Sewage treatment system utilizing renewable energy sources

Abstract

The embodiment of the invention provides a sewage treatment system utilizing renewable energy sources, and relates to the technical field of sewage treatment. The sewage treatment system utilizing 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 reflux assembly, the adjusting tank is communicated with the biochemical tank, and the reflux assembly comprises a reflux pipe and a reflux pump; the reflux pipe comprises a heat exchange pipe section, an inlet of the reflux pump is communicated with the biochemical pool, an outlet of the reflux pump is communicated with the heat exchange pipe section, the heat exchange pipe section is communicated with the adjusting pool, and the reflux pump is electrically connected with the storage battery; and the heat exchange pipe section is connected with the photovoltaic module. According to the sewage treatment system utilizing the renewable energy sources provided by the embodiment of the invention, heat exchange is performed between the sewage and the photovoltaic module, so that the problems that the conversion efficiency of a photovoltaic panel in the sewage treatment system is greatly influenced by the environment and the power generation efficiency is relatively low are solved.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a sewage treatment system utilizing renewable energy. Background Art

[0002] Using renewable energy such as solar energy to power sewage treatment systems can reduce energy consumption, reduce dependence on traditional power supply systems, reduce operating costs, and conform to the trend of low-carbon and environmental protection.

[0003] The working temperature of photovoltaic panels will affect the morphology of their electric field structure and the energy released by electrons, thus affecting their peak output power. In a high temperature environment, the electron excitation inside the semiconductor material increases, thereby increasing the recombination rate of electrons and holes, which will reduce the efficiency of the photovoltaic effect. In addition, high temperature may also cause the degradation and aging of photovoltaic panel materials, further reducing their long-term stable power generation performance; similarly, in a low temperature environment, the movement speed of electrons inside the semiconductor material will slow down, thereby reducing the conductivity of electrons, affecting the generation of current, and reducing the photovoltaic conversion efficiency.

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

[0005] In view of this, an embodiment of the present application provides a sewage treatment system using renewable energy, so as to solve the problem that the conversion efficiency of photovoltaic panels in the sewage treatment system is greatly affected by the environment and the power generation efficiency is low.

[0006] To achieve the above objectives, the present application provides a sewage treatment system using renewable energy, which adopts the following technical solutions:

[0007] The embodiment of the present application provides a sewage treatment system using renewable energy, including a sewage treatment device and an energy device;

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

[0009] The sewage treatment device comprises a regulating tank, a biochemical tank and a reflux component, the water outlet of the regulating tank is connected to the water inlet of the biochemical tank, and the reflux component comprises 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 pool, the outlet of the reflux pump is connected to the heat exchange pipe section, the heat exchange pipe section is connected to the regulating pool, and the reflux pump is electrically connected to the battery;

[0011] The heat exchange pipe section is connected to the photovoltaic assembly. When sewage flows back, the sewage exchanges heat with the photovoltaic assembly through the heat exchange pipe section.

[0012] In a possible implementation, in the sewage treatment system using renewable energy provided by an embodiment of the present application, the photovoltaic assembly includes at least one photovoltaic panel, and the heat exchange pipe section is wound around the back of each photovoltaic panel.

[0013] In one possible implementation, the sewage treatment system utilizing renewable energy provided in an embodiment of the present application, the energy device further includes a wind power component, a biological turntable is provided in the biochemical pool, the wind power component is connected to the biological turntable, and the wind power component is used to drive the biological turntable to rotate.

[0014] In one possible implementation, the sewage treatment system using renewable energy provided in an embodiment of the present application, the wind power component includes a vertical-axis fan, a transmission member and a transmission connected in sequence, the transmission is connected to the rotating shaft of the biological rotary disk, and the vertical-axis fan is used to drive the biological rotary disk to rotate via the transmission member and the transmission.

[0015] In a possible implementation, in the sewage treatment system using renewable energy provided in the embodiment of the present application, the biological rotary disk is further connected to a drive motor, and the drive motor is electrically connected to the battery;

[0016] The driving motor is configured to be turned off when the vertical-axis fan is in operation, and to be started when the vertical-axis fan stops operating, so as to drive the biological turntable to rotate.

