Wastewater treatment system utilizing renewable energy sources

Abstract

The embodiment of the present application provides a sewage treatment system using renewable energy, and relates to the technical field of sewage treatment.The sewage treatment system using renewable energy comprises a sewage treatment device and an energy device; the energy device comprises a photovoltaic module and a storage battery, and the storage battery is electrically connected with the photovoltaic module; the sewage treatment device comprises an adjusting tank, a biochemical tank and a backflow component, the adjusting tank is communicated with the biochemical tank, and the backflow component comprises a backflow pipe and a backflow pump; the backflow pipe comprises a heat exchange pipe section, the inlet of the backflow pump is communicated with the biochemical tank, the outlet of the backflow pump is communicated with the heat exchange pipe section, the heat exchange pipe section is communicated with the adjusting tank, the backflow pump is electrically connected with the storage battery; and the heat exchange pipe section is connected with the photovoltaic module.The sewage treatment system using renewable energy provided by the embodiment of the present application exchanges heat between sewage and the photovoltaic module, so as to solve the problem that the conversion efficiency of the photovoltaic panel in the sewage treatment system is greatly influenced by the environment and the power generation efficiency is low.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a wastewater treatment system that utilizes renewable energy. Background Technology

[0002] Using renewable energy sources such as solar power to power wastewater treatment systems can reduce energy consumption, decrease reliance on traditional power supply systems, lower operating costs, and align with the trend of low-carbon and environmentally friendly practices.

[0003] The operating temperature of a photovoltaic (PV) panel affects the morphology of its electric field structure and the energy released by electrons, thus impacting its peak output power. Specifically, at high temperatures, increased electron excitation within the semiconductor material leads to a higher recombination rate between electrons and holes, reducing the efficiency of the photovoltaic effect. Furthermore, high temperatures can cause degradation and aging of the PV panel material, further diminishing its long-term stable power generation performance. Conversely, at low temperatures, the speed of electron movement within the semiconductor material slows down, reducing electron conductivity and affecting current generation, thereby lowering the photovoltaic conversion efficiency.

[0004] Therefore, the conversion efficiency of photovoltaic panels in existing sewage treatment systems is greatly affected by the environment, resulting in low power generation efficiency. Summary of the Invention

[0005] In view of this, this application provides a wastewater treatment system that utilizes renewable energy to solve the problem that the conversion efficiency of photovoltaic panels in wastewater treatment systems is greatly affected by the environment and the power generation efficiency is low.

[0006] To achieve the above objectives, this application provides a wastewater treatment system utilizing renewable energy, employing the following technical solution:

[0007] This application provides a wastewater treatment system utilizing renewable energy, including a wastewater treatment device and an energy device;

[0008] The energy device includes a photovoltaic module and a storage battery, wherein the storage battery is electrically connected to the photovoltaic module;

[0009] The wastewater treatment device includes an equalization tank, a biological treatment tank, and a reflux assembly. The outlet of the equalization tank is connected to the inlet of the biological treatment tank. The reflux assembly includes a reflux pipe and a reflux pump.

[0010] The reflux pipe includes a heat exchange pipe section, the inlet of the reflux pump is connected to the biochemical tank, the outlet of the reflux pump is connected to the heat exchange pipe section, the heat exchange pipe section is connected to the regulating tank, and the reflux pump is electrically connected to the storage battery.

[0011] The heat exchange pipe section is connected to the photovoltaic module. During sewage recirculation, the sewage exchanges heat with the photovoltaic module through the heat exchange pipe section.

[0012] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment includes a photovoltaic module comprising at least one photovoltaic panel, with heat exchange pipe sections wound around the back of each of the photovoltaic panels.

[0013] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment further includes a wind power component, a biological rotating disc is provided in the biochemical tank, the wind power component is connected to the biological rotating disc, and the wind power component is used to drive the biological rotating disc to rotate.

[0014] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment includes a wind power component comprising a vertical shaft fan, a transmission component, and a gearbox connected in sequence. The gearbox is connected to the rotating shaft of the biological rotating disk, and the vertical shaft fan is used to drive the biological rotating disk to rotate via the transmission component and the gearbox.

