An industrial wastewater treatment sedimentation tank

Abstract

The utility model relates to wastewater treatment sedimentation technical field especially is an industrial wastewater treatment sedimentation tank, including main part, the main part is in respectively seted up first -stage sedimentation tank, second -stage sedimentation tank, third -stage sedimentation tank and clear water pool, the first -stage sedimentation tank inside bottom surface symmetry is seted up to have collected groove, the collected groove is rotatably connected with auger, the main part one side intercommunication is provided with blowdown pipe.Industrial wastewater treatment sedimentation tank, by setting up multistage series' sedimentation tank and filter unit, realized to the step -by -step, depth purification of industrial wastewater. The first -stage sedimentation tank adopts adjustable angle's inclined plate sedimentation technology, and the sedimentation area is greatly increased, and most of the suspended solids are removed quickly, the subsequent polypropylene filter plate, stainless steel filter plate and activated carbon filter plate combination can effectively intercept fine particles and adsorb soluble pollutants, and the final effluent quality is clear, and each index is significantly improved, and the high standard discharge or reuse requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment sedimentation technology, and in particular to an industrial wastewater treatment sedimentation tank. Background Technology

[0002] Industrial wastewater has a complex composition, often containing large amounts of suspended solids, colloidal substances, and dissolved pollutants. Improper treatment and direct discharge will pollute the environment. Sedimentation tanks, as a key physical treatment unit in the industrial wastewater treatment process, are crucial in terms of treatment efficiency and operational stability.

[0003] Currently, traditional industrial wastewater sedimentation tanks mostly employ single or simple multi-stage sedimentation structures, which have several shortcomings in practical applications: they often use single-stage sedimentation or single-filtration structures, which can only remove some large suspended solids, resulting in poor interception and adsorption of fine particles and dissolved pollutants. Consequently, the effluent quality indicators fail to meet high standards for discharge or reuse. Furthermore, the fixed angle of the sedimentation structure (such as inclined plates) makes it impossible to adjust parameters according to the settling characteristics of suspended particles in different industrial wastewaters, leading to unstable treatment effects on complex water qualities. Therefore, we propose a new type of industrial wastewater treatment sedimentation tank. Utility Model Content

[0004] The main purpose of this invention is to provide an industrial wastewater treatment sedimentation tank that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An industrial wastewater treatment sedimentation tank includes a main body, within which are respectively provided a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank, and a clear water tank. A collection trough is symmetrically formed on the bottom surface of the primary sedimentation tank, and an auger is rotatably connected within the collection trough. A sewage pipe is connected to one side of the main body, and a sewage pump is connected to one end of the sewage pipe. A bevel gear is provided at one end of the auger. A double-headed motor is provided on one side of the main body, and bevel gears are provided at the output ends of both sides of the double-headed motor. Several rotating rods are rotatably connected within the primary sedimentation tank. Inclined plates are provided on the circumferential sides of each rotating rod, and a worm gear is provided at one end of each rotating rod. Fixed plates are symmetrically arranged on one side of the main body, and a worm gear is rotatably connected between two sets of fixed plates. A rotating motor is provided on one side of the right-hand fixed plate.

[0006] Preferably, a filter tank is provided between the primary sedimentation tank and the secondary sedimentation tank. Two sets of slots are symmetrically provided on opposite surfaces of the inner wall of the filter tank. Each set of slots contains a polypropylene filter plate, and a fine, permeable cloth is provided on one side of each polypropylene filter plate. By adopting the above technical solution: the settled sludge will naturally slide or settle into the collection tank at the bottom of the tank. The auger can continuously or intermittently push this thick sludge slowly from the bottom of the tank towards the sewage pipe interface. Traditional sludge discharge pipes are prone to clogging, while the mechanical pushing force of the auger can effectively handle sludge containing a large amount of solid particles, ensuring smooth sludge discharge. The polypropylene filter plate, as the supporting frame, has high strength, is corrosion-resistant, and can withstand a certain water pressure. The fine, permeable cloth, as the main filtration layer, has small pores that can effectively capture fine particles, making the effluent clearer. The slot design allows for easy removal of the filter plate and permeable cloth for cleaning or replacement when they become clogged, making maintenance extremely convenient.