[0017] In a possible implementation, in the sewage treatment system using renewable energy provided in an embodiment of the present application, an aerator is provided in the biochemical pool, the aerator is connected to an aeration air pump, and the aeration air pump is electrically connected to the battery.

[0018] In a possible implementation, in the sewage treatment system using renewable energy provided in the embodiment of the present application, a fixed bed filler is further provided in the biochemical pool;

[0019] The biological rotating disk, the fixed bed filler and the aerator are connected in the biochemical pool in sequence from top to bottom.

[0020] In one possible implementation, in the sewage treatment system utilizing renewable energy provided in an embodiment of the present application, a lift pump is provided in the regulating tank, the inlet of the lift pump is connected to the water outlet of the regulating tank, the outlet of the lift pump is connected to the water inlet of the biochemical tank through a pipeline, and the lift pump is electrically connected to the battery.

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

[0022] In a possible implementation, in the sewage treatment system using renewable energy provided in the embodiment of the present application, the storage battery is also used to be electrically connected to a mains power supply system.

[0023] The sewage treatment system using renewable energy provided by the embodiment of the present application includes a sewage treatment device and an energy device; the energy device includes a photovoltaic module and a battery, and the battery is electrically connected to the photovoltaic module; the sewage treatment device includes a regulating tank, a biochemical tank and a reflux component, the outlet of the regulating tank is connected to the inlet of the biochemical tank, and the reflux component includes a reflux pipe and a reflux pump; 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 battery; the heat exchange pipe section is connected to the photovoltaic module. The reflux pipe section is arranged on the photovoltaic module. In the process of sewage reflux, since the temperature of the sewage is close to the room temperature and the specific heat capacity of the sewage is high, the sewage can be heat exchanged with the photovoltaic module through the heat exchange pipe section, so that the temperature of the photovoltaic module can be kept stable, and the working temperature of the photovoltaic module is prevented from being too high or too low, and the conversion efficiency of the photovoltaic module is greatly affected by the environment and the power generation efficiency is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the embodiments of the present application.

[0025] Figure 1 A schematic diagram of a sewage treatment system utilizing renewable energy provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100- Photovoltaic modules;

[0028] 110- Photovoltaic panels;

[0029] 200-battery;

[0030] 300-regulating tank;

[0031] 310-lift pump;

[0032] 400-biochemical pool;

[0033] 410-Biological turntable;

[0034] 420-Aerator;

[0035] 430-Fixed bed packing;

[0036] 500-Reflow assembly;

[0037] 510- reflux pipe; 511- heat exchange pipe section; 512- first pipe section; 513- second pipe section;

[0038] 520- reflux pump;

[0039] 600- wind power assembly;

[0040] 610-vertical shaft fan;

[0041] 620- transmission parts;

[0042] 630-Transmission;

[0043] 700-driving motor;

[0044] 800 - Aeration air pump.

[0045] The above drawings have shown the clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the embodiments of the present application in any way, but to illustrate the concepts of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application and how the technical solution in the embodiments of the present application solves the above-mentioned technical problems will be clearly and completely described below with specific embodiments and in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0048] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

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

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

[0051] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0052] Using renewable energy such as solar energy to power sewage treatment systems can reduce energy consumption, reduce dependence on traditional power supply systems, reduce operating costs, and conform to the trend of low-carbon and environmental protection.

[0053] The working temperature of photovoltaic panels will affect the morphology of their electric field structure and the energy released by electrons, thus affecting their peak output power. In a high temperature environment, the electron excitation inside the semiconductor material increases, thereby increasing the recombination rate of electrons and holes, which will reduce the efficiency of the photovoltaic effect. In addition, high temperature may also cause the degradation and aging of photovoltaic panel materials, further reducing their long-term stable power generation performance; similarly, in a low temperature environment, the movement speed of electrons inside the semiconductor material will slow down, thereby reducing the conductivity of electrons, affecting the generation of current, and reducing the photovoltaic conversion efficiency.

