Coal-containing wastewater system based on electronic flocculation

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a coal-containing wastewater system based on electronic flocculation, comprising: a wastewater treatment part for purifying coal-containing wastewater, the treatment process comprising precipitation, flocculation, centrifugation and filtration; the pipeline part is used for connecting two adjacent treatment processes and forming a passage, so that the wastewater can conveniently circulate in the two adjacent treatment processes; the solvent filling part is used for supplementing a solvent in the precipitation process when ash coal or lignite wastewater is treated; the water pumping anti-blocking part is mounted at the end part of the pipeline part and is used for filtering and preventing blocking during water pumping; the coal powder in the coal-containing wastewater can be quickly precipitated to meet the wastewater treatment requirement, and the problem that the water quality is slightly yellow or slightly black after traditional treatment is solved; the back-flushing pipeline assembly performs back-flushing on the multi-medium filter by means of supernate in the middle transition pool, manual disassembly and cleaning are not needed, the advantages of rapidness and high efficiency are achieved, and meanwhile the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a coal-containing wastewater system based on electronic flocculation. Background Art

[0002] The electronic flocculation coal-containing wastewater system is based on the electronic flocculator. When the sewage passes through the electronic flocculator plate, flocculation occurs, thereby purifying the coal-containing wastewater.

[0003] Before and after the flocculation treatment, sedimentation and filtration are required. Multi-media filters are generally used for filtration. However, the filter will become clogged after long-term filtration, which will affect the filtration rate due to the flow rate. Therefore, it needs to be cleaned regularly. Traditional disassembly and cleaning is troublesome and has high maintenance costs.

[0004] At the same time, when treating gray coal or lignite wastewater, because it contains a large amount of natural pigments or pollutants, these substances are not easy to be removed during the treatment process, which causes the treated water to be yellow or black, so the expected purification effect cannot be achieved. Summary of the invention

[0005] In view of the above-mentioned problems existing in the existing coal-containing wastewater system based on electronic flocculation, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a coal-containing wastewater system based on electronic flocculation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a coal-containing wastewater system based on electronic flocculation, comprising:

[0008] The wastewater treatment part is used to purify the coal-containing wastewater, and its treatment process includes sedimentation, flocculation, centrifugation and filtration;

[0009] The pipeline part is used to connect two adjacent treatment processes and form a passage to facilitate the flow of wastewater between the two adjacent treatment processes;

[0010] The solvent filling part is used to add solvent to the precipitation process when treating gray coal or lignite wastewater;

[0011] The pumping anti-blocking part is installed at the end of the pipeline part to filter and prevent blockage when pumping water.

[0012] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the wastewater treatment part includes a sedimentation tank, an electronic flocculator, a centrifugal sedimentation tank, an intermediate transition tank, a multi-media filter and a clean water reuse tank in sequence.

[0013] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the pipeline part includes a water pipe assembly and a backwash pipe assembly. The water pipe assembly connects and connects the sedimentation tank, electronic flocculator, centrifugal sedimentator, intermediate transition tank, multi-media filter and clean water reuse tank in series in sequence. The backwash pipe assembly is connected to the multi-media filter to backwash the multi-media filter with the help of the supernatant in the intermediate transition tank.

[0014] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the solvent filling part includes a solvent tank and a uniform stirring component, the solvent tank and the uniform stirring component are connected through a solvent pipe 1, which is used to transport the solvent in the solvent tank to the uniform stirring component, the liquid outlet end of the uniform stirring component is connected to a solvent pipe 2, and the liquid outlet end of the solvent pipe 2 extends to the sedimentation tank, which is used to transport the solvent in the uniform stirring component to the sedimentation tank.

[0015] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, a protective component is installed on the top of the solvent tube 2, and the protective component is used to play a role of shading and ventilation.

[0016] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the protective component includes a fixed sleeve, an outer protective plate is arranged above the fixed sleeve, a plurality of partitions are arranged between the fixed sleeve and the outer protective plate, and a ventilation cavity is formed by the gap between two adjacent partitions and the fixed sleeve and the outer protective plate.

[0017] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the uniform stirring assembly includes a cylinder, a motor is installed on the top of the cylinder, and a stirring rod is arranged inside the cylinder, and the stirring rod and the motor are driven by a linkage.

[0018] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the linkage part includes a rotating disk, a toothed disk is arranged above the rotating disk, and a gear one is equidistantly connected to the top of the rotating disk, a gear two is arranged at the bottom of the rotating disk at a position corresponding to the gear one, a gear three is meshed with one side of the gear two, and an eccentric rod connected to the stirring rod is fixedly connected to the bottom of the gear three.