[0007] Preferably, an overflow trough one is provided between the secondary sedimentation tank and the tertiary sedimentation tank, and an overflow trough two is provided between the tertiary sedimentation tank and the clear water tank. A stainless steel filter plate is installed in the overflow trough two. The inner wall of the clear water tank has slots on opposite surfaces, and activated carbon filter plates are installed in these slots. By adopting the above technical solution, the adjustable-angle inclined plates significantly increase the sedimentation area. This is a classic application of the "shallow pool theory." With the same floor space, multiple inclined plates multiply the total sedimentation area, allowing small particles to reach the plate surface and settle more quickly, thus greatly improving sedimentation efficiency and reducing the tank volume. The worm gear mechanism allows for uniform adjustment of the angle of all inclined plates. For wastewater with different settling characteristics, the optimal inclination angle can be found to achieve the best sedimentation effect, enhancing the adaptability and treatment efficiency of the equipment. The worm gear has a self-locking function; once the angle is adjusted, even without motor drive, water flow impact cannot cause the inclined plates to rotate, ensuring operational stability.

[0008] Preferably, a servo motor is installed on one side of the main body located in the three-stage sedimentation tank, a stirring rod is rotatably connected inside the three-stage sedimentation tank, a number of stirring blades are provided on the periphery of the stirring rod, a support plate is provided on the upper surface of the three-stage sedimentation tank, and a medicine tank is provided on the upper surface of the support plate.

[0009] Preferably, the main body has a water inlet and a water outlet symmetrically arranged on one side, the water inlet being connected to the primary sedimentation tank and the water outlet being connected to the clear water tank.

[0010] Preferably, the sewage pipe is connected to the collection tank, the first bevel gear meshes with the second bevel gear, a protective shell is provided on one side of the main body, the dual-head motor is located inside the protective shell, and a number of heat dissipation vents are opened on one side of the inner wall of the protective shell.

[0011] Preferably, the output end of the rotating motor is fixedly connected to one end of the worm, the worm meshes with the worm wheel, a second protective shell is provided on one side of the main body, the worm, the worm wheel and the rotating motor are all located inside the second protective shell, and a plurality of heat dissipation grooves are provided on one side of the inner wall of the second protective shell.

[0012] Preferably, the output end of the servo motor is fixedly connected to one end of the stirring rod, the upper surface of the medicine tank is provided with a medicine inlet, one side of the medicine tank is provided with a medicine outlet pipe, a solenoid valve is provided inside the medicine outlet pipe, and the drain outlet is located on the left side of the activated carbon filter plate.

[0013] By adopting the above technical solution: the stirring rod and blades enable the agent to be mixed with the wastewater quickly and evenly, promoting the formation of "lump flocs", thereby accelerating the settling speed and improving the settling effect. The stainless steel material is sturdy, corrosion-resistant, and easy to clean, and can intercept finer residual suspended solids and flocs. Activated carbon has a huge specific surface area and strong adsorption capacity, which can remove color, odor, dissolved organic matter and some heavy metal ions from the water, significantly improving the quality of the effluent.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model achieves step-by-step, in-depth purification of industrial wastewater by setting up multi-stage series sedimentation tanks and filtration units. The first-stage sedimentation tank adopts adjustable-angle inclined plate sedimentation technology, which greatly increases the settling area and quickly removes most of the suspended solids; the subsequent combination of polypropylene filter plates, stainless steel filter plates and activated carbon filter plates can effectively intercept fine particles and adsorb dissolved pollutants, resulting in clear effluent with significantly improved indicators, meeting high standards for discharge or reuse.

