CN112850845A - Wastewater treatment device and method capable of inhibiting sludge bulking and sludge foaming - Google Patents
Wastewater treatment device and method capable of inhibiting sludge bulking and sludge foaming Download PDFInfo
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- CN112850845A CN112850845A CN202110120490.9A CN202110120490A CN112850845A CN 112850845 A CN112850845 A CN 112850845A CN 202110120490 A CN202110120490 A CN 202110120490A CN 112850845 A CN112850845 A CN 112850845A
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- Prior art keywords
- sludge
- ultraviolet lamp
- wastewater treatment
- treatment apparatus
- ultraviolet
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Links
- 239000010802 sludge Substances 0.000 title claims abstract description 70
- 238000005187 foaming Methods 0.000 title claims abstract description 24
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 17
- 230000002401 inhibitory effect Effects 0.000 title abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 239000002351 wastewater Substances 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000008399 tap water Substances 0.000 claims abstract description 4
- 235000020679 tap water Nutrition 0.000 claims abstract description 4
- 230000001678 irradiating effect Effects 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 abstract description 15
- 239000006260 foam Substances 0.000 abstract description 8
- 230000001954 sterilising effect Effects 0.000 abstract description 8
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 241000233866 Fungi Species 0.000 description 18
- 238000005273 aeration Methods 0.000 description 8
- 230000002411 adverse Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention relates to a wastewater treatment apparatus capable of suppressing sludge bulking and sludge foaming, comprising: a reaction tank; the ultraviolet lamp is arranged above the reaction tank; the self-cleaning component comprises a tap water spray head arranged on the periphery of the ultraviolet lamp; and the reflecting cover is arranged above the ultraviolet lamp. Because the ultraviolet lamp is arranged above the reaction tank, the ultraviolet lamp has a sterilization effect and can mainly kill filamentous bacteria, thereby solving the problems of sludge expansion and sludge foam. The self-cleaning component can clean the ultraviolet lamp to clear impurities such as sludge and sewage, and the reflecting cover reflects the ultraviolet ray into the reaction tank. And a wastewater treatment method capable of inhibiting sludge bulking and sludge foaming, which comprises irradiating the surface of the wastewater with ultraviolet rays in a UV-C waveband. Through the setting of ultraviolet lamp, the problem of mud inflation and mud foam has been solved well.
Description
Technical Field
The present invention relates to a wastewater treatment apparatus and method capable of suppressing sludge bulking and sludge foaming.
Background
In the wastewater treatment project, in the aerobic aeration adopting the biochemical treatment process, the sludge expansion or sludge foaming phenomenon is often generated, which not only causes a large amount of sludge loss, but also leads to effluent turbidity and the situation of effluent deterioration, and the two problems are always the troubles often encountered in the aerobic operation process of the wastewater station, and in the serious case, the breakdown of the operation of the biochemical system can be caused.
Disclosure of Invention
The invention aims to provide a wastewater treatment device capable of inhibiting sludge expansion and sludge foam, and solves the problems of sludge expansion and sludge foam.
In order to achieve the purpose, the invention adopts the technical scheme that:
the present invention provides a wastewater treatment apparatus capable of suppressing sludge bulking and sludge foaming, comprising:
a reaction tank;
the ultraviolet lamp is arranged above the reaction tank;
the self-cleaning component comprises a tap water spray head arranged on the periphery of the ultraviolet lamp;
and the reflecting cover is arranged above the ultraviolet lamp.
Preferably, it further comprises a lifting assembly for lifting the ultraviolet lamp.
Further, the lifting assembly includes a pulley.
Preferably, it further comprises a power adjustment assembly for adjusting the light intensity of the ultraviolet lamp.
Preferably, the ultraviolet lamp is an ultraviolet lamp tube in the UV-C waveband.
Preferably, the reflector surface is coated with a magnesium oxide coating.
Also provided is a wastewater treatment method capable of suppressing sludge bulking and sludge foaming, comprising: and (3) irradiating the surface of the wastewater with ultraviolet rays in a UV-C waveband.
