CN114620904B - Spiral type phagostimulant bed sewage deep purification device - Google Patents
Spiral type phagostimulant bed sewage deep purification device Download PDFInfo
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- CN114620904B CN114620904B CN202210371046.9A CN202210371046A CN114620904B CN 114620904 B CN114620904 B CN 114620904B CN 202210371046 A CN202210371046 A CN 202210371046A CN 114620904 B CN114620904 B CN 114620904B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
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- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/02—Photobioreactors
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/22—Transparent or translucent parts
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M31/00—Means for providing, directing, scattering or concentrating light
- C12M31/02—Means for providing, directing, scattering or concentrating light located outside the reactor
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/64—Fats; Fatty oils; Ester-type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
- C12P7/6436—Fatty acid esters
- C12P7/649—Biodiesel, i.e. fatty acid alkyl esters
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/00—Nature of the contaminant
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- C02F2101/105—Phosphorus compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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Abstract
The invention relates to the technical field of advanced treatment of tail water of sewage treatment plants, in particular to a spiral phagostimulant bed sewage advanced purification device, which comprises a base, wherein a support sleeve is fixedly arranged on the end surface of the base, an artificial sun lamp is arranged in the support sleeve, an algae-water separator is fixedly arranged in the center of the end surface of the support sleeve, a spiral flow tube is arranged on the outer side of the sleeve, and phagostimulant is contacted and purified and separated with sewage in the flow tube; the purified sewage after being treated is up to standard and then is directly discharged or recycled. The invention designs a spiral type phaeophaga bed sewage deep purification device, cultured phaeophaga is added into a phaeophaga bed flow pipe, and effluent of a secondary sedimentation tank is introduced into the bottom. In the daytime, if the sunlight is strong, the artificial solar lamp is not required to be turned on, the artificial solar lamp is turned on at night to provide light and heat energy, the COD (chemical oxygen demand), the nitrogen and phosphorus concentration of effluent are reduced, the sludge amount is reduced, the treatment cost is reduced, dead and recycled phaeophaga is discharged, and the method is used for manufacturing biodiesel and other measures, so that the effect of comprehensively utilizing wastes is achieved.
Description
Technical Field
The invention relates to the technical field of sewage advanced treatment of sewage treatment plants, in particular to a spiral type sewage advanced purification device for a phagostimulant bed.
Background
Most of the secondary sedimentation tank effluent of sewage treatment plants has higher nitrogen and phosphorus concentration, the current treatment method is to treat the effluent by adding chemical agents, common methods such as coagulating sedimentation, the method has higher cost, long period and large sludge quantity production, and the sludge contains a large amount of nitrogen and phosphorus components.
In summary, the invention solves the existing problems by designing a spiral type sewage deep purification device for a phagostimulant bed.
Disclosure of Invention
The invention aims to provide a spiral type sewage deep purification device for a phagostimulant bed, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a spiral type phagostimulation algae bed sewage deep purification device, includes the base, fixedly provided with support sleeve on the terminal surface of base, the center department fixedly provided with algae-water separator of support sleeve terminal surface, the inside fixedly connected with U type support of drive shaft penetration support sleeve of algae-water separator, be connected with the cleaning brush on the inside opposite lateral wall of U type support, the inside correspondence of cleaning brush is provided with micropore water-permeable net, the bottom fixedly connected with water purification discharge tube of micropore water-permeable net, the one end of water purification discharge tube runs through support sleeve to extend to support sleeve's external connection and have water purification emission control valve, one side of micropore water-permeable net is and be located support sleeve's outer wall fixed be provided with dense algae water backflow pipe, the other end of dense algae water backflow pipe is connected on the algae-bed flow tube, the one end of bacteriophagostimulation algae-bed flow tube is around cup jointing at support sleeve's outer wall, the one end is along the top fixed connection to water purification discharge tube on support sleeve's the casing, and the other end of phagostimulation algae-bed flow is connected with water purification discharge tube through the control valve, the water-permeable tube is connected with the water-absorbing layer on the high-efficient electric heating tube, the water-absorbing layer is connected with the water-absorbing layer is fixed to the bottom of water discharge tube, high-efficient electric heating tube is connected with the water-efficient electric water discharge tube, and is connected with the water-absorbing layer, and is fixed on the bottom of water layer.
