Industrial park sewage circulation treatment system

Abstract

The invention provides a sewage circulating treatment system for an industrial park. The sewage circulating treatment system comprises a collecting tank, an electrolytic reaction unit, a regulating tank, a flocculation reaction tank and a sedimentation tank which are arranged in sequence. The electrolytic reaction unit comprises a reaction tank, a filtering assembly, a spraying assembly and an electrode assembly. The electrode assembly comprises a plurality of positive plates and a plurality of negative plates, the positive plates are connected through a penetrating shaft, a first driving part is connected to the reaction tank, and the power output end of the first driving part is connected with the penetrating shaft. The plurality of negative plates are connected through a connecting frame, a threaded screw is arranged on the connecting frame, and the second driving part drives the screw to rotate, so that the distance between the positive plates and the negative plates is increased or decreased. A first water outlet pipeline and a second water outlet pipeline are arranged at the water outlet end of the reaction tank, and the first water outlet pipeline is communicated with the inlet of the adjusting tank. A communicating pipeline is arranged at an outlet of the flocculation reaction tank body. The first communicating pipeline is communicated with the sedimentation tank, the second communicating pipeline is communicated with the second water outlet pipeline, and the second water outlet pipeline is communicated to the reaction tank.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sewage circulation treatment system for an industrial park. Background Art

[0002] The sources of industrial park wastewater are wide and the composition is complex, making it difficult to treat. The wastewater may contain various organics, inorganics, heavy metal ions, etc. The composition of wastewater from different industries varies greatly. For example, the chemical industry may contain benzene series, phenols, etc., and the pharmaceutical industry may contain antibiotics, hormones and other complex organic substances. The biodegradability of these wastewaters varies greatly, and the biodegradability of wastewater from some industries is poor, so it is necessary to combine multiple treatment processes to improve the treatment effect.

[0003] The technical methods for recycling wastewater in industrial parks mainly include three stages: pretreatment, biochemical treatment, and deep treatment. Pretreatment is used to remove large particle pollutants and reduce the burden of subsequent treatment stages. The main technical methods include screening, sedimentation, filtration, chemical precipitants, and advanced oxidation. Biochemical treatment uses microorganisms to decompose organic matter in wastewater and reduce the total amount of pollutants. The main technical methods include anaerobic biological treatment and aerobic biological treatment.

[0004] As mentioned above, since industrial wastewater is very complex in composition, poor in biodegradability, contains a large amount of COD, salt and toxic substances, and the pollutants in different industrial wastewaters have very different forms, if the pretreatment effect is poor, the effectiveness of biochemical treatment cannot be guaranteed, and for industrial wastewater containing ammonia nitrogen, total phosphorus, total nitrogen, aniline and heavy metals, etc., it is impossible to achieve effective treatment, which often leads to sewage discharge standards.

[0005] In applications such as printing and dyeing wastewater treatment, chemical wastewater treatment, and heavy metal ion wastewater treatment, in order to meet the sewage discharge standards, it is necessary to design targeted equipment according to different types of wastewater, and the universal treatment of equipment cannot be achieved. In addition, in the sewage treatment process, the recycling of sewage can only be applied after deep treatment, which puts a great burden on sewage treatment equipment and increases energy consumption. Summary of the invention

[0006] In view of this, the present invention aims to propose an industrial park sewage recycling treatment system to improve sewage treatment requirements in various application scenarios and increase the recycling rate.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows: An industrial park sewage circulation treatment system comprises a collection tank, an electrolytic reaction unit, a regulating tank, a flocculation reaction tank and a sedimentation tank which are arranged in sequence; The collection pool is provided with a plurality of collection ports, and the collection ports are connected to wastewater delivery pipes from different sources; The electrolytic reaction unit comprises a reaction tank, a filter assembly arranged at the inlet end of the reaction tank, a spray assembly arranged at the liquid output end of the filter assembly, and an electrode assembly arranged below the spray assembly; The electrode assembly includes a plurality of positive electrode sheets arranged at intervals, and a plurality of negative electrode sheets arranged alternately with the positive electrode sheets, wherein the plurality of positive electrode sheets are connected by a through shaft, and a first driving unit is connected to the reaction tank, and a power output end of the first driving unit is connected to the through shaft; Each of the negative electrode sheets is provided with connecting plates at both ends, and a plurality of the negative electrode sheets are connected by a connecting frame, on which a screw rod is provided, and one end of the screw rod is connected to a second driving part, and the second driving part drives the screw rod to rotate, and the connecting frame moves forward and backward relative to the axial direction of the through shaft, so that the distance between the positive electrode sheet and the negative electrode sheet increases or decreases; The bottom end of the reaction tank has a sedimentation area, and the water outlet end of the reaction tank is provided with a first water outlet pipeline and a second water outlet pipeline, the first water outlet pipeline is connected to the inlet of the regulating tank, and the regulating tank is used to adjust the pH value of the sewage; The flocculation reaction tank comprises a tank body, an upper stirring mechanism arranged on the upper part of the tank body, and a lower stirring mechanism arranged below the stirring mechanism, and a connecting pipeline is arranged at the outlet of the tank body; The connecting pipeline includes a first connecting pipeline and a second connecting pipeline, the first connecting pipeline is connected to the sedimentation tank, the second connecting pipeline is connected to the second water outlet pipeline, and the second water outlet pipeline is connected to the inlet end of the reaction tank.

