CN104556369A - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
- Publication number
- CN104556369A CN104556369A CN201510004001.8A CN201510004001A CN104556369A CN 104556369 A CN104556369 A CN 104556369A CN 201510004001 A CN201510004001 A CN 201510004001A CN 104556369 A CN104556369 A CN 104556369A
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- Prior art keywords
- fluidized bed
- sewage
- bed reaction
- reaction zone
- muddy water
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2833—Anaerobic digestion processes using fluidized bed reactors
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a sewage treatment system comprising a treatment tower body, a muddy water outlet, a muddy water outlet, a muddy water inlet, a clean water outlet and a biogas outlet, wherein an anaerobic fluidized bed reaction zone, a sludge settling zone and a membrane separation zone are sequentially defined in the treatment tower body from bottom to top; carrier particles attached with anaerobic microorganisms are contained in the anaerobic fluidized bed reaction zone which is provided with a vertical flow guide cylinder; a solid-liquid separator is arranged at the upper end of the flow guide cylinder; the membrane separation zone is provided with a rotary membrane component; the sewage inlet is formed in the lower part positioned on the side wall of the anaerobic fluidized bed reaction zone; the muddy water outlet is formed in the upper part positioned on the side wall of the anaerobic fluidized bed reaction zone; the muddy water inlet is formed in the lower part positioned on the side wall of the anaerobic fluidized bed reaction zone and is communicated with the flow guide cylinder; the clean water outlet is formed in a side wall positioned in the membrane separation zone; and the biogas outlet is formed in the top part positioned in the membrane separation zone. The system not only can realize purification of sewage but also can generate a lot of high-caloric-value biogas, and is compact in structure and low in running cost.
Description
Technical field
The invention belongs to technical field of sewage, specifically, the present invention relates to a kind of Sewage treatment systems.
Background technology
Sewage disposal technology is developed so far, and how on the basis ensureing effluent quality, recycles become current research focus to the energy in sewage.Efficient anaerobe technical finesse sewage can realize sewage purification and can produce again a large amount of high heating value biogas and be used as the energy, obtains development and application widely.But, reactor fluctuation of service, effluent quality be difficult to up to standard, methane production is not high, becomes the bottleneck problem that this technology is popularized further.
Anaerobic membrane bioreactor technology (AnMBR) is a kind of technique of efficient anaerobe technology and membrane separation technique being carried out be coupled, and development in recent years is rapid.Existing anaerobic membrane bioreactor technology ubiquity water production rate is lower, and fouling membrane speed is fast, the shortcomings such as energy consumption is higher, becomes the restrictive factor affected in MBR technology popularization application.For alleviating fouling membrane, usually adopting biogas returning aeration, improve the means such as cross-flow rate, and these means can cause energy consumption to increase, running cost raises, and biogas contains relatively large flammable explosive gas in addition, there is potential safety hazard.In the research of existing anaerobic membrane bioreactor sewage disposal and energy recovery technology, how to alleviate fouling membrane further, reducing energy consumption, is one of subject matter that will solve at present.
Therefore, urgently seek a kind of effective raising water production rate newly, reduce the sewage disposal technology of running cost.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of Sewage treatment systems, and this system both can realize dirty water purification, can produce again a large amount of high heating value biogas, and compact construction, running cost is low.
In one aspect of the invention, the present invention proposes a kind of Sewage treatment systems, comprising:
Treating column body, anaerobic fluidized bed reaction zone, sludge settling district and membrane separation zone is limited from bottom to top successively in described treating column body, the carrier granule being attached with anaerobion is filled in described anaerobic fluidized bed reaction zone, and be suitable for utilizing the organism in anaerobion decomposition sewage, described anaerobic fluidized bed reaction zone has the guide shell vertically arranged, described guide shell upper end is provided with solid-liquid separator, and described membrane separation zone has rotation membrane module;
Sewage inlet, described sewage inlet is arranged on the bottom that is positioned at described anaerobic fluidized bed reaction zone sidewall and is connected with described guide shell;
Muddy water exports, and described muddy water outlet is arranged on the top being positioned at described anaerobic fluidized bed reaction zone sidewall, and in the vertical direction, described muddy water outlet position is higher than described solid-liquid separator;
Muddy water entrance, described muddy water entrance is arranged on the bottom that is positioned at described anaerobic fluidized bed reaction zone sidewall and is connected with described guide shell;
Clear water output, described clear water output be arranged on be positioned at described membrane separation zone sidewall on; And
Biogas exports, and described biogas outlet is arranged on the top being positioned at described membrane separation zone.
