Garbage leachate treatment device and process

Abstract

The present invention discloses a device and process for treating landfill leachate, and relates to the technical field of sewage treatment. The device for treating landfill leachate comprises a treatment tank, wherein a closing cover is provided on the top of the treatment tank, a first connecting column is fixedly connected to the bottom of the treatment tank, a supporting base plate is fixedly connected to the bottom of the first connecting column, and a fixed base plate is fixedly connected to the bottom of the supporting base plate. The device and process for treating landfill leachate slowly rotates a spiral push plate and a compression tank, wherein the rotation of the spiral push plate pushes impurities in the landfill leachate concentrate downward and gathers into the compression tank, and under the action of the rotating hollow tube, the impurities in the liquid gradually converge, and under the action of centrifugal force, the impurities gradually adhere to each other in the compression tank. When the first drive motor drives the rotating hollow tube to rotate at high speed, the impurity aggregates inside the treatment tank gather toward the edge, which can accelerate the sedimentation rate of impurities in the landfill leachate.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a device and process for treating landfill leachate. Background Art

[0002] Garbage is piled up in a centralized manner, and the internal garbage produces water through fermentation and decomposition. The leachate contains a large amount of pollutants with a high concentration. If it flows freely without treatment, it will cause serious environmental pollution. The land polluted by the leachate is not conducive to plant growth. Therefore, in the treatment of urban garbage, leachate treatment is required after incineration, otherwise it will cause secondary pollution.

[0003] Patent application number CN201010600135.3 discloses a method for treating landfill leachate. First, the landfill leachate is discharged into a regulating tank for 9 to 15 days to homogenize the water quality. The treated landfill leachate is then discharged into a coagulation reaction tank. A coagulant and a coagulant aid are then added to the landfill leachate for precipitation. The precipitated leachate is discharged into a heating system. The heated landfill leachate is pumped into an expanded granular sludge bed for anaerobic reaction. The reacted leachate is discharged into a sequential batch activated sludge reactor for aerobic reaction. The landfill leachate is filtered through a nanofiltration membrane of a nanofiltration system. The filtrate is discharged into a concentration tank for precipitation. The supernatant is returned to the regulating tank, and the precipitated sludge waste is discharged into a filter press.

[0004] When treating landfill leachate, existing equipment needs to transfer the landfill leachate to multiple tanks for treatment, and at the same time needs to wait for the impurities generated by the reaction to precipitate, which slows down the treatment speed of the landfill leachate. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and process for treating landfill leachate to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A landfill leachate treatment device includes a treatment tank, a closing cover is provided on the top of the treatment tank, a first connecting column is fixedly connected to the bottom of the treatment tank, a supporting base plate is fixedly connected to the bottom of the first connecting column, a fixed base plate is fixedly connected to the bottom of the supporting base plate, an ultraviolet sterilization lamp is fixedly connected to the top of the treatment tank at the bottom of the closing cover, a mixing mechanism is fixedly connected to the top of the treatment tank, and a silt discharge mechanism is fixedly connected to the outer wall of the treatment tank;

[0007] Hybrid institutions include:

[0008] A fixing frame, the fixing frame being fixedly connected to the top of the treatment tank;

[0009] a first drive motor, wherein the first drive motor is fixedly connected to the interior of the fixing frame;

[0010] The rotating hollow tube is fixedly connected to the bottom of the first driving motor, and the rotating hollow tube is fixedly connected to the output shaft of the first driving motor.

[0011] Preferably, two spiral push plates are fixedly connected to the outer wall of the rotating hollow tube, and the bottoms of the two spiral push plates are fixedly connected to compression grooves.

[0012] Preferably, an opening is provided on the outside of the compression groove, a limiting frame is fixedly connected to the outside of the compression groove, a stretching rod is movably connected inside the limiting frame, a sealing cover is fixedly connected to the inside of the stretching rod, and the sealing cover is located at a corresponding position of the compression groove opening, an ejection plate is fixedly connected to the outside of the stretching rod, and a limiting pressure spring is provided on the outside of the compression groove.

