Wastewater treatment system integrating solar energy and biological energy

Abstract

The invention provides a wastewater treatment system integrating solar energy and biological energy, which is applied to the field of sewage treatment and comprises a multi-stage pretreatment pool and an anaerobic biological reaction tank, a sewage delivery pipe is arranged at the bottom of the anaerobic biological reaction tank, and a three-phase separator is arranged at the top of the anaerobic biological reaction tank. A mixing mechanism and a driving mechanism are arranged at the bottom of the anaerobic biological reaction tank; an anaerobic delivery pipe is arranged at the bottom of the anaerobic biological reaction tank, and a filtering mechanism for treating anaerobic biological carrier particles is arranged on one side of the outer wall of the anaerobic biological reaction tank; a solar photovoltaic panel and a storage battery are arranged on the anaerobic biological reaction tank; by integrating solar energy and biological energy, the operation cost can be reduced, and cyclic utilization of energy is achieved. And the mixing mechanism and the driving mechanism are in close cooperative operation, so that anaerobic biological carrier particles and sewage are fully mixed, the anaerobic biological reaction efficiency is improved, and the wastewater treatment effect is further improved.

Description

Technical Field

[0001] This application relates to the field of sewage treatment, and particularly to a wastewater treatment system integrating solar energy and bioenergy. Background Art

[0002] With the rapid development of industrialization and urbanization, the amount of wastewater generated has increased sharply, and wastewater treatment has become a key link in environmental protection.

[0003] Traditional wastewater treatment systems have problems such as high energy consumption, low treatment efficiency, and secondary pollution to the environment. At the same time, the energy crisis is becoming increasingly prominent, and seeking renewable and clean energy for wastewater treatment has become a trend in the industry's development. Solar energy, as an inexhaustible clean energy, and bioenergy (such as biogas) generated during the wastewater treatment process, if effectively integrated and utilized, will bring new breakthroughs to wastewater treatment. However, existing wastewater treatment systems have technical defects in aspects such as the coordinated utilization of solar energy and bioenergy, and the recycling of biological carrier particles during the anaerobic biological treatment process. For example, the mixing reaction efficiency between anaerobic organisms and sewage is low, the energy consumption is high, and it is difficult to achieve efficient and sustainable wastewater treatment. Therefore, a wastewater treatment system integrating solar energy and bioenergy is proposed. Summary of the Invention

[0004] The purpose of this application is to solve the technical problems of low mixing reaction efficiency between anaerobic organisms and sewage and high energy consumption in existing sewage treatment technologies. Compared with the prior art, a wastewater treatment system integrating solar energy and bioenergy is provided, including a multi-stage pretreatment tank and an anaerobic biological reaction tank. A sewage delivery pipe is provided at the bottom of the anaerobic biological reaction tank. The multi-stage pretreatment tank inputs the pretreated sewage into the anaerobic biological reaction tank through the sewage delivery pipe, and a one-way valve is provided in the sewage delivery pipe;

[0005] A three-phase separator is provided at the top of the anaerobic biological reaction tank, and a mixing mechanism is provided at the bottom of the anaerobic biological reaction tank. The mixing mechanism is used to reciprocate up and down at the top of the anaerobic biological reaction tank and mix the anaerobic biological carrier particles and the sewage discharged from the multi-stage pretreatment tank evenly and then discharge them into the top of the anaerobic biological reaction tank. A driving mechanism for driving the mixing mechanism to reciprocate up and down is also provided in the anaerobic biological reaction tank;

[0006] An anaerobic delivery pipe for inputting anaerobic biological carrier particles is provided at the bottom of the anaerobic biological reaction tank, and a filtering mechanism for treating anaerobic biological carrier particles is provided on one side of the outer wall of the anaerobic biological reaction tank;

[0007] A solar photovoltaic panel and a storage battery are provided on the anaerobic biological reaction tank.

[0008] Furthermore, the solar photovoltaic panel is electrically connected to the storage battery through an inverter. A partition chamber is also provided on the outer wall of the anaerobic bioreactor, and a spiral electric heating tube is arranged in the partition chamber. The spiral electric heating tube is electrically connected to the storage battery.

