Modular cogeneration green energy-saving improvement system

Abstract

This utility model provides a modular co-production green energy-saving improvement system, belonging to the technical field of energy-saving improvement systems. This modular co-production green energy-saving improvement system includes: a subsystem for using rainwater and shower wastewater for toilet flushing, including a water storage and purification module, a piston pump water module, and a water supply switching module; a subsystem for using kitchen wastewater for greening irrigation, including a physical grease trap module and a biological purification module; and a subsystem for using fecal wastewater for biogas lighting, including a biogas fermentation module and a purification and utilization module. It comprehensively realizes the deep recycling of rainwater and wastewater, saving precious water resources, significantly reducing wastewater discharge, and, without generating additional wastewater and waste gas, innovatively fills the gap in biogas utilization in urban communities, powerfully promoting the development and utilization of biomass energy, demonstrating extremely high innovative value and practical efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of energy-saving improvement systems, specifically relating to a modular cogeneration green energy-saving improvement system. Background Technology

[0002] Reclaimed water, as an important water resource recycling method, has attracted much attention globally and become a subject of extensive research. Greywater, also known as recycled water, is the product of strict urban wastewater treatment processes. Its water quality parameters fall between drinking water standards and wastewater discharge standards, ensuring safe and reasonable non-potable uses while effectively conserving water resources.

[0003] However, current domestic sewage collection and reuse systems often rely on expensive and energy-intensive machinery, such as water pumps. This not only increases operating costs but also presents numerous challenges for widespread application. Furthermore, the enormous potential of sewage remains to be further explored, particularly in its conversion into clean energy and biogas through anaerobic digestion. Although biogas is relatively maturely applied in agricultural and rural areas, its production and utilization in urban environments lags behind due to management and technological limitations. Utility Model Content

[0004] The purpose of this invention is to provide a modular, co-production, green, and energy-saving improvement system. This system aims to address the current widespread problem in domestic sewage collection and reuse systems, which often rely on expensive and energy-intensive mechanical equipment such as water pumps. This not only increases operating costs but also faces numerous challenges in large-scale application. Furthermore, the enormous potential of sewage remains to be further explored, particularly in its conversion into clean energy and biogas through anaerobic digestion. Although biogas is relatively maturely applied in agricultural and rural areas, its production and utilization in urban environments lags behind due to management and technological limitations.

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

[0006] Modular cogeneration green energy-saving improvement system, including:

[0007] Rainwater and shower wastewater are used in the toilet flushing system, which includes a water storage and purification module, a piston pump water module, and a water supply switching module;

[0008] Kitchen wastewater is used in a greening irrigation subsystem, which includes a physical grease trap and a biological purification module;

[0009] The sewage is used in the biogas lighting subsystem, which includes a biogas fermentation module and a purification and utilization module;

[0010] cushion;

[0011] The piston pump module includes a return spring, a piston, a one-way valve a, and a one-way valve b. The return spring and the piston are both fixedly connected to the lower end of the seat cushion. The lower end of the seat cushion is provided with a pipe, and the piston is located inside the pipe. The one-way valve a and the one-way valve b are both connected to the pipe and are used to pump shower wastewater into the water supply switching module.

[0012] The water supply switching module includes a float valve, a float valve, a shower wastewater inlet pipe, a tap water pipe, a rainwater pipe, an overflow pipe, and an outlet pipe, which are used to realize the automatic switching between rainwater and tap water. The float valve and the float valve are both located in the toilet tank. The bottom of the float valve is connected to the tap water pipe, and the bottom of the float valve is connected to the rainwater pipe. The two sides of the tank are connected to the shower wastewater and the overflow pipe, respectively, and there is an outlet pipe at the bottom.

[0013] The physical grease trap module includes a water inlet, a corrugated inclined plate, an oil outlet, a purification tank, a water outlet, a filter screen, and a sewage outlet. It is used to separate grease from kitchen wastewater. The device is located on the lower side of the kitchen wastewater and connected by a pipe. The corrugated inclined plate is located inside the cavity. The water inlet, oil outlet, water outlet, and sewage outlet are all connected to the cavity. The purification tank and filter screen are both located inside the cavity.

