CN117065557B - Advanced biological deodorization equipment for sewage treatment and deodorization method thereof - Google Patents
Advanced biological deodorization equipment for sewage treatment and deodorization method thereof Download PDFInfo
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- CN117065557B CN117065557B CN202311275985.4A CN202311275985A CN117065557B CN 117065557 B CN117065557 B CN 117065557B CN 202311275985 A CN202311275985 A CN 202311275985A CN 117065557 B CN117065557 B CN 117065557B
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- 238000004332 deodorization Methods 0.000 title claims abstract description 124
- 239000010865 sewage Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 239000000945 filler Substances 0.000 claims abstract description 72
- 239000007921 spray Substances 0.000 claims abstract description 56
- 238000005406 washing Methods 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 40
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 230000033228 biological regulation Effects 0.000 claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 14
- 230000001502 supplementing effect Effects 0.000 claims abstract description 5
- 230000001877 deodorizing effect Effects 0.000 claims description 29
- 230000000813 microbial effect Effects 0.000 claims description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 19
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 11
- 238000004378 air conditioning Methods 0.000 claims description 9
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- 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
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (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 relates to the technical field of environmental protection waste water and waste gas treatment, and discloses advanced biological deodorization equipment for sewage treatment and a deodorization method thereof. The deep biological deodorization apparatus includes 2 biological deodorization units arranged in upper and lower layers; the inside of the biological deodorization unit is of a three-layer structure, which is respectively a gas distribution water storage layer, a biological filler layer and a spraying exhaust layer; the biological filler layer and the spray exhaust layer are respectively separated from the biological washing device and the biological filtering device by a baffle plate; the spraying exhaust layer of the biological washing device is communicated with an air inlet pipeline; the spray exhaust layer of the biological filter device is communicated with an air outlet pipeline; the spray exhaust layer is provided with a washing spray system and a biological regulation spray system; the washing spray system is communicated with the biological water circulation system through a pipeline; the biological regulation spraying system is communicated with the biological water supplementing system through a pipeline. The double-layer biological device is designed in parallel and can independently operate, so that the concentration reaches the standard, and meanwhile, the energy-saving and consumption-reducing functions are provided for the operators of sewage treatment plants.
Description
Technical Field
The invention relates to the technical field of environmental protection waste water and waste gas treatment, in particular to deep biological deodorization equipment for sewage treatment and a deodorization method thereof.
Background
Sewage treatment stations, farms and garbage treatment plants all have the problem of malodor pollution, the odor of the sewage treatment stations, farms and garbage treatment plants has strong diffusivity, and the sewage contains various pollutants. The main reason for the foul smell of sewage is that organic compounds are continuously fermented to cause foul smell. Organic matter is the main contaminant of sewage, for example: starch, protein, saccharide, mineral oil, etc. The urban domestic sewage has a lot of odor components, such as VOC malodorous substances of hydrogen sulfide, methyl mercaptan, ammonia and the like. Odor components of sewage treatment plants are classified into three categories: (1) sulfur-containing compounds such as H2S, mercaptans, thioethers; (2) Nitrogen-containing compounds such as ammonia, amines, amides, indoles, and the like; (3) Oxygen-containing organics such as alcohols, phenols, aldehydes, ketones, organic acids, and the like.
The malodorous gas may be treated by physical treatment, biological treatment, chemical treatment, or the like. Wherein, (1) physical treatment method: the common adsorption method such as active nitrogen, zeolite, diatomite, fly ash and the like, wherein the activated carbon has better adsorption effect, and the activated carbon has huge specific surface area which can reach 100m generally 2 And/g, has better removal effect on hydrogen sulfide in malodorous gas. (2) biological treatment: similarly to sewage treatment, the malodorous gas is oxidized and decomposed by the metabolism of microorganisms to be converted into odorless and harmless gas, and meanwhile, the microbial cells are synthesized. (3) chemical treatment: according to the acidity and alkalinity of the malodorous gas components, a chemical neutralization method is adopted for removing the malodorous gas components. Neutralizing acid gas such as hydrogen sulfide with lime, caustic soda, etc.; for alkaline gas such as ammonia gas, hydrochloric acid, sulfuric acid, nitric acid, etc. are used.
The existing biological purification process converts malodorous substances through the physiological metabolism of microorganisms to achieve the aim of deodorization, and the existing sewage station deodorization mostly adopts a biological purification method. The biological purification method is that the collected odor is firstly humidified and then passes through a biological filter layer which is full of microorganisms and wet and porous, and the characteristics of small size, large surface area, strong adsorptivity and various metabolic types of microorganism cells and the adsorption, absorption and degradation functions of microorganism cells on the malodorous substances are utilized to decompose the malodorous substances into CO after the malodorous substances are adsorbed 2 And other inorganic substances.