[0019] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the water pumping and anti-blocking part includes a through pipe, a scraper is fixed at the bottom of the through pipe, and a filter disc is arranged on the inner side of the through pipe, and the filter disc is driven to rotate by a driving assembly to form a scraping effect with the scraper.

[0020] As a preferred solution of the coal-containing wastewater system based on electronic flocculation described in the present invention, the driving assembly includes a bracket fixed in the through pipe and a ring fixed at the axis of the filter disc, a telescopic rod is installed at the axis of the bracket, the telescopic end of the telescopic rod vertically downward passes through the ring, and a conversion piece is passed between the telescopic end of the telescopic rod and the inner side of the ring, and the conversion piece is used to convert linear motion into rotational motion and act on the filter disc.

[0021] Beneficial effects of the present invention: In the present invention, polyaluminium chloride solvent is added before electronic flocculation. When the solvent is used to treat grey coal or brown powder wastewater, it reacts quickly in the centrifugal precipitator to help the coal powder in the coal-containing wastewater to precipitate quickly, so as to meet the requirements for wastewater treatment and solve the problem that the water quality is yellowish or blackish after traditional treatment.

[0022] The backwash pipeline assembly uses the supernatant in the intermediate transition tank to backwash the multi-media filter, without the need for manual disassembly and cleaning. It has the advantages of being fast and efficient, while reducing maintenance costs;

[0023] The protective component in the solvent filling part can provide shade and ventilation for the solvent tank, preventing direct sunlight from causing the solvent temperature to rise and affecting the treatment effect. At the same time, it cooperates with the stirring component to achieve uniformity of the agent and effectively improve the solvent cleaning effect. The stirring component adopts the action of revolution and eccentric rotation to maximize the stirring area and improve the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 It is a schematic diagram of the overall structure of the coal-containing wastewater system based on electronic flocculation of the present invention.

[0026] Figure 2 It is a schematic structural diagram of the wastewater treatment part in the coal-containing wastewater system based on electronic flocculation of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the pipeline part in the coal-containing wastewater system based on electronic flocculation of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the solvent filling part in the coal-containing wastewater system based on electronic flocculation of the present invention.

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0030] Figure 6 It is a schematic diagram of the structure of the homogenizing component in the coal-containing wastewater system based on electronic flocculation of the present invention.

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0032] Figure 8 It is a schematic diagram of the structure of the pumping and anti-blocking part in the coal-containing wastewater system based on electronic flocculation of the present invention.

[0033] Fig. 9 It is a schematic cross-sectional structural diagram of the pumping and anti-blocking part of the coal-containing wastewater system based on electronic flocculation of the present invention. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Example 1

[0039] Reference Figure 1-3 , a coal-containing wastewater system based on electronic flocculation, comprising:

[0040] The wastewater treatment part 100 is used to purify the coal-containing wastewater, and the treatment process includes sedimentation, flocculation, centrifugation and filtration;

[0041] The pipeline part 200 is used to connect two adjacent treatment processes and form a passage to facilitate the flow of wastewater in the two adjacent treatment processes.

[0042] Furthermore, the wastewater treatment part 100 includes a sedimentation tank 101, an electronic flocculator 102, a centrifugal sedimentation tank 103, an intermediate transition tank 104, a multi-media filter 105 and a clean water reuse tank 106 in sequence.

[0043] Furthermore, the pipeline part 200 includes a water pipe assembly 201 and a backwash pipe assembly 202. The water pipe assembly 201 connects and connects the sedimentation tank 101, the electronic flocculator 102, the centrifugal sedimentator 103, the intermediate transition tank 104, the multi-media filter 105 and the clean water reuse tank 106 in series in sequence. The backwash pipe assembly 202 is connected to the multi-media filter 105 and is used to backwash the multi-media filter 105 with the help of the supernatant in the intermediate transition tank 104.

[0044] Specifically, the water delivery pipe assembly 201 includes a coal wastewater delivery pipe 201a, a water pumping pipe 1 201b, a water pumping pipe 201c, a sewage pipe 201d, a three-way valve 201e and a terminal pipe 201f. The coal wastewater delivery pipe 201a is used to deliver the coal wastewater to the sedimentation tank 101. After sedimentation, the coal powder sediment is separated from the supernatant. The supernatant is extracted through the water pumping pipe 1 201b and delivered to the electronic flocculator 102 for flocculation. After flocculation, the supernatant is delivered to the centrifugal sedimentator 103. The centrifugal sedimentator The sewage outlets at the bottom of 103 and the bottom of the electronic flocculator 102 are connected to the sewage pipe 201d, and the mixture of impurities and water is discharged back to the sedimentation tank 101 through the sewage pipe 201d to be precipitated again. The supernatant in the centrifugal sedimentation tank 103 is transported to the intermediate transition tank 104. The pumping pipe 201c extracts the supernatant in the intermediate transition tank 104 and transports it to the multi-media filter 105 for filtration through the three-way valve 201e. The filtered liquid is transported to the clean water reuse tank 106 through the terminal pipe 201f;