Preferably, the ultraviolet light source is kept in the range of 0.3-1m away from the surface of the pool, and the power of the light source is 10-15W/m3Flow rate ofThe setting is performed.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention relates to a wastewater treatment device and method capable of inhibiting sludge bulking and sludge foaming. The self-cleaning component can clean the ultraviolet lamp to clear impurities such as sludge and sewage, and the reflecting cover reflects the ultraviolet ray into the reaction tank. Therefore, the problems of sludge expansion and sludge foam are well solved by the arrangement of the ultraviolet lamp.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic view showing the construction of a wastewater treatment apparatus capable of suppressing sludge bulking and sludge foaming according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the UV lamp of FIG. 1;
wherein the reference numerals are as follows:
1. an ultraviolet lamp;
2. a lifting assembly;
3. a self-cleaning assembly;
4. a power conditioning assembly;
5. a reflector;
6. an aeration assembly;
7. and (4) a reaction tank.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in figure 1, the wastewater treatment device capable of inhibiting sludge bulking and sludge foaming comprises a reaction tank 7, and an aeration component 6 is arranged at the bottom of the reaction tank 7. An ultraviolet lamp 1 is arranged above the reaction tank 7. The ultraviolet lamps 1 are arranged in a plurality and laid above the water surface of the reaction tank 7. The ultraviolet lamp 1 is connected on the lifting component 2, and the lifting of the ultraviolet lamp 1 is realized through the lifting component 2. The lifting assembly 2 can comprise pulleys, and synchronous lifting of all the ultraviolet lamps 1 is realized through the cooperation of the pulleys. The ultraviolet lamp 1 is kept to be 0.3-1m away from the pool surface as far as possible. The lifting assembly 2 may be adjusted manually or automatically in real time based on the fluid level (e.g., installing a level gauge).
And a self-cleaning assembly 3. referring to fig. 2, the self-cleaning assembly 3 includes a tap water spray head mounted on the periphery of the ultraviolet lamp 1. Because some sludge or vapor can be generated in the aeration process and attached to the ultraviolet lamp tubes, the ultraviolet lamp tubes need to be cleaned by the self-cleaning components 3 of the lamp tubes, and the high-efficiency penetrability and the continuity of the light are ensured.
Referring to fig. 2, a reflective cover 5 is disposed above the uv lamp 1 to reflect the uv lamp into a reaction tank 7. The surface of the reflector 5 is coated with a magnesium oxide coating.
As shown in fig. 1, a power adjusting assembly 4 is further included for adjusting the light intensity of the uv lamp 1.
This example is aThe ultraviolet lamp 1 is an ultraviolet lamp tube of UV-C wave band (200-280 nm). The power of the lamp tube is 10-15W/m3The flow rate of the lamp tube is set, the lamp tube can adopt a medium-pressure lamp tube, and the linear emission intensity of the lamp tube is 10-15W (UV-C)/cm.
The inventor researches and discovers that the most main factors causing the sludge bulking or the sludge foaming are the sludge bulking or the sludge foaming due to the fact that filamentous bacteria in the sludge become dominant bacteria and the sludge bulking or the sludge foaming is caused due to the characteristics of the filamentous bacteria.
If filamentous fungi are to be inhibited, two methods are mainly used, one is to adjust process operation parameters, such as adjusting parameters of sludge reflux, water inflow, DO, pH and the like, and the other is to kill filamentous fungi by a sterilization means. However, both of these countermeasures are difficult to realize, mainly because of the following reasons: firstly, if a process parameter adjusting means is adopted, the main principle is that filamentous fungi are changed from dominant strains to suboptimal strains by adjusting parameters, so that sludge bulking or sludge foaming phenomena disappear, but the process is relatively slow and cannot immediately take effect, so that great pressure is generated on the standard operation of a system in the adjusting process; secondly, if the method of chemical sterilization treatment is adopted, the chemical sterilization can kill not only the filamentous fungi but also some non-filamentous fungi zoogles, which can cause most of the bacteria in the sludge to be killed, thereby affecting the treatment efficiency. Therefore, it is urgently required to develop a new process to cope with the problems of sludge bulking and sludge foaming.