The prior art discloses a novel double-deck biological filter deodorization device, including the deodorization case, the inside upper and lower both sides of deodorization case all are provided with the distribution chamber, the bottom distribution chamber diapire fixedly connected with multiunit evenly distributed's support column, the equal fixedly connected with supporting beam in well lower part and top between the support column, the equal fixedly connected with packing layer in supporting beam top, the equal fixedly connected with of distribution chamber roof sprays the pipeline, the equal fixedly connected with of spray pipeline is at the branch pipe output that intakes, the equal fixedly connected with of branch pipe input is at the inlet tube output that intakes. The prior art discloses a novel automatic biological deodorization filtering pond processing system, which comprises a box body, isolate alkaline pool, biological pond through the baffle in the box, be equipped with the gas distribution pipeline in the biological pond the outer parcel of gas distribution pipeline has the grid to support, grid support top carries on and has the gas distribution grid, the grid supports and is fixed in through the filler support in the box. The prior art discloses a biological deodorization spray column, including tower body, deodorization mechanism, mechanism and splashproof mechanism of admitting air, two manholes have been seted up to one side in the tower body, splashproof mechanism sets up on the manhole, the mechanism of admitting air sets up the bottom at the tower body, the top of tower body is provided with the gas vent, the inner wall fixedly connected with supporting shoe of tower body, bottom one side of tower body is provided with the sight glass, deodorization mechanism includes first perforated plate, spherical cavity filler, circulating water tank, water pipe and shower head.
The biological purification method in the prior art has the defects of larger occupied area, uneven air flow distribution and low utilization rate of biological filler; the biological filler is porous filler commonly used, the microorganism growth and deodorization effect are poor, the deodorization efficiency is difficult to improve, and the automatic control of a liquid circulation system is insufficient. In particular, when the air quantity required to be treated for biological deodorization is large, the conventional single-layer biological deodorization equipment occupies a large area, and the area of a sewage treatment plant is often very tense.
Disclosure of Invention
The invention provides a deep biological deodorization device for sewage treatment, which overcomes the technical defects of the prior art.
Another object of the present invention is to provide a deodorizing method for a deep biological deodorizing apparatus for sewage treatment.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a deep biological deodorization apparatus for sewage treatment, comprising 2 biological deodorization units arranged on upper and lower layers; the biological deodorization unit is internally provided with a three-layer structure, namely a gas distribution water storage layer positioned at the bottom layer, a biological filler layer positioned at the middle layer and a spraying exhaust layer positioned at the top layer; the biological filler layer and the spray exhaust layer are separated by a baffle plate to form a biological washing device for humidifying, washing and filtering the odor and a biological filtering device for performing microbial oxidative decomposition and deodorization on the odor; the spraying exhaust layer of the biological washing device is communicated with an air inlet pipeline; the spray exhaust layer of the biological filter device is communicated with an air outlet pipeline; the spraying exhaust layer is provided with a washing spraying system and a biological regulation spraying system; the washing spray system is communicated with the biological water circulation system through a pipeline; the biological regulation spraying system is communicated with the biological water supplementing system through a pipeline.
Further, the air inlet pipeline comprises an air inlet main pipe, and an upper layer air inlet main pipe and a lower layer air inlet main pipe which are separated from the air inlet main pipe; the air inlet main pipe is provided with an air inlet main cut-off valve;
the upper air inlet header pipe and a top plate air inlet of the first biological deodorization unit positioned on the upper layer are communicated to a spraying exhaust layer of the biological washing device;
the lower air inlet header pipe is communicated with a side plate air inlet of the first biological deodorization unit to be arranged in the biological washing device, and the air guide box is communicated with an air inlet at the top plate of the biological washing device in the second biological deodorization unit at the lower layer; and the upper air inlet main pipe and the lower air inlet main pipe are respectively provided with an air inlet electric valve.
Further, the biological water circulation system and the biological water supplementing system comprise an integrated water storage container for storing water, returning water and filtering water, a biological circulation pump, a water inlet pipe, a water outlet pipe and a water return pipe;
the filter plate in the integrated water storage container divides the container into an original water cavity and a filter cavity;
the water return pipe is communicated with the raw water cavity of the second biological deodorization unit and the integrated water storage container and is used for recycling water of the gas distribution water storage layer in the biological deodorization unit into the integrated water storage container; the water inlet pipe is communicated with the water supply pipeline and is used for adding dry and purified water into the raw water cavity of the integrated water storage container; the raw water cavity is provided with an overflow port and an emptying port which are respectively connected with a wastewater tank through pipelines;
the filter cavity is connected to a washing spray system and/or a biological regulation spray system of each spray exhaust layer through a pipeline and at least 1 biological circulating pump, and the washing spray system and the biological regulation spray system are provided with atomizing nozzles; preferably, the filter cavity is connected with 3 biological circulating pumps through a pipeline, and the filter cavity is dual-purpose; the pipe is provided with a heating device for heating water.
Further, the raw water cavity is provided with a pH meter, a liquid level meter and a turbidity meter; the gas distribution water storage layer of the second biological deodorization unit is provided with an emptying pipeline connected with a wastewater tank.