[0013] Preferably, three straight suction pipes are fixedly connected to the outside of the rotating hollow tube, the straight suction pipes are connected to the inside of the rotating hollow tube, a spiral plate is fixedly connected to the inside of the rotating hollow tube, and openings are provided on the outer wall of the rotating hollow tube at positions corresponding to the two compression grooves.

[0014] Preferably, the silt discharge mechanism includes an external groove, which is arranged on the outer wall of the treatment tank. A fixed arm is fixedly connected to the top of the treatment tank, and the fixed arm is fixedly connected to the outer wall of the treatment tank. A telescopic rod is fixedly connected to the bottom of the treatment tank, and a closing sleeve is fixedly connected to the bottom of the telescopic rod. A second connecting column is fixedly connected to the bottom of the closing sleeve, and a discharge plate is fixedly connected to the bottom of the second connecting column.

[0015] Preferably, the top of the fixed bottom plate is located at the bottom of the discharge plate and is fixedly connected to a polymerization groove, and the polymerization groove is provided with a notch.

[0016] Preferably, a pushing frame is movably connected to the inner side of the aggregation tank, a pushing plate is provided on the outer side of the pushing frame, the top of the fixed base plate is located on the inner side of the pushing frame and is fixedly connected to a second driving motor, the inner side of the pushing frame is provided with teeth, and a corresponding gear is provided on the top of the second driving motor, and the second driving motor can drive the pushing frame to rotate through the gear.

[0017] A treatment process for landfill leachate:

[0018] S1. First, the landfill leachate concentrate is placed into the treatment tank, and the first drive motor is started. The first drive motor then drives the rotating hollow tube to slowly rotate, thereby promoting the accumulation of impurities in the landfill leachate concentrate in the treatment tank. The telescopic rod is then rapidly extended to discharge the impurities in the treatment tank through the silt discharge mechanism.

[0019] S2. After the impurities are discharged, the telescopic rod is quickly retracted and reset, and then anaerobic bacteria are added to the treatment tank. The closing cover is closed, and the first drive motor drives the rotating hollow tube to rotate to promote the reaction of newly formed impurities, and the telescopic rod is quickly extended to discharge the newly formed impurities through the silt discharge mechanism;

[0020] S3. After the impurities are discharged, the ultraviolet germicidal lamp is turned on to inactivate the anaerobic bacteria inside the treatment pool;

[0021] S4. After inactivation, turn off the ultraviolet germicidal lamp, open the closed cover and add aerobic bacteria into the treatment tank;

[0022] S5. Wait until the water inside the treatment pool reaches the discharge standard and then pump it out for discharge.

[0023] The present invention provides a device for treating landfill leachate, which has the following beneficial effects:

[0024] 1. The device and process for treating landfill leachate slowly rotates a spiral push plate and a compression tank. The rotation of the spiral push plate pushes impurities in the landfill leachate concentrate downward and gathers into the compression tank. The impurities in the liquid are gradually gathered under the action of the rotating hollow tube, and the impurities are gradually adhered to each other in the compression tank under the action of centrifugal force. When the first drive motor drives the rotating hollow tube to rotate at a high speed, the impurity aggregates inside the treatment tank gather toward the edge, which can accelerate the sedimentation rate of impurities in the landfill leachate, thereby improving the treatment speed.

[0025] 2. The device and process for treating leachate are characterized by rapid extension of the telescopic rod, which allows the closing sleeve to move downward, and at the same time allows the closing sleeve to separate the external tank from the inside of the treatment tank. The discharge plate is driven to move downward, and the impurity polymers on the discharge plate are washed down by the residual liquid in the external tank. The impurities in the landfill leachate concentrate are discharged into the polymerization tank through the gap formed by the discharge plate and the external tank. The discharge is achieved without transferring the liquid, which saves the time for transferring the liquid and can greatly improve the treatment speed of the landfill leachate.

