in the biological nitrogen removal reaction section (4), and the upper part of the biological nitrogen removal reaction section (4) is communicated with the bottom of the biological carbon removal reaction section (5);
fungus microorganisms grow on the filler in the biological decarbonization reaction section (5), and the upper part of the biological decarbonization reaction section (5) is communicated with the bottom of the deep purification section (6);
activated carbon filler is filled in the deep purification section (6), and gas is exhausted from the top of the deep purification section (6) after being adsorbed by activated carbon;
the biological sulfur removal reaction section (3), the biological nitrogen removal reaction section (4) and the biological carbon removal reaction section (5) are formed by sequentially detachably connecting a plurality of biological reaction boxes (7) from top to bottom, and the biological reaction boxes (7) are sequentially communicated;
the biological reaction box (7) at the lowest part of the biological sulfur removal reaction section (3) is communicated with the rotational flow reaction section (2), and the biological reaction box (7) at the uppermost part of the sulfur removal reaction section (3) is communicated with the biological reaction box (7) at the lowest part of the biological nitrogen removal reaction section (4) through a gas conduit (9);
the biological reaction box (7) at the uppermost part of the biological nitrogen removal reaction section (4) is communicated with the biological reaction box (7) at the lowermost part of the biological carbon removal reaction section (5) through a gas conduit (9); the biological reaction box (7) at the lowest part of the biological nitrogen removal reaction section (4) is communicated with the rotational flow reaction section (2); the biological reaction box (7) at the uppermost part of the biological decarbonization reaction section (5) is communicated with the bottom of the deep purification section (6) through a gas conduit (9); the upper part of the deep purification section (6) is provided with a gas outlet (10), and the gas outlet (10) is provided with a gas concentration sensor (11);
a plurality of layers of spiral rotational flow flat plates (20) are arranged in the rotational flow reaction section, gas distribution fillers (21) are arranged between the rotational flow flat plates (20), and a plurality of gas distribution holes are uniformly formed in the rotational flow flat plates (20); the reaction absorption liquid is acetic acid-sodium acetate solution, and the pH value is 6-7; the air distribution filler (21) is a polypropylene filler and a polyvinyl chloride filler.
2. The multi-reaction-section combined odor treatment device according to claim 1, wherein: the bottom edge of each biological reaction box (7) is provided with a sliding chute (12), the top edge of each biological reaction box (7) is provided with a sliding plate (13) corresponding to the sliding chute (12), and two adjacent biological reaction boxes (7) are connected with the sliding plates (13) through the sliding chutes (12) in a matching manner;
the bottom of the biological reaction box (7) is provided with a net-shaped supporting plate (14), the bottom of the biological reaction box (7) is provided with a gas flow velocity sensor (15), and a pH value monitoring probe (16) and a water content monitoring probe (17) are arranged in the biological reaction box (7); a handle (18) is arranged on the outer wall of the biological reaction box (7); the upper part of the biological reaction box (7) is provided with a spraying device (19).
3. The multi-reaction-section combined odor treatment device according to claim 2, wherein:
spray set (19) have pH value to adjust the liquid reserve tank and moisture content through the pipeline intercommunication and adjust the storage water tank, pH value monitor (16) with moisture content monitor (17) all are connected with the controller, the power pump that the liquid reserve tank was adjusted to pH value and the power pump that the storage water tank was adjusted to the moisture content are connected respectively to the controller, the controller still connects solenoid valve on the pipeline.
4. The multi-reaction-section combined odor treatment device according to claim 1, wherein: biological sulphur removal reaction section (3) with be equipped with gaseous baffler (22) between biological nitrogen removal reaction section (4), nitrogen removal reaction section (4) with be equipped with gaseous baffler (22) between biological carbon removal reaction section (5), biological carbon removal reaction section (5) with be equipped with gaseous baffler (22) between deep purification section (6).