[0009] Furthermore, the mixing mechanism includes a partition plate. A sealing piston ring is rotatably connected to the circumferential side of the partition plate. The sealing piston ring abuts against the inner wall of the bottom of the anaerobic bioreactor. A plurality of mixing blades are arranged at the bottom of the partition plate. A plurality of sewage pipes corresponding to the number of the mixing blades are arranged in the partition plate. The lower port of the sewage pipe is arranged on the end face of the mixing blade, and the upper port of the sewage pipe is arranged on one side of the top of the partition plate.

[0010] A one-way sealing mechanism is further fixed on the top of the partition plate. The one-way sealing mechanism is used to block the upper port of the sewage pipe during the upward movement of the partition plate and open the upper port of the sewage pipe during the downward movement of the partition plate.

[0011] A spiral groove is arranged at the top of the anaerobic delivery pipe. A nut seat matching the spiral groove is arranged at the bottom of the partition plate. The nut seat is rotatably connected to the bottom of the partition plate through a ratchet mechanism in a one-way manner.

[0012] A feeding rod is further arranged inside the top of the anaerobic delivery pipe.

[0013] Furthermore, the one-way sealing mechanism includes an inner ring and an outer ring. The inner ring is fixed to the top of the partition plate through a bolt structure. A plurality of elastic plates are equally divided and fixed between the inner ring and the outer ring at equal angles. A sealing pad matching the upper port is fixed to the bottom of the outer ring. The elastic plate has an elastic force to drive the outer ring close to the upper port.

[0014] Furthermore, an anaerobic storage bin is further arranged in the partition plate. The discharge port of the anaerobic storage bin is communicated with the middle part of the sewage pipe. The feeding port of the anaerobic storage bin is arranged on one side close to the anaerobic delivery pipe.

[0015] Sealing inner rings are fixed on both the upper and lower sides of the feeding port of the partition plate. The sealing inner rings abut against the outer wall of the anaerobic delivery pipe. An end cover is further arranged at the top of the anaerobic delivery pipe. A tension spring is fixed between the end cover and the top of the anaerobic delivery pipe. A spiral blade is arranged at the bottom of the feeding rod. The top of the feeding rod is rotatably connected to the middle of the end cover. An actuating skirt matching the sealing inner ring is further arranged on the circumferential outer side of the end cover.

[0016] Further, the driving mechanism includes a driving motor fixed to the top of the anaerobic bioreactor. The driving motor is driven by electric energy provided by a storage battery. A driving rod is fixed to the output end of the driving motor and extends into the anaerobic bioreactor. A relay shaft is provided at the bottom of the driving rod. A limiting slider is provided at the top of the relay shaft. A vertical limiting groove corresponding to the limiting slider is provided at the bottom of the driving rod. A... is clamped between the limiting slider and the vertical limiting groove;

[0017] The bottom of the relay shaft is rotatably connected to the top of the partition plate. A first magnetic coupler is also provided at the bottom of the relay shaft;

[0018] Stirring blades are also fixed to the outer wall of the driving rod.

[0019] Further, a transmission shaft is also fixed to the inner side of the top of the partition plate. The transmission shaft is slidably sleeved on the top of the feeding rod. A second magnetic coupler is also fixed to the bottom of the transmission shaft.

[0020] Further, a pressure sensor is also fixed to the bottom of the execution skirt.

[0021] Further, an elastic sealing film is fixed to the bottom of the nut seat. The bottom end of the elastic sealing film is rotatably connected to one side of the outer wall of the anaerobic delivery pipe.

[0022] Further, the biogas separated by the three-phase separator is transported to the biogas collection device through a pipeline, and the heat energy generated by the combustion of the biogas is converted into electric energy that can be stored in the storage battery by a biogas internal combustion generator. The solids separated by the three-phase separator are transported into the filtering mechanism through a pipeline and are transported into the anaerobic delivery pipe after being processed by the filtering mechanism. The sewage separated by the three-phase separator enters the next-level treatment equipment.