As a preferable scheme of the invention, the phagostimulation algae bed flow tube is fixedly sleeved on the outer wall of the supporting sleeve in a spiral structure, wherein one end of the phagostimulation algae bed flow tube is in a communication structure with the inner cavity of the supporting sleeve, and the outer wall of the phagostimulation algae bed flow tube is connected on the end face of the base through a fixed bracket.
As a preferable scheme of the invention, one end of the power supply wiring extends to the outside of the supporting sleeve and is electrically connected to the power supply controller, wherein the power supply controller is electrically connected to the algae-water separator through a wire.
As a preferable scheme of the invention, the driving shaft of the algae-water separator is rotationally connected with the supporting sleeve, the microporous water permeable net is of a cylindrical structure and is made of a No. 304 stainless steel material, and bristles on the cleaning brush are in contact with the outer wall of the microporous water permeable net.
As a preferable scheme of the invention, the concentrated algae water return pipe and the algae discharge pipeline are in a communication structure, and the concentrated algae water return pipe and the flow pipe of the phagostimulant bed are in a communication structure.
As a preferable scheme of the invention, one end of the concentrated algae water return pipe extends to a water-resisting layer and a supporting sleeve are of a communication structure, and the water-resisting layer and the inner wall of the supporting sleeve are subjected to waterproof sealing treatment.
As a preferable scheme of the invention, the supporting sleeve and the concentrated algae water return pipe are respectively manufactured by adopting high-temperature-resistant glass or organic glass or acrylic with good light transmittance.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, by designing the spiral type phagostimulant bed sewage deep purification device, cultured phagostimulant is added into the phagostimulant bed flow tube, the bottom is introduced into the effluent of the secondary sedimentation tank of the sewage treatment plant, if the sunlight is strong in daytime, the light is not required to be turned on, the high-efficiency electric heating tube is turned on at night to provide light energy and heat energy for the phagostimulant bed flow tube, the efficiency of the phagostimulant under photosynthesis in the pipeline is improved, the nitrogen and phosphorus concentration of the effluent of the secondary sedimentation tank of the sewage treatment plant can be further reduced, the sludge production is reduced, the treatment cost is reduced, dead phagostimulant and recycled phagostimulant are simultaneously removed, and the discharged phagostimulant can be used for making biodiesel and other resources for recycling, so that the effect of comprehensively utilizing wastes and protecting environment is achieved.
Drawings
FIG. 1 is a schematic diagram of a spiral phaga bed sewage deep purification device of the invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 in accordance with the present invention.
In the figure: 1. a base; 2. a support sleeve; 3. an algae-water separator; 4. a U-shaped bracket; 5. a cleaning brush; 6. a microporous water permeable mesh; 7. a purified water discharge pipe; 8. a clean water discharge control valve; 9. a concentrated algae water return pipe; 10. a flow tube of the bacteriophagic algae bed; 11. a waste water control valve; 12. a wastewater inlet pipe; 13. a concentrated algae water control valve; 14. an algae removal pipeline; 15. an algae removal control valve; 16. a water-resistant layer; 17. high-efficiency electric heating tubes; 18. a power supply wiring; 19. and (5) fixing the bracket.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
In order that the invention may be readily understood, several embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the invention may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.