[0026] 3. The device and process for treating landfill leachate accelerates the rotation of the first drive motor, causing the arc surface of the push-out plate to hit the first connecting column, allowing it to move inward under the action of the arc surface of the push-out plate, and then move again under the action of centrifugal force to hit the first connecting column, generating vibration, which is transmitted to the discharge plate. Since the discharge plate is in an inclined state, the vibration of the discharge plate will promote the material adhered to the surface of the discharge plate to slide off the discharge plate, while preventing impurities from sticking to the discharge plate, increasing the speed of impurity discharge, and thus improving the speed of treating landfill leachate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a schematic diagram of the main three-dimensional structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the back three-dimensional structure of the present invention;

[0029] Figure 3 for Figure 1 Schematic diagram of cross-section structure;

[0030] Figure 4 This is a schematic diagram of the treatment pool structure of the present invention;

[0031] Figure 5 This is a schematic structural diagram of the first drive motor of the present invention;

[0032] Figure 6 This is a schematic diagram of the rotating hollow tube structure of the present invention;

[0033] Figure 7 for Figure 6 Schematic diagram of cross-section structure;

[0034] Figure 8 This is a schematic diagram of the limiting frame structure of the present invention;

[0035] Figure 9 for Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0036] Figure 10 for Figure 4 A schematic diagram of the enlarged structure of the middle B part;

[0037] Figure 11 It is a schematic diagram of the polymerization tank structure of the present invention.

[0038] In the figure: 1. treatment tank; 2. closing cover; 3. supporting base plate; 4. first connecting column; 5. ultraviolet germicidal lamp; 6. mixing mechanism; 601. fixing frame; 602. first driving motor; 603. rotating hollow tube; 604. spiral push plate; 605. compression groove; 606. limiting frame; 607. stretching rod; 608. pressure limiting spring; 609. sealing cover; 610. pushing plate; 611. suction straight pipe; 612. spiral plate; 7. sludge discharge mechanism; 701. external groove; 702. fixed support arm; 703. telescopic rod; 704. closing sleeve; 705. discharge plate; 706. second connecting column; 707. polymerization groove; 708. pushing frame; 709. second driving motor; 8. fixed base plate. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0041] Example 1: Please refer to Figure 1-9 The present invention provides a technical solution: a device for treating landfill leachate, comprising a treatment tank 1, a closing cover 2 being provided on the top of the treatment tank 1, a first connecting column 4 being fixedly connected to the bottom of the treatment tank 1, a supporting base plate 3 being fixedly connected to the bottom of the first connecting column 4, a fixed base plate 8 being fixedly connected to the bottom of the supporting base plate 3, an ultraviolet sterilization lamp 5 being fixedly connected to the bottom of the closing cover 2 at the top of the treatment tank 1, a mixing mechanism 6 being fixedly connected to the top of the treatment tank 1, and a silt discharge mechanism 7 being fixedly connected to the outer wall of the treatment tank 1;

[0042] The mixing mechanism 6 includes:

[0043] The fixing frame 601 is fixedly connected to the top of the treatment tank 1;

[0044] A first drive motor 602, which is fixedly connected to the interior of the fixing frame 601;

[0045] The rotating hollow tube 603 is fixedly connected to the bottom of the first driving motor 602 , and the rotating hollow tube 603 is fixedly connected to the output shaft of the first driving motor 602 .

[0046] First, the landfill leachate concentrate is placed into the treatment tank 1 , and the first drive motor 602 is started. Then, the first drive motor 602 drives the rotating hollow tube 603 to rotate slowly.

[0047] Two spiral push plates 604 are fixedly connected to the outer wall of the rotating hollow tube 603, and the bottoms of the two spiral push plates 604 are fixedly connected to compression grooves 605.

[0048] The rotating hollow tube 603 will synchronously cause the spiral push plate 604 and the compression tank 605 to rotate slowly. The rotation of the spiral push plate 604 will push the impurities in the landfill leachate concentrate to move downward and gather inside the compression tank 605. During the rotation of the rotating hollow tube 603, the impurities in the liquid will gradually gather, and under the action of centrifugal force, the impurities will gradually adhere to each other in the compression tank 605.

[0049] An opening is provided on the outside of the compression groove 605, and a limiting frame 606 is fixedly connected to the outside of the compression groove 605. A stretching rod 607 is movably connected inside the limiting frame 606. A sealing cover 609 is fixedly connected to the inside of the stretching rod 607, and the sealing cover 609 is located at a corresponding position of the opening of the compression groove 605. An ejection plate 610 is fixedly connected to the outside of the stretching rod 607, and a limiting pressure spring 608 is provided on the outside of the compression groove 605.