[0023] Compared with the prior art, the advantages of this application are as follows:

[0024] By integrating solar energy and bioenergy, the present invention can reduce the degree of dependence on the external power grid, reduce the operating cost, realize the recycling of energy, and conform to the concept of sustainable development; through the close cooperation of the mixing mechanism with the partition plate, relay shaft and anaerobic silo, the driving mechanism and the anaerobic delivery pipe, the reciprocating movement up and down of the mixing mechanism at the bottom of the anaerobic bioreactor can be utilized to promote the full mixing of anaerobic biological carrier particles and sewage, and discharge them into the top of the anaerobic bioreactor, improving the anaerobic biological reaction efficiency and further enhancing the wastewater treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of this application;

[0026] Figure 2Schematic structural diagram of the anaerobic bioreactor proposed in this application;

[0027] Figure 3 Schematic cross-sectional structure diagram of the anaerobic bioreactor proposed in this application;

[0028] Figure 4 is Figure 3 Schematic enlarged structure diagram of part A in

[0029] Figure 5 Schematic structural diagram of the mixing mechanism proposed in this application;

[0030] Figure 6 Schematic exploded structure diagram of the mixing mechanism proposed in this application;

[0031] Figure 7 Schematic bottom structure diagram of the mixing mechanism proposed in this application;

[0032] Figure 8 Schematic partial cross-sectional structure diagram of the one-way sealing mechanism proposed in this application;

[0033] Figure 9 Schematic structural diagram of the anaerobic delivery pipe and the feeding rod proposed in this application;

[0034] Figure 10 Schematic cross-sectional structure diagram of the mixing mechanism proposed in this application;

[0035] Figure 11 is Figure 10 Schematic enlarged structure diagram of part B in

[0036] Figure 12 Schematic displacement path diagram of anaerobic biological carrier particles when the partition plate moves up to the highest point in this application;

[0037] Figure 13 Schematic displacement path diagram of anaerobic biological carrier particles when the partition plate moves down in this application.

[0038] Explanation of reference numerals in the figure:

[0039] 1. Multi-stage pretreatment tank;

[0040] 2. Anaerobic bioreactor; 21. Driving motor; 22. Three-phase separator; 23. Compartment; 24. Driving rod; 241. Stirring blade; 242. Vertical limiting groove; 243. Tension spring; 25. Sewage delivery pipe; 251. Check valve;

[0041] 3. Solar photovoltaic panel;

[0042] 4. Storage battery;

[0043] 5. Filter mechanism;

[0044] 6. Mixing mechanism; 61. Partition board; 611. Inner sealing ring; 612. Mixing blades; 62. One-way sealing mechanism; 621. Inner ring; 622. Elastic plate; 623. Outer ring; 624. Sealing gasket; 63. Relay shaft; 631. First magnetic coupler; 632. Limit slider; 64. Sealing piston ring; 65. Nut seat; 66. Anaerobic material bin; 661. Feed inlet; 662. Discharge port; 67. Sewage pipe; 671. Upper port; 672. Lower port; 68. Transmission shaft; 681. Second magnetic coupler;

[0045] 7. Anaerobic delivery pipe; 71. Spiral groove; 72. End cover; 721. Tension spring; 722. Execution skirt;

[0046] 8. Feeding rod; 81. Spiral blades;

[0047] 9. Elastic sealing membrane. Specific implementation mode

[0048] In the embodiments, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings of the specification. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present application.

[0049] Embodiment:

[0050] The present invention provides a wastewater treatment system integrating solar energy and bioenergy. Please refer to Figure 1 - Figure 13 , the core of the system is jointly composed of a multi-stage pretreatment tank 1 and an anaerobic biological reaction tank 2. The multi-stage pretreatment tank 1 undertakes the key task of wastewater pretreatment in the multi-stage sewage treatment. Among them, the wastewater first enters the multi-stage pretreatment tank, and large-particle suspended solids and sundries are intercepted and removed through the grille to prevent them from blocking the subsequent treatment equipment. Subsequently, it enters the grit chamber, and inorganic particles such as sand grains in the wastewater are removed by using the principle of gravity sedimentation. In the regulation tank, the water quality and water volume of the wastewater are balanced and regulated to ensure the stable operation of the subsequent anaerobic biological reaction tank 2.

