Clarifier Outlet System

Abstract

The present disclosure provides a water outlet system for a clarifier, and relates to the field of water treatment technology. The water outlet system includes a sedimentation tank and a guide plate, wherein: the sedimentation tank includes a water inlet and a water outlet, the water inlet is connected to the flocculation tank, and the flocculated water in the flocculation tank enters the sedimentation tank through the water inlet; the distance between the water outlet and the bottom surface of the sedimentation tank is greater than or equal to two-thirds of the depth of the sedimentation tank, and the water flow after sedimentation in the sedimentation tank flows out through the water outlet; the guide plate is arranged in the water outlet, and the guide plate includes a first side edge and a second side edge that are relatively distributed, and the first side edge and the second side edge are respectively connected to the inner wall of the water outlet, and the angle between the guide plate and the central axis of the water outlet is greater than or equal to 30° and less than or equal to 60°. The water outlet system of the present disclosure can improve the cleanliness of the outlet water.

Description

Technical Field

[0001] The present disclosure relates to the technical field of water treatment, and in particular to a water outlet system of a clarifier. Background Art

[0002] In the water treatment process, the clarifier is a crucial link. However, due to the influence of the structural design of the traditional clarifier, it is easy to cause the settled impurities to be re-rolled and mixed into the effluent water, resulting in poor clarification effect.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] The present invention provides a water outlet system for a clarifier, which can improve the cleanliness of the outlet water.

[0005] According to one aspect of the present disclosure, a water outlet system of a clarifier is provided, the water outlet system comprising:

[0006] The sedimentation tank comprises a water inlet and a water outlet, wherein the water inlet is connected to the flocculation tank, and the flocculated water in the flocculation tank enters the sedimentation tank through the water inlet; the distance between the water outlet and the bottom surface of the sedimentation tank is greater than or equal to two-thirds of the depth of the sedimentation tank, and the water in the sedimentation tank flows out through the water outlet after sedimentation;

[0007] A guide plate is arranged in the water outlet, and the guide plate includes a first side and a second side that are relatively distributed. The first side and the second side are respectively connected to the inner wall of the water outlet, and the angle between the guide plate and the central axis of the water outlet is greater than or equal to 30° and less than or equal to 60°.

[0008] In an exemplary embodiment of the present disclosure, the water outlet is in a trumpet shape.

[0009] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0010] a coagulation tank, connected to the flocculation tank;

[0011] A coagulant dosing pump, comprising a coagulant dosing pipe, the coagulant dosing pipe extends into the coagulation tank and is used to dosing coagulant into the coagulation tank;

[0012] The first agitator is arranged in the coagulation tank and is used for agitating the coagulant and the water flow to be coagulated in the coagulation tank; the coagulated water flow formed after agitation flows to the flocculation tank.

[0013] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0014] A flocculant dosing pump, comprising a flocculant dosing pipe, the flocculant dosing pipe extends into the flocculation tank and is used to dosing flocculant into the flocculation tank;

[0015] The second agitator is arranged in the flocculation tank and is used for agitating the flocculant and the water flow to be flocculated in the flocculation tank; the flocculated water flow formed after agitation flows to the sedimentation tank through the water inlet.

[0016] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0017] A sludge scraper is arranged in the sedimentation tank, and is used to scrape the sludge in the sedimentation tank into the discharge channels located on both sides of the sedimentation tank;

[0018] The sludge discharge pump comprises a sludge discharge pipe, wherein the sludge discharge pipe extends deep into the sedimentation tank, and the sludge discharge pump can discharge sludge when the mud level in the sedimentation tank exceeds a preset value.

[0019] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0020] The sludge return pump comprises a return pipe and a discharge pipe which are interconnected. The return pipe extends into the sedimentation tank, and the discharge pipe extends into the flocculation tank. The sludge return pump extracts the sludge in the sedimentation tank through the return pipe, and transports the sludge extracted by the return pipe to the flocculation tank through the discharge pipe.

[0021] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0022] The sludge interface meter is arranged in the sedimentation tank and is used to monitor the sludge level in the sedimentation tank.

[0023] In an exemplary embodiment of the present disclosure, the sludge interface meter is electrically connected to the sludge return pump, and the sludge interface meter transmits the sludge level height to the sludge return pump.