[0008] Furthermore, the filter assembly includes a filter box having a cavity, wherein a first partition is provided in the filter box, and the first partition divides the cavity into a flow area and a sedimentation area; The second partition in the filtering area, the second partition and the second partition together form a filtering area, the inner cavity is further provided with a conduit, one end of the conduit is connected to the filtering area, and the other end is connected to the sedimentation area.

[0009] Furthermore, the filter area is provided with an output pipe connected to the spray assembly, and the spray assembly includes a water storage tray and a plurality of spray heads connected to the water storage tray; The water storage tray is also connected with an aeration pipe, and the aeration pipe is communicated with an external oxygen tank.

[0010] Furthermore, the regulating tank comprises a base body having a cavity, the base body is provided with a plurality of water inlets, and the water inlets are all connected to the first water outlet pipeline; A stirring head is provided in the base body, and a third driving part for driving the stirring head to rotate is provided below the base body; The outer side of the stirring head is provided with a spirally wound blade.

[0011] Furthermore, the upper stirring mechanism includes an annular support provided on the tank body, a chain provided on the support, a fourth driving part driving the chain, and a plurality of stirring parts provided at intervals on the chain; The annular support is arranged along the outer shape of the pool body.

[0012] Furthermore, the stirring part includes a fixed plate fixed on the chain, a rotating head pivotally connected to both ends of the fixed plate, a fifth driving part is provided at the upper end of the fixed plate, a driving wheel is provided at the power output end of the fifth driving part, and a driven wheel meshing with the driving wheel is provided at the upper end of the rotating head.

[0013] Further, the lower stirring mechanism includes an upper plate arranged transversely in the tank body, a lower plate arranged below the upper plate at intervals, and a rotating plate arranged between the upper plate and the lower plate; The upper plate and the lower plate are respectively provided with an upper leakage hole and a lower leakage hole; A sixth driving part is provided at the lower end of the pool body, and a power output end of the sixth driving part is connected to the rotating plate and passes through the lower plate; The rotating plate is provided with a plurality of through holes evenly distributed around the circumference.

[0014] Furthermore, the tank body is divided into a coagulation area, a flocculation area and a sedimentation area from top to bottom; The upper stirring mechanism is arranged in the coagulation area, the lower stirring mechanism is arranged in the flocculation area, and the lower part of the lower plate is a sedimentation area.

[0015] Furthermore, a lifting pump is provided between the collecting tank and the electrolytic reaction unit, between the regulating tank and the flocculation reaction tank, and between the flocculation reaction tank and the sedimentation tank.

[0016] Furthermore, a water inlet pipe is provided between the collection tank outlet and the reaction tank inlet, and the second water outlet pipeline is connected to the water inlet pipe; The water inlet pipe, the second water outlet pipe, and the second connecting pipe are respectively provided with an electric control valve for adjusting the flow rate; The water outlet of the reaction tank and the water outlet of the cell body are respectively provided with a one-way valve.

