CN217921618U - Device for reducing and removing biological film on surface of filler in sewage treatment device - Google Patents
Device for reducing and removing biological film on surface of filler in sewage treatment device Download PDFInfo
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- CN217921618U CN217921618U CN202222353992.9U CN202222353992U CN217921618U CN 217921618 U CN217921618 U CN 217921618U CN 202222353992 U CN202222353992 U CN 202222353992U CN 217921618 U CN217921618 U CN 217921618U
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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
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- 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
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Abstract
A device for reducing and removing a biofilm on the surface of a filler in a sewage treatment device comprises ultrasonic treatment components arranged at two sides of the sewage treatment device and used for treating the biofilm on the surface of the filler; the filtering component is arranged at one end of the water outlet of the sewage treatment device; the water quality on-line monitoring system is arranged behind the filtering component and is used for monitoring the water quality and the water flow of the water outlet in real time; the control module is connected to the ultrasonic treatment assembly, the filtering assembly and the water quality on-line monitoring system; the ultrasonic treatment assembly comprises an ultrasonic generator and an ultrasonic transducer electrically connected with the ultrasonic generator, the ultrasonic generator controls the ultrasonic transducer to generate a cavitation effect to enable the biofilm on the surface of the filler to be impacted and fall off, and the ultrasonic treatment assembly is arranged to realize efficient removal and separation of the biofilm on the surface of the filler under the premise of not influencing the performance of the sewage treatment device with the aid of the filtering assembly, so that the operation and maintenance costs of the sewage treatment device are reduced.
Description
Technical Field
The utility model relates to a device for reducing and clearing biological films on the surfaces of fillers in a sewage treatment device, which belongs to the field of sewage treatment devices.
Background
The rapid development of global industry and agriculture and the continuous acceleration of urbanization progress seriously damage the global environment, so that water resources are seriously deficient. In order to meet the water demand of the globally increasing population, more and more sewage treatment plants and sewage treatment processes are built and developed, and specifically include artificial wetlands, contact oxidation sewage treatment apparatuses, anaerobic treatment apparatuses, and the like. However, in the sewage treatment process which operates for a long time, the sewage of complicated composition causes physical clogging, chemical clogging and biological clogging of the sewage treatment apparatus.
Wherein the biological blockage is the main cause of blockage of the sewage treatment system. The biological blockage is mainly caused by microorganisms and extracellular polymers generated in the matrix layer. The extracellular polymer is a microbial metabolite mainly composed of polysaccharide, protein, nucleic acid, lipid and the like, can be combined with inorganic or organic filler particles in a sewage treatment device to form a viscous biofilm-shaped substance on the surface of the extracellular polymer, and has high adhesion. An appropriate amount of biofilm is beneficial to removing pollutants, but excessive biofilm can form more viscous substances on the surface of the filler, possibly reducing the porosity of the filler layer, and further influencing the treatment performance and the service life of the sewage treatment device. Therefore, the alleviation or elimination of the clogging caused by the biofilm is an urgent problem to be solved in the construction and operation of sewage treatment plants.
The traditional biological blockage prevention and repair technology for sewage treatment devices comprises physicochemical pretreatment methods such as adding a flocculating agent or optimizing the water inlet load and the filler ratio, or biological pretreatment methods such as biological flocculation, physical contact oxidation and microbial fuel cells, however, the pretreatment methods do not fundamentally solve the problem of biological blockage, and the construction and operation costs of the sewage treatment devices and the occupied area of sewage treatment are increased. How to reduce the biofilm on the surface of the filler to the maximum extent on the premise of not influencing the treatment performance of the wetland and optimizing the cost is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects and shortcomings existing in the prior art and providing a device for reducing and removing a biological film on the surface of a filler in a sewage treatment device.