Preferably, the water storage height of the gas distribution water storage layer of the second biological deodorization unit is 450-600 mm. The water storage height of the gas distribution water storage layer of the first biological deodorization unit is 100-150 mm.
Further, the first biological deodorization unit and the second biological deodorization unit are laminated through a partition plate, and the 2 biological deodorization units independently operate;
at least 4 first air outlet air guide pipes are arranged in the biological filtering device and the spray exhaust layer of the first biological deodorization unit in a penetrating way; the first air outlet air duct is communicated with an air outlet of the spraying exhaust layer in the second biological deodorization unit and an air outlet pipeline;
the biological filtering device and the spraying exhaust layer of the first biological deodorization unit are provided with at least 4 second air outlet air guide pipes; the second air outlet air duct is communicated with an air outlet of the spraying exhaust layer in the first biological deodorization unit and an air outlet pipeline.
Further, the top plate of the biological deodorization unit is provided with a plurality of charging holes and overhauling holes; the side of the biological deodorization unit is provided with an overflow pipe and a sewage discharge pipe.
Further, the air outlet pipeline comprises an air outlet branch pipe and an air outlet main pipe for collecting the air outlet branch pipe; the air outlet branch pipe is provided with an air exhaust electric valve and a demister; the air outlet main pipe is communicated with the deodorizing fan and is connected to the exhaust tower through an exhaust barrel; the water outlet of the demister is connected to the wastewater tank through a pipeline.
Further, a biological filler layer in the biological washing device is provided with hollow sphere filler, and the thickness of the filler is more than 1.5 meters; the biological filler layer in the biological filter device is provided with microbial filler, and the thickness of the filler is more than 1.5 meters.
Preferably, the thickness of the bio-filler layer is 1.5-2m.
Further, the microbial filler comprises the following substances in parts by weight:
further preferably, the microbial filler comprises the following substances in parts by weight:
a deodorizing method of the advanced biological deodorizing apparatus for sewage treatment, comprising the steps of:
s1, opening an air inlet main cut-off valve and an air inlet electric valve, and introducing odor into a spraying exhaust layer of a biological deodorization unit through an air inlet pipeline;
the washing spray system in the biological washing device operates, and the atomizing nozzle fully atomizes water and then mixes the water with odor so that the humidity of the odor reaches a saturated state;
s2, the odor in the saturated state passes through a biological filler layer of the biological washing device from top to bottom to remove harmful components; then, the odor after biological washing treatment is introduced into a biological filtering device through the gas distribution water storage layer;
s3, the microbial filler of the biological filler layer in the biological filter device is fully contacted with odor for reaction, and is discharged through an air outlet pipeline after deodorization.
Preferably, the air inlet temperature of the odor is 0-40 ℃;
preferably, the pH of the water is 1 to 3.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the double-layer biological device is designed in parallel, and the air inlet pipe and the air outlet pipe are respectively designed independently, so that only 1 set of biological deodorization units can be operated at the stage of low odor operation load in a factory, and the other set of biological deodorization units are standby, so that the functions of saving energy and reducing consumption are provided for operators of sewage treatment plants while the gas emission concentration is ensured to reach the standard;
in addition, the deodorizing fan can run simultaneously under the condition of full load, and can be converted into one-to-one mode under the condition that the load is only 50%, so that the stability of the deodorizing fan in the use process is ensured;
the biological deodorization units arranged on the upper layer and the lower layer ensure the uniformity of the air outlet of the equipment under the condition of large air quantity by different air inlet and air outlet pipeline air distribution designs so as to ensure the use efficiency of biological fillers. Meanwhile, the novel microbial filler is adopted, so that the growth of microorganisms is facilitated, and the deodorizing effect is remarkably improved. The ammonia gas removal rate of the invention is up to 98.6%, and the hydrogen sulfide removal rate is up to 94.5%; the odor concentration is obviously reduced by 93 percent.
Drawings
FIG. 1 is a schematic view of a deep biological deodorization apparatus for sewage treatment;
FIG. 2 is a top view of a deep biological deodorization apparatus for sewage treatment;
FIG. 3 is a partial cross-sectional view of a deep biological deodorization apparatus for sewage treatment;
fig. 4 is an internal schematic view of a deep biological deodorization apparatus for sewage treatment.
Detailed Description
For the purposes, technical solutions and advantages of the embodiments of the present application, the technical solutions of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, based on the described embodiments, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of protection of the present application.
Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Example 1
As shown in fig. 1 to 4, a deep bio-deodorization apparatus for sewage treatment includes 2 bio-deodorization units 1 arranged at upper and lower layers;
the biological deodorization unit 1 has a three-layer structure, namely a gas distribution water storage layer 11 positioned at the bottom layer, a biological filler layer 12 positioned at the middle layer and a spraying exhaust layer 13 positioned at the top layer;
the biological filler layer 12 and the spray exhaust layer 13 are respectively separated by a baffle plate 14 into a biological washing device 15 for humidifying, washing and filtering the odor and a biological filtering device 16 for performing microbial oxidative decomposition and deodorization on the odor;
the spray exhaust layer 13 of the biological washing device 15 is communicated with an air inlet pipeline; the spray exhaust layer 13 of the biological filter device 16 is communicated with an air outlet pipeline;
the spray exhaust layer 13 is provided with a washing spray system 2 and a biological regulation spray system 3; the washing spray system 2 is communicated with the biological water circulation system 21 through a pipeline; the bio-conditioning spray system 3 is in communication with a bio-water replenishment system 31 via a conduit.
