Rural sewage treatment system with multiple energy supply modes

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a multi-energy supply mode rural sewage treatment system which comprises a purification system and a power supply system, the power supply system comprises a solar array, a storage battery pack connected with the solar array, a transformer connected with the storage battery pack, a gas storage tank connected with the biogas digester, and a biogas generator connected with the gas storage tank and the storage battery pack. Sludge is used as a base material to manufacture biogas, bacteria in sediment are killed by the ozone tank through the arrangement of the ozone tank, the bacteria in the sediment are prevented from competing for organic matters with biogas bacteria in the biogas digester and affecting the yield of the biogas, and the biogas generated by the biogas digester is used for generating electricity through the arrangement of the biogas generator and the gas storage tank and is stored in the storage battery pack. When the solar array cannot generate enough electric energy, energy can be supplemented to the storage battery pack, and the operation of the sewage treatment system can be maintained.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a rural wastewater treatment system with multiple energy supply modes. Background Technology

[0002] Rural sewage treatment refers to the treatment of domestic sewage generated in rural areas through a series of effective technologies and methods to reduce its pollution to the environment and water resources.

[0003] The rural domestic sewage treatment device with photovoltaic drive and solar heating control disclosed in CN115611467B includes a photovoltaic drive system, a solar heating system, and a sewage treatment system. The photovoltaic drive system includes photovoltaic modules, a photovoltaic controller, a battery pack, an inverter, and a distribution box. The solar heating system includes a solar water tank, a vacuum tube collector, an insulated hot water tank, a PLC controller, and a circulating water pump. The sewage treatment system includes a screen well, an equalization tank, an anoxic tank, a pulse biological filter, and a composite constructed wetland connected in sequence.

[0004] However, when the aforementioned photovoltaic-driven rural domestic sewage treatment device with combined solar heating control is in use, it uses photovoltaic modules to supply power to the various electrical appliances. However, photovoltaic modules require strong light energy to generate electricity. If there are several consecutive days of cloudy or rainy weather, the electrical energy stored in the battery pack will be depleted, causing the sewage treatment device to malfunction. Summary of the Invention

[0005] The purpose of this invention is to provide a rural sewage treatment system with multiple energy supply modes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Rural wastewater treatment systems with multiple energy supply modes include:

[0008] The purification system includes a water purification system and a sludge purification system. The water purification system includes a grid tank, a flocculation tank, a sedimentation and differentiation tank, an aeration tank, an anaerobic tank, and an artificial wetland connected in sequence. The sludge purification system includes an ozone tank, a biogas tank, a concentration tank, and a dewatering tank connected in sequence. The ozone tank is connected to the sedimentation and differentiation tank. A grid machine is installed in the grid tank. A mixer is installed in the flocculation tank. The ozone tank is connected to an ozone generator.

[0009] The power supply system includes a solar array, a battery pack connected to the solar array, a transformer connected to the battery pack, a gas storage tank connected to the biogas digester, and a biogas generator connected to both the gas storage tank and the battery pack. The solar array is used to convert solar energy into electrical energy and send it to the battery pack for storage. The grid machine, mixer, and ozone generator are respectively connected to the transformer, so that the battery pack supplies power to the grid machine, mixer, and ozone generator through the transformer.

[0010] When wastewater is sent into the grid tank, floating matter is removed. Then, the wastewater enters the flocculation tank, where flocculants are added, and the mixture is stirred before being sent to the sedimentation and differentiation tank for sedimentation. After solid-liquid separation, the supernatant is sent to the aeration tank and then to the anaerobic tank to consume the organic matter in the wastewater. Finally, it is discharged into an artificial wetland. The sediment in the sedimentation and differentiation tank is sent to the ozone tank for ozone sterilization and then to the biogas digester to produce biogas. The biogas is stored in the gas storage tank and used to generate electricity in the biogas generator and store the electrical energy in the battery pack. The residue in the biogas digester is sent to the thickening tank for concentration and then to the dewatering tank for further dewatering.

[0011] Preferably, the adjacent pools in the water purification system are connected by pipes, and each pipe section is equipped with a water pump.

[0012] Preferably, adjacent tanks in the sludge purification system are connected by pipes, and the ozone tank and the sedimentation and differentiation tank are also connected by the same pipes, with a plunger pump installed on each section of the pipe.

[0013] Preferably, the biogas digester and the gas storage tank are connected by a gas pipe, the gas storage tank and the biogas generator are connected by a gas pipe, and the ozone generator and the ozone pool are connected by a gas pipe. Each section of the gas pipe is equipped with a valve and a gas pump.