A device for reducing and removing a biofilm on the surface of a filler in a sewage treatment device comprises ultrasonic treatment components arranged at two sides of the sewage treatment device and used for treating the biofilm on the surface of the filler; the filtering component is arranged at one end of the water outlet of the sewage treatment device; the water quality on-line monitoring system is arranged behind the filtering component and is used for monitoring the water quality and the water flow of the water outlet in real time; the control module is connected to the ultrasonic treatment assembly, the filtering assembly and the water quality online monitoring system; the ultrasonic treatment subassembly includes supersonic generator and the ultrasonic transducer who is connected with the supersonic generator electricity, supersonic generator control ultrasonic transducer produces cavitation effect and makes the biomembrane on filler surface bump off, set up the ultrasonic treatment subassembly under the filter assembly is supplementary, can be under the prerequisite that does not influence sewage treatment plant performance, realize the high efficiency of filler surface biomembrane and clear away and the separation, reduce sewage treatment plant's operation and maintenance cost, and through the function of control module control whole device, make filter equipment cooperation ultrasonic treatment subassembly nimble carry out the separation filtration of biomembrane, the practicality of device has been increased.
Preferably, the number of the ultrasonic transducer is at least one, the ultrasonic transducer is a sandwich type piezoelectric transducer, the sandwich type piezoelectric transducer is the most common structural form, and the sandwich type piezoelectric transducer can generate various vibration deformation under the action of an external electric field and can generate strong ultrasonic radiation.
Furthermore, the ultrasonic transducer consists of a front cover plate, a piezoelectric ceramic piece, an insulating sleeve, a copper sheet electrode and a rear cover plate, and is fixed by a prestressed nut, a spring gasket and a prestressed bolt, wherein the piezoelectric ceramic piece consists of two independent piezoelectric ceramics subjected to axial polarization treatment, and is called as a crystal pile to provide vibration excitation for the transducer.
Preferably, the piezoelectric ceramic piece is lead titanate piezoelectric ceramic.
Furthermore, the frequency of the ultrasonic transducer is 20-100KW, and the frequency of the transducer can be adjusted according to the severity of the blockage.
Furthermore, the ultrasonic generator is of a separate-excitation type oscillating circuit structure, the ultrasonic amplifying circuit comprises a linear amplifying circuit and a switching power supply circuit, and the output power of the ultrasonic amplifying circuit is increased by more than 10% compared with that of the separate-excitation type oscillating circuit structure. The ultrasonic amplifying circuit adopts a linear amplifying circuit and a switching power supply circuit, and has the advantages of high conversion efficiency, no strict requirement on circuit matching, continuous and rapid change of working frequency and the like. Different operating frequencies can therefore be selected for the severity of the blockage.
Further, the filter assembly comprises a liftable stand and a filter screen group arranged on the liftable stand, the filter screen group comprises a protective layer, a blocking filter layer and a strength support layer, the specific size of the filter screen group can be designed and adjusted according to the size of the water outlet of the sewage treatment device, the protective layer is used for blocking gravels or impurities with larger particles, the size of the filter screen group is larger, the blocking filter layer can be formed by a single-layer or multi-layer expansion filter screen, the strength support layer is formed by a stainless steel frame, and the filter screen group is mainly used for preventing the filter layer from being deformed and damaged.
Preferably, the blocking and filtering layer comprises a single-layer or multi-layer expanded filter screen, and the filter screen groups are arranged by the filter screens with different pore sizes and densities in the order from coarse to fine, so that the flow direction is changed for many times when water flows pass through, and the separation efficiency of the blocked biological membrane is increased.
Preferably, the filter screen is made of stainless steel, high molecular organic matter, cotton cloth or other materials, and can be combined and matched according to different water qualities in the sewage treatment device.
Furthermore, the control module comprises a power equipment control circuit module and a remote monitoring system, the remote monitoring system is used for monitoring the running state of each component in real time, alarming is carried out when a certain component breaks down, fault maintenance is timely carried out in a prompting mode, the power equipment control circuit module can control the ascending and descending of a liftable rack in the filtering component, and the ultrasonic processing component is started and closed.