The air inlet pipeline comprises an air inlet main pipe 4, an upper layer air inlet main pipe 41 and a lower layer air inlet main pipe 42 which are separated by the air inlet main pipe 4; the air inlet main pipe 4 is provided with an air inlet main cut-off valve 43;
the upper air inlet header pipe 41 and the top plate air inlet 171 of the first biological deodorization unit 17 positioned at the upper layer are communicated to the spray exhaust layer 13 of the biological washing device 15;
the lower air inlet header pipe 42 is communicated with a side plate air inlet 172 of the first biological deodorization unit 17 to be arranged in the biological washing device 15, and the air guide box 173 is communicated with an air inlet at the top plate of the biological washing device 15 in the second biological deodorization unit 18 positioned at the lower layer;
the upper air inlet main pipe 41 and the lower air inlet main pipe 42 are respectively provided with an air inlet electric valve 44.
The biological water circulation system 21 and the biological water replenishing system 31 each comprise an integrated water storage container 22 for storing water, returning water and filtering water, a biological circulation pump 23, a water inlet pipe 24, a water outlet pipe 25 and a water return pipe 26;
the filter plate 221 in the integrated water storage container 22 divides the container interior into a raw water chamber 222 and a filter chamber 223;
the water return pipe 26 is communicated with the second biological deodorization unit 18 and the raw water cavity 222 of the integrated water storage container 22, and is used for recycling water of the gas distribution water storage layer 11 in the biological deodorization unit 1 into the integrated water storage container 22; the water inlet pipe 24 is communicated with the water supply pipeline 27 and is used for adding clean water into the raw water cavity 222 of the integrated water storage container 22; the raw water cavity 222 is provided with an overflow port 223 and an emptying port 224 which are respectively connected with the wastewater tank 28 through pipelines;
the wastewater tank 28 is provided with a submersible sewage pump which is communicated to the coagulating sedimentation tank through a pipeline; the wastewater tank 28 is provided with a pH meter, a liquid level meter, a turbidity meter, and the like.
The filter chamber 223 is connected to the washing spray system 2 and the biological regulation spray system 3 of each spray exhaust layer 13 through pipelines and 3 biological circulation pumps 23, and the washing spray system 2 and the biological regulation spray system 3 are provided with atomizing nozzles 32; the filter cavity 223 is connected with 3 biological circulating pumps 23 through a pipeline, and the two functions are provided; each pipe is provided with a heating device 33 for heating the water.
The raw water cavity 222 is provided with a pH meter, a liquid level meter and a turbidity meter and is connected with a controller; the gas distribution water storage layer 11 of the second biological deodorization unit 18 is provided with an evacuation pipe 111 connected with the wastewater tank 28.
The first biological deodorization unit 17 and the second biological deodorization unit 18 are laminated through a partition plate 19, and the 2 biological deodorization units 1 independently operate;
8 first air outlet air guide pipes 181 are arranged in the biological filter device 15 of the first biological deodorization unit 18 and the spray air exhaust layer 13 in a penetrating way; the first air outlet air duct 181 is communicated with an air outlet 174 of the spraying exhaust layer 13 in the second biological deodorization unit 17 and an air outlet pipeline.
A partition plate 19 is arranged between the upper layer and the lower layer of the biological deodorization unit to separate the biological deodorization units of the upper layer and the lower layer so as to ensure that the device can independently operate; wherein, for the biological deodorization unit of the lower layer, 2 air guide boxes 173,8 first air guide pipes 181 are pre-buried in the biological deodorization unit of the upper layer and pass through the partition plate to directly communicate the air inlet pipe and the air outlet pipe of the biological deodorization unit of the lower layer with the outside.
The biological filter 15 and the spray exhaust layer 13 of the first biological deodorization unit 18 are provided with 8 second air outlet air guide pipes 182; the second air outlet duct 182 communicates with the air outlet of the spray exhaust layer 13 in the first biological deodorization unit 18 and the air outlet duct.
The top plate of the biological deodorization unit 1 is provided with a plurality of charging holes 183 and an overhaul hole 184; the biological deodorization unit 1 is provided at a side thereof with an overflow pipe 185 and a drain pipe 186.
The air outlet pipeline comprises an air outlet branch pipe 51 and an air outlet main pipe 52 for converging the air outlet branch pipes; the air outlet branch pipe 51 is provided with an air exhaust electric valve 511 and a demister 512; the air outlet main pipe 52 is communicated with the deodorizing fan 521 and is connected to the air discharging tower 523 through the air discharging barrel 522; the water outlet of the deodorizing fan 521 is connected to the wastewater tank 28 through a pipe.