[0014] Preferably, the water pump, plunger pump, and air pump are each connected to the transformer.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention separates and purifies sewage and sludge through a water purification system. A biogas digester is used to produce biogas from the sludge. An ozone tank kills bacteria in the sediment, preventing them from competing with biogas bacteria for organic matter and affecting biogas production. A biogas generator and storage tank generate electricity from the biogas produced in the digester and store it in a battery bank. This provides additional energy to the battery bank when the solar array cannot generate enough power, thus better maintaining the operation of the sewage treatment system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram: 1. Grid pool; 2. Flocculation pool; 3. Sedimentation and differentiation pool; 4. Aeration pool; 5. Anaerobic pool; 6. Constructed wetland; 7. Ozone pool; 8. Biogas digester; 9. Concentrator; 10. Dewatering pool; 11. Grid machine; 12. Mixer; 13. Ozone generator; 14. Solar array; 15. Battery pack; 16. Transformer; 17. Gas storage tank; 18. Biogas generator. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 This utility model provides a technical solution:

[0021] Rural wastewater treatment systems with multiple energy supply modes include:

[0022] The power supply system includes a solar array 14, a battery pack 15 connected to the solar array 14, and a transformer 16 connected to the battery pack 15. The solar array 14 is an array of photovoltaic panels. The solar array 14 is electrically connected to the battery pack 15 by means of wires, so that the solar array 14 converts light energy into electrical energy and sends it to the battery pack 15 for storage. The transformer 16 is electrically connected to the battery pack 15 by means of wires, and the transformer 16 is used to convert the voltage of the electrical energy supplied by the battery pack 15 into the voltage required by the electrical appliances.

[0023] The purification system comprises a water purification system and a sludge purification system. The water purification system includes, in sequence, a grid tank 1, a flocculation tank 2, a sedimentation and differentiation tank 3, an aeration tank 4, an anaerobic tank 5, and an artificial wetland 6. A grid machine 11 is installed in the grid tank 1, electrically connected to a transformer 16 via wires. Wastewater enters the grid tank 1 through the inlet pipe, where the grid machine 11 continuously and automatically intercepts and removes various shapes of debris. The flocculation tank 2 is connected to the grid tank 1 via a pipe equipped with a water pump, which pumps the filtered wastewater from the grid tank 1 into the flocculation tank 2. A mixer 12 is installed in the flocculation tank 2, connected to a transformer cabinet via wires. Flocculant is added to the flocculation tank 2, and the mixer 12 agitates the flocculant, ensuring thorough mixing of the wastewater and flocculant. The sedimentation and differentiation tank 3 and the flocculation tank 2... The wastewater, mixed with flocculant, is connected to the sedimentation and differentiation tank 3 via a pipe equipped with a water pump. The sewage, along with the flocculant, enters the sedimentation and differentiation tank 3 for sedimentation, allowing the wastewater to settle and separate into solid and liquid phases. The aeration tank 4 is also connected to the sedimentation and differentiation tank 3 via a pipe equipped with a water pump. The supernatant from the sedimentation and differentiation tank 3 is pumped into the aeration tank 4, where aerobic bacteria are added to consume the organic matter in the wastewater. Similarly, the anaerobic tank 5 is connected to the aeration tank 4 via a pipe equipped with a water pump. The wastewater from the aeration tank 4 is pumped into the anaerobic tank 5, where anaerobic bacteria are added to further consume the organic matter. Finally, the constructed wetland 6 is connected to the anaerobic tank 5 via a pipe inserted into the soil of the constructed wetland 6. Small holes can be made in the pipe, and a water pump is installed on the pipe to discharge the treated wastewater into the constructed wetland 6.

[0024] The sludge purification system includes an ozone tank 7, a biogas digester 8, a thickening tank 9, and a dewatering tank 10 connected in sequence. The ozone tank 7 and the sedimentation and decomposition tank 3 are connected by a pipe equipped with a plunger pump. An ozone generator 13 is connected to the ozone tank 7 via a gas pipe equipped with an air pump. The plunger pump draws the sediment from the sedimentation and decomposition tank 3 into the ozone tank 7. Ozone generated by the ozone generator 13 is then pumped into the ozone tank 7 by the air pump to disinfect the sediment. The biogas digester 8 is connected to the ozone tank 7 via a pipe equipped with a plunger pump, which delivers the disinfected sediment into the biogas digester 8. Biogas bacteria are added to the biogas digester 8 to consume organic matter and produce biogas. The ozone tank 7 is used to prevent bacteria in the sediment from entering the biogas digester 8 and affecting biogas production. The thickener 9 and the biogas digester 8 are connected by a pipe with a plunger pump to discharge the residue in the biogas digester 8 into the thickener 9 for concentration. Valves can be installed on each pipe connected to the biogas digester 8. The dehydration tank 10 and the thickener 9 are connected by the same pipe. The dehydration tank 10 is equipped with a plunger pump to further dehydrate and dry the residue in the thickener 9. The dehydrated residue is then sent for further treatment such as incineration.