[0017] Compared with the prior art, the present invention has the following advantages: The industrial park sewage recycling treatment system described in the present invention, by sequentially setting a collection tank, an electrolytic reaction unit, a regulating tank, a flocculation reaction tank and a sedimentation tank, removes large particle pollutants and suspended solids before biochemical treatment, avoids large particle pollution blocking subsequent pipelines or equipment, and adjusts the water quality by setting to ensure the removal effect of pollutants by biochemical treatment, and by setting a spray assembly and an electrode assembly, the pollutants dissolved in the wastewater can be adsorbed by spraying the sewage on the electrode assembly in a mist form, and the cathode forms hydrogen ions and oxygen ions to adjust the pH of the wastewater, and forms a redox reaction with some components in the wastewater, which not only removes the water chromaticity, but also improves the biodegradability of the wastewater. In addition, for chemical nitrobenzene, phenols and chlorobenzene compounds, electrolytic degradation is achieved by flotation, adsorption, oxidation and final precipitation of the electrolytic reaction unit, thereby improving the treatment effect of sewage.

[0018] In addition, by setting a first driving unit to drive the positive electrode sheet to rotate relative to the negative electrode sheet, a longitudinal cutting airflow is formed between the positive electrode sheet and the negative electrode sheet, which can further increase the contact time between the spray sewage and the electrode and increase the electrolysis effect on organic pollutants. Moreover, by setting a second driving unit to drive the adjustment of the distance between the negative electrode sheet and the positive electrode sheet, it is ensured that the distance between the positive and negative electrode sheets is suitable for the electrolysis requirements, thereby avoiding equipment energy consumption caused by excessive power consumption and reducing production costs.

[0019] In addition, by connecting an aeration pipe to the water storage tray and connecting the aeration pipe to the oxygen tank, tiny bubbles are formed by the water flow hitting the wall, so that the bubbles are in full contact with the air, thereby playing a role in gas-liquid exchange. It can not only increase the contact area between water and air and improve the aeration effect, but also increase the dissolved oxygen content of water, effectively reducing the concentration of organic pollutants such as ammonia nitrogen and COD in the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a flow chart of the industrial park sewage recycling treatment system according to an embodiment of the present invention; Figure 2 A schematic diagram of the layout of an industrial park sewage recycling treatment system according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of the electrolytic reaction unit according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the filter assembly according to an embodiment of the present invention; Figure 5 It is a schematic top view of the upper stirring mechanism described in an embodiment of the present invention.

[0021] Description of reference numerals: 1. Collection tank; 2. Electrolysis reaction unit; 3. Regulating tank; 4. Flocculation reaction tank; 5. Sedimentation tank; 6. First outlet pipe; 7. Second outlet pipe; 8. First connecting pipe; 9. Second connecting pipe; 10. Aeration pipe; 11. Oxygen tank; 12. Lifting pump; 13. Water inlet pipe; 14. Electric control valve; 15. One-way valve; 201, reaction tank; 202, filter assembly; 203, spray assembly; 204, electrode assembly; 205, first drive unit; 206, connecting plate; 207, connecting frame; 208, screw; 209, second drive unit; 210, deposition area; 301, base; 302, water inlet; 303, stirring head; 304, third driving part; 401, tank body; 402, upper stirring mechanism; 403, lower stirring mechanism; Filter box; 2022, first baffle; 2023, flow area; 2024, sedimentation area; 2025, second baffle; 2026, filtration area; 2027, conduit; 2028, output pipe; Water storage tray; 2032, sprinkler head; 2041, positive electrode sheet; 2042, negative electrode sheet; 2043, threading shaft; 4011, coagulation area; 4012, flocculation area; 4013, sedimentation area; 4021, annular support; 4022, chain; 4023, fourth driving unit; 4024, stirring unit; 4031, upper plate; 4032, lower plate; 4033, rotating plate; 4034, sixth driving unit; 40241. fixed plate; 40242. rotating head; 40243. fifth driving unit; 40244. driving wheel; 40245. driven wheel. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] The present embodiment relates to a sewage recycling treatment system for an industrial park, which comprises a collection tank 1, an electrolytic reaction unit 2, a regulating tank 3, a flocculation reaction tank 4 and a sedimentation tank 5 arranged in sequence. The collection tank 1 is provided with a plurality of collection ports, which are connected to wastewater delivery pipes from different sources. The electrolytic reaction unit 2 comprises a reaction tank 201, a filter assembly 202 arranged at the inlet end of the reaction tank 201, a spray assembly 203 arranged at the liquid output end of the filter assembly 202, and an electrode assembly 204 arranged below the spray assembly 203. The electrode assembly 204 comprises a plurality of positive electrode sheets 2041 arranged at intervals, and a plurality of negative electrode sheets 2042 arranged staggered with the positive electrode sheets 2041, and a plurality of positive electrode sheets 2041 are connected by a through shaft 2043, and a first driving unit 205 is connected to the reaction tank 201, and a power output end of the first driving unit 205 is connected to the through shaft 2043.