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

[0055] Based on this, the embodiment of the present application provides a sewage treatment system using renewable energy, including a sewage treatment device and an energy device; the energy device includes a photovoltaic module and a battery, and the battery is electrically connected to the photovoltaic module; the sewage treatment device includes a regulating tank, a biochemical tank and a reflux component, the outlet of the regulating tank is connected to the inlet of the biochemical tank, and the reflux component includes a reflux pipe and a reflux pump; 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 battery; the heat exchange pipe section is connected to the photovoltaic module. The reflux pipe section is arranged on the photovoltaic module. In the process of sewage reflux, since the temperature of the sewage is close to the room temperature and the specific heat capacity of the sewage is high, the sewage can be heat exchanged with the photovoltaic module through the heat exchange pipe section, so that the temperature of the photovoltaic module can be kept stable, and the working temperature of the photovoltaic module is prevented from being too high or too low, and the conversion efficiency of the photovoltaic module is greatly affected by the environment and the power generation efficiency is low.

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

[0057] Figure 1 A schematic diagram of a sewage treatment system utilizing renewable energy provided in an embodiment of the present application.

[0058] Combination Figure 1 As shown, an embodiment of the present application provides a sewage treatment system using renewable energy, including a sewage treatment device and an energy device; the energy device includes a photovoltaic module 100 and a battery 200, and the battery 200 is electrically connected to the photovoltaic module 100; the sewage treatment device includes a regulating tank 300, a biochemical tank 400 and a reflux component 500, the water outlet of the regulating tank 300 is connected to the water inlet of the biochemical tank 400, and the reflux component 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 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 battery 200; the heat exchange pipe section 511 is connected to the photovoltaic module 100, and when the sewage refluxes, the sewage exchanges heat with the photovoltaic module 100 through the heat exchange pipe section 511.

[0059] The regulating tank 300 is usually designed to store a certain amount of sewage to regulate the water quality and water volume of the sewage, and can play a buffering role to prevent sudden pollutants or water volume fluctuations from impacting the subsequent biochemical tank 400. The shape and volume of the regulating tank 300 can be specifically designed in combination with site conditions and treatment requirements, and this application does not limit this.

[0060] The water quality of sewage (such as pollutant concentration, pH value, etc.) may fluctuate greatly. The regulating tank 300 can make the water quality of sewage uniform by mixing sewage from different time periods to reduce the load fluctuation of the subsequent biochemical tank 400. In addition, the sewage flow is unstable and may have peaks and troughs. The regulating tank 300 can store sewage during the peak period and release it during the trough period, thereby making the treatment load of the subsequent biochemical tank 400 more stable.

[0061] Microorganisms are arranged in the biochemical pool 400, which can degrade organic pollutants and some inorganic pollutants in the sewage through the metabolic activities of the microorganisms to reduce the biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of the sewage, thereby improving the stability of the effluent water quality. Furthermore, the biochemical pool 400 can also convert nitrogen and phosphorus in the sewage into gaseous nitrogen or sediment through specific microbial metabolic pathways, thereby achieving denitrification and dephosphorization of the sewage.

[0062] Furthermore, a sewage detection device may be provided in the sewage treatment device to detect indicators in the sewage treatment process of the biochemical pool 400, wherein the sewage detection device may include a total nitrogen detector, a COD detector, and an NH3-N detector, etc.

[0063] It should be noted that the return ratio of sewage from the biochemical pool 400 to the regulating pool 300 is 20% to 100%. The return ratio is the ratio of the amount of sewage returned from the biochemical pool 400 to the regulating pool 300 to the amount of sewage entering the biochemical pool 400 from the regulating pool 300 per unit time. The return ratio of sewage from the biochemical pool 400 to the regulating pool 300 can be flexibly adjusted according to the actual water quality of the sewage.