Anaerobic fluidized bed by adopting according to the Sewage treatment systems of the embodiment of the present invention, utilize the organism in the anaerobion decomposition sewage be filled on anaerobic fluidized bed interior carrier granule, thus can sewage treating efficiency be significantly improved, and the biogas of high heating value can be produced, before carrying out membrane separation, settlement treatment will be carried out in sludge settling district through anaerobic fluidized bed reaction zone gained liquid in advance simultaneously, thus significantly can reduce the contact of membrane module and dirt, and then the energy consumption effectively reduced in fouling membrane and membrane module operational process, and can effectively reduce membrane separation zone microorganism concn by arranging dirt negative area, thus keep biomass in anaerobic fluidized bed reaction zone, secondly adopt in membrane separation zone and rotate membrane module, make multiple circular film be rotated in film surface and form shearing force, thus reduce fouling membrane further, the present invention passes through anaerobic fluidized bed reaction in addition, sludge settling and membrane sepn carry out in close-coupled processing tower, make system architecture compact, floor space is little, and dirt negative area gained dirt relies on self gravitation to fall into anaerobic fluidized bed reaction zone and again contacts with anaerobion, thus dirt refluxing unit can be saved, and then significantly reduce running cost, and the biogas that anaerobic fluidized bed reaction zone produces is through membrane separation zone, film surface shear forces can be strengthened further, thus reduce fouling membrane and energy consumption further.
In addition, Sewage treatment systems according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, described Sewage treatment systems comprises further: sewage storage tank, and described sewage storage tank is connected with described sewage inlet.Thus, the continuity of system cloud gray model can be improved.
In some embodiments of the invention, described Sewage treatment systems comprises further: film suction pump, and described film suction pump is connected with described clear water output; Clear water storage tank, described clear water storage tank is connected with described film suction pump.Thus, membrane sepn efficiency can be significantly improved.
In some embodiments of the invention, described Sewage treatment systems comprises further: Membrane cleaning pump, described Membrane cleaning pump is connected with described clear water output with described clear water storage tank respectively, and is suitable for utilizing the clear water in described clear water storage tank to clean described rotation membrane module.Thus, membrane sepn efficiency can be improved further.
In some embodiments of the invention, described rotation membrane module contains: multiple circular film; Turning axle, described multiple circular film is series on described turning axle; Power set, described power set is connected with described turning axle.Thus, fouling membrane and energy consumption can effectively be reduced.
In some embodiments of the invention, described circular film is organic polymer film forming or microgrid Dynamic Membrane.Thus, can select according to the actual requirements, to improve membrane sepn efficiency.
In some embodiments of the invention, described carrier granule is be selected from least one in zeolite, gac, glass, plastics and synthetic resins.Thus, can select according to the actual requirements, to improve sewage treating efficiency.
In some embodiments of the invention, described Sewage treatment systems comprises further: gas extractor, and described gas extractor exports with described biogas and is connected, and is suitable for the biogas collecting the generation of described treating column body.
In some embodiments of the invention, described biogas is containing promising methane.
In some embodiments of the invention, described Sewage treatment systems comprises further: the first recycle pump, described first recycle pump exports with described muddy water respectively and is connected with muddy water entrance, and is suitable for the muddy water that described dirt negative area obtains to be back in described guide shell; And second recycle pump, described second recycle pump is connected with described sewage inlet with described sewage storage tank respectively, and is suitable for described sewage to be supplied to described anaerobic fluidized bed reaction zone.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of Sewage treatment systems according to an embodiment of the invention;
Fig. 2 is the structural representation of the Sewage treatment systems according to another embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In one aspect of the invention, the present invention proposes a kind of Sewage treatment systems.Below with reference to Fig. 1, the Sewage treatment systems of the embodiment of the present invention is described in detail.According to embodiments of the invention, this system comprises:
Treating column body 100: according to embodiments of the invention, treating column body 100 limits anaerobic fluidized bed reaction zone 11, dirt negative area 12 and membrane separation zone 13 from top to bottom successively.Contriver finds, by anaerobic fluidized bed reaction, sludge settling and membrane sepn are carried out in close-coupled processing tower, make system architecture compact, floor space is little, and dirt negative area gained dirt is settled down to anaerobic fluidized bed reaction zone and again contacts with anaerobion, thus dirt refluxing unit can be saved, and then significantly reduce running cost.