[0045] The backwash pipe assembly 202 includes a connecting pipe 202a, a branch pipe 202b and a return pipe 202c. The connecting pipe 202a connects the pumping pipe 201c and the terminal pipe 201f. A valve 1 is installed on the pumping pipe 201c. The two ends of the terminal pipe 201f are respectively installed with valves 2 and 3. When valve 1 is closed, valve 2 is opened and valve 3 is closed, water will not pass through the valve on the terminal pipe 201f, and water will enter from the top of the multi-media filter 105 through the three-way valve 201e. Water will enter the terminal pipe 201f through the connecting pipe 202a and enter the backwash from the bottom of the multimedia filter 105. The backwash will discharge the dirt in the multimedia filter 105 from top to top. The discharged dirt will be transported to the sedimentation tank 101 through the three-way valve 201e, the branch pipe 202b and the return pipe 202c to be precipitated again. This structure uses the supernatant in the intermediate transition tank 104 to backwash the multimedia filter 105, without manual disassembly and cleaning, with the advantages of fast and efficient, while reducing maintenance costs.

[0046] Example 2

[0047] Reference Figure 4-7 This embodiment is different from the first embodiment in that the coal-containing wastewater system based on electronic flocculation in this embodiment further includes:

[0048] The solvent filling part 300 is used to add solvent to the precipitation process when treating gray coal or lignite wastewater;

[0049] Furthermore, the solvent filling part 300 includes a solvent tank 301 and a uniform stirring component 302. The solvent tank 301 and the uniform stirring component 302 are connected by a solvent pipe 1 303, which is used to transport the solvent in the solvent tank 301 to the uniform stirring component 302. The liquid outlet end of the uniform stirring component 302 is connected to a solvent pipe 2 304, and the liquid outlet end of the solvent pipe 2 304 extends into the sedimentation tank 101, which is used to transport the solvent in the uniform stirring component 302 to the sedimentation tank 101.

[0050] Specifically, the solvent pipe 1 303 and the solvent pipe 2 304 are both equipped with a liquid pump, which extracts the solvent in the solvent tank 301 and transports it to the stirring component 302, and the liquid pump on the solvent pipe 2 304 transports the solution in the stirring component 302 to the sedimentation tank 101;

[0051] The solvent used is polyaluminium chloride, which has good flocculation effect and good filterability. PAC has a strong electrical neutralization effect, and the hydrolysate has an excellent bridging adsorption effect on suspended matter in water, as well as a selective adsorption effect on soluble substances, thereby achieving rapid flocculation and sedimentation;

[0052] Furthermore, a protective component 305 is installed on the top of the second solvent tube 304, and the protective component 305 is used to play a role in shading and ventilation.

[0053] Furthermore, the protective component 305 includes a fixed sleeve 305a, an outer protective plate 305b is arranged above the fixed sleeve 305a, a plurality of partitions 305c are arranged between the fixed sleeve 305a and the outer protective plate 305b, and the gap between two adjacent partitions 305c and the fixed sleeve 305a and the outer protective plate 305b forms a ventilation cavity 305d.

[0054] Specifically, the outer protective plate 305b is an arc-shaped structure made of ABS, and a metal reflective film is bonded to the outer surface of the outer protective plate 305b to reflect sunlight and avoid the problem that the temperature of the solvent increases due to direct sunlight and affects the treatment effect.

[0055] Furthermore, the uniform stirring assembly 302 includes a cylinder 302a, a motor 302b is installed on the top of the cylinder 302a, and a stirring rod 302c is arranged inside the cylinder 302a, and the stirring rod 302c and the motor 302b are driven by a linkage 302d.

[0056] Furthermore, the linkage member 302d includes a rotating disk 302d-1, a toothed disk 302d-2 is arranged above the rotating disk 302d-1, and a gear 1 302d-3 is equidistantly connected to the rotating disk 302d-1, a gear 2 302d-4 is arranged at the bottom of the rotating disk 302d-1 at a position corresponding to the gear 1 302d-3, a gear 3 302d-5 is meshed with one side of the gear 2 302d-4, and an eccentric rod 302d-6 connected to the stirring rod 302c is fixedly connected to the bottom of the gear 302d-5.