The beneficial effects of the utility model are as follows: set up the ultrasonic treatment subassembly under the filter assembly is supplementary, can realize filling the high efficiency of surperficial biomembrane and clear away and the separation under the prerequisite that does not influence sewage treatment plant performance, reduce sewage treatment plant's operation and maintenance cost to through the function of control module control whole device, make filter equipment cooperation ultrasonic treatment subassembly carry out the separation filtration of biomembrane in a flexible way, increased the practicality of device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
FIG. 1 is a schematic structural view of an ultrasonic cleaning device of the present invention;
fig. 2 is a schematic structural diagram of the transducer according to the present invention;
fig. 3 is a schematic structural view of a filter screen in the present invention;
FIG. 4 is a schematic flow chart of the present invention for surface flow subsurface wetland;
FIG. 5 is a schematic view of the flow process of the present invention for horizontal flow subsurface wetland;
fig. 6 is a schematic flow diagram of the vertical-flow subsurface wetland of the present invention.
In the figure, 1, a water inlet; 2. a sewage treatment device; 3. a water outlet; 4. an ultrasonic generator;
5. an ultrasonic transducer; 51. a front cover plate; 52. piezoelectric ceramic plates; 53. an insulating sleeve; 54. copper sheet electrodes; 55. a rear cover plate; 56. a pre-stressed nut and a spring washer; 57. a prestressed bolt; 6. a filter assembly; 61. a protective layer; 62. a barrier filter layer; 63. a strength support layer; 7. a water quality on-line monitoring system; 8. and a control module.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
As shown in FIGS. 1-3, an embodiment of a device for reducing and removing biofilm on the surface of filler in a sewage treatment device of the present invention comprises ultrasonic treatment components disposed at both sides of the sewage treatment device 2 for treating biofilm on the surface of the filler; the filtering component 6 is arranged at one end of the water outlet 3 of the sewage treatment device 2; the water quality on-line monitoring system 7 is arranged behind the filtering component 6 and is used for monitoring the water quality and the water flow of the water outlet 3 in real time; the control module 8 is connected to the ultrasonic treatment component, the filtering component 6 and the water quality on-line monitoring system 7; the ultrasonic treatment subassembly includes supersonic generator 4 and the ultrasonic transducer 5 of being connected with supersonic generator 4 electricity, supersonic generator 4 controls ultrasonic transducer 5 to produce cavitation effect and makes the biomembrane on filler surface bump off, set up the ultrasonic treatment subassembly under filter assembly 6 is supplementary, can be under the prerequisite that does not influence sewage treatment plant performance, realize the high efficiency of filler surface biomembrane and clear away and the separation, reduce sewage treatment plant's operation and maintenance cost, and through the function of control module 8 control whole device, make filter equipment cooperation ultrasonic treatment subassembly nimble the separation filtration that carries out the biomembrane, the practicality of device has been increased.
The number of the ultrasonic transducers 5 is at least one, and the ultrasonic transducers 5 are sandwich type piezoelectric transducers which are the most common structural forms, can generate various vibration deformation under the action of an external electric field and can generate strong ultrasonic radiation. The ultrasonic transducer 5 is composed of a front cover plate 51, a piezoelectric ceramic piece 52, an insulating sleeve 53, a copper sheet electrode 54 and a rear cover plate 55, and is fixed by a prestressed nut, a spring gasket and a prestressed bolt 57, wherein the piezoelectric ceramic piece 52 is composed of two independent piezoelectric ceramics subjected to axial polarization treatment, and is called as a crystal stack to provide vibration excitation for the transducer. The piezoelectric ceramic sheet 52 is a lead titanate piezoelectric ceramic. The frequency of the ultrasonic transducer 5 is 20-100KW, which can be adjusted according to the severity of the occlusion.
The front cover plate 51 can be made of magnesium-aluminum alloy with relatively low density and high sound velocity, and the end face of the rear cover plate 55, which is in contact with the prestressed nut, is designed with a boss, so that the contact quality can be improved. The back cover 55 may be made of a relatively dense steel material and may have a hole along the center of its axis for passing the pre-stressed bolt 57, which minimizes the energy radiation from the end face of the back cover 55. The copper sheet electrode 54 is used for applying an alternating electric field on the piezoelectric body, and the electrode plate is connected with an ultrasonic generator through a lead wire, the size of the electrode plate is basically the same as that of the piezoelectric ceramic sheet 52, and the thickness of the electrode plate is 0.5mm.