[0015] 2. The bottom of the primary sedimentation tank is equipped with a mechanical sludge removal system consisting of a collection trough and an auger. This system continuously and efficiently pushes thick sludge to the discharge outlet, effectively solving the problem of easy clogging in traditional sludge discharge pipes. Combined with a sewage pump, it achieves automated cleaning of sludge at the bottom of the sedimentation tank, greatly reducing the labor intensity and frequency of manual sludge removal. Meanwhile, each filter unit adopts a slot-type or clip-on design, making the cleaning and replacement of filter media very convenient and reducing long-term maintenance costs.

[0016] 3. The angle of the inclined plate in the primary sedimentation tank can be uniformly adjusted via a worm gear mechanism, allowing for optimized operating parameters based on the settling characteristics of different wastewaters and enhancing the equipment's adaptability to varying water qualities. The worm gear drive has a self-locking function, ensuring the angular stability of the inclined plate during operation and protecting it from water flow impacts. Furthermore, key transmission components are equipped with protective shells, providing both safety protection and heat dissipation, ensuring the motor and transmission system operate stably for extended periods in harsh industrial environments.

[0017] 4. The three-stage sedimentation tank integrates a dosing and stirring system. By adding coagulants or flocculants, colloidal particles in the water can be promoted to form flocs and accelerate sedimentation. This effectively solves the problem of pollutants that are difficult to treat by relying solely on physical sedimentation, making the entire system more complete and more capable of handling complex industrial wastewater. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an industrial wastewater treatment sedimentation tank according to the present invention. Figure 2 In this utility model Figure 1 Enlarged view of section B; Figure 3 This is a front view of an industrial wastewater treatment sedimentation tank according to the present invention. Figure 4 In this utility model Figure 3 Cross-sectional view of section AA; Figure 5 This is an exploded view of a protective shell for an industrial wastewater treatment sedimentation tank according to the present invention. Figure 6 This is an exploded view of the protective shell 2 of an industrial wastewater treatment sedimentation tank according to the present invention.

[0019] In the diagram: 1. Main body; 11. Primary sedimentation tank; 12. Secondary sedimentation tank; 13. Tertiary sedimentation tank; 14. Clear water tank; 10. Inlet; 101. Outlet; 102. Collection tank; 103. Screw conveyor; 104. Sewage pipe; 105. Sewage pump; 106. Bevel gear one; 107. Dual-head motor; 108. Bevel gear two; 109. Protective shell one; 110. Filter tank one; 111. Slot one; 112. Polypropylene filter plate; 13. Fine permeable cloth; 120. Overflow trough one; 130. Overflow trough two; 131. Stainless steel filter plate; 132. Servo motor; 133. Stirring rod; 134. Stirring blade; 135. Support plate; 136. Medicine tank; 137. Medicine discharge pipe; 140. Slot; 141. Activated carbon filter plate; 2. Inclined plate; 20. Rotating rod; 201. Worm gear; 3. Fixing plate; 30. Worm; 301. Rotating motor; 302. Protective shell two. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figures 1 to 6 This utility model provides a technical solution: An industrial wastewater treatment sedimentation tank includes a main body 1, within which are respectively provided a primary sedimentation tank 11, a secondary sedimentation tank 12, a tertiary sedimentation tank 13, and a clear water tank 14. A collection trough 102 is symmetrically provided on the bottom surface of the primary sedimentation tank 11, and an auger 103 is rotatably connected within the collection trough 102. A sewage pipe 104 is connected to one side of the main body 1, and a sewage pump 105 is connected to one end of the sewage pipe 104. A bevel gear 106 is provided at one end of the auger 103. A double-headed motor 107 is provided on one side of the main body 1, and bevel gears 108 are provided at both output ends of the double-headed motor 107. Several rotating rods 20 are rotatably connected within the primary sedimentation tank 11, and inclined surfaces are provided around the circumference of the rotating rods 20. The inclined plate 2 and the rotating rod 20 are equipped with a worm gear 201 at one end. The main body 1 is symmetrically equipped with a fixing plate 3 on one side. The two sets of fixing plates 3 are rotatably connected by a worm gear 30. The right side of the fixing plate 3 is equipped with a rotating motor 301. A filter tank 110 is opened between the primary sedimentation tank 11 and the secondary sedimentation tank 12. The inner wall of the filter tank 110 is symmetrically equipped with two sets of slots 111 on opposite surfaces. Polypropylene filter plates 112 are installed in both sets of slots 111. A fine permeable cloth 113 is installed on one side of the polypropylene filter plate 112. An overflow trough 120 is opened between the secondary sedimentation tank 12 and the tertiary sedimentation tank 13. An overflow trough 130 is opened between the tertiary sedimentation tank 13 and the clear water tank 14.