According to embodiments of the invention, in anaerobic fluidized bed reaction zone 11, the carrier granule 111 being attached with anaerobion can be filled, and be suitable for utilizing the organism in anaerobion decomposition sewage.Thus, can sewage treating efficiency be significantly improved, and the biogas of high heating value can be produced.
According to embodiments of the invention, anaerobic fluidized bed reaction zone 11 can have the guide shell 112 vertically arranged, and the upper end of guide shell 112 is provided with solid-liquid separator 113, for the mixed system containing sewage and carrier granule is carried out solid-liquid separation.Concrete, sewage enters in guide shell and contacts with the carrier granule containing anaerobion, utilize the organism in anaerobion decomposition sewage, carrier granule with upwelling through solid-liquid separator, make carrier granule along guide shell externally to lower sedimentation, and the liquid be separated continues upwards to flow into negative area.
According to embodiments of the invention, in anaerobic fluidized bed reaction zone solid particulate particular type and be not particularly limited, according to a particular embodiment of the invention, solid particulate can for being selected from least one in zeolite, gac, glass, plastics (as PET, PP) and synthetic resins.
According to embodiments of the invention, membrane separation zone 13 can have rotation membrane module 130, according to a particular embodiment of the invention, rotate membrane module 130 and can comprise multiple circular film 131, turning axle 132 and power set 133, according to concrete example of the present invention, multiple circular film 131 is series on turning axle 132, and power set 133 is connected with turning axle 132, concrete, power set can be motor.Contriver finds, adopts and rotates membrane module, make multiple circular film rotary film formation surface shearing force, thus reduce fouling membrane and energy consumption further in membrane separation zone.
According to embodiments of the invention, circular film can be organic synthesis film or microgrid Dynamic Membrane.Thus, membrane sepn efficiency can be significantly improved, thus increase water quality further.
According to embodiments of the invention, treating column body 100 is provided with sewage inlet 101, muddy water outlet 102, muddy water entrance 103, clear water output 104 and biogas outlet 105.
According to embodiments of the invention, sewage inlet 101 is arranged on the bottom that is positioned at anaerobic fluidized bed reaction zone 11 sidewall and is connected with guide shell 112, for being supplied to by sewage in described treating column body.
According to embodiments of the invention, muddy water outlet 102 is arranged on the top being positioned at anaerobic fluidized bed reaction zone 11 sidewall, and in the vertical direction, muddy water exports 102 positions higher than solid-liquid separator 113, muddy water entrance 103 is arranged on the bottom that is positioned at anaerobic fluidized bed reaction zone 11 sidewall and is connected with guide shell 113, and the muddy water that the concentration for being obtained in sludge settling district is higher carries out circular treatment.Thus, significantly can reduce fluidized-bed and run required energy consumption, improve sewage treating efficiency.
According to embodiments of the invention, clear water output 104 be arranged on be positioned at membrane separation zone 13 sidewall on, for discharging the clear water that membrane separation zone obtains.
According to embodiments of the invention, biogas outlet 105 is arranged on the top being positioned at membrane separation zone 13, and for discharging the biogas produced in reaction tower body, according to a particular embodiment of the invention, this biogas can contain methane.