5. The multi-reaction-section combined odor treatment device according to claim 1, wherein:
the filler of the biological sulfur removal reaction section (3) is a polycarbonate hollow polyhedral ball filled in a biological reaction box (7), and reticular polyurethane filter cotton is filled in the polycarbonate hollow polyhedral ball;
the filler of the biological nitrogen removal reaction section (4) is a polycarbonate hollow polyhedral sphere filled in a biological reaction box (7), and a polyethylene sphere core is filled in the polycarbonate hollow polyhedral sphere;
the filler of the biological carbon removal reaction section (5) is volcanic biological and polyurethane filler filled in a biological reaction box (7);
the deep purification section (6) is horizontally provided with a movable guide cage (23), and the movable guide cage (23) is filled with activated carbon filler.
6. The multi-reaction-section combined odor treatment device according to claim 5, wherein:
the biological reaction box (7) of the biological sulfur removal reaction section (3) is inoculated with thiobacillus thiooxidans and thiobacillus ferroacidophilus in an inoculation ratio of 1: 1, concentration of 1.0X 10 respectively-7CFU/mg Filler-2.0X 10-7CFU/mg filler, pH 3.0 + -1;
nitrosomonas, nitrosococcus, nitrospirillum and nitrococcus are inoculated in a biological reaction box (7) of the biological nitrogen removal reaction section (4) in a ratio of 1: 1: 1: 1, concentration of 1.0X 10 respectively-7CFU/mg, pH 7.0 + -1;
geotrichum candidum, aspergillus niger and saccharomyces cerevisiae are inoculated in a biological reaction box (7) of the biological decarbonization reaction section (5) in a ratio of 1: 1: 1, concentration of 5.0X 10 respectively-7CFU/mg Filler-8.0X 10-7CFU/mg filler, pH 7.0. + -. 1.
7. The multi-reaction-section combined odor treatment device according to any one of claims 1 to 6, wherein the cyclone reaction section (2), the biological desulphurization reaction section (3), the biological nitrogen removal reaction section (4), the biological carbon removal reaction section (5) and the deep purification section (6) are disposed in an integrated box body (24), and the outer wall of the integrated box body (24) is made of glass wool heat insulation material.
8. A method for odor treatment using the apparatus according to any one of claims 1 to 7, characterized by:
odor enters a cyclone reaction section (2) through an air inlet pipeline (1), is uniformly dispersed through a multilayer cyclone flat plate (20), and removes part of hydrophilic gas components under the action of reaction absorption liquid, wherein the gas retention time of the cyclone reaction section (2) is 2-4 s;
entering a biological sulfur removal reaction section (3) to remove sulfur-containing gas components of hydrogen sulfide, methyl mercaptan and ethanethiol; then the gas is converged at the upper part of the sulfur removal reaction section (3), and enters a biological reaction box at the bottommost part of the biological nitrogen removal reaction section (4) through a gas conduit (9) under the action of gas flow pressure, and the gas residence time of the biological sulfur removal reaction section is 12-14 s;
the biological nitrogen removal reaction section (4) removes nitrogen-containing gas components of ammonia and methylamine; then the gas is converged at the upper part of the biological nitrogen removal reaction section (4), and enters a biological reaction box at the bottommost part of the biological carbon removal reaction section (5) through a gas guide pipe (9) under the action of gas flow pressure, and the gas retention time of the biological nitrogen removal reaction section (4) is 15-20 s;
the biological decarbonization reaction section (5) removes carbon-containing hydrophobic gas components; then the gas is converged at the upper part of the biological carbon removal reaction section (5), and enters the bottom of the deep purification section (6) through a gas conduit (9) under the action of gas flow pressure, and the gas retention time of the biological carbon removal reaction section (5) is 8-10 s;
the gas is discharged from a gas outlet (10) after being adsorbed and purified by the active carbon of the deep purification section (6), and the gas retention time of the deep purification section (6) is 2-3 s.
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