[0024] In this embodiment, a stainless steel filter plate 131 is installed inside the overflow trough 130. Slots 140 are formed on opposite surfaces of the inner wall of the clear water tank 14, and activated carbon filter plates 141 are installed inside the slots 140. A servo motor 132 is installed on one side of the main body 1 located in the tertiary sedimentation tank 13. A stirring rod 133 is rotatably connected inside the tertiary sedimentation tank 13, and several stirring blades 134 are provided on the circumferential side of the stirring rod 133. A support plate 135 is installed on the upper surface of the tertiary sedimentation tank 13, and a medicine box 136 is installed on the upper surface of the support plate 135. A water inlet 10 and a water outlet 101 are symmetrically arranged on one side of the main body 1. The water inlet 10 communicates with the primary sedimentation tank 11, and the water outlet 101 communicates with the clear water tank 14. The sewage pipe 104 communicates with the collection tank 102. A bevel gear 106 meshes with a bevel gear 208. The main body 1 has a protective shell 109 on one side, and a dual-head motor 107 is located inside the protective shell 109. Several heat dissipation vents are opened on one side of the inner wall of the protective shell 109. The output end of the rotating motor 301 is fixedly connected to one end of the worm 30. The worm 30 meshes with the worm wheel 201. The main body 1 has a protective shell 302 on one side, and the worm 30, worm wheel 201 and rotating motor 301 are all located inside the protective shell 302. Several heat dissipation grooves are opened on one side of the inner wall of the protective shell 302. The output end of the servo motor 132 is fixedly connected to one end of the stirring rod 133. A medicine addition port is connected to the upper surface of the medicine tank 136. A medicine discharge pipe 137 is connected to one side of the medicine tank 136. A solenoid valve is connected inside the medicine discharge pipe 137. The drain outlet 101 is located on the left side of the activated carbon filter plate 141.Through the above scheme: wastewater enters the primary sedimentation tank 11 from the inlet 10. The tank is equipped with multiple sets of adjustable-angle inclined plates 2, which significantly increase the effective settling area. Most of the heavier suspended solid particles in the water will quickly settle and slide to the bottom of the tank under the influence of gravity. The collection troughs 102 symmetrically arranged at the bottom of the tank are used to collect the settled sludge. The auger 103 inside the trough, driven by a dual-head motor 107, transmits power through the meshing of bevel gear 106 and bevel gear 2 108, rotating to slowly displace the thick sludge. Pushing the sewage pipe 104 to one end, the sewage pump 105 starts, discharging the sludge transported by the auger 103 out of the tank through the sewage pipe 104. The rotating motor 301 drives the worm gear 30 to rotate, and the worm gear 30 meshes with the worm wheel 201 at the end of each rotating rod 20, thereby driving all rotating rods 20 and the inclined plate 2 to rotate synchronously to adjust the optimal tilt angle. The self-locking characteristics of the worm wheel 201 and worm gear 30 mechanism ensure that the angle will not change under water flow impact after adjustment. The clear liquid, after preliminary sedimentation, flows into the filter tank. 110. A filtration unit consisting of a polypropylene filter plate 112 and a fine permeable cloth 113 is installed in the tank via slot 111. This combination can effectively intercept smaller suspended solids remaining in the wastewater, achieving primary filtration. Overflow tank 120 connects the secondary sedimentation tank 12 and the tertiary sedimentation tank 13. The coagulant or flocculant in the chemical tank 136 is added to the tertiary sedimentation tank 13 through the dosing pipe 137, with the flow rate controlled by a solenoid valve. The servo motor 132 drives the stirring rod 133 and stirring blades 134 to rotate, ensuring that the chemicals are fully and evenly mixed with the wastewater. The mixture is thoroughly mixed to promote the formation of larger "lump flocs" from colloidal particles that are difficult to settle in the water, thereby accelerating their settling. The supernatant from the three-stage sedimentation tank 13 enters the clear water tank 14 through the overflow channel 130. The stainless steel filter plate 131 performs fine filtration to intercept any small flocs or suspended solids that may escape. Finally, the water flows through the activated carbon filter plate 141 installed in the slot 140. Through its huge specific surface area and strong adsorption, the activated carbon filter plate removes color, odor, dissolved organic matter and some heavy metal ions from the water, thus ultimately improving the water quality.