[0057] Specifically, the toothed disc 302d-2 is fixed to the inner top of the cylinder 302a, the gear 1 302d-3 is meshed with the toothed disc 302d-2, and the central axis of the gear 1 302d-3 is fixed to the gear 2 302d-4, the central axis of the gear 1 302d-3 is rotatably connected to the rotating disk 302d-1, the gear 3 302d-5 is rotatably connected to the rotating disk 302d-1, and the gear 3 302d-5 is meshed with the gear 2 302d-4, the transmission end of the motor 302b passes through the toothed disc 302d-2 and is fixed to the axis of the rotating disk 302d-1, and the motor 302b operates with The rotating disk 302d-1 rotates. After the rotating disk 302d-1 rotates, the gear 1 302d-3 will rotate under the meshing action of the toothed disk 302d-2. The gear 1 302d-3 is coaxial with the gear 2 302d-4, so they will rotate synchronously. The gear 3 302d-5 is meshed with the gear 2 302d-4, so they will rotate. After the gear 3 302d-5 rotates, it will drive the eccentric rod 302d-6 to rotate. The stirring rod 302c installed at the bottom of one end of the eccentric rod 302d-6 will synchronously perform the actions of revolution and eccentric rotation, thereby maximizing the stirring area and improving the uniform stirring effect.

[0058] The rest of the structure is the same as that of Example 1.

[0059] Example 3

[0060] Reference Figure 8-9 , this embodiment is different from the above embodiment in that: the coal-containing wastewater system based on electronic flocculation in this embodiment also includes:

[0061] The pumping anti-blocking part 400 is installed at the end of the pipe part 200 to filter and prevent blockage when pumping water;

[0062] The water pumping and anti-blocking part 400 includes a through pipe 401 , a scraper 402 is fixed to the bottom of the through pipe 401 , and a filter disc 403 is arranged on the inner side of the through pipe 401 . The filter disc 403 is driven to rotate by a driving assembly 404 to form a scraping effect with the scraper 402 .

[0063] Specifically, one end of the through pipe 401 is installed at the end of the water pumping pipe 201b, and the bottom of the through pipe 401 extends to the inside of the sedimentation tank 101. The water pumping pipe 201b will generate negative pressure during operation to pump out the water in the sedimentation tank 101. Since there is a lot of coal dust inside the sedimentation tank 101, the coal dust can be blocked by the filter plate 403 during the extraction, which can achieve the effect of primary filtration on the one hand, and also avoid the problem of clogging of the pipeline part 200. When pumping liquid, the coal dust will be adsorbed on the surface of the filter plate 403. Excessive adsorption will affect the amount of water pumped. At this time, the filter plate 403 is driven to rotate by the driving component 404, so the coal dust adsorbed on the surface of the filter plate 403 is quickly removed under the action of the scraper 402, thereby increasing the amount of water pumped.

[0064] The scraper 402 is a "Y"-shaped structure. The "Y"-shaped scraper 402 divides the filter disc 403 into multiple areas. The coal dust is distributed in multiple areas. Therefore, when rotating, the coal dust adsorbed on the surface of the filter disc 403 can be quickly cleaned, effectively improving the cleaning effect.

[0065] Furthermore, the driving assembly 404 includes a bracket 404a fixed in the through pipe 401 and a ring 404b fixed at the axis of the filter disc 403. A telescopic rod 404c is installed at the axis of the bracket 404a. The telescopic end of the telescopic rod 404c vertically penetrates the ring 404b downward, and a conversion piece is passed between the telescopic end of the telescopic rod 404c and the inner side of the ring 404b. The conversion piece is used to convert linear motion into rotational motion and act on the filter disc 403.

[0066] Specifically, the conversion member includes a spiral groove 404d opened on the inner side of the collar 404b, and the telescopic end of the telescopic rod 404c is fixed with a protrusion 404e extending into the spiral groove 404d. Therefore, during cleaning, the telescopic rod 404c operates to make the telescopic end reciprocate linearly. When the telescopic end moves linearly, the protrusion 404e on the outer side thereof will push against the spiral groove 404d. After the spiral groove 404d is pushed, the force will be transmitted to the filter disc 403. After the filter disc 403 is forced to rotate under the force, the spiral groove 404d will also rotate, thereby converting the linear force into a rotational force to realize the rotational cleaning of the filter disc 403.

[0067] The rest of the structure is the same as that of Example 2.