[0064] By setting up the reflux component 500, the circulation of sewage from the regulating tank 300 to the biochemical tank 400 and then to the regulating tank 300 can be realized. This cyclic treatment method can achieve a more stable sewage treatment effect and can effectively cope with fluctuations in upstream water quality and quantity.

[0065] In specific implementation, the sewage is regulated in the regulating tank 300, and the regulated sewage is discharged into the biochemical tank 400 for further treatment. The sewage treated in the biochemical tank 400 will also flow back to the regulating tank 300 through the reflux component 500. Due to human water use habits, the water temperature of sewage is generally close to room temperature, at about 10°C to 20°C, which is relatively constant, and the specific heat capacity of sewage is relatively high. The heat exchange pipe section 511 of the reflux pipe 510 is set on the photovoltaic module 100. During the sewage reflux process, the sewage flowing through the heat exchange pipe section 511 can exchange heat with the photovoltaic module 100 through the heat exchange pipe section 511, so that the temperature of the photovoltaic module 100 can be kept stable, and the working temperature of the photovoltaic module 100 can be prevented from being too high or too low, so as to ensure the conversion efficiency of the photovoltaic module 100 and improve the power generation efficiency.

[0066] It is understandable that sewage will pass through the photovoltaic module 100 when it flows back. In addition to cooling the photovoltaic module 100 when the temperature is high in summer, the sewage can also heat up the photovoltaic module 100 when the temperature is low in winter, so that the temperature of the photovoltaic module 100 remains stable, thereby improving the conversion efficiency of the photovoltaic module 100.

[0067] In some embodiments, the photovoltaic assembly 100 includes at least one photovoltaic panel 110 , and the heat exchange pipe segment 511 is disposed around the back side of each photovoltaic panel 110 .

[0068] The photovoltaic panel 110 can convert solar energy into direct current, part of which is used for the sewage treatment device; part of which is stored in the battery 200 to power the sewage treatment device when solar energy is not available (such as at night or on cloudy days).

[0069] Exemplarily, the reflux pump 520 may be a direct current pump so as to directly utilize the direct current converted by the photovoltaic panel 110 , thereby achieving higher efficiency in utilizing electric energy.

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

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

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

[0073] In some embodiments, the energy device further includes a wind power component 600 , a biological turntable 410 is disposed in the biochemical pool 400 , and 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.

[0074] It can be understood that the biological rotary disk 410 is a biological treatment device for sewage treatment. The biological rotary disk 410 is composed of a rotating shaft and a plurality of discs installed in parallel on the rotating shaft, and a biofilm is attached to the surface of the disc.

[0075] In the embodiment of the present application, the rotating shaft is horizontally arranged in the biochemical pool 400, and part of the disc is immersed in the sewage in the biochemical pool 400. The wind assembly 600 is connected to the rotating shaft of the biological rotating disc 410 to drive the rotating shaft to drive the disc to rotate, so that the biofilm on the surface of the disc is alternately exposed to the air and sewage. During the rotation of the biological rotating disc 410, the biofilm on the disc will absorb organic pollutants in the sewage and absorb dissolved oxygen in the water film outside the biofilm to decompose the organic matter; when the disc comes into contact with the air, the air will dissolve into the water film, increasing its dissolved oxygen.

[0076] In traditional sewage treatment systems, wind and solar energy are often used to generate electricity first, and then the electricity is used to drive the various electrical equipment in the sewage treatment system. However, the photovoltaic panel 110 generates direct current, and the wind turbine generates alternating current. The two power generation systems generally need to be inverted and converted when they are jointly powered. Not only is the system complex, but it will also inevitably reduce the efficiency of energy conversion. Due to the uncertainty of wind energy, if the wind turbine fails to store or utilize the large amount of electricity it produces, it is necessary to configure a load-unloading resistor to consume the electricity, which causes a waste of energy. Furthermore, in order to store and utilize the electricity generated by wind and solar energy, it is often necessary to configure a large-capacity battery pack (the storage capacity is the amount of electricity required to support the operation of the sewage treatment system for 12 to 24 hours). This not only has high construction and maintenance costs, but also makes it extremely inconvenient to dispose of the battery pack after it is scrapped in the future.