Anaerobic fluidized bed by adopting according to the Sewage treatment systems of the embodiment of the present invention, utilize the organism in the anaerobion decomposition sewage be filled on anaerobic fluidized bed interior carrier granule, thus can sewage treating efficiency be significantly improved, and the biogas of high heating value can be produced, before carrying out membrane separation, settlement treatment will be carried out in dirt negative area through anaerobic fluidized bed reaction zone gained liquid in advance simultaneously, thus significantly can reduce the contact of membrane module and dirt, and then the energy consumption effectively reduced in fouling membrane and membrane module operational process, and can effectively reduce membrane separation zone microorganism concn by arranging dirt negative area, thus keep biomass in anaerobic fluidized bed reaction zone, secondly adopt in membrane separation zone and rotate membrane module, make multiple circular film rotary film formation surface shearing force, thus reduce fouling membrane and energy consumption further, the present invention passes through anaerobic fluidized bed reaction in addition, sludge settling and membrane sepn carry out in close-coupled processing tower, make system architecture compact, floor space is little, and dirt negative area gained dirt is settled down to anaerobic fluidized bed reaction zone and again contacts with anaerobion, thus dirt refluxing unit can be saved, and then significantly reduce running cost, and the biogas that anaerobic fluidized bed reaction zone produces is through membrane separation zone, film surface shear forces can be strengthened further, thus reduce fouling membrane and energy consumption.
With reference to figure 2, the Sewage treatment systems of the embodiment of the present invention comprises further:
Sewage storage tank 200: according to embodiments of the invention, sewage storage tank 200 is connected with sewage inlet 101, and is suitable for storing sewage, and is supplied in treating column body by sewage.
Film suction pump 300: according to embodiments of the invention, film suction pump 300 is connected with clear water output 104, and is suitable for extracting the clear water obtained through over-rotation membrane module out membrane separation zone.Thus, membrane sepn efficiency can be significantly improved.
Clear water storage tank 400: according to embodiments of the invention, clear water storage tank 400 is connected with film suction pump 300, and be suitable for store be separated the clear water obtained from membrane separation zone.
Membrane cleaning pump 500: according to embodiments of the invention, Membrane cleaning pump 500 is connected with clear water output 105 with clear water storage tank 400 respectively, and is suitable for utilizing the clear water in clear water storage tank to clean rotation membrane module.Thus, membrane sepn efficiency can be improved further.
Gas extractor 600: according to embodiments of the invention, gas extractor 600 and biogas export 106 and are connected, and are suitable for the biogas of collection and treatment tower body generation.
First recycle pump 700: according to embodiments of the invention, the first recycle pump 700 exports 102 with muddy water respectively and is connected with muddy water entrance 103, and the muddy water be suitable for dirt negative area obtains is back in guide shell.Thus, energy consumption can be reduced further, improve sewage treating efficiency.
Second recycle pump 800: according to embodiments of the invention, the second recycle pump 800 is connected with sewage inlet 101 with sewage storage tank 200 respectively, and is suitable for sewage to be supplied to anaerobic fluidized bed reaction zone.
Concrete, utilize the second recycle pump by sewage in sewage storage tank in the guide shell that sewage inlet is supplied to anaerobic fluidized bed reaction zone, sewage is contacted with the carrier granule containing anaerobion in guide shell, make the organism in anaerobion decomposition sewage, and produce the biogas of high heating value, carrier granule with upwelling through solid-liquid separator, make carrier granule along guide shell externally to lower sedimentation, and the liquid be separated continues upwards to flow, spilling enters negative area and carries out sedimentation, the dirt that its Midst density is larger is settled down to anaerobic fluidized bed reaction zone and again contacts with anaerobion, the muddy water that the concentration simultaneously obtained is larger enters guide shell through the first recycle pump from muddy water entrance by muddy water outlet to be continued to contact with particulate vector, and supernatant liquor that sludge settling district obtains overflows and enters membrane separation zone and retain through over-rotation membrane module the dirt obtained and directly get back to sludge settling district, be settled down to anaerobic fluidized bed reaction zone again, adopt film suction pump that supernatant liquor is separated through rotation membrane module the clear water obtained is stored in clear water storage tank through clear water output simultaneously, biogas after purification is collected in gas extractor through biogas outlet simultaneously, if on rotation membrane module during circular film blocking, close film suction pump, open Membrane cleaning pump, clear water in clear water storage tank is utilized to clean center of circle diaphragm.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a Sewage treatment systems, is characterized in that, comprising:
Treating column body, anaerobic fluidized bed reaction zone, sludge settling district and membrane separation zone is limited from bottom to top successively in described treating column body, the carrier granule being attached with anaerobion is filled in described anaerobic fluidized bed reaction zone, and be suitable for utilizing the organism in anaerobion decomposition sewage, described anaerobic fluidized bed reaction zone has the guide shell vertically arranged, described guide shell upper end is provided with solid-liquid separator, and described membrane separation zone has rotation membrane module;
Sewage inlet, described sewage inlet is arranged on the bottom that is positioned at described anaerobic fluidized bed reaction zone sidewall and is connected with described guide shell;
Muddy water exports, and described muddy water outlet is arranged on the top being positioned at described anaerobic fluidized bed reaction zone sidewall, and in the vertical direction, described muddy water outlet position is higher than described solid-liquid separator;
Muddy water entrance, described muddy water entrance is arranged on the bottom that is positioned at described anaerobic fluidized bed reaction zone sidewall and is connected with described guide shell;
Clear water output, described clear water output be arranged on be positioned at described membrane separation zone sidewall on; And
Biogas exports, and described biogas outlet is arranged on the top being positioned at described membrane separation zone.