[0050] After the rotating hollow tube 603 rotates slowly for a certain period of time, the first driving motor 602 drives the rotating hollow tube 603 to rotate at a high speed, which will increase the speed of the compression groove 605, thereby increasing the centrifugal force on the push plate 610 and the sealing cover 609, and the pressure limiting spring 608 is pushed and compressed by the sealing cover 609, thereby moving the sealing cover 609 outward, so that the sealing cover 609 no longer blocks the opening on the compression groove 605, allowing the accumulated impurities to be discharged outward from the opening on the compression groove 605, and the impurities in the garbage leachate concentrate inside the treatment pool 1 are accumulated. The impurities are gathered together, and during the rotation of the push plate 610, the push plate 610 will push the impurity aggregates at the bottom of the treatment tank 1 to the edge. The maximum outer diameter of the spiral push plate 604 and the maximum outer diameter of the push plate 610 are smaller than the inner diameter of the treatment tank 1. This allows the inside of the treatment tank 1 to rotate, and there is a space between the rotating part and the inner wall of the treatment tank 1. Due to the action of centrifugal force, the impurities will deviate from the center of the treatment tank 1 and move to this part of the edge. Since the impurities are heavier than water, this part of the space will not be subject to any excessive disturbance, so that the impurities will settle in this part.

[0051] Three suction straight pipes 611 are fixedly connected to the outside of the rotating hollow tube 603, and the suction straight pipes 611 are connected to the inside of the rotating hollow tube 603. A spiral plate 612 is fixedly connected to the inside of the rotating hollow tube 603. Openings are provided on the outer wall of the rotating hollow tube 603 at positions corresponding to the two compression grooves 605. The liquid level at the rotating edge of the liquid inside the treatment pool 1 will move up, and when the suction straight pipe sucks in the liquid, it will suck in the upward part of the liquid.

[0052] During the rotation of the rotating hollow tube 603, the internal spiral plate 612 will push the liquid inside the rotating hollow tube 603 downward, and then the liquid will be discharged to the compression groove 605 through the corresponding opening. At the same time, the suction straight tube 611 will absorb the water flow that has retreated from the top edge due to rotation into the spiral plate 612. When the water flows into the compression groove 605, the impurities that have already accumulated in the compression groove 605 will be aggregated with the impurities discharged from the rotating hollow tube 603, and it will prevent the impurities from sticking to the inside of the compression groove 605. Moreover, when the rotation is slow, the water flow discharged into the compression groove 605 does not have a strong impact force. When the water flows toward the outer end of the compression groove 605, it will gradually lose its impact force due to resistance, and will not disperse the impurities. When the rotating hollow tube 603 accelerates, the water discharged from the rotating hollow tube 603 by the spiral plate 612 will promote the impurities aggregated on the compression groove 605 to gather toward the edge of the treatment tank 1.

[0053] Example 2: Please refer to Figure 1-11 Based on the first embodiment, the present invention provides a technical solution:

[0054] The silt discharge mechanism 7 includes an external groove 701, which is arranged on the outer wall of the treatment tank 1. A fixed arm 702 is fixedly connected to the top of the treatment tank 1, and the fixed arm 702 is fixedly connected to the outer wall of the treatment tank 1. A telescopic rod 703 is fixedly connected to the bottom of the treatment tank 1, and a closing sleeve 704 is fixedly connected to the bottom of the telescopic rod 703. A second connecting column 706 is fixedly connected to the bottom of the closing sleeve 704, and a discharge plate 705 is fixedly connected to the bottom of the second connecting column 706.