[0015] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment further includes a biological rotating disc connected to a drive motor, which is electrically connected to the storage battery.

[0016] The drive motor is configured to turn off when the vertical shaft fan is running and to start when the vertical shaft fan is stopped, so as to drive the biological disc to rotate.

[0017] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment includes an aerator installed in the biochemical tank, the aerator being connected to an aeration pump, and the aeration pump being electrically connected to the storage battery.

[0018] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment further includes a fixed-bed packing material in the biochemical tank;

[0019] The biological rotating disc, the fixed bed packing material, and the aerator are connected sequentially from top to bottom within the biological treatment tank.

[0020] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment includes a booster pump installed in the equalization tank. The inlet of the booster pump is connected to the outlet of the equalization tank, and the outlet of the booster pump is connected to the inlet of the biochemical tank via a pipe. The booster pump is electrically connected to the storage battery.

[0021] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment includes a return pipe further comprising a first pipe section and a second pipe section, wherein the first pipe section, the heat exchange pipe section, and the second pipe section are connected in sequence, the outlet of the return pump is connected to the first pipe section, and the second pipe section is connected to the regulating tank.

[0022] In one possible implementation, the wastewater treatment system utilizing renewable energy provided in this application embodiment also includes a battery for electrical connection to a mains power supply system.

[0023] The wastewater treatment system utilizing renewable energy provided in this application includes a wastewater treatment device and an energy device. The energy device includes photovoltaic modules and a battery, with the battery electrically connected to the photovoltaic modules. The wastewater treatment device includes an equalization tank, a biological treatment tank, and a recirculation component. The outlet of the equalization tank is connected to the inlet of the biological treatment tank. The recirculation component includes a recirculation pipe and a recirculation pump. The recirculation pipe includes a heat exchange pipe section. The inlet of the recirculation pump is connected to the biological treatment tank, and the outlet of the recirculation pump is connected to the heat exchange pipe section. The heat exchange pipe section is connected to the equalization tank, and the recirculation pump is electrically connected to the battery. The heat exchange pipe section is connected to the photovoltaic modules. The recirculation pipe section is installed on the photovoltaic modules. During the wastewater recirculation process, because the wastewater temperature is close to room temperature and the specific heat capacity of the wastewater is high, the wastewater can exchange heat with the photovoltaic modules through the heat exchange pipe section. This allows the temperature of the photovoltaic modules to remain stable, preventing the operating temperature of the photovoltaic modules from being too high or too low, and solving the problem that the conversion efficiency of photovoltaic modules is greatly affected by the environment, resulting in low power generation efficiency. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of the embodiments of this application.

[0025] Figure 1 This is a schematic diagram of a wastewater treatment system utilizing renewable energy, provided as an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100 - Photovoltaic modules;

[0028] 110 - Photovoltaic panels;

[0029] 200-Battery;

[0030] 300-Equalization tank;

[0031] 310-Boost Pump;

[0032] 400-Biological Pool;

[0033] 410-Biological Rotary Disk;

[0034] 420 - Aerator;

[0035] 430 - Fixed bed packing;

[0036] 500-Reflow Component;

[0037] 510 - Return pipe; 511 - Heat exchanger tube section; 512 - First tube section; 513 - Second tube section;

[0038] 520 - Reflux pump;

[0039] 600-Wind turbine assembly;

[0040] 610 - Vertical shaft fan;

[0041] 620 - Transmission components;

[0042] 630-Transmission;

[0043] 700 - Drive motor;

[0044] 800-Aeration pump.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the embodiments of this application in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application and how the technical solutions of the embodiments of this application solve the above-mentioned technical problems will be clearly and completely described below with reference to specific embodiments and the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0048] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0049] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0050] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0051] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0052] Using renewable energy sources such as solar power to power wastewater treatment systems can reduce energy consumption, decrease reliance on traditional power supply systems, lower operating costs, and align with the trend of low-carbon and environmentally friendly practices.