The biological filler layer 12 in the biological washing device 15 is provided with hollow sphere filler, the thickness of the filler is more than 1.5 meters, and the hollow sphere filler is hollow sphere filler, active carbon and the like.
The bio-filler layer 12 in the bio-filter apparatus 16 is provided with a microbial filler having a thickness of 1.5 m or more.
The double-layer biological device is designed in parallel, and the air inlet pipe and the air outlet pipe are respectively designed independently, so that only 1 set of biological deodorization units 1 can be operated at the stage of low odor operation load in a factory, and the other set of biological deodorization units 1 are used for standby, so that the energy saving and consumption reduction functions are provided for operators of sewage treatment plants while the gas emission concentration is ensured to reach the standard;
in addition, the deodorizing fan 521 can run simultaneously under the condition of full load, and can be converted into one-to-one mode under the condition that the load is only 50%, so that the stability of the deodorizing fan 521 in the use process is ensured;
the biological deodorization units 1 arranged on the upper layer and the lower layer ensure the uniformity of the air outlet of the equipment under the condition of large air quantity by different air inlet and air outlet pipeline air distribution designs so as to ensure the use efficiency of biological fillers.
As can be seen from the horizontal elevation view of the device, the deep biological deodorization equipment has 4 air inlets, namely 2 air inlets of the first biological deodorization unit 17 and 2 air inlets of the second biological deodorization unit 18, each air inlet is provided with a separate air inlet electric valve 44, and the number of the air inlet electric valves 44 is 4;
the deep biological deodorization equipment has 16 air outlets 174, namely air outlets 174,8 of the upper-layer first biological deodorization units 17 and air outlets 174 of the second biological deodorization units 18; every 4 air outlets 174 are converged into one air outlet branch pipe 51, and a total of 4 air outlet branch pipes 51 are formed, each air outlet branch pipe 51 is independently provided with an air exhaust electric valve 511 and a demister 512, and the number of the air exhaust electric valves 511 is 4;
the exhaust electric valve 511 ensures that the device can be controlled separately in layers;
the four air outlet branch pipes 51 are respectively connected with 2 deodorizing fans 521 of the double-layer biological deodorizing equipment after air flow is summarized. When the system runs at full load, 2 deodorizing fans 521 are dual-purpose 0 standby; when the odor concentration of the sewage treatment plant is in low load, only 1 deodorizing fan 521 and 1 set of biological deodorizing units on the upper layer and the lower layer can be started, so that the independent operation of the biological deodorizing units on the upper layer and the lower layer can be realized.
Example 2
This embodiment is similar to embodiment 1 except that: in this embodiment, 4 sets of reinforced air-out systems are arranged in the spray exhaust layer 13. The reinforced air outlet system comprises an air pipe and an axial flow fan communicated with the air pipe; the outer wall of the air suction inlet of the air pipe is provided with a hydrogen sulfide online detector, an ammonia online detector, an odor concentration online detector, a temperature online sensor and a humidity online sensor; the controller 7 collects and analyzes the data of each sensor and each detector and controls the axial flow fan to work; an air outlet pipe network system is formed by a plurality of air pipes, an axial flow fan and the like.
The air duct is connected to an air outlet branch 51.
In the embodiment, the reinforced air outlet systems are respectively arranged at 4 weeks of the spraying exhaust layer 13, so that the air outlet quantity at the periphery of the spraying exhaust layer 13 is reinforced.
The advanced biological deodorization device of this embodiment is an outdoor device, and a large-scale device is built outdoors. In the perennial operation process, the biological filtering capacity around the equipment is different due to the influence of the sun-drying time and intensity in different directions and the intensity of cold air, so that the gas concentration in the spray exhaust layer 13 is different. Furthermore, it is difficult to uniformly exhaust air by 8 second air-out air-guide pipes or first air-out air-guide pipes. According to the embodiment, the reinforced air outlet system is arranged, the operation of the axial flow fan can be intelligently controlled according to the data collected by each sensor and each detector, the targeted reinforced exhaust is realized, and the problems of uneven exhaust and the like in the operation process are effectively solved.
Example 3
This embodiment is similar to embodiment 2, except that: in this embodiment, a fresh air system is provided inside the bio-filter 12 of the bio-filter 16. The fresh air system comprises an air pipe, a fan communicated with the air pipe and an air conditioning system with refrigeration and heating functions; the wall of the air pipe is provided with a plurality of through holes for ventilation. The air pipe is arranged in the middle of the biological filler layer 12, and a plurality of air pipes are communicated to form a plane ventilation network.
And the temperature sensor and the humidity sensor are arranged on the outer wall of the air pipe and are connected with the controller.
The air conditioning system is arranged on the outer wall of the biological deodorization unit 1; the air conditioning system transmits gas to the inside of the biological filler layer 12 through a fan and an air pipe; the temperature of the gas is controlled by the controller to output a control signal to the air conditioning system.