[0077] In the embodiment of the present application, the wind power component 600 is directly connected to the bio-turntable 410, and can directly drive the bio-turntable 410 to rotate, without the need for electrical energy conversion and storage, thereby avoiding the process of converting mechanical energy into electrical energy and then into mechanical energy, and realizing efficient use of wind energy.

[0078] Specifically, the embodiment of the present application utilizes photovoltaic power generation and wind-driven rotation of the biological turntable 410, so that the photovoltaic power generation and wind turbine power generation modes can be used separately, which helps to achieve efficient use of energy. In addition, the direct current generated by photovoltaic power generation can be directly stored in a small-capacity battery pack (the storage capacity is the amount of electricity required to support the operation of the sewage treatment system for 2 to 4 hours), avoiding the problem of inconvenient disposal of large-capacity battery packs, and also reducing construction costs and maintenance costs.

[0079] For example, a small-capacity battery pack may be formed by recycling discarded batteries from electric vehicles and other equipment.

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

[0081] In specific implementation, the operation mode of the vertical axis fan 610 is a kinetic energy mode, which uses wind force to drive the vertical axis fan 610 to rotate, thereby driving the transmission member 620 to rotate, and then driving the transmission 630 to rotate, and then the transmission 630 drives the biological turntable 410 to rotate, thereby realizing efficient use of wind energy.

[0082] Exemplarily, the transmission member 620 may be a transmission shaft, both ends of which may be connected to the fan shaft of the vertical-axis fan 610 and the transmission 630 respectively through couplings to transmit the rotational torque of the vertical-axis fan 610 to the transmission 630 and then to the bio-rotating disk 410 .

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

[0084] In other embodiments, the transmission member 620 can also be a sprocket transmission structure, by installing sprockets on the fan shaft of the vertical-axis fan 610 and the transmission 630 respectively, and connecting them through a chain, so that the torque is transmitted from the vertical-axis fan 610 to the transmission 630 through the engagement of the chain and the sprocket.

[0085] In other embodiments, the transmission member 620 may also be other structures capable of achieving transmission, such as a belt transmission mechanism or a hydraulic coupling, etc., which will not be elaborated in the embodiments of the present application.

[0086] The transmission 630 can change the speed and torque output by the fan shaft of the vertical fan 610. Under the regulation of the transmission 630, the bio-rotating disk 410 can rotate at a specific speed to adapt to different loads and working conditions. The embodiment of the present application does not specifically limit the speed of the bio-rotating disk 410.

[0087] Compared with the traditional method of converting wind energy into electrical energy and storing it in batteries, the embodiment of the present application realizes the transmission of rotational torque from the vertical-axis fan 610 to the bio-rotating disk 410 through the transmission member 620 and the transmission 630, so that the wind energy conversion rate is higher, and the vertical-axis fan 610 can be used immediately without the need for unloading resistors. It can also reduce the use of large-capacity battery packs and reduce construction costs and maintenance costs.

[0088] Specifically, the sewage treatment system using renewable energy provided in the embodiment of the present application utilizes both wind energy and solar energy as renewable energy sources and can achieve a relatively high energy conversion rate, thereby facilitating the stable and efficient operation of the sewage treatment system.

[0089] In some embodiments, the bio-rotating disk 410 is also connected to the drive motor 700, which is electrically connected to the battery 200; the drive motor 700 is configured to be turned off when the vertical axis fan 610 is running; and to be started when the vertical axis fan 610 stops running to drive the bio-rotating disk 410 to rotate.

[0090] Since wind energy is uncertain, by providing a driving motor 700 electrically connected to the battery 200, in a windless state or when other vertical axis fans 610 cannot operate, the biological turntable 410 can be driven to rotate as an auxiliary method to ensure the stable operation of the biochemical pool 400.

[0091] Exemplarily, the driving motor 700 may be a DC motor so as to directly utilize the DC power converted by the photovoltaic panel 110 , thereby achieving higher energy utilization efficiency.