[0027] Wherein, each negative electrode sheet 2042 is provided with a connecting plate 206 at both ends, and a plurality of negative electrode sheets 2042 are connected by a connecting frame 207, on which a screw rod 208 is provided, and one end of the screw rod 208 is connected to a second driving part 209, and the second driving part 209 drives the screw rod 208 to rotate, and the connecting frame 207 moves forward and backward relative to the axial direction of the through shaft 2043, so that the spacing between the positive electrode sheet 2041 and the negative electrode sheet 2042 increases or decreases. The bottom end of the reaction tank 201 has a sedimentation area 210, and the outlet end of the reaction tank 201 is provided with a first outlet pipe 6 and a second outlet pipe 7, and the first outlet pipe 6 is connected to the inlet of the regulating tank 3, and the regulating tank 3 is used to adjust the pH value of the sewage. The flocculation reaction tank 4 includes a tank body 401, an upper stirring mechanism 402 arranged on the upper part of the tank body 401, and a lower stirring mechanism 403 arranged below the stirring mechanism, and a connecting pipe is provided at the outlet of the tank body 401. The connecting pipeline includes a first connecting pipeline 8 and a second connecting pipeline 9 . The first connecting pipeline 8 is connected to the sedimentation tank 5 . The second connecting pipeline 9 is connected to the second water outlet pipeline 7 . The second water outlet pipeline 7 is connected to the inlet end of the reaction tank 201 .

[0028] The industrial park sewage recycling treatment system described in this embodiment, by sequentially setting up a collection tank 1, an electrolytic reaction unit 2, a regulating tank 3, a flocculation reaction tank 4 and a sedimentation tank 5, removes large particle pollutants and suspended solids before biochemical treatment, avoids large particle pollution blocking subsequent pipes or equipment, and adjusts the water quality by setting to ensure the removal effect of pollutants by biochemical treatment, and by setting up a spray component 203 and an electrode component 204, the pollutants dissolved in the wastewater can be adsorbed by spraying the sewage on the electrode component 204 in a mist form, and the cathode forms hydrogen ions and oxygen ions to adjust the pH of the wastewater, and forms a redox reaction with some components in the wastewater, which not only removes the water color, but also improves the biodegradability of the wastewater. In addition, for chemical nitrobenzene, phenols and chlorobenzene compounds, electrolytic degradation is achieved by flotation, adsorption, oxidation and final precipitation of the electrolytic reaction unit 2, thereby improving the treatment effect of sewage.

[0029] In addition, by setting the first driving unit 205 to drive the positive electrode sheet 2041 to rotate relative to the negative electrode sheet 2042, a longitudinal cutting airflow is formed between the positive electrode sheet 2041 and the negative electrode sheet 2042, which can further increase the contact time between the spray sewage and the electrode and increase the electrolysis effect of the electrolysis on organic pollutants. Moreover, by setting the second driving unit 209 to drive the adjustment of the distance between the negative electrode sheet 2042 and the positive electrode sheet 2041, it is ensured that the distance between the positive and negative electrode sheets 2042 is suitable for the electrolysis requirements, thereby avoiding the energy consumption of the equipment caused by excessive power consumption and reducing the production cost.

[0030] Based on the above overall introduction, an exemplary structure of the industrial park sewage recycling treatment system of this embodiment is as follows: Figure 1 and Figure 2 As shown, the water outlet of the reaction tank 201 is recycled through the second water outlet pipeline 7 and then enters the electrolytic reaction unit 2 again. In addition, the water inlet of the second water outlet pipeline 7 in this embodiment is less than the flow rate of the water inlet pipe 13 described below, which can ensure that the water outlet of the first water outlet pipeline 6 continues to flow into the regulating tank 3, and also plays a role in effectively removing organic matter. In addition, it is also connected to the second water outlet pipeline 7 through the second connecting pipeline 9 to dilute the organic pollutants in the second water outlet pipeline 7, further ensure the treatment effect of the pretreatment, and realize the circulation of water inlet and outlet. The first drive unit 205 and the second drive unit 209 use servo motors.