Example 4
This example is similar to example 3 in that the microbial filler used in the bio-filler layer 12 of the bio-filter apparatus 16 comprises the following materials in parts by weight:
the cultured strains in the bio-filler layer 12 include strains that have been used in deodorization engineering, among the species: more than 20 kinds of nitrifying bacteria, sulfur oxidizing bacteria, ammonia oxidizing bacteria, spore bacteria, pseudomonas and the like.
A deodorizing method for a deep biological deodorizing apparatus for sewage treatment, comprising the steps of:
s1, opening an air inlet total cut-off valve 43 and an air inlet electric valve 44, and introducing odor with the air inlet temperature of 0-40 ℃ into a biological washing device 15 through an air inlet pipeline to spray an air exhaust layer 13;
the washing spray system 13 in the biological washing device 15 operates, and the atomizing nozzle 32 fully atomizes water and then mixes the water with odor so that the humidity of the odor reaches a saturated state;
s2, the odor in the saturated state passes through the biological filler layer 12 of the biological washing device 15 from top to bottom to remove harmful components; then, the odor after biological washing treatment is led into a biological filter device 16 through the gas distribution water storage layer 11;
s3, the microbial filler of the biological filler layer 12 in the biological filter device 16 is fully contacted with odor for reaction, and is discharged through an air outlet pipeline after deodorization.
The temperature sensor and the humidity sensor in the fresh air system monitor the temperature and the humidity in the biological filler layer 12 and feed back to the air conditioning system; blowing air into the biological filler layer 12 through a fresh air system, and adjusting the temperature to 5-40 ℃; the biological filler layer 12 is sprayed by the biological regulation spraying system 3, and the humidity is regulated to be 30% -60%.
The pH of the water in the biological water circulation system 21 is kept between 1 and 3; starting a biological circulating pump 23 to convey water into the washing spray system 15; meanwhile, the water in the gas distribution water storage layer 11 in the biological deodorization unit 1 is recycled into the integrated water storage container 22 through the water return pipe;
the biological water replenishing system 31 starts the biological circulating pump 23 to convey water to the biological regulation spray system 3, and at the same time, the water in the gas distribution water storage layer 11 in the biological deodorization unit 1 is recovered into the integrated water storage container 22 through the water return pipe.
The pH meter, the liquid level meter and the turbidity meter of the raw water cavity 222 are connected with the controller; the water quality is monitored, and the operation of pumps such as the biological circulating pump 23 is controlled to drain or supplement water, so that the water quality in the filter cavity 223 is kept qualified.
4 sets of reinforced air outlet systems in the spray exhaust layer 13 monitor the gas quality in the spray exhaust layer 13 through a hydrogen sulfide on-line detector, an ammonia on-line detector, an odor concentration on-line detector, a temperature on-line sensor, a humidity on-line sensor and the like on the outer wall of an air suction inlet of an air pipe. The controller collects and analyzes the data of each sensor and each detector and controls the axial flow fan to work; an air pipe net system composed of a plurality of air pipes, an axial flow fan and the like is used for exhausting air.
As a preferred embodiment, the thickness of the bio-filler layer 12 is 1.5-2m. As a preferred embodiment, the water storage height of the air distribution water storage layer 11 of the second biological deodorization unit 18 is 450-600 mm. The water storage height of the gas distribution water storage layer 11 of the first biological deodorization unit 17 is 100-150 mm. The air inlet temperature of the odor is 30-40 ℃; the pH of the water in the biological deodorization unit 1 is maintained at 1 to 3.
Examples 5 to 6
This example is similar to example 4 in that the microbial filler used in the bio-filler layer 12 of the bio-filter apparatus 16 comprises the following materials in parts by weight:
| example 5 | Example 6 | |
| The components | Parts by weight of | Parts by weight of |
| Volcanic rock with 10-20mm | 40 | 46 |
| Volcanic rock of 30-30mm | 5 | 4 |
| Volcanic rock of 50-60mm | 7 | 6 |
| 10-20mm ceramsite | 26 | 20 |
| Dolomite sand stone | 3 | 2 |
| Shredded coconut | 12 | 20 |
| Oyster shell powder | 7 | 2 |
Comparative example 1
This comparative example is similar to example 4 in that the microbial filler used in the bio-filler layer 12 of the bio-filter apparatus 16 comprises the following materials in parts by weight:
comparative example 2
This comparative example is similar to example 4 in that the microbial filler used in the bio-filler layer 12 of the bio-filter apparatus 16 comprises the following materials in parts by weight:
| the components | Parts by weight of |
| Volcanic rock with 10-20mm | 30 |
| Volcanic rock of 30-30mm | 3 |
| Volcanic rock of 50-60mm | 12 |
| 10-20mm ceramsite | 30 |
| Dolomite sand stone | 2 |
| Shredded coconut | 17 |
| Oyster shell powder | 10 |
Comparative example 3
This comparative example is similar to example 4 in that the microbial filler used in the bio-filler layer 12 of the bio-filter apparatus 16 comprises the following materials in parts by weight:
| the components | Parts by weight of |
| Volcanic rock with 10-20mm | 60 |
| Volcanic rock of 30-30mm | 4.5 |
| Volcanic rock of 50-60mm | 6.5 |
| 10-20mm ceramsite | 20 |
| Dolomite sand stone | 2 |
| Shredded coconut | 17 |
| Oyster shell powder | 15 |
Analysis of detection results:
the wastewater used in examples 4 to 6 and comparative examples 1 to 3 was malodor not deodorized in the same sewage treatment plant, and the initial hydrogen sulfide concentration, ammonia concentration and malodor concentration in the malodor used in examples 4 to 6 and comparative examples 1 to 3 are shown in Table 1. In the deodorizing treatment of examples 4 to 6 and comparative examples 1 to 3, the hydrogen sulfide concentration, the ammonia gas concentration and the odor gas concentration in the odor gas before and after the deodorizing treatment were detected and recorded, and the lower the concentration of various pollutants was, the better the deodorizing effect was, and the experimental results are shown in Table 1.