[0092] In some embodiments, an aerator 420 is disposed in the biochemical pool 400 , and the aerator 420 is connected to an aeration air pump 800 , and the aeration air pump 800 is electrically connected to the battery 200 .

[0093] It can be understood that the aerator 420 is a device for providing oxygen to microorganisms in the biochemical tank 400. The aerator 420 can introduce oxygen into the sewage to support the growth and metabolism of aerobic microorganisms, thereby effectively degrading organic pollutants in the sewage.

[0094] Exemplarily, the aerator 420 in the embodiment of the present application is a disc aerator 420 .

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

[0096] Exemplarily, the aeration pump 800 may be a direct current pump so as to directly utilize the direct current converted by the photovoltaic panel 110 , thereby achieving higher efficiency in utilizing electric energy.

[0097] In some embodiments, a fixed bed filler 430 is further disposed in the biochemical pool 400; the biological rotary disk 410, the fixed bed filler 430 and the aerator 420 are sequentially connected in the biochemical pool 400 from top to bottom.

[0098] It is understandable that the fixed bed filler 430 generally has a large specific surface area and a complex geometric structure, which can provide a good attachment and growth environment for microorganisms. Microorganisms in the sewage attach to the surface of the fixed bed filler 430 to form a biofilm, which can absorb organic pollutants and some inorganic pollutants in the sewage and convert them into carbon dioxide and water, etc. With the growth and metabolism of microorganisms, the aged biofilm continues to fall off and new biofilms continue to form, thereby maintaining the activity and efficiency in the biochemical pool 400.

[0099] The embodiment of the present application provides a surface for microorganisms to attach and grow by arranging a fixed bed filler 430 in the biochemical pool 400. The fixed bed filler 430 may be a structure made of plastic, ceramic or other corrosion-resistant materials.

[0100] Traditional sewage treatment devices are mostly horizontal, consisting of multiple parallel treatment tanks. They have the problems of large footprint, shallow effective water depth, low aeration efficiency, limited biomass, and long residence time.

[0101] The embodiment of the present application arranges the bio-rotor 410, the fixed bed filler 430 and the aerator 420 in an upper and lower layout, which can increase the biomass, save the floor space of the sewage treatment device, improve the efficiency of aeration and oxygenation, make the sewage treatment efficiency higher, shorten the required residence time, and help save costs.

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

[0103] It can be understood that the sewage in the regulating tank 300 is transported to the biochemical tank 400 via the lifting pump 310.

[0104] In the sewage treatment device, there may be a height difference between the regulating tank 300 and the biochemical tank 400. The height difference can be overcome by setting the lifting pump 310 to lift the sewage from a low place to a high place to ensure the continuity and stability of the sewage treatment process.

[0105] Exemplarily, the boost pump 310 may be a DC pump so as to directly utilize the DC power converted by the photovoltaic panel 110 , thereby achieving higher energy utilization efficiency.

[0106] In some embodiments, the reflux pipe 510 also 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 specific implementation, under the action of the reflux pump 520, the sewage in the biochemical pool 400 flows through the first pipe section 512, the heat exchange pipe section 511 and the second pipe section 513 in sequence and then enters the regulating pool 300. When the sewage flows through the heat exchange pipe section 511, it can exchange heat with the photovoltaic panel 110, so that the photovoltaic panel 110 is at a stable and suitable working temperature.

[0108] Exemplarily, the heat exchange pipe segment 511 has one section, which is connected in series between the first pipe segment 512 and the second pipe segment 513 . The heat exchange pipe 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 pipe segment 511 may also have multiple sections, each heat exchange pipe segment 511 is connected in parallel between the first pipe segment 512 and the second pipe segment 513, and the heat exchange pipe segment 511 corresponds to the photovoltaic panel 110 one by one and is connected to the back of the corresponding photovoltaic panel 110.