[0031] like Figure 3As shown, the filter assembly 202 includes a filter box 2021 with a cavity, and a first partition 2022 is provided in the filter box 2021, and the first partition 2022 divides the cavity into a flow area 2023 and a sedimentation area 2024. A second partition 2025 is provided in the filter area 2026, and the second partitions 2025 and the second partitions 2025 enclose the filter area 2026. The inner cavity is also provided with a conduit 2027, and one end of the conduit 2027 is connected to the filter area 2026, and the other end is connected to the sedimentation area 2024. The setting of the filter assembly 202 can screen large suspended particles in the sewage to avoid clogging the following spray head and ensure the normal operation of the system.

[0032] Furthermore, if Figure 3 and Figure 4 As shown, the filter area 2026 is provided with an output pipe 2028 connected to the spray assembly 203, and the spray assembly 203 includes a water storage tray 2031 and a plurality of spray heads 2032 connected to the water storage tray 2031. The water storage tray 2031 is also connected to an aeration pipe 10, and the aeration pipe 10 is connected to an external oxygen tank 11. The structure of the spray head 2032 can refer to the mist spray head in the prior art, and will not be described in detail here.

[0033] In this embodiment, an aeration pipe 10 is connected to the water storage tray 2031, and the aeration pipe 10 is connected to the oxygen tank 11. Water flow hits the wall to form tiny bubbles, which allow the bubbles to fully contact with the air, thereby achieving gas-liquid exchange. This can not only increase the contact area between the water body and the air and improve the aeration effect, but also increase the dissolved oxygen content of the water, effectively reducing the concentration of organic pollutants such as ammonia nitrogen and COD in the water.

[0034] like Figure 2 , Figure 3 As shown, the regulating tank 3 includes a base body 301 with a cavity, and a plurality of water inlets 302 are provided on the base body 301, and the water inlets 302 are all connected to the first water outlet pipeline 6. A stirring head 303 is provided in the base body 301, and a third driving part 304 for driving the stirring head 303 to rotate is provided below the base body 301, and a spirally wound blade is provided outside the stirring head 303, and the third driving part 304 adopts a servo motor.

[0035] like Figure 2 and Figure 5 As shown, the upper stirring mechanism 402 includes an annular support 4021 disposed on the tank body 401, a chain 4022 disposed on the support, a fourth driving part 4023 driving the chain 4022 to transmit, and a plurality of stirring parts 4024 disposed at intervals on the chain 4022. The annular support 4021 is disposed along the shape of the tank body 401. The fourth driving part 4023 adopts a servo motor.

[0036] Furthermore, if Figure 4As shown, the stirring part 4024 includes a fixed plate 40241 fixed on the chain 4022, a rotating head 40242 pivotally connected to both ends of the fixed plate 40241, a fifth driving part 40243 is provided at the upper end of the fixed plate 40241, a driving wheel 40244 is provided at the power output end of the fifth driving part 40243, a driven wheel 40245 meshing with the driving wheel 40244 is provided at the upper end of the rotating head 40242, and the fifth driving part 40243 adopts a servo motor.

[0037] In addition, if Figure 2 As shown, the lower stirring mechanism 403 includes an upper plate 4031 arranged transversely in the tank body 401, a lower plate 4032 arranged below the upper plate 4031 at intervals, and a rotating plate 4033 arranged between the upper plate 4031 and the lower plate 4032. The upper plate 4031 and the lower plate 4032 are respectively provided with an upper leakage hole and a lower leakage hole, and the lower end of the tank body 401 is provided with a sixth driving part 4034, and the power output end of the sixth driving part 4034 is connected to the rotating plate 4033 and passes through the lower plate 4032. The rotating plate 4033 is provided with a plurality of through holes evenly distributed around the circumference, and the sixth driving part 4034 adopts a servo motor.

[0038] As mentioned above, by setting a fixed upper plate 4031 and a lower plate 4032, the stirred sewage flows into the space between the upper plate 4031 and the upper plate 4031 through the upper leakage hole, and by setting the sixth driving unit 4034 to drive the rotating plate 4033 to rotate, the through holes on the rotating plate 4033 form a spiral water flow, which plays a further stirring role, so that the water flow velocity near the upper plate 4031 or the lower plate 4032 gradually decreases, so as to obtain a good flocculation effect, and realize the uniformity of the flocculation area 4012 described below, and complete the flocculation process in a shorter time. The rotation speed of the sixth driving unit 4034 is adjusted as needed. When the flocculation is completed, the sixth driving unit 4034 stops, so that the suspended matter and impurities are effectively precipitated.