[0051] Please refer to Figure 4 , a sewage delivery pipe 25 is provided at the bottom of the anaerobic biological reaction tank 2. The multi-stage pretreatment tank 1 inputs the pretreated sewage into the anaerobic biological reaction tank 2 through the sewage delivery pipe 25, and a one-way valve 251 is provided in the sewage delivery pipe 25;

[0052] Please refer to Figure 3, at the top of the anaerobic bioreactor 2, there is a three-phase separator 22. Its main function is to efficiently separate gas, liquid, and solid phases. In this application, the main separated substances are biogas, sewage, and biomass filler. The biomass filler uses anaerobic biological carrier particles as the filler medium. Microorganisms continuously aggregate and multiply on the surface of the filler medium, gradually forming granular substances. The biogas separated by the three-phase separator 22 is transported through a pipeline to a biogas collection device, and a biogas internal combustion generator is used to convert the thermal energy generated by burning biogas into electrical energy that can be stored in the storage battery 4, realizing the efficient utilization of bioenergy. The solids separated by the three-phase separator 22 are transported through a pipeline into the filtering mechanism 5 and, after being processed by the filtering mechanism 5, are transported into the anaerobic delivery pipe 7. The sewage separated by the three-phase separator 22 enters the next-level treatment equipment.

[0053] Please refer to Figure 3-11 , at the bottom of the anaerobic bioreactor 2, on the one hand, a mixing mechanism 6 is equipped, and on the other hand, there is an anaerobic delivery pipe 7 for injecting anaerobic biological carrier particles. Driven strongly by a driving mechanism, the mixing mechanism 6 can move up and down reciprocally, thus fully mixing the anaerobic biological carrier particles and sewage evenly; on one side of the outer wall of the anaerobic bioreactor 2, a filtering mechanism 5 is installed. Its duty is to filter the solids separated by the three-phase separator 22, which include anaerobic biological carrier particles, and transport the processed particles back to the anaerobic delivery pipe 7; moreover, a solar photovoltaic panel 3 and a storage battery 4 are also mounted on the anaerobic bioreactor 2. The solar photovoltaic panel 3 is electrically connected to the storage battery 4 through an inverter, thereby stably powering some equipment in the system, including heating the spiral electric heating tube in the partition chamber 23, and can accurately adjust the temperature in the anaerobic bioreactor 2 according to actual needs, creating the most suitable living environment for anaerobic microorganisms.

[0054] Please refer to Figure 3-11 , the mixing mechanism 6 includes a partition plate 61. A sealing piston ring 64 is rotatably connected to the circumferential side of the partition plate 61. The partition plate 61 of the mixing mechanism 6 is in close contact with the inner wall of the bottom of the anaerobic bioreactor 2 through the sealing piston ring 64, thereby ensuring the sliding sealing performance between the partition plate 61 and the inner wall of the anaerobic bioreactor 2. Pretreated sewage can be transported to the bottom of the partition plate 61 through the sewage delivery pipe 25, and the partition plate 61 is lifted by the water pressure of pumping to the highest position for standby;

[0055] Please refer to Figure 6-7 , several mixing blades 612 are provided at the bottom of the partition plate 61. Several sewage pipes 67 corresponding to the number of the mixing blades 612 are provided inside the partition plate 61. The lower port 672 of the sewage pipe 67 is arranged on the end face of the mixing blade 612, and the upper port 671 of the sewage pipe 67 is arranged on one side of the top of the partition plate 61;

[0056] Please refer to Figure 6 andFigure 8 At the top of the partition plate 61, a one-way sealing mechanism 62 is also fixed. The one-way sealing mechanism 62 is used to block the upper port 671 of the sewage pipe 67 during the upward movement of the partition plate 61 and open the upper port 671 of the sewage pipe 67 when the partition plate 61 moves downward. Specifically, the one-way sealing mechanism 62 includes an inner ring 621 and an outer ring 623. A ceramic wear-resistant layer is fixed on the outer edge of the outer ring 623. The inner ring 621 is fixed to the top of the partition plate 61 by a bolt structure. A number of elastic plates 622 are evenly fixed between the inner ring 621 and the outer ring 623 at equal angles. A sealing gasket 624 matching the upper port 671 is fixed to the bottom of the outer ring 623. The elastic plate 622 has an elastic force to drive the outer ring 623 to approach the upper port 671.