[0025] It should be noted that the wastewater enters the primary sedimentation tank 11 through the inlet 10. The tank is equipped with multiple sets of adjustable-angle inclined plates 2, which significantly increase the effective settling area. Most of the heavier suspended solids in the water will quickly settle and slide to the bottom of the tank under the influence of gravity. The collection troughs 102 symmetrically arranged at the bottom of the tank are used to collect the settled sludge. The auger 103 inside the trough, driven by a dual-head motor 107, transmits power through the meshing of bevel gear 106 and bevel gear 2 108, rotating to slowly agitate the thick sludge. Pushing the sewage pipe 104 to one end, the sewage pump 105 starts, discharging the sludge transported by the auger 103 out of the tank through the sewage pipe 104. The rotating motor 301 drives the worm gear 30 to rotate, and the worm gear 30 meshes with the worm wheel 201 at the end of each rotating rod 20, thereby driving all rotating rods 20 and the inclined plate 2 to rotate synchronously to adjust the optimal tilt angle. The self-locking characteristics of the worm wheel 201 and worm gear 30 mechanism ensure that the angle will not change under water flow impact after adjustment. The clear liquid, after preliminary sedimentation, flows into the filter tank. 110. A filtration unit consisting of a polypropylene filter plate 112 and a fine permeable cloth 113 is installed in the tank via slot 111. This combination can effectively intercept smaller suspended solids remaining in the wastewater, achieving primary filtration. Overflow tank 120 connects the secondary sedimentation tank 12 and the tertiary sedimentation tank 13. The coagulant or flocculant in the chemical tank 136 is added to the tertiary sedimentation tank 13 through the dosing pipe 137, with the flow rate controlled by a solenoid valve. The servo motor 132 drives the stirring rod 133 and stirring blades 134 to rotate, ensuring that the chemicals are fully and evenly mixed with the wastewater. The mixture is thoroughly mixed to promote the formation of larger "lump flocs" from colloidal particles that are difficult to settle in the water, thereby accelerating their sedimentation. The supernatant from the tertiary sedimentation tank 13 flows into the clear water tank 14 through the overflow trough 130. The stainless steel filter plate 131 performs fine filtration, intercepting any small flocs or suspended solids that may escape. Finally, the water flows through the activated carbon filter plate 141 installed in the slot 140. Through its huge specific surface area and strong adsorption, the activated carbon filter removes color, odor, dissolved organic matter, and some heavy metal ions from the water, ultimately improving the water quality. Protective shell 109 and protective shell 202 protect the dual-head motor 107 and the worm gear 30 and worm wheel 201 transmission system, respectively, providing safety protection, dust prevention, and corrosion prevention. The heat dissipation vents and slots on the shells effectively dissipate the heat generated by the generator during operation, ensuring the equipment operates stably for a long time.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An industrial wastewater treatment sedimentation tank, comprising a main body (1), characterized in that: The main body (1) is provided with a primary sedimentation tank (11), a secondary sedimentation tank (12), a tertiary sedimentation tank (13), and a clear water tank (14). A collection trough (102) is symmetrically arranged on the bottom surface of the primary sedimentation tank (11). An auger (103) is rotatably connected inside the collection trough (102). A sewage pipe (104) is connected to one side of the main body (1). A sewage pump (105) is connected to one end of the sewage pipe (104). A bevel gear (106) is provided at one end of the auger (103). The main body (1) has a... A double-headed motor (107) is provided on the surface. Both output ends of the double-headed motor (107) are provided with bevel gears (108). Several rotating rods (20) are rotatably connected inside the primary sedimentation tank (11). An inclined plate (2) is provided on the circumferential side of the rotating rod (20). A worm gear (201) is provided at one end of the rotating rod (20). A fixed plate (3) is symmetrically provided on one side of the main body (1). A worm gear (30) is rotatably connected between the two sets of fixed plates (3). A rotating motor (301) is provided on one side of the right fixed plate (3).