The ultrasonic generator 4 is of a separate-excitation type oscillating circuit structure, and the ultrasonic amplifying circuit comprises a linear amplifying circuit and a switching power supply circuit, and the output power is increased by more than 10% compared with the self-excitation type oscillating circuit structure. The ultrasonic amplifying circuit adopts a linear amplifying circuit and a switching power supply circuit, and has the advantages of high conversion efficiency, no strict requirement on circuit matching, continuous and rapid change of working frequency and the like. Different operating frequencies can therefore be selected for the severity of the blockage.
The remote monitoring system can be connected in communication modes such as 5G, ethernet or Wifi, a VPN over P2P technology is adopted, an RSA encryption algorithm is combined, communication safety is guaranteed, the power equipment control circuit module adopts the PLC control module 8 to control the water outlet valve, the ultrasonic generator 4 and the filtering component 6, and opening and closing are controlled in combination with actual sewage conditions in the sewage treatment device 2. The communication mode and the PLC controller adopted in the remote monitoring system are mature technologies in the market, are applied to multiple fields, are easy to obtain and use, and are not described repeatedly.
As shown in figures 1-3, the embodiment of the device for reducing and removing biofilm on the surface of filler in a sewage treatment device of the present invention comprises ultrasonic treatment components arranged at two sides of the sewage treatment device 2 for treating biofilm on the surface of the filler; the filtering component 6 is arranged at one end of the water outlet 3 of the sewage treatment device 2; the water quality on-line monitoring system 7 is arranged behind the filtering component 6 and is used for monitoring the water quality and the water flow of the water outlet 3 in real time; the control module 8 is connected to the ultrasonic treatment component, the filtering component 6 and the water quality on-line monitoring system 7; the ultrasonic treatment subassembly includes supersonic generator 4 and the ultrasonic transducer 5 of being connected with supersonic generator 4 electricity, supersonic generator 4 controls ultrasonic transducer 5 to produce cavitation effect and makes the biomembrane on filler surface bump off, set up the ultrasonic treatment subassembly under filter assembly 6 is supplementary, can be under the prerequisite that does not influence sewage treatment plant performance, realize the high efficiency of filler surface biomembrane and clear away and the separation, reduce sewage treatment plant's operation and maintenance cost, and through the function of control module 8 control whole device, make filter equipment cooperation ultrasonic treatment subassembly nimble the separation filtration that carries out the biomembrane, the practicality of device has been increased.
Different from the above embodiments, referring to fig. 1-3, the filter assembly 6 in this embodiment includes a liftable rack and a filter screen set disposed on the liftable rack, the filter screen set includes a protective layer 61, a blocking filter layer 62 and a strength support layer 63, the specific size of the filter screen set can be designed and adjusted according to the size of the water outlet 3 of the sewage treatment apparatus 2, the protective layer 61 is used for blocking larger particles of gravel or impurities, etc., and has a larger size with 10 meshes; the barrier filter layer 62 may be composed of a single or multiple layers of expanded filter mesh, and the strength support layer 63 is composed of a stainless steel frame, and mainly functions to prevent deformation and damage of the filter layer. The blocking and filtering layer 62 comprises a single-layer or multi-layer expanded filter screen, and the filter screen groups are arranged by the filter screens with different apertures and densities in the order from coarse to fine, so that the flowing direction is changed for many times when water flows pass through, and the removal efficiency of the blocked biological membrane is increased. The material of filter screen is stainless steel, polymer organic matter, cotton or other materials, can make up the collocation according to the different come of water quality in sewage treatment plant 2, and extracellular polymer that can the at utmost separates reduces the secondary pollution that ultrasonic cleaning brought.
The filter screen can also directly select a sintered metal filter screen which is composed of single-layer or multi-layer expanded stainless steel meshes, the mesh number is between 100 and 300 meshes, the metal filter screen has the characteristics of high filter precision, good reliability, stable process flow, high bearing strength, small operation pressure drop, corrosion resistance and suitability for back washing operation, and is a very ideal high-efficiency filter material, and the comprehensive properties of the filter screen are obviously superior to those of high-efficiency glass fiber filter paper and filter membrane materials.