[0057] When the partition plate 61 moves upward under the action of the bottom water pressure, the outer ring 623 uses the friction force with the inner wall of the anaerobic bioreactor 2 and the elastic force of the elastic plate 622 to keep the sealing gasket 624 blocking the upper port 671, maintaining the sealing of the sewage pipe 67 during the upward movement of the partition plate 61.

[0058] Please refer to Figure 9 and Figure 4 At the top of the anaerobic delivery pipe 7, a spiral groove 71 is provided. At the bottom of the partition plate 61, a nut seat 65 matching the spiral groove 71 is provided. The nut seat 65 is unidirectionally rotatably connected to the bottom of the partition plate 61 through a ratchet mechanism. To maintain the sealing between the nut seat 65 and the anaerobic delivery pipe 7 during displacement, an elastic sealing film 9 is fixed to the bottom of the nut seat 65. The bottom end of the elastic sealing film 9 is rotatably connected to one side of the outer wall of the anaerobic delivery pipe 7.

[0059] Inside the top of the anaerobic delivery pipe 7, a feeding rod 8 is also provided, which is specifically used to cooperate with the delivery of anaerobic biological carrier particles.

[0060] Specifically, an anaerobic material bin 66 is also provided inside the partition plate 61. The discharge port 662 of the anaerobic material bin 66 is communicated with the middle part of the sewage pipe 67. The feed port 661 of the anaerobic material bin 66 is arranged on one side close to the anaerobic delivery pipe 7.

[0061] Sealing inner rings 611 are fixed on both the upper and lower sides of the feed port 661 of the partition plate 61. The sealing inner rings 611 are in contact with the outer wall of the anaerobic delivery pipe 7. A end cover 72 is also provided at the top of the anaerobic delivery pipe 7. A tension spring 721 is fixed between the end cover 72 and the top of the anaerobic delivery pipe 7. A spiral blade 81 is provided at the bottom of the feeding rod 8. The top of the feeding rod 8 is rotatably connected to the middle of the end cover 72. An execution skirt 722 matching the sealing inner ring 611 is also provided on the circumferential outer side of the end cover 72. A pressure sensor is fixed to the bottom of the execution skirt 722. A transmission shaft 68 is also fixed to the inner side of the top of the partition plate 61. The transmission shaft 68 is slidably sleeved on the top of the feeding rod 8. A second magnetic coupling 681 is fixed to the bottom of the transmission shaft 68.

[0062] The driving mechanism includes a driving motor 21 fixed on the top of the anaerobic biological reactor 2. The driving motor 21 is driven by the electric energy provided by the battery 4. A driving rod 24 is fixed to the output end of the driving motor 21 and extends to the interior of the anaerobic biological reactor 2. A stirring blade 241 is also fixed to the outer wall of the driving rod 24, which is used to stir the sewage located on the top of the partition 61 in the anaerobic biological reactor 2, thereby improving the efficiency of anaerobic microorganisms in decomposing organic matter in the wastewater and converting it into biogas and carbon dioxide.

[0063] A relay shaft 63 is provided at the bottom of the driving rod 24, a limit slider 632 is provided at the top of the relay shaft 63, a vertical limit groove 242 corresponding to the limit slider 632 is provided at the bottom of the driving rod 24, 243 is clamped between the limit slider 632 and the vertical limit groove 242, the bottom of the relay shaft 63 is rotatably connected to the top of the partition 61, and a first magnetic coupler 631 is also provided at the bottom of the relay shaft 63. It should be noted that in the present application, the magnetic components of the first magnetic coupler 631 and the second magnetic coupler 681 are both electromagnetic structures, and the opening and closing states of the first magnetic coupler 631 and the second magnetic coupler 681 can be electrically controlled.