Table 1 comparative table of deodorizing effects of different examples
From the odor concentration data in table 1, the microbial filler used in the bio-filler layer 12 of the biofilter unit 16 according to the present invention has significantly better deodorizing effect on odor than the schemes of comparative examples 1 to 3. In comparative example 1, since oyster shell powder was not used, trace elements such as copper, magnesium, potassium, phosphorus, manganese, iron, zinc, etc., and various amino acid components contained in the pearl powder layer of oyster shell could not be provided for the growth of microorganisms. Therefore, the ammonia removal rate of comparative example 1 was only 92.6%; whereas the ammonia removal rate of example 1 was as high as 98.6%, significantly higher than 5%.
The hydrogen sulfide removal rate of example 1 is as high as 94.5%; the odor concentration is obviously reduced by 93 percent.
As is apparent from comparative examples 2 and 3, the respective amounts of 10-20mm volcanic rock, 30-30mm volcanic rock, and 50-60mm volcanic rock vary, so that conditions such as packing density, ventilation and moisture retention of the microbial filler used in the bio-filler layer 12 are significantly changed, which is disadvantageous for the growth of microorganisms, thereby resulting in a direct significant decrease in deodorizing efficiency.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (7)
1. A deep biological deodorization apparatus for sewage treatment, characterized by comprising 2 biological deodorization units arranged in upper and lower layers;
the biological deodorization unit is internally provided with a three-layer structure, namely a gas distribution water storage layer positioned at the bottom layer, a biological filler layer positioned at the middle layer and a spraying exhaust layer positioned at the top layer;
the biological filler layer and the spray exhaust layer are separated by a baffle plate to form a biological washing device for humidifying, washing and filtering the odor and a biological filtering device for performing microbial oxidative decomposition and deodorization on the odor;
the spraying exhaust layer of the biological washing device is communicated with an air inlet pipeline; the spray exhaust layer of the biological filter device is communicated with an air outlet pipeline;
the spraying exhaust layer is provided with a washing spraying system and a biological regulation spraying system; the washing spray system is communicated with the biological water circulation system through a pipeline; the biological regulation spraying system is communicated with the biological water supplementing system through a pipeline;
the air inlet pipeline comprises an air inlet main pipe, an upper layer air inlet main pipe and a lower layer air inlet main pipe which are separated from the air inlet main pipe; the air inlet main pipe is provided with an air inlet main cut-off valve;
the upper air inlet header pipe and a top plate air inlet of the first biological deodorization unit positioned on the upper layer are communicated to a spraying exhaust layer of the biological washing device;
the lower air inlet header pipe is communicated with a side plate air inlet of the first biological deodorization unit to an air guide box arranged in the biological washing device, and the air guide box is communicated with an air inlet at the top plate of the biological washing device in the second biological deodorization unit at the lower layer; the upper layer air inlet main pipe and the lower layer air inlet main pipe are respectively provided with an air inlet electric valve;
the biological water circulation system and the biological water supplementing system comprise an integrated water storage container for storing water, returning water and filtering water, a biological circulation pump, a water inlet pipe, a water outlet pipe and a water return pipe;
the filter plate in the integrated water storage container divides the container into an original water cavity and a filter cavity;
the water return pipe is communicated with the raw water cavity of the second biological deodorization unit and the integrated water storage container and is used for recycling water of the gas distribution water storage layer in the biological deodorization unit into the integrated water storage container; the water inlet pipe is communicated with the water supply pipeline and is used for adding dry and purified water into the raw water cavity of the integrated water storage container; the raw water cavity is provided with an overflow port and an emptying port which are respectively connected with a wastewater tank through pipelines;
the filter cavity is connected to a washing spray system and/or a biological regulation spray system of each spray exhaust layer through a pipeline and at least 1 biological circulating pump, and the washing spray system and the biological regulation spray system are provided with atomizing nozzles; the filter cavity is connected with 3 biological circulating pumps through a pipeline, and the filter cavity is dual-purpose; the pipeline is provided with a heating device for heating water;
the first biological deodorization unit and the second biological deodorization unit are laminated through a partition board, and the 2 biological deodorization units independently operate;
at least 4 first air outlet air guide pipes are arranged in the spraying exhaust layer of the biological filtering device of the first biological deodorization unit in a penetrating way; the first air outlet air duct is communicated with an air outlet of the spraying exhaust layer in the second biological deodorization unit and an air outlet pipeline;