[0024] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0025] The ultrasonic mud level meter is arranged in the sedimentation tank and is used to detect the mud level height in the sedimentation tank. The ultrasonic mud level meter is electrically connected to the sludge discharge pump and transmits the mud level height to the sludge discharge pump.

[0026] In an exemplary embodiment of the present disclosure, the water outlet system further includes:

[0027] The water-producing mother pipe is connected to the water outlet of the sedimentation tank. A turbidity meter and a pH analyzer are arranged in the water-producing mother pipe. The turbidity meter is used to detect the turbidity of the water flow output from the sedimentation tank, and the pH analyzer is used to detect the pH of the water flow output from the sedimentation tank.

[0028] In the water outlet system of the clarification tank disclosed in the present invention, sludge and impurities are usually deposited at the bottom of the sedimentation tank over time. By setting the water outlet at a position more than two-thirds of the depth of the sedimentation tank (far away from the bottom of the tank), the water flow in the sedimentation tank can be less disturbed by the bottom sludge and / or impurities when flowing out through the water outlet, and the sludge deposited at the bottom of the sedimentation tank can be avoided, which helps to improve the cleanliness of the effluent. At the same time, this position also helps to maintain the stability of the water level in the sedimentation tank, provides good conditions for solid-liquid separation, and helps to further improve the clarification effect of the water quality. In addition, since the angle between the guide plate and the central axis of the water outlet is between 30° and 60°, the turbulence of the water flow can be reduced, ensuring that the water flow will not form a vortex that can stir the bottom sludge and / or impurities during the outflow process, avoiding the sludge and / or impurities from being accidentally brought out, which helps to improve the clarity of the effluent.

[0029] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the water outlet system of the clarification tank in the embodiment of the present disclosure.

[0032] Figure 2 It is a top view of the water outlet system of the clarification tank in the embodiment of the present disclosure.

[0033] Figure 3 It is a cross-sectional view of the water outlet of the sedimentation tank in the embodiment of the present disclosure.

[0034] Figure 4 Schematic diagram of a guide plate in an embodiment of the present disclosure.

[0035] In the figure: 1, sedimentation tank; 11, side wall; 111, inner wall; 112, outer wall; 101, water inlet; 102, water outlet; 2, flocculation tank; 3, guide plate; 31, first side; 32, second side; 4, coagulation tank; 5, first agitator; 6, second agitator; 7, scraper; 8, sludge discharge pump; 81, sludge discharge pipe; 9, sludge return pump; 91, return pipe; 92, discharge pipe; 10, sludge interface meter; 20, ultrasonic mud level meter. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0037] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0038] The terms "a", "an", "the" and "said" are used to indicate the presence of one or more elements / components / etc.; the term "comprising" is used to indicate an open-ended inclusive meaning and means that there may be additional elements / components / etc. in addition to the listed elements / components / etc. The terms "first", "second" and "third" are used only as labels and are not intended to limit the quantity of their objects.

[0039] The present disclosure provides a water outlet system for a clarifier. Figure 1-Figure 4 As shown, the water outlet system may include a sedimentation tank 1 and a guide plate 3, wherein:

[0040] The sedimentation tank 1 includes a water inlet 101 and a water outlet 102. The water inlet 101 is connected to the flocculation tank 2. The flocculated water in the flocculation tank 2 enters the sedimentation tank 1 through the water inlet 101. The distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 is greater than or equal to two-thirds of the depth of the sedimentation tank 1. The water in the sedimentation tank 1 flows out through the water outlet 102 after sedimentation.

[0041] The guide plate 3 is arranged in the water outlet 102, and the guide plate 3 includes a first side 31 and a second side 32 that are relatively distributed. The first side 31 and the second side 32 are respectively connected to the inner wall of the water outlet 102, and the angle between the guide plate 3 and the central axis of the water outlet 102 is greater than or equal to 30° and less than or equal to 60°.

[0042] In the water outlet system of the clarification tank disclosed in the present invention, sludge and impurities are usually deposited at the bottom of the sedimentation tank over time. By setting the water outlet 102 at a position more than two-thirds of the depth of the sedimentation tank 1 (far away from the bottom of the tank), the water flow in the sedimentation tank 1 can be less disturbed by the bottom sludge and / or impurities when it flows out through the water outlet 102, and the sludge deposited at the bottom of the sedimentation tank 1 can be avoided, which helps to improve the cleanliness of the effluent. At the same time, this position also helps to maintain the stability of the water level in the sedimentation tank 1, provides good conditions for solid-liquid separation, and helps to further improve the clarification effect of the water quality. In addition, since the angle between the guide plate 3 and the central axis of the water outlet 102 is between 30° and 60°, the turbulence of the water flow can be reduced, ensuring that the water flow will not form a vortex that can stir the bottom sludge and / or impurities during the outflow process, avoiding the sludge and / or impurities from being accidentally brought out, which helps to improve the clarity of the effluent.