[0039] like Figure 2As shown, the tank body 401 is divided into a coagulation area 4011, a flocculation area 4012 and a sedimentation area 4013 from top to bottom, the upper stirring mechanism 402 is arranged in the coagulation area 4011, the lower stirring mechanism 403 is arranged in the flocculation area 4012, and the lower part of the lower plate 4032 is the sedimentation area 4013. By arranging the upper stirring mechanism 402 in the coagulation area 4011 and injecting the reagent into the tank body 401, the sewage forms fine alum flowers in a very short time, and the water flows down from the upper leakage hole to the flocculation area 4012. The flocculation area 4012 is enclosed by arranging the upper plate 4031 and the lower plate 4032, and the rotating plate 4033 is arranged between the two, so as to form a turbulent effect, increase the residence time of the sewage and the reagent reaction, and improve the flocculation effect. The flocculation area 4012 is also isolated from the sedimentation area 4013 by the lower plate 4032, so as to ensure the formation of upper clarified water and maintain the sewage treatment effect.

[0040] Furthermore, if Figure 2 As shown, lift pumps 12 are provided between the collecting tank 1 and the electrolytic reaction unit 2 , between the regulating tank 3 and the flocculation reaction tank 4 , and between the flocculation reaction tank 4 and the sedimentation tank 5 .

[0041] In addition, in order to ensure the performance of the circulating water circuit, such as Figure 2 As shown, a water inlet pipe 13 is provided between the outlet of the collection tank 1 and the inlet of the reaction tank 201, and the second water outlet pipeline 7 is connected to the water inlet pipe 13. The water inlet pipe 13, the second water outlet pipeline 7, and the second connecting pipeline 9 are respectively provided with an electric control valve 14 for adjusting the flow rate, and the water outlet of the reaction tank 201 and the water outlet of the tank body 401 are respectively provided with a one-way valve 15.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An industrial park sewage circulation treatment system, characterized by: It comprises a collection tank (1), an electrolytic reaction unit (2), a regulating tank (3), a flocculation reaction tank (4) and a sedimentation tank (5) which are arranged in sequence; The collection pool (1) is provided with a plurality of collection ports, and the collection ports are connected to wastewater delivery pipes from different sources; The electrolytic reaction unit (2) comprises a reaction tank (201), a filter assembly (202) arranged at the inlet end of the reaction tank (201), a spray assembly (203) arranged at the liquid output end of the filter assembly (202), and an electrode assembly (204) arranged below the spray assembly (203); The electrode assembly (204) comprises a plurality of positive electrode sheets (2041) arranged at intervals, and a plurality of negative electrode sheets (2042) arranged alternately with the positive electrode sheets (2041); the plurality of positive electrode sheets (2041) are connected via a through shaft (2043); a first driving unit (205) is connected to the reaction tank (201); and a power output end of the first driving unit (205) is connected to the through shaft (2043); Each of the negative electrode sheets (2042) is provided with a connecting plate (206) at both ends, and a plurality of the negative electrode sheets (2042) are connected via a connecting frame (207). A screw rod (208) is provided on the connecting frame (207), and a second driving unit (209) is connected to one end of the screw rod (208). The second driving unit (209) drives the screw rod (208) to rotate, and the connecting frame (207) moves forward and backward relative to the axial direction of the through shaft (2043), so as to increase or decrease the distance between the positive electrode sheet (2041) and the negative electrode sheet (2042); The bottom end of the reaction tank (201) is provided with a sedimentation area (210); the water outlet end of the reaction tank (201) is provided with a first water outlet pipeline (6) and a second water outlet pipeline (7); the first water outlet pipeline (6) is connected to the inlet of the regulating tank (3); the regulating tank (3) is used to adjust the pH value of the sewage; The flocculation reaction tank (4) comprises a tank body (401), an upper stirring mechanism (402) arranged on the upper part of the tank body (401), and a lower stirring mechanism (403) arranged below the stirring mechanism; a connecting pipeline is provided at the outlet of the tank body (401); The connecting pipeline comprises a first connecting pipeline (8) and a second connecting pipeline (9), the first connecting pipeline (8) being connected to the sedimentation tank (5), the second connecting pipeline (9) being connected to the second water outlet pipeline (7), and the second water outlet pipeline (7) being connected to the inlet end of the reaction tank (201).