2. The industrial wastewater treatment sedimentation tank according to claim 1, characterized in that: A filter tank (110) is provided between the primary sedimentation tank (11) and the secondary sedimentation tank (12). Two sets of slots (111) are symmetrically provided on the inner walls of the filter tank (110) on opposite sides. A polypropylene filter plate (112) is provided in each of the two sets of slots (111). A fine permeable cloth (113) is provided on one side of the polypropylene filter plate (112).

3. The industrial wastewater treatment sedimentation tank according to claim 1, characterized in that: An overflow channel one (120) is provided between the secondary sedimentation tank (12) and the tertiary sedimentation tank (13), and an overflow channel two (130) is provided between the tertiary sedimentation tank (13) and the clear water tank (14).

4. The industrial wastewater treatment sedimentation tank according to claim 3, characterized in that: A stainless steel filter plate (131) is installed in the overflow trough (130), and a slot (140) is opened on the two opposite surfaces of the inner wall of the clear water tank (14), and an activated carbon filter plate (141) is installed in the slot (140).

5. The industrial wastewater treatment sedimentation tank according to claim 1, characterized in that: The main body (1) is equipped with a servo motor (132) on one side of the three-stage sedimentation tank (13). A stirring rod (133) is rotatably connected inside the three-stage sedimentation tank (13). Several stirring blades (134) are provided on the periphery of the stirring rod (133). A support plate (135) is provided on the upper surface of the three-stage sedimentation tank (13). A medicine box (136) is provided on the upper surface of the support plate (135).

6. The industrial wastewater treatment sedimentation tank according to claim 1, characterized in that: The main body (1) has an inlet (10) and an outlet (101) symmetrically arranged on one side. The inlet (10) is connected to the primary sedimentation tank (11), and the outlet (101) is connected to the clear water tank (14).

7. The industrial wastewater treatment sedimentation tank according to claim 1, characterized in that: The drain pipe (104) is connected to the collection tank (102), the first bevel gear (106) meshes with the second bevel gear (108), a protective shell (109) is provided on one side of the main body (1), the dual-head motor (107) is located inside the protective shell (109), and several heat dissipation vents are provided on one side of the inner wall of the protective shell (109).

8. The industrial wastewater treatment sedimentation tank according to claim 1, characterized in that: The output end of the rotating motor (301) is fixedly connected to one end of the worm (30). The worm (30) meshes with the worm wheel (201). A protective shell (202) is provided on one side of the main body (1). The worm (30), worm wheel (201) and rotating motor (301) are all located inside the protective shell (202). Several heat dissipation grooves are opened on one side of the inner wall of the protective shell (202).

9. The industrial wastewater treatment sedimentation tank according to claim 5, characterized in that: The output end of the servo motor (132) is fixedly connected to one end of the stirring rod (133). The upper surface of the medicine box (136) is provided with a medicine inlet. One side of the medicine box (136) is provided with a medicine outlet pipe (137). A solenoid valve is provided inside the medicine outlet pipe (137).

10. The industrial wastewater treatment sedimentation tank according to claim 6, characterized in that: The drain outlet (101) is located on the left side of the activated carbon filter plate (141).

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