Unless defined otherwise, all 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, and the terms used herein in this description of the invention are for the purpose of describing particular embodiments only and are not intended to be limiting of the invention, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, the present invention provides a technical solution:
the utility model provides a spiral type algae-holding bed sewage deep purification device, including base 1, fixedly provided with support sleeve 2 on the terminal surface of base 1, the center department fixedly provided with algae-water separator 3 of support sleeve 2 terminal surface, the drive shaft of algae-water separator 3 runs through the inside fixedly connected with U type support 4,U type support 4 inside opposite lateral wall on be connected with cleaning brush 5, the inside correspondence of cleaning brush 5 is provided with micropore water-permeable net 6, the bottom fixedly connected with water purification discharge tube 7 of micropore water-permeable net 6, the one end of water purification discharge tube 7 runs through support sleeve 2, and extend to the external connection of support sleeve 2 has water purification discharge control valve 8, one side of micropore water-permeable net 6 is and be located support sleeve 2's outer wall fixedly provided with dense algae water return pipe 9, the other end of dense algae water return pipe 9 is connected on algae-holding bed flow tube 10, the outer wall of support sleeve 2 is encircled and is cup jointed, one end of algae-holding bed flow tube 10 is along the top fixedly connected on support sleeve 2's the casing to water purification discharge tube 7, the other end of algae-holding bed flow tube 10 is connected with water-permeable tube 11 through control valve 12, water-inlet tube 13 is connected with water-permeable tube 13 high-efficient side of water-supply pipe 13, the bottom of water-supply layer 16 is connected with water-discharge layer 16 is fixed on the bottom of water-side of support sleeve 14, high-efficient water-supply pipe 17 is connected with the water-side of water-permeable tube 13, the high-efficient water-supply pipe is connected with the bottom of water-supply pipe 17 is fixed on the bottom of water-side of the upper-station pipeline is connected with the water-station bottom of the water-supply layer, the water-supply layer 17 is connected with the bottom of the water-side of the water-supply pipe 17, and is connected with the bottom of the water-station, and is connected with the bottom of the bottom, and is connected.
As a further preferable scheme of the invention, the phagostimulation algae bed flow tube 10 is fixedly sleeved on the outer wall of the support sleeve 2 in a spiral structure, wherein one end of the phagostimulation algae bed flow tube 10 is in a communication structure with the inner cavity of the support sleeve 2, and the outer wall of the phagostimulation algae bed flow tube 10 is connected to the end face of the base 1 through a fixing bracket 19.
As a further preferred embodiment of the invention, one end of the power connection 18 extends outside the support sleeve 2 and is electrically connected to a power supply controller, wherein the power supply controller is electrically connected to the algae-water separator 3 by a wire.
As a further preferable scheme of the invention, the driving shaft of the algae-water separator 3 is rotationally connected with the supporting sleeve 2, the microporous water permeable net 6 is of a cylindrical structure and is made of a 304# stainless steel material, so that the effect of corrosion prevention and service life extension can be effectively achieved, wherein bristles on the cleaning brush 5 are contacted with the outer wall of the microporous water permeable net 6, the algae-water separator 3 is controlled to rotate, and the algae-water separator 3 is controlled to rotationally scrape the phage algae.
As a further preferable scheme of the invention, the concentrated algae water return pipe 9 and the algae discharging pipeline 14 are in a communication structure, and the concentrated algae water return pipe 9 and the phagostimulant bed flow pipe 10 are in a communication structure.
As a further preferable scheme of the invention, one end of the concentrated algae water return pipe 9 extends to the water-resisting layer 16 to be in a communicating structure with the supporting sleeve 2, and the water-resisting layer 16 and the inner wall of the supporting sleeve 2 are subjected to waterproof sealing treatment.
As a preferable scheme of the invention, the supporting sleeve 2 and the concentrated algae water return pipe 9 are respectively made of high-temperature-resistant glass or organic glass or acrylic with good light transmittance, so as to facilitate photosynthesis of the phagostimulant.