2. The industrial park sewage circulation treatment system according to claim 1 is characterized by: The filter assembly (202) comprises a filter box (2021) having a cavity, wherein a first partition (2022) is provided in the filter box (2021), and the first partition (2022) divides the cavity into a flow area (2023) and a sedimentation area (2024); A second partition (2025) is provided in the filtration area (2026), and the second partition (2025) and the second partition (2025) together form a filtration area (2026). The cavity is also provided with a conduit (2027), and one end of the conduit (2027) is connected to the filtration area (2026), and the other end is connected to the sedimentation area (2024).

3. The industrial park sewage circulation treatment system according to claim 2 is characterized by: The filtering area (2026) is provided with an output pipe (2028) connected to the spray assembly (203); the spray assembly (203) comprises a water storage tray (2031) and a plurality of spray heads (2032) connected to the water storage tray (2031); The water storage tray (2031) is also connected to an aeration pipe (10), and the aeration pipe (10) is in communication with an external oxygen tank (11).

4. The industrial park sewage circulation treatment system according to claim 3 is characterized by: The regulating pool (3) comprises a base body (301) having a cavity, the base body (301) being provided with a plurality of water inlets (302), the water inlets (302) being all connected to the first water outlet pipeline (6); A stirring head (303) is provided inside the base body (301), and a third driving part (304) for driving the stirring head (303) to rotate is provided below the base body (301); The outer side of the stirring head (303) is provided with a spirally wound blade.

5. The industrial park sewage circulation treatment system according to claim 1 is characterized by: The upper stirring mechanism (402) comprises an annular support (4021) provided on the tank body (401), a chain (4022) provided on the support, a fourth driving part (4023) driving the chain (4022) to transmit, and a plurality of stirring parts (4024) provided at intervals on the chain (4022); The annular support (4021) is arranged along the outer shape of the pool body (401).

6. The industrial park sewage circulation treatment system according to claim 5 is characterized by: The stirring portion (4024) comprises a fixed plate (40241) fixed on the chain (4022), a rotating head (40242) pivotally connected to both ends of the fixed plate (40241), a fifth driving portion (40243) being provided at the upper end of the fixed plate (40241), a driving wheel (40244) being provided at the power output end of the fifth driving portion (40243), and a driven wheel (40245) meshing with the driving wheel (40244) being provided at the upper end of the rotating head (40242).

7. The industrial park sewage circulation treatment system according to claim 3 is characterized by: The lower stirring mechanism (403) comprises an upper plate (4031) arranged transversely in the tank body (401), a lower plate (4032) arranged at intervals below the upper plate (4031), and a rotating plate (4033) arranged between the upper plate (4031) and the lower plate (4032); An upper leakage hole and a lower leakage hole are respectively provided on the upper plate (4031) and the lower plate (4032); A sixth driving part (4034) is provided at the lower end of the pool body (401); a power output end of the sixth driving part (4034) is connected to the rotating plate (4033) and passes through the lower plate (4032); The rotating plate (4033) is provided with a plurality of through holes evenly distributed around the circumference.

8. The industrial park sewage circulation treatment system according to claim 7 is characterized by: The tank body (401) is divided from top to bottom into a coagulation area (4011), a flocculation area (4012) and a sedimentation area (4013); The upper stirring mechanism (402) is arranged in the coagulation area (4011), the lower stirring mechanism (403) is arranged in the flocculation area (4012), and the lower part of the lower plate (4032) is a sedimentation area (4013).

9. The industrial park sewage circulation treatment system according to claim 1 is characterized by: A lifting pump (12) is provided between the collection tank (1) and the electrolytic reaction unit (2), between the regulating tank (3) and the flocculation reaction tank (4), and between the flocculation reaction tank (4) and the sedimentation tank (5).

10. The industrial park sewage circulation treatment system according to claim 1, characterized in that: A water inlet pipe (13) is provided between the outlet of the collection tank (1) and the inlet of the reaction tank (201), and the second water outlet pipeline (7) is connected to the water inlet pipe (13); The water inlet pipe (13), the second water outlet pipe (7), and the second connecting pipe (9) are respectively provided with an electric control valve (14) for adjusting the flow rate; The water outlet of the reaction tank (201) and the water outlet of the tank body (401) are respectively provided with a one-way valve (15).

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