The embodiment adopts the ultraviolet sterilization technology to inhibit the growth of filamentous bacteria, thereby solving the problems of sludge bulking and sludge foaming. The main use principle of the device comprises the following points: firstly, the filamentous fungi have larger specific surface area than that of non-filamentous fungi, and are easier to contact with some external conditions, which is also a reason that the filamentous fungi are more competitive than the non-filamentous fungi and is also a main factor causing sludge bulking or difficult sludge foam adjustment, but the specific surface area is also a characteristic mainly utilized by the patent; secondly, since the filamentous fungi have a larger specific surface, they are more exposed to external ultraviolet rays, resulting in being more capable of being killed; thirdly, ultraviolet sterilization has broad spectrum, and bacteria can only contact with a light receiving surface, so that the larger the light receiving surface is, the more the energy of ultraviolet rays contacted with the light receiving surface is, the more easily the DNA or RNA of the bacteria is damaged, the bacteria cannot be copied, and the final death of the bacteria is caused, so that the ultraviolet rays have more killing performance on filamentous bacteria; fourthly, the ultraviolet ray has certain killing performance on the non-filamentous fungi, but the death number or the probability of the non-filamentous fungi is far less than that of the filamentous fungi due to the small specific surface area; fifthly, the intensity of ultraviolet rays is adjusted by adjusting the distance between the lamp source and the pool surface, and finally the sterilization intensity is adjusted.
The ultraviolet lamp of this example, system when beginning, the system supplies power to the ultraviolet lamp, launches the ultraviolet ray, under the effect of bowl 5, the ultraviolet ray is all reflected to the pond face is gone, and pierce through the shallow layer of pond face, make the filamentous fungus that the surface area is big absorb the ultraviolet ray more easily, make filamentous fungus killed, simultaneously because the aeration tank is in the aeration state, therefore mud in the pond is in the state of constantly moving about, lead to the shallow layer mud of pond face to constantly update, finally lead to pond face mud microorganism to constantly update, if under the more condition of filamentous fungus, then realized the reduction of filamentous fungus total amount.
When the system works, under the condition that the aeration tank system runs stably, the ultraviolet lamp 1 can be started irregularly to avoid long-term sterilization and generate adverse effects on non-filamentous bacteria, so that the filamentous bacteria in the tank can be detected regularly in the running process of the whole system to determine the starting time and the interval time of the ultraviolet lamp 1.
Due to the application of the technology, the total amount of filamentous bacteria in the aeration tank is controlled, the sludge bulking and sludge foaming phenomena can be prevented for a long time, and the adverse effects of sludge bulking, sludge foaming and the like caused by the filamentous bacteria can be rapidly eliminated in a short time.
The advantages or beneficial effects are: (1) innovating the inhibition of sludge and sludge bulking and sludge foaming in a concept, and providing a new solution and a high-efficiency solution for the treatment of the problems of sludge bulking and sludge foaming; (2) the device has the characteristics of high efficiency, simplicity and convenience, and can better ensure the high efficiency and persistence of the aerobic system flora; (3) the device can greatly save the time for adjusting the process of generating sludge expansion or sludge foam, and can reduce the pressure of sewage operation; (4) the filamentous fungi are more bactericidal, so that the biological bactericidal agent has certain prevention on sludge expansion and sludge foam generation to a certain extent.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (8)
1. A wastewater treatment apparatus capable of suppressing sludge bulking and sludge foaming, comprising:
a reaction tank (7);
the ultraviolet lamp (1), the ultraviolet lamp (1) is arranged above the reaction tank (7);
a self-cleaning assembly (3), the self-cleaning assembly (3) comprising a tap water spray head mounted on the periphery of the ultraviolet lamp (1);
the reflector (5) is arranged above the ultraviolet lamp (1).
2. The wastewater treatment apparatus according to claim 1, wherein the wastewater treatment apparatus is characterized in that: the ultraviolet lamp lifting device further comprises a lifting assembly (2), and the lifting assembly (2) is used for lifting the ultraviolet lamp (1).
3. The wastewater treatment apparatus according to claim 2, wherein the wastewater treatment apparatus is characterized in that: the lifting assembly (2) comprises a pulley.
4. The wastewater treatment apparatus according to claim 1, wherein the wastewater treatment apparatus is characterized in that: the ultraviolet lamp is characterized by further comprising a power adjusting component (4), wherein the power adjusting component (4) is used for adjusting the light intensity of the ultraviolet lamp (1).