[0053] The operating temperature of a photovoltaic (PV) panel affects the morphology of its electric field structure and the energy released by electrons, thus impacting its peak output power. Specifically, at high temperatures, increased electron excitation within the semiconductor material leads to a higher recombination rate between electrons and holes, reducing the efficiency of the photovoltaic effect. Furthermore, high temperatures can cause degradation and aging of the PV panel material, further diminishing its long-term stable power generation performance. Conversely, at low temperatures, the speed of electron movement within the semiconductor material slows down, reducing electron conductivity and affecting current generation, thereby lowering the photovoltaic conversion efficiency.

[0054] Therefore, the conversion efficiency of photovoltaic panels in existing sewage treatment systems is greatly affected by the environment, resulting in low power generation efficiency.

[0055] Based on this, this application provides a wastewater treatment system utilizing renewable energy, including a wastewater treatment device and an energy device. The energy device includes photovoltaic modules and a battery, with the battery electrically connected to the photovoltaic modules. The wastewater treatment device includes an equalization tank, a biological treatment tank, and a recirculation component. The outlet of the equalization tank is connected to the inlet of the biological treatment tank. The recirculation component includes a recirculation pipe and a recirculation pump. The recirculation pipe includes a heat exchange pipe section. The inlet of the recirculation pump is connected to the biological treatment tank, and the outlet of the recirculation pump is connected to the heat exchange pipe section. The heat exchange pipe section is connected to the equalization tank, and the recirculation pump is electrically connected to the battery. The heat exchange pipe section is connected to the photovoltaic modules. The recirculation pipe section is installed on the photovoltaic modules. During the wastewater recirculation process, because the wastewater temperature is close to room temperature and the specific heat capacity of the wastewater is high, the wastewater can exchange heat with the photovoltaic modules through the heat exchange pipe section. This allows the temperature of the photovoltaic modules to remain stable, preventing the operating temperature of the photovoltaic modules from being too high or too low, and solving the problem that the conversion efficiency of photovoltaic modules is greatly affected by the environment, resulting in low power generation efficiency.

[0056] The technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0057] Figure 1 This is a schematic diagram of a wastewater treatment system utilizing renewable energy, provided as an embodiment of this application.

[0058] Combination Figure 1 As shown in the figure, this application embodiment provides a wastewater treatment system utilizing renewable energy, including a wastewater treatment device and an energy device; the energy device includes a photovoltaic module 100 and a battery 200, with the battery 200 electrically connected to the photovoltaic module 100; the wastewater treatment device includes an equalization tank 300, a biological treatment tank 400, and a reflux assembly 500, with the outlet of the equalization tank 300 connected to the inlet of the biological treatment tank 400; the reflux assembly 500 includes a reflux pipe 510 and a reflux pump 520; the reflux pipe 510 includes a heat exchange pipe section 511, the inlet of the reflux pump 520 connected to the biological treatment tank 400, the outlet of the reflux pump 520 connected to the heat exchange pipe section 511, the heat exchange pipe section 511 connected to the equalization tank 300, and the reflux pump 520 electrically connected to the battery 200; the heat exchange pipe section 511 is connected to the photovoltaic module 100, and during wastewater reflux, the wastewater exchanges heat with the photovoltaic module 100 via the heat exchange pipe section 511.

[0059] The equalization tank 300 is typically designed to store a certain amount of wastewater to regulate its quality and quantity, acting as a buffer to prevent sudden pollutant or flow fluctuations from impacting the subsequent biological treatment tank 400. The shape and volume of the equalization tank 300 can be specifically designed based on site conditions and treatment requirements; this application does not impose any restrictions on this.

[0060] Wastewater quality (such as pollutant concentration and pH value) may fluctuate significantly. The equalization tank 300 mixes wastewater from different time periods to homogenize the wastewater quality, thus reducing load fluctuations in the subsequent biological treatment tank 400. Furthermore, wastewater flow is unstable, with peaks and troughs. The equalization tank 300 stores wastewater during peak periods and releases it during trough periods, thereby stabilizing the treatment load of the subsequent biological treatment tank 400.