[0064] See also Figure 1 - Figure 13 , the specific operation process:

[0065] Wastewater pretreatment: The wastewater first flows into the multi-stage pretreatment tank 1, where the larger particles of impurities are removed through the effective interception of the grid to complete the initial purification work. The initially purified wastewater smoothly enters the anaerobic biological reactor 2 under the guidance of the sewage delivery pipe 25 and the one-way valve 251.

[0066] Inside the anaerobic biological reactor 2, when the sewage water pressure delivered by the sewage delivery pipe 25 lifts the partition plate 61 to the designed height, the sealing inner ring 611 at the top contacts the execution skirt 722 of the end cover 72, so that the end cover 72 overcomes the elastic force of the tension spring 721 and moves upward, so that the top of the anaerobic delivery pipe 7 is in an open state;

[0067] Please refer to the Figure 12, at the same time, since a pressure sensor is installed on the skirt 722, the drive motor 21, the first magnetic coupler 631 and the second magnetic coupler 681 are all started at this time. The start of the first magnetic coupler 631 transmits the power of the drive rod 24 to the relay shaft 63, and the start of the second magnetic coupler 681 transmits the power of the relay shaft 63 to the feeding rod 8. At this time, the forward rotation of the feeding rod 8 and the spiral blade 81 causes the anaerobic biological carrier particles in the anaerobic conveying pipe 7 to be conveyed into the anaerobic silo 66 through the feeding port 661. At the same time, the forward rotation of the partition plate 61 causes the anaerobic biological carrier particles in the anaerobic silo 66 to enter the sewage pipe 67 through the centrifugal force through the discharge port 662. Since the upper port 671 is blocked by the one-way sealing mechanism 62, the anaerobic biological carrier particles are discharged to the bottom of the partition plate 61 through the lower port 672 and mixed with the sewage. Since the anaerobic biological carrier particles fall from above and cooperate with the rotation of the mixing blade 612, the mixing is made uniform. It should be noted that during the forward rotation of the partition plate 61, the mixing blade 612 rotates in the direction away from the lower port 672. At the same time, the nut seat 65 freely rotates at the bottom of the partition plate 61 through the ratchet mechanism and does not cooperate with the spiral groove 71;

[0068] Please refer to Figure 13 , when the mixing time reaches the design value, the drive motor 21 rotates in the reverse direction, causing the partition plate 61 to rotate in the reverse direction. At this time, the nut seat 65 is restricted from rotating relative to the partition plate 61 through the ratchet mechanism and cooperates with the spiral groove 71. Under the guiding action of the spiral groove 71, the partition plate 61 starts to rotate and move downward. During this process, since a one-way valve 251 is provided at the sewage conveying pipe 25, the sewage at the bottom of the partition plate 61 will not be discharged reversely through the sewage conveying pipe 25. During the process of the sealing inner ring 611 following the partition plate 61 moving downward, the end cover 72 moves downward by the elastic force of the tension spring 721 and closes the upper end of the anaerobic conveying pipe 7 to prevent sewage from mixing into the anaerobic conveying pipe 7. At the same time, the one-way sealing mechanism 62 is subjected to the upward frictional force of the anaerobic biological reaction tank 2, making the upper port 671 in an open state. During the reverse rotation of the partition plate 61, the mixing blade 612 rotates in the direction close to the lower port 672. On the one hand, the mixing effect is strengthened, and on the other hand, the sewage uniformly mixed with anaerobic biological carrier particles is discharged to the top of the anaerobic biological reaction tank through the sewage pipe 67 until the partition plate 61 moves down to the lowest position for the next cycle.

[0069] The mixture after anaerobic reaction in the anaerobic bioreactor 2 enters the three-phase separator 22. Under the efficient operation of the three-phase separator 22, biogas, solids, and treated sewage are successfully separated. The separated biogas is transported to the biogas collection device through a dedicated pipeline. In the biogas collection device, the heat energy generated by burning biogas is converted into electrical energy by a biogas internal combustion generator and stored in the storage battery 4. The separated solids, which contain anaerobic biological carrier particles, enter the filtering mechanism 5. After being filtered by the filtering mechanism 5, they are re-injected into the anaerobic bioreactor 2 through the anaerobic delivery pipe 7 to continue participating in the subsequent treatment process. The treated sewage enters the next-level treatment equipment for further treatment.