[0014] The biogas fermentation module includes an inlet pipe, an inclined plate grid, an outlet pipe, a funnel-shaped water collection pipe, a feed inlet, a gas guide pipe, a water pressure chamber, and a fermentation chamber. It is used to achieve manure-water separation and biogas generation. The biogas fermentation module is connected to a toilet through the inlet pipe. The inclined plate grid is fixed in the cavity. The outlet pipe is fixed in the cavity. The funnel-shaped water collection pipe is fixed to the lower side of the wall. The fermentation chamber is located on the lower side of the cavity. The feed inlet, the gas guide pipe, and the water pressure chamber are all connected to the fermentation chamber.

[0015] The purification and utilization module includes a gravity-type gas-water separator and a desulfurization device, which are used to purify biogas and supply lighting to the community.

[0016] As a preferred embodiment of this utility model, the piston pump module drives the piston to move by human weight, pumping shower wastewater into the water supply switching module through one-way valve a. A reset spring is used to reset the piston, and one-way valve b prevents water from flowing back.

[0017] As a preferred embodiment of this utility model, the corrugated inclined plate of the physical oil separator module is used to adsorb grease, the oil outlet discharges the separated grease, the purification tank is filled with quartz sand and activated carbon, the water outlet discharges purified water, and the sewage outlet is used to clean the sediment.

[0018] As a preferred embodiment of this utility model, the inclined plate grid of the biogas fermentation module is used for manure-water separation. Solid manure enters the fermentation chamber through the water outlet pipe, and liquid is discharged into the municipal pipeline through the funnel-shaped water collection pipe. The fermentation chamber is connected to the water pressure chamber through the gas guide pipe. The gravity-type gas-water separator of the purification and utilization module is used to remove moisture from the biogas. The desulfurization device uses active iron oxide to remove hydrogen sulfide. The purified biogas is used for community street lighting.

[0019] In a preferred embodiment of this utility model, the float valve 1 of the water supply switching module is used to control the entry of rainwater, and the float valve 2 is used to control the entry of tap water; when the liquid level is higher than the water level B, the float valve 2 is closed and the float valve 1 is opened; when the liquid level is lower than the water level B, the float valve 2 is opened and the float valve 1 is closed.

[0020] As a preferred embodiment of this utility model, the energy-saving and emission-reduction benefits of the system are calculated using the following formula:

[0021] Roof rainwater collection capacity:

[0022] Q1=0.9×0.97×0.87×15000×1292.3×10 -3 =14723m 3 ;

[0023] Where ψ is the runoff coefficient; α is the seasonal reduction coefficient, usually 0.97; β is the initial abandonment coefficient, usually 0.87; A is the horizontal projected area of ​​the roof, the total horizontal projected area of ​​the Bowen Garden roof is 15,000 square meters; H is the average annual rainfall;

[0024] Shower wastewater collection volume:

[0025] Q2 = 39.6 × 10 -3 ×3184×365×0.8=36817m 3 ;

[0026] The average daily shower water consumption per person is 39.6L. According to calculations, based on an 80% recycling rate, the theoretical value of the shower water that can be collected annually in the entire community is Q2.

[0027] Kitchen wastewater collection volume:

[0028] Q3 = 29.6 × 10 -3 ×3184×365×0.8=27520m 3 ;

[0029] The average household uses 29.6L of kitchen water per person per day. According to calculations, based on an 80% recycling rate, the theoretical value of kitchen wastewater that can be collected annually in the entire community is Q3.

[0030] Biogas lighting utilization:

[0031] W1=0.6×136×365=29784kw·h;

[0032] A 50kg adult can produce 15m³ of feces per year. 3 According to calculations, the daily biogas production of the community is 90.12 m³. 3 If we use biogas lamps, the total annual electricity savings will be W1.