[0055] The first drive motor 602 drives the rotating hollow tube 603 to rotate and push the accumulated impurities to the edge of the treatment tank 1. As the first drive motor 602 rotates at high speed, the fixed frame 601 pushes the impurities accumulated inside the treatment tank 1 to the top of the discharge plate 705, allowing the telescopic rod 703 to extend quickly, thereby allowing the closing sleeve 704 to move downward, and at the same time allowing the closing sleeve 704 to separate the external tank 701 from the interior of the treatment tank 1. The discharge plate 705 will also move downward under the push of the second connecting column 706, thereby allowing the impurity polymers on the discharge plate 705 to be washed down by the residual liquid inside the external tank 701, and the impurities inside the landfill leachate concentrate are discharged from the gap formed by the discharge plate 705 and the external tank 701.

[0056] When the first drive motor 602 accelerates, the ejection plate 610 moves outward, and the arc surface of the ejection plate 610 hits the first connecting column 4, causing it to move inward under the action of the arc surface of the ejection plate 610, and then moves again under the action of centrifugal force to hit the first connecting column 4, generating vibration, which is transmitted to the discharge plate 705. Since the discharge plate 705 is in an inclined state, the vibration generated by the discharge plate 705 will promote the material adhered to the surface of the discharge plate 705 to slide off the discharge plate 705, thereby increasing the speed of impurity discharge.

[0057] The top of the fixed bottom plate 8 is located at the bottom of the discharge plate 705 and is fixedly connected to a polymerization groove 707, which is provided with a notch.

[0058] The impurities discharged by the discharge plate 705 enter the polymerization tank 707 .

[0059] A pushing frame 708 is movably connected to the inside of the aggregation groove 707, a pushing plate is provided on the outside of the pushing frame 708, the top of the fixed bottom plate 8 is located inside the pushing frame 708 and is fixedly connected to the second driving motor 709, the inside of the pushing frame 708 is provided with teeth, and a corresponding gear is provided on the top of the second driving motor 709. The second driving motor 709 can drive the pushing frame 708 to rotate through the gear.

[0060] The second drive motor 709 drives the corresponding gear to rotate, and then drives the push frame 708 to rotate through the tooth pattern, so that the impurities inside the aggregation tank 707 are pushed by the push plate outside the push frame 708, and discharged from the gap on the aggregation tank 707 under the action of centrifugal force, so as to facilitate the centralized treatment of impurities.

[0061] After the initial impurity removal of the landfill leachate concentrate, the telescopic rod 703 is quickly retracted and reset, and then anaerobic bacteria are added to the treatment tank 1. The closing cover 2 is closed, and the newly formed impurities are promoted to react through the mixing mechanism 6, and then the newly formed impurities are discharged through the silt removal mechanism 7.

[0062] Then the ultraviolet germicidal lamp 5 is started to inactivate the anaerobic bacteria inside the treatment tank 1 .

[0063] After inactivation, turn off the ultraviolet sterilization lamp 5, open the closing cover 2 and add aerobic bacteria into the treatment pool 1. After the water in the treatment pool 1 reaches the discharge standard, it can be pumped out and discharged.

[0064] Example 3: Please refer to Figure 1-11 Based on the first and second embodiments, the present invention provides a technical solution:

[0065] A treatment process for landfill leachate:

[0066] S1. First, the landfill leachate concentrate is placed into the treatment tank 1. The first drive motor 602 is started. The first drive motor 602 then slowly rotates the rotating hollow tube 603 to promote the accumulation of impurities in the landfill leachate concentrate in the treatment tank 1. The telescopic rod 703 is then rapidly extended to discharge the impurities in the treatment tank 1 through the silt discharge mechanism 7.

[0067] S2. After the impurities are discharged, the telescopic rod 703 is quickly retracted and reset, and then anaerobic bacteria are added to the treatment tank 1. The closing cover 2 is closed, and the first driving motor 602 drives the rotating hollow tube 603 to rotate to promote the reaction of newly formed impurities, so that the telescopic rod 703 is quickly extended to discharge the newly formed impurities through the silt discharge mechanism 7;

[0068] S3. After the impurities are discharged, the ultraviolet germicidal lamp 5 is started to inactivate the anaerobic bacteria inside the treatment pool 1;

[0069] S4, after inactivation, turn off the ultraviolet germicidal lamp 5, open the closing cover 2 and add aerobic bacteria into the treatment tank 1;

[0070] S5. Wait until the water inside the treatment pool 1 reaches the discharge standard and then pump it out for discharge.