The sewage treatment device 2 comprises an artificial wetland, a contact oxidation sewage treatment device, an anaerobic treatment device and the like, and is provided with a water inlet 1 and a water outlet 3, after the sewage treatment device 2 or the device runs for a long time, a biological film and microbial metabolites can be attached to the surface of a filler or a plant root system to form viscous sludge-like substances, and the porosity and the treatment performance of the sewage treatment device are reduced.
The water flow and the water quality condition of the water outlet 3 are regularly monitored by the water quality on-line monitoring system 7, after the water quality and the water flow are monitored to be reduced to a certain value, information is transmitted to the control module 8, the control module 8 can control the power supply and the frequency of the ultrasonic generator 4, and the generated sound energy is converted into mechanical vibration by the transducer. Due to the radiation of ultrasonic waves, liquid microbubbles in the sewage treatment device 2 or the device can keep vibrating under the action of sound waves, so that the liquid continuously generates bubbles and simultaneously breaks the bubbles, and the strong impact force generated by the broken bubbles can impact the biofilm on the surface of the filler or the surface of the plant root system, namely, the cavitation effect. The fallen biofilm or other extracellular polymeric substances can flow out of the water outlet 3 along with the water flow, and the filtering component 6 can be lowered through a power equipment control circuit module in the control module 8 and is used for collecting the washed and removed biofilm or other blockage substances. Meanwhile, the water flow is further detected through the water quality online monitoring system 7, and when the water flow is low, the connected warning equipment is started to remind the filter assembly 6 of cleaning and replacing. The water quality indexes mainly detected by the water quality on-line monitoring system 7 comprise dissolved oxygen, COD (chemical oxygen demand), ammonia nitrogen and the like, and when the water quality or water flow of the water outlet 3 is not up to the standard, the ultrasonic generator 4 is started and the filtering component 6 is lowered at the same time, so that the synchronous removal and separation of the biological membrane are realized. Meanwhile, after the water quality of the water outlet 3 is monitored to be normal, the ultrasonic generator 4 is closed, and meanwhile the filtering device is lifted to discharge water normally.
When the biomembrane is subjected to ultrasonic cleaning in a surface flow subsurface wetland system, as shown in figures 1 and 4, a water body to be purified enters an ecological gravel bed 2 from a water inlet 1 and is then discharged through a water outlet 3, and after the operation for a long time, the biomembrane and microorganism metabolites can be attached to the surfaces of gravels and plant root systems to form viscous sludge-like substances, so that the porosity and the treatment performance of the artificial wetland are reduced. Use the utility model provides a device, utilize water quality on-line monitoring system 7 regular monitoring delivery port 3's discharge and the quality of water condition, after monitoring quality of water and discharge and reducing to certain numerical value, give control module 8 with information transfer, control module 8 opens supersonic generator 4 and ultrasonic transducer 5, adjust supersonic generator 4 power and the frequency of matching, the acoustic energy of production converts mechanical vibration into through the transducer again, owing to receive the ultrasonic radiation, liquid microbubble in the ecological gravel bed can be under the effect of sound wave and keep vibrating, it makes adnexed biomembrane drop to produce cavitation effect, the biomembrane that drops or other extracellular polymeric substances can flow along with rivers, power equipment control circuit module through control module 8 drops filter assembly 6 and filters, and quality of water on-line monitoring system 7 detects, quality of water is up to standard after, filter assembly 6 rises, normal play water, and detect the discharge after filter assembly 6 filters, when lower discharge, start-up device, remind the washing of filter screen and the work of change.
The same principle can also be applied to a horizontal flow subsurface wetland system, as shown in fig. 1 and 5, and the water body to be purified enters the ecological gravel bed 2 from the water inlet 1 and then is discharged through the water outlet 31. After the water quality detection module 7 detects that the sewage needs to be cleared and filtered, the control module 8 controls the on-off of the water outlets 31 and 32, the water outlet 32 is opened while the water outlet 31 is closed, the sewage is discharged and separated through the water outlet 32 after being purified and filtered by the ultrasonic generator 4, the ultrasonic transducer 5 and the filtering component 6, the quantity and the scale of the ultrasonic transducers 5 can be adjusted according to the actual wetland scale, and the sewage can be better purified by generating a cavitation effect from bottom to top when being placed at the bottom of the wetland.