[0043] The following is a detailed description of the various parts and specific details of the effluent system of the clarifier in the embodiment of the present disclosure:

[0044] Please continue to see Figure 1 and Figure 2 As shown, the clarification tank may include a coagulation tank 4, a flocculation tank 2 and a sedimentation tank 1, wherein:

[0045] The coagulation tank 4 is located upstream of the flocculation tank 2. The coagulation tank 4 can be connected to the flocculation tank 2, and raw water can enter the coagulation tank 4; the raw water can be sewage, rainwater, industrial wastewater, water in a reservoir or other water available for treatment, which is not specifically limited here. The number of coagulation tanks 4 can be multiple, and multiple coagulation tanks 4 can be distributed in parallel. Multiple coagulation tanks 4 can be connected to the flocculation tank 2 respectively, or multiple coagulation tanks 4 can be connected to each other, and at least one of the multiple coagulation tanks 4 is connected to the flocculation tank 2. The effluent system of the clarification tank disclosed in the present invention can also include a coagulant dosing pump (not shown in the figure), and the coagulant dosing pump can include a coagulant delivery pipe, which can penetrate into the coagulation tank 4, and the coagulant entering the coagulant dosing pump can be added to the coagulation tank 4 through the coagulant delivery pipe. The material of the coagulant delivery pipe can be a corrosion-resistant material, for example, it can be polyvinyl chloride (PVC) or stainless steel.

[0046] In some embodiments of the present disclosure, there may be multiple coagulant delivery pipes, and the delivery outlets of the multiple coagulant delivery pipes are respectively located at different positions in the coagulation tank 4, and coagulants can be delivered to different areas of the coagulation tank 4 at the same time, which helps to fully mix the coagulant with the water flow to be coagulated, thereby improving the coagulation efficiency. It should be noted that when there are multiple coagulant tanks 4, each coagulation tank 4 can be deeply provided with multiple coagulant delivery pipes.

[0047] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 1 and Figure 2 As shown, the effluent system of the clarification tank of the present disclosure may also include a first agitator 5, which may be arranged in the coagulation tank 4. When the coagulant dosing pump delivers the coagulant, the first agitator 5 stirs the water flow to be coagulated to promote the contact between the coagulant molecules and the suspended particles in the water flow to be coagulated, thereby accelerating the coagulation process. After the coagulant is combined with the water flow to be coagulated, the suspended matter and colloids in the water flow to be coagulated can form larger particles, so as to facilitate subsequent precipitation or filtration. At the same time, the coagulant can also increase the flocculation of the activated sludge, that is, improve the sedimentation performance and dewatering performance of the sludge. This helps to improve the mud-water separation efficiency, thereby maintaining the good operating state of the activated sludge. In the subsequent flocculation process, the coagulant can also remove pollutants such as organic matter, chromaticity, turbidity, etc. that have not been completely degraded during the flocculation process. It should be noted that when the coagulant dosing pump fails, the first agitator 5 stops working to avoid ineffective work, which helps to reduce power consumption.

[0048] In some embodiments of the present disclosure, the coagulated water flow formed after stirring can flow into the flocculation tank 2. The clarification tank effluent system of the present disclosure may also include a flocculant dosing pump (not shown in the figure), and the flocculant dosing pump may include a flocculant delivery pipe, and the flocculant delivery pipe may penetrate into the flocculation tank 2. The flocculant entering the flocculant dosing pump can be delivered into the flocculation tank 2 through the flocculant delivery pipe. The material of the flocculant delivery pipe may be a corrosion-resistant material, for example, the material of the flocculant delivery pipe may be polyethylene or rigid polyvinyl chloride.