[0070] Energy supply and regulation: The solar photovoltaic panel 3 continuously collects solar energy and efficiently converts it into electrical energy for storage in the storage battery 4; during the operation of the system, the storage battery 4 supplies stable power to equipment such as the drive motor 21 and the spiral electric heating tube according to the actual operation requirements of the system. The spiral electric heating tube precisely adjusts the temperature in the anaerobic bioreactor 2 according to the preset temperature to ensure that the activity of anaerobic microorganisms is always in the best state.

[0071] By integrating solar energy and bioenergy, the present invention can reduce the degree of dependence on the external power grid, lower the operating cost, achieve the recycling of energy, and conform to the concept of sustainable development; the mixing mechanism 6 and the drive mechanism work closely together to promote the full mixing of anaerobic biological carrier particles and sewage, improve the anaerobic biological reaction efficiency, and thus enhance the wastewater treatment effect.

[0072] The above description is only the best implementation mode adopted by the present application in combination with the current actual needs, but the protection scope of the present application is not limited thereto.

Claims

1. A wastewater treatment system integrating solar energy and bioenergy, comprising a multi-stage pretreatment tank (1) and an anaerobic bioreactor (2), characterized in that, The bottom of the anaerobic bioreactor (2) is provided with a sewage delivery pipe (25). The multi-stage pretreatment tank (1) inputs the pretreated sewage into the anaerobic bioreactor (2) through the sewage delivery pipe (25), and a one-way valve (251) is arranged in the sewage delivery pipe (25). The top of the anaerobic bioreactor (2) is provided with a three-phase separator (22). The bottom of the anaerobic bioreactor (2) is provided with a mixing mechanism (6). The mixing mechanism (6) is used to reciprocate up and down at the top of the anaerobic bioreactor (2) and mix the anaerobic biological carrier particles evenly with the sewage discharged from the multi-stage pretreatment tank (1), and then discharge them into the top of the anaerobic bioreactor (2). A driving mechanism for driving the mixing mechanism (6) to reciprocate up and down is also arranged in the anaerobic bioreactor (2). The bottom of the anaerobic bioreactor (2) is provided with an anaerobic delivery pipe (7) for inputting anaerobic biological carrier particles. One side of the outer wall of the anaerobic bioreactor (2) is provided with a filtering mechanism (5) for treating anaerobic biological carrier particles. The anaerobic bioreactor (2) is provided with a solar photovoltaic panel (3) and a storage battery (4).

2. The wastewater treatment system integrating solar energy and bioenergy according to claim 1, characterized in that, The solar photovoltaic panel (3) is electrically connected to the storage battery (4) through an inverter. A partition chamber (23) is also arranged on the outer wall of the anaerobic bioreactor (2), and a spiral electric heating tube is arranged in the partition chamber (23). The spiral electric heating tube is electrically connected to the storage battery (4).

3. The wastewater treatment system integrating solar energy and bioenergy according to claim 1, characterized in that, The mixing mechanism (6) includes a partition plate (61). A sealing piston ring (64) is rotatably connected to the circumferential side of the partition plate (61). The sealing piston ring (64) abuts against the bottom inner wall of the anaerobic bioreactor (2). A plurality of mixing blades (612) are arranged at the bottom of the partition plate (61). A plurality of sewage pipes (67) corresponding to the number of the mixing blades (612) are arranged in the partition plate (61). The lower port (672) of the sewage pipe (67) is arranged on the end face of the mixing blade (612), and the upper port (671) of the sewage pipe (67) is arranged on one side of the top of the partition plate (61). A one-way sealing mechanism (62) is also fixed to the top of the partition plate (61). The one-way sealing mechanism (62) is used to block the upper port (671) of the sewage pipe (67) during the upward movement of the partition plate (61) and open the upper port (671) of the sewage pipe (67) during the downward movement of the partition plate (61). A spiral groove (71) is arranged at the top of the anaerobic delivery pipe (7). A nut seat (65) matching the spiral groove (71) is arranged at the bottom of the partition plate (61). The nut seat (65) is unidirectionally rotatably connected to the bottom of the partition plate (61) through a ratchet mechanism. A feeding rod (8) is also arranged inside the top of the anaerobic delivery pipe (7).