[0061] The biological treatment tank 400 contains microorganisms that degrade organic and some inorganic pollutants in wastewater through their metabolic activities, thereby reducing the biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of the wastewater and improving the stability of the effluent quality. Furthermore, the biological treatment tank 400 can also convert nitrogen and phosphorus in the wastewater into gaseous nitrogen or precipitates through specific microbial metabolic pathways, thus achieving nitrogen and phosphorus removal from the wastewater.

[0062] Furthermore, the wastewater treatment device can also be equipped with a wastewater detection device to detect indicators in the wastewater treatment process of the biological treatment tank 400. The wastewater detection device may include a total nitrogen detector, a COD detector, and an NH3-N detector.

[0063] It should be noted that the recirculation ratio of wastewater from biological treatment tank 400 to equalization tank 300 is 20%–100%. The recirculation ratio is the ratio of the volume of wastewater recirculated from biological treatment tank 400 to equalization tank 300 per unit time to the volume of wastewater entering biological treatment tank 400 from equalization tank 300. This recirculation ratio can be flexibly adjusted according to the actual water quality of the wastewater.

[0064] By setting up the reflux component 500, sewage can be circulated from the equalization tank 300 to the biological treatment tank 400 and back to the equalization tank 300. This circulatory treatment method can achieve a more stable sewage treatment effect and effectively cope with fluctuations in upstream water quality and quantity.

[0065] In practice, wastewater is first treated in the equalization tank 300, and then discharged into the biological treatment tank 400 for further treatment. The wastewater treated in the biological treatment tank 400 is then returned to the equalization tank 300 via the return flow component 500. Due to human water usage habits, the temperature of wastewater is generally close to room temperature, around 10℃ to 20℃, and relatively constant. Furthermore, wastewater has a high specific heat capacity. By installing the heat exchange tube section 511 of the return flow pipe 510 on the photovoltaic module 100, during the wastewater return process, the wastewater flowing through the heat exchange tube section 511 can exchange heat with the photovoltaic module 100, thereby maintaining a stable temperature for the photovoltaic module 100 and preventing its operating temperature from becoming too high or too low, thus ensuring the conversion efficiency of the photovoltaic module 100 and improving power generation efficiency.

[0066] Understandably, when wastewater is recirculated, it passes through the photovoltaic module 100. In addition to cooling the photovoltaic module 100 when the temperature is high in summer, the wastewater can also heat the photovoltaic module 100 when the temperature is low in winter, so that the temperature of the photovoltaic module 100 can be kept stable, thereby improving the conversion efficiency of the photovoltaic module 100.

[0067] In some embodiments, the photovoltaic module 100 includes at least one photovoltaic panel 110, and heat exchange tube segments 511 are wound around the back of each photovoltaic panel 110.

[0068] The photovoltaic panel 110 can convert solar energy into direct current, part of which is used to power the wastewater treatment device; the rest is stored in the battery 200 to power the wastewater treatment device when solar energy is unavailable (such as at night or on cloudy days).

[0069] For example, the return pump 520 can be a DC pump so that the DC power converted by the photovoltaic panel 110 can be used directly, resulting in higher energy utilization efficiency.

[0070] Understandably, the photovoltaic panel 110 is the core component of the photovoltaic module 100. The operating temperature of the photovoltaic panel 110 will affect the shape of its electric field structure and the energy released by electrons, thereby affecting its peak output power. Therefore, too hot or too cold weather will affect the photovoltaic power generation efficiency of the photovoltaic panel 110.

[0071] This embodiment of the application relies on the fact that the temperature of the sewage is close to room temperature and the specific heat capacity of the sewage is relatively high. The heat exchange tube section 511 is set on the back of the photovoltaic panel 110. When the sewage flows through the heat exchange tube section 511, the sewage can exchange heat with the photovoltaic panel 110 through the heat exchange tube section 511, so that the operating temperature of the photovoltaic panel 110 remains stable, so as to prevent the temperature of the photovoltaic panel 110 from being too high or too low, ensuring the conversion efficiency of the photovoltaic module 100 and improving the power generation efficiency.