[0049] In some embodiments of the present disclosure, please continue to refer to Figure 1 and Figure 2As shown, the effluent system of the clarification tank of the present disclosure may also include a second agitator 6, which may be arranged in the flocculation tank 2. When the flocculant dosing pump feeds the flocculant, the second agitator 6 may stir the water flow to be flocculated (i.e., the water flow to be flocculated after being treated with a coagulant) to promote the contact between the flocculant molecules and the suspended particles in the water flow to be flocculated, thereby effectively promoting the impurity particles in the water flow to be flocculated to coagulate into large particles and settle, thereby forming a flocculated water flow. The flocculated water flow formed after stirring by the second agitator 6 may flow into the sedimentation tank 1. It should be noted that when the flocculant dosing pump fails, the second agitator 6 stops working to avoid ineffective work, which helps to reduce power consumption.

[0050] Please continue to see Figure 1 and Figure 2 As shown, the sedimentation tank 1 can be arranged downstream of the flocculation tank 2. The sedimentation tank 1 can be cylindrical. Please continue to refer to Figure 1 , Figure 3 and Figure 4 As shown, a water inlet 101 and a water outlet 102 may be provided on the side wall 11 of the sedimentation tank 1, and both the water inlet 101 and the water outlet 102 may penetrate the sedimentation tank 1 along the thickness direction of the side wall 11 of the sedimentation tank 1. The water inlet 101 may be connected to the flocculation tank 2, and the flocculated water in the flocculation tank 2 may enter the sedimentation tank 1 through the water inlet 101, and the flocculated water may flow out through the water outlet 102 after being precipitated in the sedimentation tank 1. The distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 is greater than or equal to two-thirds of the depth of the sedimentation tank 1. For example, the distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 may be two-thirds of the depth of the sedimentation tank 1; or, the distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 may be three-quarters of the depth of the sedimentation tank 1; or, the distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 may be four-fifths of the depth of the sedimentation tank 1; of course, the distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 may also be other proportions, which are not listed here one by one. Since the distance between the water outlet 102 and the bottom surface of the sedimentation tank 1 is greater than or equal to two-thirds of the depth of the sedimentation tank 1, this position is relatively far from the bottom surface of the sedimentation tank 1, so that when the water flow in the sedimentation tank 1 flows out through the water outlet 102, the disturbance to the bottom sludge and / or impurities is small, and the sludge and / or impurities deposited at the bottom of the sedimentation tank 1 can be avoided, which helps to improve the cleanliness of the effluent. At the same time, this position also helps to maintain the water level in the sedimentation tank 1 stable, provides good conditions for solid-liquid separation, and helps to further improve the clarification effect of water quality.

[0051] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 3 and Figure 4 As shown, the shape of the water outlet 102 may be a trumpet shape. Figure 3As shown, the opening size of the water outlet 102 can be gradually increased in the direction from the outer wall 112 of the sedimentation tank 1 to the inner wall 111 thereof. When water flows through the trumpet-shaped water outlet 102, the flow rate will be reduced accordingly, which helps the suspended particles and solids in the water to settle better, thereby improving the sedimentation effect.

[0052] Please continue to see Figure 4 As shown, the guide plate 3 can be arranged in the water outlet 102, and the guide plate 3 may include a first side edge 31 and a second side edge 32 that are relatively distributed. The first side edge 31 and the second side edge 32 may be respectively contacted and connected with the inner wall of the water outlet 102. For example, the first side edge 31 and the second side edge 32 may be respectively connected to the inner wall of the water outlet 102 by bolts or screws; or, the first side edge 31 and the second side edge 32 may be respectively clamped with the inner wall of the water outlet 102.

[0053] In an exemplary embodiment of the present disclosure, the angle between the guide plate 3 and the central axis of the water outlet 102 may be greater than or equal to 30°, and less than or equal to 60°. Since the angle between the guide plate 3 and the central axis of the water outlet 102 is between 30° and 60°, the turbulence of the water flow can be reduced in the process of the water flow after sedimentation flowing out of the sedimentation tank 1, ensuring that the water flow will not form a vortex that can stir the bottom sludge and / or impurities during the outflow process, avoiding the sludge and / or impurities from being accidentally brought out, and helping to improve the clarity of the outlet water. For example, the angle between the guide plate 3 and the central axis of the water outlet 102 may be 30°, 40°, 45°, 50° or 60°. Of course, it can also be other angles, which are not listed here one by one.

