Solar photovoltaic integrated sewage treatment system

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a solar photovoltaic integrated sewage treatment system which comprises an anoxic tank, an aeration tank and a sedimentation tank which are used for sequentially treating sewage, and the sewage treated by the aeration tank enters the sedimentation tank through a water inlet pipe. After being settled, the wastewater is discharged through a drainage pipe arranged at the top of the settling pond; two photovoltaic cell panels with opposite inclination directions are arranged at the tops of the anoxic tank and the sedimentation tank; the water inlet pipe extends to the inner top of the sedimentation tank and is fixedly connected with an energy releasing device; the energy releasing device is positioned above the liquid level of the inner top of the sedimentation tank; the energy releasing device comprises an energy releasing ring, and sewage in the water inlet pipe rushes into the energy releasing ring in the tangential direction of the energy releasing ring. The sedimentation tank can prevent high-speed flowing sewage from flushing up sludge settled at the bottom in the sedimentation tank, and is favorable for improving the sedimentation effect and the sedimentation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a solar photovoltaic integrated wastewater treatment system. Background Technology

[0002] Wastewater treatment is a process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Chinese utility model patent CN217351078U discloses an integrated wastewater treatment device, including a wastewater collection tank, an anaerobic tank, an aeration tank, and a sedimentation tank. The aeration tank is equipped with solar photovoltaic panels and a battery pack, and an aerator is mounted on it. A rotating cylinder is located inside the aeration tank, and a drive mechanism for raising and lowering the rotating cylinder is provided. The drive mechanism includes a drive motor fixedly connected to the upper end of the aeration tank. This technical solution, through the drive mechanism, uses a mounting plate to drive the rotating cylinder to reciprocate up and down, allowing air to be delivered to all parts of the aeration tank, enabling rapid mixing of air and wastewater, thereby improving the aeration effect. Additionally, a stirring motor, stirring plate, and stirring blades are included. The stirring plate and blades rotate with the rotating cylinder, accelerating the mixing of wastewater and air, thus improving the aeration effect and further enhancing the aeration efficiency of the wastewater.

[0003] However, the above technical solutions still have the following shortcomings in actual use: after the sewage is treated by the aeration tank, it is pumped into the sedimentation tank by the corresponding water pump, resulting in a high flow velocity of sewage when entering the sedimentation tank. As a result, the sludge at the bottom of the sedimentation tank is washed up by the sewage, affecting the actual sedimentation effect and sedimentation efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a solar photovoltaic integrated wastewater treatment system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A solar photovoltaic integrated wastewater treatment system includes an anoxic tank, an aeration tank, and a sedimentation tank for sequentially treating wastewater. Wastewater treated in the aeration tank enters the sedimentation tank through an inlet pipe, and after sedimentation, it is discharged through a drain pipe installed at the top of the sedimentation tank.

[0007] The top of the anoxic chamber and the sedimentation tank are equipped with two photovoltaic panels tilted in opposite directions.

[0008] The inlet pipe extends to the inner top of the sedimentation tank and is fixedly connected to an energy release device, which is located above the liquid level at the top of the sedimentation tank.

[0009] The energy release device includes an energy release ring, and the sewage in the inlet pipe flows into the interior of the energy release ring along the tangential direction.

[0010] Preferably, the energy release device further includes an upper baffle and a lower baffle, which are disposed at opposite positions and fixedly connected to the energy release ring, and both the upper baffle and the lower baffle are annular.

[0011] Preferably, the sedimentation tank is equipped with a buffer cover inside, the top of the buffer cover extends above the liquid surface at the top of the sedimentation tank, and the bottom of the buffer cover extends to the lower middle part of the sedimentation tank; wastewater flows into the top of the buffer cover after being de-energized by the energy release device.

[0012] Preferably, the buffer cover includes a conical cover and a cylinder coaxially fixed to the top of the conical cover, and the diameter of the conical cover gradually increases along the vertically downward direction.

[0013] Preferably, an overflow channel is provided on the top of the outer periphery of the sedimentation tank, and the drain pipe is connected to the overflow channel.

[0014] Preferably, a long shaft is fixedly connected to the center of the buffer cover via a connecting piece, and the long shaft is driven to rotate by a geared motor located at the top of the sedimentation tank;

[0015] The sedimentation tank is equipped with a sludge scraping component inside, which is used to scrape off the sludge settled on the outer circumference of the conical cover.

[0016] Preferably, the sludge scraping component includes a scraper and a mounting bracket fixedly connected between the scraper and the inner wall of the sedimentation tank, and a rubber strip is snapped onto the side of the scraper near the conical cover.