The device can be further applied to a vertical flow subsurface wetland system, and as shown in fig. 1 and fig. 6, a water body to be purified enters an ecological gravel bed 2 from a water inlet 1 and then is discharged through a water outlet 3. After the water quality detection module 7 detects that the water needs to be removed and filtered, the control module 8 controls the switch of the water outlet 3, the water is purified and filtered by the ultrasonic generator 4, the ultrasonic transducers 5 and the filtering assembly 6 and then is discharged and separated through the water outlet 3, the number and the scale of the ultrasonic transducers 5 can be adjusted according to the actual scale of the wetland, and the water is placed on the side part of the wetland to be more favorable for filtering and separating a biological membrane and an extracellular polymeric substance.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
While the invention has been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the specific embodiments disclosed. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. The utility model provides a device that is arranged in sewage treatment plant filler surface biomembrane to cut down and clears away which characterized in that: comprises ultrasonic treatment components arranged at two sides of a sewage treatment device and is used for treating a biological film on the surface of a filler; the filtering component is arranged at one end of the water outlet of the sewage treatment device; the water quality on-line monitoring system is arranged behind the filtering component and is used for monitoring the water quality and the water flow of the water outlet in real time; the control module is connected to the ultrasonic treatment assembly, the filtering assembly and the water quality on-line monitoring system; the ultrasonic treatment assembly comprises an ultrasonic generator and an ultrasonic transducer electrically connected with the ultrasonic generator, and the ultrasonic generator controls the ultrasonic transducer to generate a cavitation effect so that the biofilm on the surface of the filler is knocked off.
2. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 1, wherein: the number of the ultrasonic transducers is at least one, and the ultrasonic transducers are sandwich piezoelectric transducers.
3. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 2, wherein: the ultrasonic transducer consists of a front cover plate, a piezoelectric ceramic piece, an insulating sleeve, a copper sheet electrode and a rear cover plate, and is fixed through a prestressed nut, a spring gasket and a prestressed bolt.
4. The apparatus for biofilm reduction and removal on the surface of a packing in a wastewater treatment plant of claim 3, wherein: the piezoelectric ceramic piece is lead titanate piezoelectric ceramic.
5. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of any of claims 1 to 3, wherein: the frequency of the ultrasonic transducer is 20-100KW.
6. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 1, wherein: the ultrasonic generator is of a separate-excited oscillation circuit structure, and the ultrasonic amplifying circuit comprises a linear amplifying circuit and a switching power supply circuit.
7. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 1, wherein: the filter assembly comprises a liftable stand and a filter screen group arranged on the liftable stand, and the filter screen group consists of a protective layer, a blocking filter layer and a strength support layer.
8. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 7, wherein: the blocking and filtering layer comprises a single-layer or multi-layer expanded filter screen, and the filter screen groups are arranged by the filter screens with different apertures and densities in the order from coarse to fine.
9. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 8, wherein: the filter screen is made of stainless steel, high molecular organic matters, cotton cloth or other materials.
10. The apparatus for biofilm reduction and removal on the surface of packing in a wastewater treatment plant of claim 1, wherein: the control module comprises a power equipment control circuit module and a remote monitoring system, and the remote monitoring system is used for monitoring the running state of each component in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222353992.9U CN217921618U (en) | 2022-09-05 | 2022-09-05 | Device for reducing and removing biological film on surface of filler in sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222353992.9U CN217921618U (en) | 2022-09-05 | 2022-09-05 | Device for reducing and removing biological film on surface of filler in sewage treatment device |
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| CN217921618U true CN217921618U (en) | 2022-11-29 |
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| CN202222353992.9U Active CN217921618U (en) | 2022-09-05 | 2022-09-05 | Device for reducing and removing biological film on surface of filler in sewage treatment device |
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2022
- 2022-09-05 CN CN202222353992.9U patent/CN217921618U/en active Active
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