The specific implementation cases are as follows:
step 1), one end of a power connection 18 extends to the outside of the supporting sleeve 2 and is electrically connected to a power controller, wherein the power controller is electrically connected to the algae-water separator 3 through a lead, and the equipment is electrified;
step 2), adding cultured phagostimulant into a phagostimulant bed flow pipe 10, opening a wastewater control valve 11, introducing water discharged from a secondary sedimentation tank of a sewage treatment plant through a wastewater inlet pipe 12, wherein at the moment, a purified water discharge control valve 8, a concentrated algae water control valve 13 and an algae discharge control valve 15 are all in a closed state, COD in sewage is used as a carbon source, nitrogen and phosphorus are used as nutrients, fecal coliform in sewage is used as food, and meanwhile, nutrients such as COD, N, P and the like in the water are consumed;
the supporting sleeve 2 and the concentrated algae water return pipe 9 are respectively made of high-temperature-resistant glass or organic glass or acrylic, so that photosynthesis of the phage algae is facilitated or the high-efficiency electric heating pipe 17 is controlled to emit heat and light, and the middle lamplight is artificial sunlight with specific wavelength;
controlling the temperature within the range of 15-25 ℃, and controlling the size of the phagostimulant to: 10-25 micrometers (length), 5-15 micrometers (width), controlling the concentration of the phagostimulant to be 0.3-0.5g/L, keeping the phagostimulant in an algae bed for 3-5 days, keeping the sewage in the algae bed for 48 hours, and controlling the dissolved oxygen concentration of the algae bed to be 1.5-3.5mg/L; the device can realize the treatment capacity of 50T/d, and the cultured phagostimulant is added into the phagostimulant bed flow tube 10, the bottom is introduced into the effluent of the secondary sedimentation tank of the sewage treatment plant, if the sunlight is strong in daytime, the light is not required to be turned on, the high-efficiency electric heating tube 17 is turned on at night to provide light energy and heat energy for the phagostimulant bed flow tube 10, and the efficiency of the phagostimulant under photosynthesis in the pipeline is improved;
and 3) after photosynthesis of the phagostimulant in the step 2 is completed, opening a purified water discharge control valve 8, a concentrated algae water control valve 13 and an algae discharge control valve 15, wherein the waste water control valve 11 is in a closed state, at the same time, the driving shaft of the phagostimulant separator 3 is rotationally connected with the supporting sleeve 2, the microporous water permeable net 6 is of a cylindrical structure and is manufactured by adopting a 304# stainless steel material, wherein the brush hair on the cleaning brush 5 is contacted with the outer wall of the microporous water permeable net 6, the phagostimulant separator 3 is controlled to rotate, the phagostimulant separator 3 rotationally scrapes the phagostimulant, and the microporous water permeable net 6 is utilized for filtering, so that solid-liquid separation is carried out on the phagostimulant and the water after photosynthesis, and the water after photosynthesis is sequentially removed, and if the two valves remove dead phagostimulant and the recycled phagostimulant, the discharged phagostimulant can be used for manufacturing biodiesel and other recycling utilization.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a spiral phage algae bed sewage deep purification device, includes base (1), its characterized in that: the utility model discloses a sewage treatment device, including base (1) and support sleeve (2), the fixed support sleeve (2) that is provided with in terminal surface of base (1), the center department of support sleeve (2) terminal surface is fixedly provided with algae-water separator (3), the inside drive shaft of inside algae-water separator (3) runs through the inside fixedly connected with U type support (4) of support sleeve (2), be connected with cleaning brush (5) on the inside relative lateral wall of U type support (4), the inside of cleaning brush (5) corresponds and is provided with micropore water permeable net (6), the bottom fixedly connected with water purification discharge pipe (7) of micropore water permeable net (6), the one end of water purification discharge pipe (7) runs through support sleeve (2) to extend to the external connection of support sleeve (2) has water purification discharge control valve (8), one side of micropore water permeable net (6) and be located the outer wall fixedly provided with dense algae-water backflow pipe (9) of support sleeve (2), the other end of dense algae-water backflow pipe (9) is connected on the phagocytosis bed flow tube (10), the phagocytosis bed flow (10) encircles at the outer wall of support sleeve (2), the sewage treatment device is connected with sewage discharge pipe (10) along the