[0017] Preferably, the rubber strip has a lip on the side near the conical cover.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this invention, when sewage is pumped into the interior of the energy-relieving ring through a water pump and an inlet pipe, the sewage in the inlet pipe flows into the interior of the energy-relieving ring along the tangential direction. Therefore, the sewage in the inlet pipe will move in a circular motion along the inner circumference of the energy-relieving ring under its own flow velocity, thereby continuously slowing down its flow velocity. After its flow velocity decreases to a certain value, it will fall freely into the interior of the sedimentation tank under the action of gravity. This can prevent the high-speed flowing sewage from washing up the sludge settled at the bottom of the sedimentation tank, which is beneficial to improving the sedimentation effect and sedimentation efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the sedimentation tank of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a top view cross-sectional structural diagram of the energy release device of this utility model;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the scraper and rubber strip of this utility model.

[0025] In the diagram: 1. Anoxic chamber; 2. Aeration tank; 3. Sedimentation tank; 31. Inlet pipe; 32. Overflow channel; 33. Drain pipe; 4. Photovoltaic panel; 5. Buffer cover; 51. Conical cover; 52. Cylinder; 53. Connecting piece; 6. Long shaft; 7. Gear motor; 8. Energy release device; 81. Energy release ring; 82. Upper baffle; 83. Lower baffle; 91. Scraper; 92. Mounting bracket; 93. Rubber strip; 94. Lip. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model provides a technical solution:

[0028] A solar photovoltaic integrated wastewater treatment system includes an anoxic tank 1, an aeration tank 2, and a sedimentation tank 3 for sequential wastewater treatment. Wastewater treated in the aeration tank 2 enters the sedimentation tank 3 through an inlet pipe 31, undergoes sedimentation, and is then discharged through a drain pipe 33 located at the top of the sedimentation tank 3. The aforementioned wastewater treatment process and related equipment are existing technologies and will not be described in detail here. The technical solution of this utility model is to improve the sedimentation tank 3 in the aforementioned equipment to reduce the initial flow velocity of wastewater entering the sedimentation tank 3. The specific improvement scheme is as follows.

[0029] First, in this embodiment, the tops of the anoxic chamber 1 and the sedimentation tank 3 are equipped with two photovoltaic panels 4 tilted in opposite directions; as Figure 1As shown, the two photovoltaic panels 4 are set with opposite tilt directions, which is conducive to the long-term use of photovoltaic panels 4 to generate electricity for the anoxic tank 1, aeration tank 2, sedimentation tank 3, and corresponding water pumps.

[0030] The inlet pipe 31 extends to the inner top of the sedimentation tank 3 and is fixedly connected to the energy release device 8, which is located above the liquid surface at the top of the sedimentation tank 3. The energy release device 8 includes an energy release ring 81. The sewage in the inlet pipe 31 flows into the interior of the energy release ring 81 along the tangential direction. The basic working principle of the energy release device 8 is as follows: When the sewage is input into the interior of the energy release ring 81 through the water pump and the inlet pipe 31, since the energy release ring 81 is circular and the sewage in the inlet pipe 31 flows into the interior of the energy release ring 81 along the tangential direction, the sewage in the inlet pipe 31 will move in a circular motion along the inner circumference of the energy release ring 81 under its own flow velocity during the process of entering the energy release ring 81, thereby continuously slowing down its own flow velocity. After its flow velocity is reduced to a certain value, it will fall freely into the interior of the sedimentation tank 3 under the action of gravity. This can prevent the high-speed flowing sewage from washing up the sludge settled at the bottom of the sedimentation tank 3, which is conducive to improving the sedimentation effect and sedimentation efficiency.

[0031] Furthermore, to limit the flow direction of sewage within the energy-dissipating ring 81 and prevent sewage from splashing out in all directions, the energy-dissipating device 8 in this embodiment also includes an upper baffle 82 and a lower baffle 83, which are arranged at opposite ends and fixedly connected to the energy-dissipating ring 81. Both the upper baffle 82 and the lower baffle 83 are annular and are coaxially arranged with the energy-dissipating ring 81. The upper baffle 82 and the lower baffle 83 cooperate with each other to confine the sewage inside the energy-dissipating ring 81, preventing the sewage from splashing out from the upper and lower ends of the energy-dissipating ring 81. At the same time, the upper baffle 82 and the lower baffle 83 can also increase the friction force when the sewage flows, thereby improving the deceleration effect on the sewage.

[0032] To prevent significant fluctuations when the decelerated wastewater falls onto the surface of the liquid inside the sedimentation tank 3 (i.e., the wastewater to be settled), in this embodiment, a buffer cover 5 is installed to divide the liquid surface inside the sedimentation tank 3 into two parts, an inner and an outer part. Specifically, a buffer cover 5 is installed inside the sedimentation tank 3. The top of the buffer cover 5 extends above the liquid surface at the top of the sedimentation tank 3, and the bottom of the buffer cover 5 extends to the lower middle part of the sedimentation tank 3 (a small distance is left between the bottom of the buffer cover 5 and the sludge at the bottom of the sedimentation tank 3). The wastewater flows into the top of the buffer cover 5 after being de-energized by the energy release device 8. Its basic working principle is as follows: The top of the buffer cover 5 protrudes from the liquid surface inside the sedimentation tank 3, thus dividing the liquid surface into a part inside the buffer cover 5 and a part outside the buffer cover 5. After the wastewater is decelerated by the energy release device 8, it falls directly into the interior of the buffer cover 5 (that is, the part that enters the interior of the buffer cover 5). This can prevent the wastewater passing through the energy release device 8 from spreading directly to the surrounding area of ​​the liquid surface inside the sedimentation tank 3. This allows the wastewater passing through the energy release device 8 to enter a deeper part of the sedimentation tank 3 through the buffer cover 5 for sedimentation, ensuring the actual sedimentation effect and preventing a large amount of unsedimented impurities from remaining in the water discharged through the drain pipe 33.