at least 4 second air outlet air guide pipes are arranged on the spraying exhaust layer of the biological filtering device of the first biological deodorization unit; the second air outlet air duct is communicated with an air outlet of the spraying exhaust layer in the first biological deodorization unit and an air outlet pipeline;
4 sets of reinforced air outlet systems are arranged in the spray exhaust layer; the reinforced air outlet system comprises an air pipe and an axial flow fan communicated with the air pipe; the outer wall of the air suction inlet of the air pipe is provided with a hydrogen sulfide online detector, an ammonia online detector, an odor concentration online detector, a temperature online sensor and a humidity online sensor; the controller collects and analyzes the data of each sensor and each detector and controls the axial flow fan to work; an air outlet pipe network system is formed by a plurality of air pipes and an axial flow fan; the air pipe is connected with the air outlet branch pipe;
the reinforced air outlet systems are respectively arranged at the periphery of the spray exhaust layer and used for reinforcing the air outlet quantity at the periphery of the spray exhaust layer;
a fresh air system is arranged in the biological filter device and the biological filler layer; the fresh air system comprises an air pipe, a fan communicated with the air pipe and an air conditioning system with refrigeration and heating functions; the wall of the air pipe is provided with a plurality of through holes for ventilation; the air pipes are arranged in the middle of the biological filler layer, and a plurality of air pipes are communicated to form a plane ventilation network;
the temperature sensor and the humidity sensor are arranged on the outer wall of the air pipe and are connected with the controller;
the air conditioning system is arranged on the outer wall of the biological deodorization unit; the air conditioning system conveys gas into the biological filler layer through a fan and an air pipe; the temperature of the gas is controlled by the controller to output a control signal to the air conditioning system.
2. A deep biological deodorization apparatus for sewage treatment according to claim 1, wherein,
the raw water cavity is provided with a pH meter, a liquid level meter and a turbidity meter; the gas distribution water storage layer of the second biological deodorization unit is provided with an emptying pipeline connected with a wastewater tank.
3. The deep biological deodorization apparatus for sewage treatment according to claim 2, wherein the top plate of the biological deodorization unit is provided with a plurality of charging ports and maintenance ports; the side of the biological deodorization unit is provided with an overflow pipe and a sewage discharge pipe.
4. The deep biological deodorization apparatus for sewage treatment according to claim 1, wherein the air outlet pipeline comprises an air outlet branch pipe and an air outlet header pipe converging the air outlet branch pipe; the air outlet branch pipe is provided with an air exhaust electric valve and a demister; the air outlet main pipe is communicated with the deodorizing fan and is connected to the exhaust tower through an exhaust barrel; the water outlet of the demister is connected to the wastewater tank through a pipeline.
5. A deep biological deodorization apparatus for sewage treatment according to claim 1, wherein,
the biological filler layer in the biological washing device is provided with hollow ball filler, and the thickness of the filler is more than 1.5 meters; the biological filler layer in the biological filter device is provided with microbial filler, and the thickness of the filler is more than 1.5 meters.
6. A deep biological deodorization apparatus for sewage treatment according to claim 5, wherein,
the microbial filler comprises the following substances in parts by weight:
7. a deodorizing method for a deep biological deodorizing apparatus for sewage treatment according to any one of claims 1 to 6, comprising the steps of:
s1, opening an air inlet main cut-off valve and an air inlet electric valve, and introducing odor into a spraying exhaust layer of a biological deodorization unit through an air inlet pipeline;
the washing spray system in the biological washing device operates, and the atomizing nozzle fully atomizes water and then mixes the water with odor so that the humidity of the odor reaches a saturated state;
s2, the odor in the saturated state passes through a biological filler layer of the biological washing device from top to bottom to remove harmful components; then, the odor after biological washing treatment is introduced into a biological filtering device through the gas distribution water storage layer;
s3, the microbial filler of the biological filler layer in the biological filter device is fully contacted with odor for reaction, and is discharged through an air outlet pipeline after deodorization.
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| CN219111309U (en) * | 2022-10-26 | 2023-06-02 | 扬州中润环保工程有限公司 | Biological filter deodorization equipment |
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| CN201249097Y (en) * | 2008-06-12 | 2009-06-03 | 上海市政工程设计研究总院 | Multistage and multi-section composite deodorizing device |
| CN105107371A (en) * | 2015-09-23 | 2015-12-02 | 广州市新之地环保产业有限公司 | Biological filter deodorization filler structure and mounting method thereof |
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