2. system according to claim 1, is characterized in that, comprises further:
Sewage storage tank, described sewage storage tank is connected with described sewage inlet.
3. system according to claim 1, is characterized in that, comprises further:
Film suction pump, described film suction pump is connected with described clear water output;
Clear water storage tank, described clear water storage tank is connected with described film suction pump.
4. system according to claim 3, is characterized in that, comprises further:
Membrane cleaning pump, described Membrane cleaning pump is connected with described clear water output with described clear water storage tank respectively, and is suitable for utilizing the clear water in described clear water storage tank to clean described rotation membrane module.
5. system according to claim 1, is characterized in that, described rotation membrane module contains:
Multiple circular film;
Turning axle, described multiple circular film is series on described turning axle;
Power set, described power set is connected with described turning axle.
6. system according to claim 5, is characterized in that, described circular film is organic synthesis film or microgrid Dynamic Membrane.
7. system according to claim 1, is characterized in that, described carrier granule is be selected from least one in zeolite, gac, glass, plastics and synthetic resins.
8. system according to claim 1, is characterized in that, comprises further:
Gas extractor, described gas extractor exports with described biogas and is connected, and is suitable for the biogas collecting the generation of described treating column body.
9. system according to claim 8, is characterized in that, described biogas contains methane.
10. system according to claim 2, is characterized in that, comprises further:
First recycle pump, described first recycle pump exports with described muddy water respectively and is connected with muddy water entrance, and is suitable for the muddy water that described dirt negative area obtains to be back in described guide shell; And
Second recycle pump, described second recycle pump is connected with described sewage inlet with described sewage storage tank respectively, and is suitable for described sewage to be supplied to described anaerobic fluidized bed reaction zone.
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| CN201510004001.8A CN104556369B (en) | 2015-01-05 | 2015-01-05 | Sewage disposal system |
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| CN201510004001.8A CN104556369B (en) | 2015-01-05 | 2015-01-05 | Sewage disposal system |
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| CN107352648A (en) * | 2017-09-11 | 2017-11-17 | 上海海事大学 | New up flow type MFC MBR coupled systems under a kind of anaerobic condition |
| CN109179647A (en) * | 2018-09-17 | 2019-01-11 | 清华大学 | A kind of sulphur autotrophic denitrification denitrogenation thermopnore |
| CN110563252A (en) * | 2019-09-05 | 2019-12-13 | 安徽省地质矿产勘查局321地质队 | Mixed treatment system of acid mining industry waste water and beasts and birds waste water |
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| CN114451347A (en) * | 2022-02-15 | 2022-05-10 | 佛山市顺德区养德顺农业科技有限公司 | Filtering and oxygen-increasing system |
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| CN110563252A (en) * | 2019-09-05 | 2019-12-13 | 安徽省地质矿产勘查局321地质队 | Mixed treatment system of acid mining industry waste water and beasts and birds waste water |
| CN111892159A (en) * | 2020-06-24 | 2020-11-06 | 清华大学 | Anaerobic membrane bioreactor and membrane pollution control method |
| CN114451347A (en) * | 2022-02-15 | 2022-05-10 | 佛山市顺德区养德顺农业科技有限公司 | Filtering and oxygen-increasing system |
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|---|---|
| CN104556369B (en) | 2017-04-05 |
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