[0033] In this embodiment, the buffer cover 5 includes a conical cover 51 and a cylinder 52 coaxially fixed to the top of the conical cover 51. The diameter of the conical cover 51 gradually increases along the vertical downward direction, thereby providing sufficient sedimentation space and buffer space for the sewage that enters the sedimentation tank 3 through the energy release device 8.

[0034] An overflow channel 32 is provided on the top of the outer periphery of the sedimentation tank 3, and the drain pipe 33 is connected to the overflow channel 32.

[0035] A long shaft 6 is fixedly connected to the center of the buffer cover 5 via a connecting piece 53. The long shaft 6 is driven to rotate by a geared motor 7 located at the top of the sedimentation tank 3. The geared motor 7 can be powered by the photovoltaic panel 4.

[0036] The sedimentation tank 3 is equipped with a sludge scraping component inside, used to scrape off the sludge settled on the outer circumference of the conical cover 51. Specifically, the sludge scraping component includes a scraper 91 and a mounting bracket 92 fixedly connected between the scraper 91 and the inner wall of the sedimentation tank 3. A rubber strip 93 is snapped and fixed on the side of the scraper 91 near the conical cover 51, and the specific snapping method of the rubber strip 93 is shown in the figure. A lip 94 is provided on the side of the rubber strip 93 near the conical cover 51. The material of the lip 94 is the same as that of the rubber strip 93, and the lip 94 is attached to the outer circumference of the conical cover 51. When the conical cover 51 is driven by the reduction motor 7 to rotate slowly, the lip 94 can scrape off the sludge settled on the outer circumference of the conical cover 51. In order to prevent the rotation of the conical cover 51 from affecting the sludge settled at the bottom of the sedimentation tank 3, the rotation speed of the conical cover 51 can be controlled at 0.5-1 r / min.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solar photovoltaic integrated wastewater treatment system, characterized in that, It includes an anoxic tank, an aeration tank, and a sedimentation tank for sequential treatment of wastewater. The wastewater treated in the aeration tank enters the sedimentation tank through an inlet pipe, and after sedimentation, it is discharged through a drain pipe installed at the top of the sedimentation tank. The top of the anoxic chamber and the sedimentation tank are equipped with two photovoltaic panels tilted in opposite directions. The inlet pipe extends to the inner top of the sedimentation tank and is fixedly connected to an energy release device, which is located above the liquid level at the top of the sedimentation tank. The energy release device includes an energy release ring, and the sewage in the inlet pipe flows into the interior of the energy release ring along the tangential direction.

2. The solar photovoltaic integrated wastewater treatment system according to claim 1, characterized in that, The energy release device also includes an upper baffle and a lower baffle, which are arranged at opposite positions and fixedly connected to the energy release ring. Both the upper baffle and the lower baffle are annular.

3. The solar photovoltaic integrated wastewater treatment system according to claim 1, characterized in that, The sedimentation tank is equipped with a buffer cover inside. The top of the buffer cover extends above the liquid surface at the top of the sedimentation tank, and the bottom of the buffer cover extends to the lower middle part of the sedimentation tank. Wastewater flows into the top of the buffer cover after being de-energized by the energy release device.

4. The solar photovoltaic integrated wastewater treatment system according to claim 3, characterized in that, The buffer cover includes a conical cover and a cylinder coaxially fixed to the top of the conical cover. The diameter of the conical cover gradually increases along the vertically downward direction.

5. The solar photovoltaic integrated wastewater treatment system according to claim 1, characterized in that, An overflow channel is provided on the top of the outer periphery of the sedimentation tank, and the drain pipe is connected to the overflow channel.

6. The solar photovoltaic integrated wastewater treatment system according to claim 4, characterized in that, A long shaft is fixedly connected to the center of the buffer cover via a connecting piece, and the long shaft is driven to rotate by a geared motor located at the top of the sedimentation tank. The sedimentation tank is equipped with a sludge scraping component inside, which is used to scrape off the sludge settled on the outer circumference of the conical cover.

7. The solar photovoltaic integrated wastewater treatment system according to claim 6, characterized in that, The sludge scraping component includes a scraper and a mounting bracket fixedly connected between the scraper and the inner wall of the sedimentation tank. A rubber strip is snapped and fixed to the side of the scraper near the conical cover.

8. The solar photovoltaic integrated wastewater treatment system according to claim 7, characterized in that, The rubber strip has a lip on the side near the conical cover.

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