[0110] In other embodiments, the heat exchange pipe segment 511 has multiple sections, each section of the heat exchange pipe segment 511 is connected in series, and each section of the series-connected heat exchange pipe segment 511 is also connected in series between the first pipe segment 512 and the second pipe segment 513. The heat exchange pipe segments 511 correspond one-to-one to the photovoltaic panels 110 and are connected to the back of the corresponding photovoltaic panels 110.

[0111] In some embodiments, the battery 200 is also used to be electrically connected to a mains power supply system.

[0112] By electrically connecting the storage battery 200 to the mains power supply system, the mains power supply system can be used to provide auxiliary power when sunlight is insufficient, so as to ensure stable operation of the sewage treatment device.

[0113] The alternating current provided by the mains power supply system is converted into direct current and then replenished in the battery 200 .

[0114] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the embodiments of the present application, which follows the general principles of the embodiments of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the embodiments of the present application. The specification and embodiments are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

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

Claims

1. A sewage treatment system using renewable energy, characterized in that: Includes sewage treatment plants and energy plants; The energy device comprises a photovoltaic module (100) and a storage battery (200), wherein the storage battery (200) is electrically connected to the photovoltaic module (100); The sewage treatment device comprises a regulating tank (300), a biochemical tank (400) and a reflux component (500), the water outlet of the regulating tank (300) is connected to the water inlet of the biochemical tank (400), and the reflux component (500) comprises a reflux pipe (510) and a reflux pump (520); The reflux pipe (510) comprises a heat exchange pipe section (511), the inlet of the reflux pump (520) is connected to the biochemical pool (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 pool (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 assembly (100), and when sewage flows back, the sewage exchanges heat with the photovoltaic assembly (100) through the heat exchange pipe section (511).

2. The sewage treatment system using renewable energy according to claim 1, characterized in that: The photovoltaic assembly (100) comprises at least one photovoltaic panel (110), and the heat exchange pipe section (511) is wound around the back side of each photovoltaic panel (110).

3. The sewage treatment system using renewable energy according to claim 1, characterized in that: The energy device further comprises a wind power component (600), a biological turntable (410) is arranged in the biochemical pool (400), 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 sewage treatment system using renewable energy according to claim 3, characterized in that: The wind power assembly (600) includes a vertical shaft fan (610), a transmission member (620) and a transmission (630) which are connected in sequence. The transmission (630) is connected to the rotating shaft of the biological turntable (410). The vertical shaft fan (610) is used to drive the biological turntable (410) to rotate via the transmission member (620) and the transmission (630).

5. The sewage treatment system using renewable energy according to claim 4, characterized in that: The bio-rotating disk (410) is also connected to a driving motor (700), and the driving motor (700) is electrically connected to the storage battery (200); The driving motor (700) is configured to be turned off when the vertical-axis fan (610) is in operation, and to be started when the vertical-axis fan (610) stops operating, so as to drive the biological turntable (410) to rotate.

6. The sewage treatment system using renewable energy according to any one of claims 3 to 5, characterized in that: An aerator (420) is provided in the biochemical pool (400), the aerator (420) is connected to an aeration pump (800), and the aeration pump (800) is electrically connected to the storage battery (200).

7. The sewage treatment system using renewable energy according to claim 6, characterized in that: A fixed bed filler (430) is also provided in the biochemical pool (400); The biological rotating disk (410), the fixed bed filler (430) and the aerator (420) are sequentially connected in the biochemical pool (400) from top to bottom.

8. The sewage treatment system using renewable energy according to any one of claims 1 to 5, characterized in that: A lifting pump (310) is arranged in the regulating pool (300); the inlet of the lifting pump (310) is connected to the water outlet of the regulating pool (300); the outlet of the lifting pump (310) is connected to the water inlet of the biochemical pool (400) through a pipeline; and the lifting pump (310) is electrically connected to the storage battery (200).

9. The sewage treatment system using renewable energy according to any one of claims 1 to 5, characterized in that: The reflux pipe (510) further comprises 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).

10. The sewage treatment system using renewable energy according to any one of claims 1 to 5, characterized in that: The storage battery (200) is also used to be electrically connected to a mains power supply system.

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