[0072] For example, the heat exchange tube section 511 may be arranged in a serpentine, disc-shaped or U-shaped manner around the back of the photovoltaic panel 110 to increase the contact area between the heat exchange tube section 511 and the photovoltaic panel 110, thereby increasing the area of ​​heat exchange between the sewage and the photovoltaic panel 110.

[0073] In some embodiments, the energy device further includes a wind turbine component 600, a biological rotating disk 410 is provided in the biochemical tank 400, the wind turbine component 600 is connected to the biological rotating disk 410, and the wind turbine component 600 is used to drive the biological rotating disk 410 to rotate.

[0074] Understandably, the biological rotating disc 410 is a biological treatment device for wastewater treatment. The biological rotating disc 410 consists of a rotating shaft and several discs installed in parallel on the rotating shaft, with a biofilm attached to the surface of the discs.

[0075] In this embodiment, the rotating shaft is horizontally positioned within the biological treatment tank 400, with a portion of the disc submerged in the wastewater within the tank. The wind turbine assembly 600 is connected to the rotating shaft of the biological rotating disc 410 to drive the shaft and rotate the disc, thereby alternating the exposure of the biofilm on the disc surface to air and wastewater. During the rotation of the biological rotating disc 410, the biofilm on the disc adsorbs organic pollutants from the wastewater and absorbs dissolved oxygen from the water film outside the biofilm, thus decomposing the organic matter. When the disc comes into contact with air, the air dissolves into the water film, increasing its dissolved oxygen content.

[0076] Traditional wastewater treatment systems often utilize wind and solar power to generate electricity, which then drives the various electrical devices within the system. However, photovoltaic panels generate direct current (DC), while wind turbines generate alternating current (AC). The combined power supply from these two systems typically requires inverter conversion, which not only complicates the system but also inevitably reduces energy conversion efficiency. Furthermore, due to the unpredictability of wind energy, if large amounts of electricity generated by wind turbines are not stored or utilized promptly, unloading resistors are needed to dissipate the energy, further wasting it. Moreover, storing and utilizing the electricity generated by wind and solar power often requires large-capacity battery packs (with storage capacity sufficient to support 12-24 hours of wastewater treatment system operation). This not only increases construction and maintenance costs but also makes future disposal of the battery packs extremely inconvenient.

[0077] In this embodiment, the wind power component 600 is directly connected to the biological rotating disk 410, which can directly drive the biological rotating disk 410 to rotate without the need for electrical energy conversion and storage. This avoids the process of converting mechanical energy into electrical energy and then back into mechanical energy, thus enabling efficient utilization of wind energy.

[0078] Specifically, this embodiment utilizes photovoltaic power generation combined with wind power to drive the rotation of the biological rotating disk 410, allowing for the independent use of both photovoltaic and wind power generation modes, thus facilitating efficient energy utilization. Furthermore, the direct current generated by photovoltaic power generation can be directly stored in a small-capacity battery pack (with a storage capacity sufficient to support the operation of the wastewater treatment system for 2-4 hours), avoiding the inconvenience of disposing of large-capacity battery packs and reducing construction and maintenance costs.

[0079] For example, small-capacity battery packs can be made from batteries discarded from equipment such as electric vehicles and then reused.

[0080] In some embodiments, the wind power assembly 600 includes a vertical shaft fan 610, a transmission member 620, and a gearbox 630 connected in sequence. The gearbox 630 is connected to the rotating shaft of the biological rotating disk 410, and the vertical shaft fan 610 is used to drive the biological rotating disk 410 to rotate via the transmission member 620 and the gearbox 630.

[0081] In practice, the vertical shaft fan 610 operates in kinetic energy mode, using wind power to drive the vertical shaft fan 610 to rotate, which in turn drives the transmission component 620 to rotate, which in turn drives the gearbox 630 to rotate, and then the gearbox 630 drives the biological rotating disk 410 to rotate, thus achieving efficient utilization of wind energy.

[0082] For example, the transmission component 620 can be a transmission shaft, the two ends of which can be connected to the fan shaft of the vertical shaft fan 610 and the gearbox 630 respectively via couplings, so as to transmit the rotational torque of the vertical shaft fan 610 to the gearbox 630 and then to the biological rotating plate 410.