[0071] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A landfill leachate treatment device, comprising a treatment tank, characterized in that: The top of the treatment tank is provided with a closing cover, the bottom of the treatment tank is fixedly connected to a first connecting column, the bottom of the first connecting column is fixedly connected to a supporting base plate, the bottom of the supporting base plate is fixedly connected to a fixed base plate, the top of the treatment tank is located at the bottom of the closing cover and is fixedly connected to an ultraviolet sterilization lamp, the top of the treatment tank is fixedly connected to a mixing mechanism, and the outer wall of the treatment tank is fixedly connected to a silt discharge mechanism; Hybrid institutions include: A fixing frame, the fixing frame being fixedly connected to the top of the treatment tank; a first drive motor, wherein the first drive motor is fixedly connected to the interior of the fixing frame; A rotating hollow tube, wherein the rotating hollow tube is fixedly connected to the bottom of the first drive motor and is fixedly connected to the output shaft of the first drive motor; Two spiral push plates are fixedly connected to the outer wall of the rotating hollow tube, and the bottoms of the two spiral push plates are fixedly connected to a compression groove; An opening is provided on the outside of the compression groove, a limiting frame is fixedly connected to the outside of the compression groove, a stretching rod is movably connected inside the limiting frame, a sealing cover is fixedly connected to the inside of the stretching rod, and the sealing cover is located at a corresponding position of the compression groove opening, a push-out plate is fixedly connected to the outside of the stretching rod, and a limited pressure spring is provided on the outside of the compression groove; Three straight suction pipes are fixedly connected to the outside of the rotating hollow tube, and the straight suction pipes are connected to the inside of the rotating hollow tube. A spiral plate is fixedly connected to the inside of the rotating hollow tube, and openings are provided on the outer wall of the rotating hollow tube at positions corresponding to the two compression grooves; The silt discharge mechanism includes an external groove, which is arranged on the outer wall of the treatment pool. A fixed arm is fixedly connected to the top of the treatment pool, and the fixed arm is fixedly connected to the outer wall of the treatment pool. A telescopic rod is fixedly connected to the bottom of the treatment pool, and a closing sleeve is fixedly connected to the bottom of the telescopic rod. A second connecting column is fixedly connected to the bottom of the closing sleeve, and a discharge plate is fixedly connected to the bottom of the second connecting column.

2. The device for treating landfill leachate according to claim 1, characterized in that: The top of the fixed bottom plate is located at the bottom of the discharge plate and is fixedly connected to a polymerization groove, and the polymerization groove is provided with a notch.

3. The device for treating landfill leachate according to claim 2, characterized in that: A pushing frame is movably connected to the inner side of the aggregation tank, a pushing plate is provided on the outer side of the pushing frame, the top of the fixed bottom plate is located inside the pushing frame and is fixedly connected to a second driving motor, the inner side of the pushing frame is provided with teeth, and a corresponding gear is provided on the top of the second driving motor. The second driving motor can drive the pushing frame to rotate through the gear.

4. A process for treating landfill leachate using the landfill leachate treatment device according to claim 3, characterized in that: S1. First, the landfill leachate concentrate is placed into the treatment tank, and the first drive motor is started. The first drive motor then drives the rotating hollow tube to slowly rotate, thereby promoting the accumulation of impurities in the landfill leachate concentrate in the treatment tank. The telescopic rod is then rapidly extended to discharge the impurities in the treatment tank through the silt discharge mechanism. S2. After the impurities are discharged, the telescopic rod is quickly retracted and reset, and then anaerobic bacteria are added to the treatment tank. The closing cover is closed, and the first drive motor drives the rotating hollow tube to rotate to promote the reaction of newly formed impurities, and the telescopic rod is quickly extended to discharge the newly formed impurities through the silt discharge mechanism; S3. After the impurities are discharged, the ultraviolet germicidal lamp is turned on to inactivate the anaerobic bacteria inside the treatment pool; S4. After inactivation, turn off the ultraviolet germicidal lamp, open the closed cover and add aerobic bacteria into the treatment tank; S5. Wait until the water inside the treatment pool reaches the discharge standard and then pump it out for discharge.

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