[0054] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 1 and Figure 2 As shown, the effluent system of the clarifier of the present disclosure may also include a sludge scraper 7 and a sludge discharge pump 8, such as Figure 2 As shown, the scraper 7 can be arranged in the sedimentation tank 1, and can be used to scrape the sludge in the sedimentation tank 1 into the discharge channels on both sides of the sedimentation tank 1. The sludge discharge pump 8 can include a sludge discharge pipe 81, and the sludge discharge pipe 81 can penetrate into the sedimentation tank 1. The sludge discharge pump 8 can discharge the sludge when the mud level in the sedimentation tank 1 exceeds a preset value; that is, at this time, the sludge discharge pump 8 and the scraper 7 work at the same time, which helps to improve the sludge discharge efficiency and avoid the torque of the scraper 7 being too high to damage the motor of the scraper 7.

[0055] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 2As shown, the effluent system of the clarification tank of the present disclosure may also include a sludge return pump 9, which may include a return pipe 91 and a discharge pipe 92 that are interconnected. The return pipe 91 may extend into the sedimentation tank 1, and the discharge pipe 92 may extend into the flocculation tank 2. The sludge return pump 9 may extract the sludge in the sedimentation tank 1 through the return pipe 91, and at the same time, the sludge extracted from the return pipe 91 is transported to the flocculation tank 2 through the discharge pipe 92 to achieve sludge return. The sludge return can ensure that the sludge concentration in the flocculation tank 2 is maintained within a certain range, which is conducive to the growth and reproduction of microorganisms, thereby improving the water treatment efficiency; at the same time, the returned sludge can supplement the biological bacteria in the flocculation tank 2, and the returned sludge can continue to serve as a biological carrier, so as to retrieve part of the lost activated sludge colonies and replenish the lost carbon source.

[0056] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 1 and Figure 2 As shown, the effluent system of the clarification tank of the present disclosure may also include a sludge interface meter 10, which may be arranged in the sedimentation tank 1 and may be used to monitor the mud level in the sedimentation tank 1. The sludge interface meter 10 may be electrically connected to the sludge return pump 9, and the sludge interface meter 10 may transmit the mud level monitored by it to the sludge return pump 9. When the mud level received by the sludge return pump 9 exceeds the first mud level, the sludge return pump 9 may be automatically turned on, and then the sludge in the sedimentation tank 1 may be pumped out, and the pumped sludge may be discharged into the flocculation tank 2. For example, the sludge return pump 9 may include a control system and a pump body, and the sludge interface meter 10 may be electrically connected to the control system in the sludge return pump 9, and the sludge interface meter 10 may feed back the monitored mud level to the control system in the sludge return pump 9. When the mud level received by the control system exceeds the first mud level, the pump body may be controlled to work. At the same time, the control system may also adjust the working frequency of the pump body according to the specific value of the mud level, so that the mud level in the sedimentation tank 1 is maintained within a set range.

[0057] In some embodiments of the present disclosure, the effluent system of the clarification tank of the present disclosure may further include a display (not shown in the figure), which may be electrically connected to the sludge interface meter 10, and the mud level height monitored by the sludge interface meter 10 may be displayed in real time on the display, so that the staff can understand the mud level status in the sedimentation tank 1 in real time.

[0058] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 2As shown, the effluent system of the clarification tank of the present disclosure may also include an ultrasonic mud level meter 20, which may be arranged in the sedimentation tank 1, and may be used to detect the mud level height in the sedimentation tank 1. The ultrasonic mud level meter 20 may be electrically connected to the sludge discharge pump 8, and the ultrasonic mud level meter 20 may transmit the mud level height detected by it to the sludge discharge pump 8. When the mud level height received by the sludge discharge pump 8 exceeds the second mud level (i.e., the preset value), the sludge discharge pump 8 may be automatically turned on, and then the sludge in the sedimentation tank 1 may be extracted, and the extracted sludge may be discharged into the flocculation tank 2; when the mud level height received by the sludge discharge pump 8 is lower than the third mud level (i.e., the preset value), the sludge discharge pump 8 may be automatically turned off. The first mud level may be less than the second mud level, and the third mud level may be less than the second mud level and greater than the first mud level. It should be noted that when the sludge discharge pump 8 starts to work, the sludge return pump 9 may stop working.