[0083] In other embodiments, the transmission component 620 may also be a gear transmission structure, in which the gear on the fan shaft of the vertical shaft fan 610 meshes with the gear on the gearbox 630 to transmit torque. The gear may be a spur gear, helical gear, or bevel gear, and its specifications can be selected according to the transmission direction and requirements.

[0084] In other embodiments, the transmission component 620 may also be a sprocket drive structure, in which sprockets are installed on the fan shaft of the vertical shaft fan 610 and the gearbox 630 respectively, and connected by a chain, and the torque is transmitted from the vertical shaft fan 610 to the gearbox 630 through the meshing of the chain and the sprockets.

[0085] In other embodiments, the transmission component 620 may be other structures capable of transmission, such as belt drive mechanisms or hydraulic couplings, which will not be described in detail in the embodiments of this application.

[0086] The gearbox 630 can change the rotational speed and torque output of the fan shaft of the vertical shaft fan 610. Under the adjustment of the gearbox 630, the biological rotating disk 410 can be rotated at a specific speed to adapt to different loads and working conditions. This embodiment does not impose specific limitations on the rotational speed of the biological rotating disk 410.

[0087] Compared to the traditional method of converting wind energy into electrical energy and storing it in batteries, this embodiment of the application uses a transmission component 620 and a gearbox 630 to transfer rotational torque from the vertical shaft fan 610 to the bio-rotating disk 410, resulting in a higher wind energy conversion rate. This allows the vertical shaft fan 610 to generate and use energy immediately without the need for unloading resistors, and also reduces the use of large-capacity battery packs, thereby lowering construction and maintenance costs.

[0088] Specifically, the wastewater treatment system utilizing renewable energy provided in this application embodiment utilizes both wind and solar energy, and can achieve a high energy conversion rate, which facilitates the stable and efficient operation of the wastewater treatment system.

[0089] In some embodiments, the biological rotating disk 410 is also connected to a drive motor 700, which is electrically connected to a battery 200; the drive motor 700 is configured to be turned off when the vertical shaft fan 610 is running and to be turned on when the vertical shaft fan 610 is stopped, so as to drive the biological rotating disk 410 to rotate.

[0090] Due to the uncertainty of wind energy, by setting up a drive motor 700 that is electrically connected to the storage battery 200, the biological rotating plate 410 can be driven to rotate as an auxiliary means in the absence of wind or when other vertical shaft fans 610 cannot operate, so as to ensure the stable operation of the biological tank 400.

[0091] For example, the drive motor 700 can be a DC motor so that the DC power converted by the photovoltaic panel 110 can be used directly, resulting in higher energy utilization efficiency.

[0092] In some embodiments, an aerator 420 is provided in the biochemical tank 400, the aerator 420 is connected to an aeration pump 800, and the aeration pump 800 is electrically connected to a storage battery 200.

[0093] Understandably, aerator 420 is a device within the biological treatment tank 400 that provides oxygen to microorganisms. Aerator 420 introduces oxygen into the wastewater to support the growth and metabolism of aerobic microorganisms, thereby effectively degrading organic pollutants in the wastewater.

[0094] For example, the aerator 420 in this application embodiment is a disc aerator 420.

[0095] Specifically, the air pipe of the disc aerator 420 is connected to the aeration pump 800. Air is introduced into the disc aerator 420 through the aeration pump 800. When the air passes through the micropores on the surface of the diffuser disc of the disc aerator 420, it forms tiny bubbles. The bubbles rise and diffuse in the sewage and come into contact with the sewage, so that oxygen dissolves from the bubbles into the sewage for use by aerobic microorganisms.

[0096] For example, the aeration pump 800 can be a DC pump so that the DC power converted by the photovoltaic panel 110 can be used directly, resulting in higher energy utilization efficiency.

[0097] In some embodiments, a fixed bed packing material 430 is also provided in the biological tank 400; the biological rotating disc 410, the fixed bed packing material 430 and the aerator 420 are connected in sequence from top to bottom in the biological tank 400.