4. An integrated solar and bioenergy wastewater treatment system according to claim 3, characterized in that, The one-way sealing mechanism (62) includes an inner ring (621) and an outer ring (623). The inner ring (621) is fixed to the top of the partition plate (61) by a bolt structure. A number of elastic plates (622) are evenly fixed at equal angles between the inner ring (621) and the outer ring (623). A sealing gasket (624) matching the upper port (671) is fixed to the bottom of the outer ring (623). The elastic plate (622) has an elastic force that drives the outer ring (623) to approach the upper port (671).

5. An integrated solar and bioenergy wastewater treatment system according to claim 3, characterized in that, An anaerobic silo (66) is further provided inside the partition plate (61). The discharge port (662) of the anaerobic silo (66) is communicated with the middle part of the sewage pipe (67). The feed port (661) of the anaerobic silo (66) is arranged on one side close to the anaerobic conveying pipe (7). Sealing inner rings (611) are fixed on both the upper and lower sides of the partition plate (61) at the feed port (661). The sealing inner rings (611) are in contact with the outer wall of the anaerobic conveying pipe (7). A end cover (72) is further provided at the top of the anaerobic conveying pipe (7). A tension spring (721) is fixed between the end cover (72) and the top of the anaerobic conveying pipe (7). A spiral blade (81) is provided at the bottom of the feeding rod (8). The top of the feeding rod (8) is rotatably connected to the middle of the end cover (72). An actuating skirt (722) matching the sealing inner ring (611) is further provided on the circumferential outer side of the end cover (72).

6. The wastewater treatment system integrating solar energy and bioenergy according to claim 5, characterized in that, The driving mechanism includes a driving motor (21) fixed to the top of the anaerobic bioreactor (2). The driving motor (21) is driven by electric energy provided by a storage battery (4). The output end of the driving motor (21) is fixed with a driving rod (24) which extends into the anaerobic bioreactor (2). A relay shaft (63) is provided at the bottom of the driving rod (24). A limiting slider (632) is provided at the top of the relay shaft (63). A vertical limiting groove (242) corresponding to the limiting slider (632) is provided at the bottom of the driving rod (24). A (243) is clamped between the limiting slider (632) and the vertical limiting groove (242). The bottom of the relay shaft (63) is rotatably connected to the top of the partition plate (61). A first magnetic coupler (631) is further provided at the bottom of the relay shaft (63). Stirring blades (241) are further fixed to the outer wall of the driving rod (24).

7. An integrated solar and bioenergy wastewater treatment system according to claim 5, characterized in that, A transmission shaft (68) is further fixed to the inner side of the top of the partition plate (61). The transmission shaft (68) is slidably sleeved on the top of the feeding rod (8). A second magnetic coupler (681) is fixed to the bottom of the transmission shaft (68).

8. An integrated solar and bioenergy wastewater treatment system according to claim 5, characterized in that, A pressure sensor is further fixed to the bottom of the actuating skirt (722).

9. An integrated solar and bioenergy wastewater treatment system according to claim 3, characterized in that, An elastic sealing film (9) is fixed to the bottom of the nut seat (65). The bottom end of the elastic sealing film (9) is rotatably connected to one side of the outer wall of the anaerobic conveying pipe (7).

10. The wastewater treatment system integrating solar energy and bioenergy according to claim 1, characterized in that, The biogas separated by the three-phase separator (22) is transported to the biogas collection device through a pipeline, and the heat energy generated by the combustion of the biogas is converted into electric energy that can be stored in the storage battery (4) by using a biogas internal combustion generator. The solids separated by the three-phase separator (22) are transported into the filtering mechanism (5) through a pipeline, and after being processed by the filtering mechanism (5), they are transported into the anaerobic delivery pipe (7). The sewage separated by the three-phase separator (22) enters the next-stage treatment equipment.

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