5. The wastewater treatment apparatus according to claim 1, wherein the wastewater treatment apparatus is characterized in that: the ultraviolet lamp (1) is an ultraviolet lamp tube with a UV-C waveband.
6. The wastewater treatment apparatus according to claim 1, wherein the wastewater treatment apparatus is characterized in that: the surface of the reflector (5) is coated with a magnesium oxide coating.
7. A method for treating wastewater capable of suppressing sludge bulking and sludge foaming, comprising: and (3) irradiating the surface of the wastewater with ultraviolet rays in a UV-C waveband.
8. The method for wastewater treatment capable of suppressing sludge bulking and sludge foaming according to claim 7, wherein: keeping the ultraviolet light source within 0.3-1m of the pool surface, and adopting the light source power of 10-15W/m3Is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110120490.9A CN112850845A (en) | 2021-01-28 | 2021-01-28 | Wastewater treatment device and method capable of inhibiting sludge bulking and sludge foaming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110120490.9A CN112850845A (en) | 2021-01-28 | 2021-01-28 | Wastewater treatment device and method capable of inhibiting sludge bulking and sludge foaming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112850845A true CN112850845A (en) | 2021-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110120490.9A Pending CN112850845A (en) | 2021-01-28 | 2021-01-28 | Wastewater treatment device and method capable of inhibiting sludge bulking and sludge foaming |
Country Status (1)
| Country | Link |
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| CN (1) | CN112850845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116768375A (en) * | 2023-08-16 | 2023-09-19 | 郑州市郑东新区水务有限公司 | Foam filamentous fungus cleaning device on surface of biological pond |
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|---|---|---|---|---|
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| JP2005230589A (en) * | 2004-02-17 | 2005-09-02 | Kurita Water Ind Ltd | Suppression method for foaming scum |
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| CN101580309A (en) * | 2005-04-21 | 2009-11-18 | 揖斐电株式会社 | Method of treating wastewater containing organic compound |
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| CN104591378A (en) * | 2015-02-13 | 2015-05-06 | 南京大学 | Biochemical sludge swelling control system and control method thereof |
| CN109689199A (en) * | 2017-01-31 | 2019-04-26 | 旭化成株式会社 | Ultraviolet light irradiation module unit and ultraviolet light irradiation module |
| CN210825787U (en) * | 2019-09-24 | 2020-06-23 | 武汉联宇技术股份有限公司 | Ultraviolet disinfection water tank |
-
2021
- 2021-01-28 CN CN202110120490.9A patent/CN112850845A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04161295A (en) * | 1990-10-25 | 1992-06-04 | Mitsubishi Kasei Polytec Co | Abnormal phenomenon-preventing agent of activated sludge and method for preventing abnormal phenomenon of activated sludge |
| JPH06262167A (en) * | 1993-03-09 | 1994-09-20 | Hitachi Kiden Kogyo Ltd | Treatment of scum water |
| JP2005230589A (en) * | 2004-02-17 | 2005-09-02 | Kurita Water Ind Ltd | Suppression method for foaming scum |
| CN101580309A (en) * | 2005-04-21 | 2009-11-18 | 揖斐电株式会社 | Method of treating wastewater containing organic compound |
| JP2008264772A (en) * | 2007-03-27 | 2008-11-06 | Asahi Kasei Chemicals Corp | Membrane separation activated sludge apparatus and treatment method of organic substance-containing water |
| CN102014608A (en) * | 2008-04-24 | 2011-04-13 | 松下电工株式会社 | Illuminating device for control of plant diseases |
| WO2010115319A1 (en) * | 2009-04-09 | 2010-10-14 | 北京汉青天朗水处理科技有限公司 | Sewage treatment process and system |
| CN103241914A (en) * | 2013-05-23 | 2013-08-14 | 北京工业大学 | Method for effectively controlling sludge bulking caused by chlorine resistant filamentous bacteria |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116768375A (en) * | 2023-08-16 | 2023-09-19 | 郑州市郑东新区水务有限公司 | Foam filamentous fungus cleaning device on surface of biological pond |
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Application publication date: 20210528 |