[0059] In an exemplary embodiment of the present disclosure, the effluent system of the clarification tank of the present disclosure may further include a water-producing mother pipe (not shown in the figure), which may be connected to the water outlet 102 of the sedimentation tank 1. A turbidity meter and a pH analyzer may be provided in the water-producing mother pipe, wherein the turbidity meter may be used to detect the turbidity of the water flow output from the sedimentation tank 1, and the pH analyzer may be used to detect the pH of the water flow output from the sedimentation tank 1. The dosage of the coagulant and flocculant may be adjusted by the turbidity and pH of the water flow in the water-producing mother pipe to optimize the water quality.

[0060] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A clarifier water outlet system, characterized in that: The water outlet system comprises: The sedimentation tank comprises a water inlet and a water outlet, wherein the water inlet is connected to the flocculation tank, and the flocculated water in the flocculation tank enters the sedimentation tank through the water inlet; the distance between the water outlet and the bottom surface of the sedimentation tank is greater than or equal to two-thirds of the depth of the sedimentation tank, and the water in the sedimentation tank flows out through the water outlet after sedimentation; A guide plate is arranged in the water outlet, and the guide plate includes a first side and a second side that are relatively distributed. The first side and the second side are respectively connected to the inner wall of the water outlet, and the angle between the guide plate and the central axis of the water outlet is greater than or equal to 30° and less than or equal to 60°.

2. The effluent system of the clarifier according to claim 1, characterized in that: The water outlet is in a trumpet shape.

3. The effluent system of the clarifier according to claim 1, characterized in that: The water outlet system also includes: a coagulation tank, connected to the flocculation tank; A coagulant dosing pump, comprising a coagulant dosing pipe, the coagulant dosing pipe extends into the coagulation tank and is used to dosing coagulant into the coagulation tank; The first agitator is arranged in the coagulation tank and is used for agitating the coagulant and the water flow to be coagulated in the coagulation tank; the coagulated water flow formed after agitation flows to the flocculation tank.

4. The effluent system of the clarifier according to claim 1, characterized in that: The water outlet system also includes: A flocculant dosing pump, comprising a flocculant dosing pipe, the flocculant dosing pipe extends into the flocculation tank and is used to dosing flocculant into the flocculation tank; The second agitator is arranged in the flocculation tank and is used for agitating the flocculant and the water flow to be flocculated in the flocculation tank; the flocculated water flow formed after agitation flows to the sedimentation tank through the water inlet.

5. The effluent system of the clarifier according to claim 1, characterized in that: The water outlet system also includes: A sludge scraper is arranged in the sedimentation tank, and is used to scrape the sludge in the sedimentation tank into the discharge channels located on both sides of the sedimentation tank; The sludge discharge pump comprises a sludge discharge pipe, wherein the sludge discharge pipe extends deep into the sedimentation tank, and the sludge discharge pump can discharge sludge when the mud level in the sedimentation tank exceeds a preset value.

6. The effluent system of the clarifier according to claim 1, characterized in that: The water outlet system also includes: The sludge return pump comprises a return pipe and a discharge pipe which are interconnected. The return pipe extends into the sedimentation tank, and the discharge pipe extends into the flocculation tank. The sludge return pump extracts the sludge in the sedimentation tank through the return pipe, and transports the sludge extracted by the return pipe to the flocculation tank through the discharge pipe.

7. The effluent system of the clarifier according to claim 6, characterized in that: The water outlet system also includes: The sludge interface meter is arranged in the sedimentation tank and is used to monitor the sludge level in the sedimentation tank.

8. The effluent system of the clarifier according to claim 7, characterized in that: The sludge interface meter is electrically connected to the sludge return pump, and the sludge interface meter transmits the sludge level height to the sludge return pump.

9. The effluent system of the clarifier according to claim 5, characterized in that: The water outlet system also includes: The ultrasonic mud level meter is arranged in the sedimentation tank and is used to detect the mud level height in the sedimentation tank. The ultrasonic mud level meter is electrically connected to the sludge discharge pump and transmits the mud level height to the sludge discharge pump.

10. The effluent system of the clarifier according to claim 1, characterized in that: The water outlet system also includes: The water-producing mother pipe is connected to the water outlet of the sedimentation tank. A turbidity meter and a pH analyzer are arranged in the water-producing mother pipe. The turbidity meter is used to detect the turbidity of the water flow output from the sedimentation tank, and the pH analyzer is used to detect the pH of the water flow output from the sedimentation tank.

Images