[0025] The power supply system also includes a gas storage tank 17 and a biogas generator 18. The gas storage tank 17 and the biogas digester 8 are connected by a gas pipe. The gas pipe is equipped with a valve and a gas pump. Opening the valve allows the gas pump to send the biogas in the biogas digester 8 into the gas storage tank 17 for storage. The biogas generator 18 and the gas storage tank 17 are connected by a gas pipe. The gas pipe is equipped with a valve and a gas pump. Opening the valve allows the gas pump to send the biogas in the gas storage tank 17 into the biogas generator 18. The biogas generator 18 burns the biogas and converts it into electrical energy. The biogas generator 18 and the battery pack 15 are electrically connected by wires, and the electrical energy is sent into the battery pack 15 for storage.

[0026] The water pump, plunger pump, and air pump are electrically connected to the transformer 16 via wires, so that the transformer 16 supplies the electrical energy from the battery pack 15 to the water pump, plunger pump, and air pump.

[0027] Working principle: During use, wastewater is sent to the grit chamber 1 to remove floating matter. Then, the wastewater enters the flocculation tank 2, where flocculant is added, and the mixture is stirred and sent to the sedimentation and differentiation tank 3 for sedimentation. After solid-liquid separation, the supernatant is sent to the aeration tank 4 and the anaerobic tank 5 to consume the organic matter in the wastewater. Then, it is discharged into the constructed wetland 6. The sediment in the sedimentation and differentiation tank 3 is sent to the ozone tank 7 for ozone sterilization and then sent to the biogas digester 8 to produce biogas. The biogas is stored in the gas storage tank 17 and used to generate electricity in the biogas generator 18 and store the electrical energy in the battery. The residue in the biogas digester 8 is sent to the thickening tank 9 for concentration and then sent to the dewatering tank 10 for further dewatering.

[0028] 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 rural sewage treatment system with multiple energy supply modes, characterized in that, include: The purification system includes a water purification system and a sludge purification system. The water purification system includes a grid tank, a flocculation tank, a sedimentation and differentiation tank, an aeration tank, an anaerobic tank, and an artificial wetland connected in sequence. The sludge purification system includes an ozone tank, a biogas tank, a concentration tank, and a dewatering tank connected in sequence. The ozone tank is connected to the sedimentation and differentiation tank. A grid machine is installed in the grid tank. A mixer is installed in the flocculation tank. The ozone tank is connected to an ozone generator. The power supply system includes a solar array, a battery pack connected to the solar array, a transformer connected to the battery pack, a gas storage tank connected to the biogas digester, and a biogas generator connected to both the gas storage tank and the battery pack. The solar array is used to convert solar energy into electrical energy and send it to the battery pack for storage. The grid machine, mixer, and ozone generator are respectively connected to the transformer, so that the battery pack supplies power to the grid machine, mixer, and ozone generator through the transformer.

2. The rural sewage treatment system with multiple energy supply modes according to claim 1, characterized in that: The adjacent pools in the water purification system are connected by pipes, and each pipe section is equipped with a water pump.

3. The rural sewage treatment system with multiple energy supply modes according to claim 2, characterized in that: The adjacent tanks in the sludge purification system are connected by pipes, and the ozone tank and the sedimentation and differentiation tank are also connected by the same pipes, with a plunger pump installed on each section of the pipe.

4. The rural sewage treatment system with multiple energy supply modes according to claim 3, characterized in that: The biogas digester and the gas storage tank are connected by a gas pipe, the gas storage tank and the biogas generator are connected by a gas pipe, and the ozone generator and the ozone pool are connected by a gas pipe. Each section of the gas pipe is equipped with a valve and a gas pump.

5. The rural sewage treatment system with multiple energy supply modes according to claim 4, characterized in that: The water pump, plunger pump, and air pump are respectively connected to the transformer.

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