[0098] Understandably, fixed-bed packing material 430 typically has a large specific surface area and complex geometry, providing a favorable environment for microbial attachment and growth. Microorganisms in the wastewater attach to the surface of the fixed-bed packing material 430, forming a biofilm. This biofilm adsorbs organic pollutants and some inorganic pollutants in the wastewater, converting them into carbon dioxide and water. As the microorganisms grow and metabolize, the aged biofilm continuously sheds, and new biofilm continuously forms, thus maintaining the activity and efficiency within the biological treatment tank 400.

[0099] This embodiment of the application provides a surface for microorganisms to attach and grow by setting a fixed bed packing material 430 in the biochemical tank 400. The fixed bed packing material 430 can be a structure made of plastic, ceramic, or other corrosion-resistant materials.

[0100] Traditional wastewater treatment devices are mostly horizontal and consist of multiple parallel treatment tanks. They have problems such as large footprint, shallow effective water depth, low aeration efficiency, limited biomass, and long required retention time.

[0101] This embodiment of the application arranges the biological rotating disc 410, the fixed bed packing 430, and the aerator 420 in an up-down layout, which can increase the biomass, save the floor space of the sewage treatment device, improve the aeration and oxygenation efficiency, make the sewage treatment efficiency higher, require a shorter retention time, and also help save costs.

[0102] In some embodiments, a booster pump 310 is provided in the regulating tank 300. The inlet of the booster pump 310 is connected to the outlet of the regulating tank 300, and the outlet of the booster pump 310 is connected to the inlet of the biochemical tank 400 through a pipe. The booster pump 310 is electrically connected to the storage battery 200.

[0103] Understandably, the sewage in the equalization tank 300 is transported to the biological treatment tank 400 by the lift pump 310.

[0104] In the wastewater treatment device, there may be a height difference between the equalization tank 300 and the biological treatment tank 400. The height difference can be overcome by the lift pump 310, which lifts the wastewater from the lower level to the higher level, so as to ensure the continuity and stability of the wastewater treatment process.

[0105] For example, the booster pump 310 can be a DC pump so that the DC power converted by the photovoltaic panel 110 can be used directly, resulting in higher energy utilization efficiency.

[0106] In some embodiments, the reflux pipe 510 further includes a first pipe section 512 and a second pipe section 513, the first pipe section 512, the heat exchange pipe section 511 and the second pipe section 513 are connected in sequence, the outlet of the reflux pump 520 is connected to the first pipe section 512, and the second pipe section 513 is connected to the regulating tank 300.

[0107] In practice, under the action of the reflux pump 520, the sewage in the biochemical tank 400 flows sequentially through the first pipe section 512, the heat exchange pipe section 511, and the second pipe section 513 before entering the regulating tank 300. When the sewage flows through the heat exchange pipe section 511, it can exchange heat with the photovoltaic panel 110 to keep the photovoltaic panel 110 at a stable and suitable operating temperature.

[0108] For example, the heat exchange tube segment 511 has a section connected in series between the first tube segment 512 and the second tube segment 513, and the heat exchange tube segment 511 is connected to the back side of the photovoltaic panel body composed of each photovoltaic panel 110.

[0109] In other embodiments, the heat exchange tube segment 511 may also have multiple segments, with each segment of the heat exchange tube segment 511 connected in parallel between the first tube segment 512 and the second tube segment 513, and the heat exchange tube segment 511 corresponds one-to-one with the photovoltaic panel 110 and is connected to the back of the corresponding photovoltaic panel 110.

[0110] In other embodiments, the heat exchange tube segment 511 has multiple segments, each segment of the heat exchange tube segment 511 is connected in series, and each segment of the heat exchange tube segment 511 connected in series is also connected between the first tube segment 512 and the second tube segment 513. The heat exchange tube segment 511 corresponds one-to-one with the photovoltaic panel 110 and is connected to the back of the corresponding photovoltaic panel 110.

[0111] In some embodiments, the battery 200 is also used for electrical connection to the mains power supply system.