[0068] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0070] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A coal-containing wastewater system based on electronic flocculation, characterized by: include: The wastewater treatment part (100) is used to purify the coal-containing wastewater, and the treatment process includes sedimentation, flocculation, centrifugation and filtration; The pipeline part (200) is used to connect two adjacent treatment processes and form a passage, so as to facilitate the flow of wastewater in the two adjacent treatment processes; The solvent filling part (300) is used to add solvent to the precipitation process when treating gray coal or lignite wastewater; The water pumping anti-blocking part (400) is installed at the end of the pipeline part (200) to filter and prevent blockage when pumping water.

2. The coal-containing wastewater system based on electronic flocculation according to claim 1, characterized in that: The wastewater treatment part (100) includes a sedimentation tank (101), an electronic flocculator (102), a centrifugal sedimentation tank (103), an intermediate transition tank (104), a multi-media filter (105) and a clean water reuse tank (106) in sequence.

3. The coal-containing wastewater system based on electronic flocculation according to claim 2, characterized in that: The pipeline part (200) includes a water pipe assembly (201) and a backwash pipe assembly (202). The water pipe assembly (201) connects and connects the sedimentation tank (101), the electronic flocculator (102), the centrifugal sedimentator (103), the intermediate transition tank (104), the multi-media filter (105) and the clean water reuse tank (106) in series in sequence. The backwash pipe assembly (202) is connected to the multi-media filter (105) and is used to backwash the multi-media filter (105) with the help of the supernatant in the intermediate transition tank (104).

4. The coal-containing wastewater system based on electronic flocculation as claimed in claim 3, characterized in that: The solvent filling part (300) comprises a solvent tank (301) and a uniform stirring component (302); the solvent tank (301) and the uniform stirring component (302) are connected via a solvent pipe 1 (303) for conveying the solvent in the solvent tank (301) to the uniform stirring component (302); a liquid outlet end of the uniform stirring component (302) is connected to a solvent pipe 2 (304); a liquid outlet end of the solvent pipe 2 (304) extends into a sedimentation tank (101) for conveying the solvent in the uniform stirring component (302) to the sedimentation tank (101).

5. The coal-containing wastewater system based on electronic flocculation according to claim 4, characterized in that: A protective component (305) is installed on the top of the second solvent tube (304), and the protective component (305) is used to provide light shielding and ventilation.

6. The coal-containing wastewater system based on electronic flocculation according to claim 5, characterized in that: The protective component (305) comprises a fixed sleeve (305a), an outer protective plate (305b) is arranged above the fixed sleeve (305a), a plurality of partitions (305c) are arranged between the fixed sleeve (305a) and the outer protective plate (305b), and a ventilation cavity (305d) is formed by the gap between two adjacent partitions (305c) and the fixed sleeve (305a) and the outer protective plate (305b).

7. The coal-containing wastewater system based on electronic flocculation according to claim 6, characterized in that: The uniform stirring assembly (302) comprises a cylinder (302a), a motor (302b) is installed on the top of the cylinder (302a), and a stirring rod (302c) is arranged inside the cylinder (302a), and the stirring rod (302c) and the motor (302b) are driven by a linkage (302d).

8. The coal-containing wastewater system based on electronic flocculation according to claim 7, characterized in that: The linkage member (302d) comprises a rotating disk (302d-1), a toothed disk (302d-2) is arranged above the rotating disk (302d-1), and a gear one (302d-3) is equidistantly rotatably connected above the rotating disk (302d-1), a gear two (302d-4) is arranged at a position corresponding to the gear one (302d-3) at the bottom of the rotating disk (302d-1), a gear three (302d-5) is meshed on one side of the gear two (302d-4), and an eccentric rod (302d-6) connected to the stirring rod (302c) is fixedly connected to the bottom of the gear three (302d-5).

9. The coal-containing wastewater system based on electronic flocculation according to claim 8, characterized in that: The water pumping anti-blocking part (400) comprises a through pipe (401), a scraper (402) is fixed at the bottom of the through pipe (401), and a filter plate (403) is arranged on the inner side of the through pipe (401), and the filter plate (403) is driven to rotate by a driving component (404) to form a scraping effect with the scraper (402).

10. The coal-containing wastewater system based on electronic flocculation according to claim 9, characterized in that: The driving assembly (404) comprises a bracket (404a) fixed in the through pipe (401) and a collar (404b) fixed at the axis of the filter disc (403); a telescopic rod (404c) is installed at the axis of the bracket (404a); the telescopic end of the telescopic rod (404c) vertically penetrates the collar (404b) downward, and a conversion piece is passed between the telescopic end of the telescopic rod (404c) and the inner side of the collar (404b); the conversion piece is used to convert a linear motion into a rotational motion and act on the filter disc (403).

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