sewage flow control valve (12) of the sewage treatment device on the side of support sleeve (2), the device is characterized in that the concentrated algae water return pipe (9) is connected with a concentrated algae water control valve (13), an algae discharging pipeline (14) is connected to the concentrated algae water control valve (13) above and positioned on the concentrated algae water return pipe (9), an algae discharging control valve (15) is fixedly arranged on the algae discharging pipeline (14), a water-resisting layer (16) is fixedly sleeved on the inner wall of the supporting sleeve (2) and positioned below the water purifying discharge pipe (7), a high-efficiency electric heating pipe (17) is fixedly arranged below the water-resisting layer (16), the bottom of the high-efficiency electric heating pipe (17) is fixedly arranged on the base (1), and the bottom of the high-efficiency electric heating pipe (17) is connected with a power supply wiring (18); the supporting sleeve (2) is made of high-temperature-resistant glass or acrylic with good light transmittance, and the high-efficiency electric heating tube (17) can provide light energy and heat energy for the phagostimulant bed flow tube (10) so as to improve the efficiency of the phagostimulant under photosynthesis in the pipeline; after the photosynthesis of the phage algae is finished, a purified water discharge control valve (8), a concentrated algae water control valve (13) and an algae discharge control valve (15) are opened, at the moment, the waste water control valve (11) is in a closed state, meanwhile, the algae-water separator (3) is controlled to rotate, the algae-water separator (3) is controlled to rotationally scrape the phage algae on the outer wall of the microporous water permeable net (6), the microporous water permeable net (6) is utilized for filtering, solid-liquid separation is carried out on the phage algae and the water after photosynthesis, and the phage algae and the purified water are sequentially discharged; the bacteriophagic bed flow tube (10) is fixedly sleeved on the outer wall of the supporting sleeve (2) in a spiral structure, one end of the bacteriophagic bed flow tube (10) and the inner cavity of the supporting sleeve (2) are in a communication structure, and the outer wall of the bacteriophagic bed flow tube (10) is connected to the end face of the base (1) through the fixing bracket (19); the driving shaft of the algae-water separator (3) is rotationally connected with the supporting sleeve (2), the microporous water permeable net (6) is of a cylindrical structure and is made of a No. 304 stainless steel material, and bristles on the cleaning brush (5) are in contact with the outer wall of the microporous water permeable net (6).
2. The spiral phagostimulant bed sewage deep purification device according to claim 1, wherein: one end of the power supply wiring (18) extends to the outside of the supporting sleeve (2) and is electrically connected to the power supply controller, and the power supply controller is electrically connected to the algae-water separator (3) through a wire.
3. The spiral phagostimulant bed sewage deep purification device according to claim 1, wherein: the concentrated algae water return pipe (9) and the algae discharge pipeline (14) are of a communication structure, and the concentrated algae water return pipe (9) and the bacteriophagic algae bed flow pipe (10) are of a communication structure.
4. A spiral phagostimulant bed sewage deep purification device according to claim 3, characterized in that: one end of the concentrated algae water return pipe (9) extends to a water-resisting layer (16) to be in a communication structure with the supporting sleeve (2), and the inner walls of the water-resisting layer (16) and the supporting sleeve (2) are subjected to waterproof sealing treatment.
5. The spiral phagostimulant bed sewage deep purification device according to claim 1, wherein: the concentrated algae water return pipe (9) is made of glass or acrylic with good light transmittance and high temperature resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371046.9A CN114620904B (en) | 2022-04-11 | 2022-04-11 | Spiral type phagostimulant bed sewage deep purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371046.9A CN114620904B (en) | 2022-04-11 | 2022-04-11 | Spiral type phagostimulant bed sewage deep purification device |
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| Publication Number | Publication Date |
|---|---|
| CN114620904A CN114620904A (en) | 2022-06-14 |
| CN114620904B true CN114620904B (en) | 2023-09-05 |
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| CN202210371046.9A Active CN114620904B (en) | 2022-04-11 | 2022-04-11 | Spiral type phagostimulant bed sewage deep purification device |
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| CN210367362U (en) * | 2019-08-16 | 2020-04-21 | 山西省生态环境研究中心 | Solar energy microalgae constant temperature domestic sewage treatment pond |
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