[0112] By connecting the storage battery 200 to the mains power supply system, auxiliary power can be supplied by the mains power supply system when there is insufficient light, so as to ensure the stable operation of the sewage treatment device.

[0113] The AC power supplied by the mains power supply system is converted into DC power and then replenished in the storage battery 200.

[0114] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of this application that follow the general principles of the embodiments of this application and include common knowledge or customary techniques in the art not disclosed in the embodiments of this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0115] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A wastewater treatment system utilizing renewable energy, characterized in that, This includes wastewater treatment equipment and energy equipment; The energy device includes a photovoltaic module (100) and a storage battery (200), wherein the storage battery (200) is electrically connected to the photovoltaic module (100); The wastewater treatment device includes an equalization tank (300), a biological treatment tank (400), and a return flow assembly (500). The outlet of the equalization tank (300) is connected to the inlet of the biological treatment tank (400). The return flow assembly (500) includes a return pipe (510) and a return pump (520). The return flow ratio of wastewater from the biological treatment tank (400) to the equalization tank (300) is 20% to 100%. The reflux pipe (510) includes a heat exchange pipe section (511), the inlet of the reflux pump (520) is connected to the biochemical tank (400), the outlet of the reflux pump (520) is connected to the heat exchange pipe section (511), the heat exchange pipe section (511) is connected to the regulating tank (300), and the reflux pump (520) is electrically connected to the storage battery (200). The heat exchange pipe section (511) is connected to the photovoltaic module (100). During sewage recirculation, the sewage exchanges heat with the photovoltaic module (100) through the heat exchange pipe section (511). The energy device also includes a wind turbine assembly (600), and a biological rotating disc (410) is provided in the biochemical pool (400). The wind turbine assembly (600) includes a vertical shaft fan (610), a transmission component (620), and a gearbox (630) connected in sequence. The biological rotating disk (410) is also connected to a drive motor (700), which is electrically connected to the battery (200); The drive motor (700) is configured to be turned off when the vertical shaft fan (610) is running and to be turned on when the vertical shaft fan (610) is stopped, so as to drive the biological rotating disc (410) to rotate. The return pipe (510) further includes a first pipe section (512) and a second pipe section (513), the first pipe section (512), the heat exchange pipe section (511) and the second pipe section (513) are connected in sequence, the outlet of the return pump (520) is connected to the first pipe section (512), and the second pipe section (513) is connected to the regulating tank (300); The biochemical tank (400) is equipped with an aerator (420) and a fixed bed packing material (430). The biological rotating disc (410), the fixed bed packing material (430) and the aerator (420) are connected in sequence from top to bottom in the biochemical tank (400).

2. The wastewater treatment system utilizing renewable energy according to claim 1, characterized in that, The photovoltaic module (100) includes at least one photovoltaic panel (110), and the heat exchange tube section (511) is wound around the back of each of the photovoltaic panels (110).

3. The wastewater treatment system utilizing renewable energy according to claim 1, characterized in that, The wind power component (600) is connected to the biological turntable (410), and the wind power component (600) is used to drive the biological turntable (410) to rotate.

4. The wastewater treatment system utilizing renewable energy according to claim 3, characterized in that, The transmission (630) is connected to the rotating shaft of the biological rotating disk (410), and the vertical shaft fan (610) is used to drive the biological rotating disk (410) to rotate via the transmission member (620) and the transmission (630).

5. The wastewater treatment system utilizing renewable energy according to claim 3 or 4, characterized in that, The aerator (420) is connected to the aeration pump (800), and the aeration pump (800) is electrically connected to the battery (200).

6. The wastewater treatment system utilizing renewable energy according to any one of claims 1 to 4, characterized in that, A booster pump (310) is installed in the regulating tank (300). The inlet of the booster pump (310) is connected to the outlet of the regulating tank (300), and the outlet of the booster pump (310) is connected to the inlet of the biochemical tank (400) through a pipe. The booster pump (310) is electrically connected to the storage battery (200).

7. The wastewater treatment system utilizing renewable energy according to any one of claims 1 to 4, characterized in that, The battery (200) is also used for electrical connection to the mains power supply system.

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