[0033] Compared with the prior art, the beneficial effects of this utility model are:

[0034] 1. In this solution, firstly, in the water resource reuse stage, a toilet water supply switching module technology is creatively adopted. This integrates rainwater collected from the roof, shower wastewater generated on the same floor, and even some high-quality tap water resources. Through precise control and distribution, it scientifically and rationally serves the toilet flushing needs, thereby significantly improving the secondary utilization rate of wastewater, optimizing the toilet water supply system, ensuring that the entire process is clean and efficient, with no additional pollution generated, and requiring no additional energy input. A carefully designed biogas module for the co-fermentation of fecal wastewater and kitchen grease successfully transforms these two biomass-rich wastes into clean biogas that can be used for community landscape lighting, replacing traditional electric street lighting. This not only saves a lot of electricity but also effectively reduces the burden on the city's municipal sewage treatment system, demonstrating forward-looking ecological wisdom. It fully realizes the deep recycling of rainwater and sewage, saves precious water resources, significantly reduces sewage discharge, and innovatively fills the gap in urban community biogas utilization without generating additional wastewater and exhaust gas. This powerfully promotes the development and utilization of biomass energy and demonstrates extremely high innovative value and practical efficiency.

[0035] 2. In this plan, secondly, in terms of kitchen wastewater management, a dual treatment mode of physical oil separation and biological purification is adopted. With the help of professional modules, kitchen wastewater undergoes rigorous filtration, separation and ecological purification, and is transformed into a reusable water source suitable for landscape irrigation and vegetation maintenance. This reduces the amount of untreated wastewater discharged. At the same time, the separated oil is incorporated into the biogas fermentation process and transformed into a valuable renewable energy source.

[0036] 3. In addition, based on the concept of no additional energy consumption, this design has also developed a unique shower wastewater piston pump module. It can efficiently recover and boost the shower wastewater generated on the same floor without the need for external power. It works in conjunction with the water supply switching module to jointly promote the innovation of the toilet water supply structure, ensuring that not only is zero secondary pollution achieved in the entire operation process, but also energy waste is effectively avoided. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is the overall design drawing of the model of this utility model;

[0039] Figure 2 This is a flowchart illustrating the workflow of this utility model.

[0040] Figure 3 This is a diagram of the piston pump water module of this utility model;

[0041] Figure 4 This is a schematic diagram of the water supply switching module of this utility model.

[0042] Figure 5 This is a schematic diagram of the oil module structure of this utility model;

[0043] Figure 6 This is a structural diagram of the sewage separation method of this utility model;

[0044] Figure 7 This is a schematic diagram of the biogas digester of this utility model.

[0045] Figure 8 This is a flowchart illustrating the purification and utilization process of this utility model.

[0046] In the diagram: 1. Check valve a; 2. Check valve b; 3. Seat cushion; 4. Return spring; 5. Piston; 6. Water inlet; 7. Corrugated inclined plate; 8. Oil outlet; 9. Purification tank; 10. Water outlet; 11. Filter screen; 12. Sewage outlet; 13. Water inlet pipe; 14. Inclined grid; 15. Water outlet pipe; 16. Funnel-shaped water collection pipe; 17. Feed inlet; 18. Air guide pipe; 19. Water pressure chamber; 20. Fermentation chamber. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] Example 1

[0049] Please see Figures 1-8 The present invention provides the following technical solution:

[0050] Modular cogeneration green energy-saving improvement system, including:

[0051] Rainwater and shower wastewater are used in the toilet flushing system, which includes a water storage and purification module, a piston pump water module, and a water supply switching module;

[0052] Kitchen wastewater is used in a greening irrigation subsystem, which includes a physical grease trap and a biological purification module;

[0053] The sewage is used in the biogas lighting subsystem, which includes a biogas fermentation module and a purification and utilization module;

[0054] Seat cushion 3;

[0055] The piston pump module includes a return spring 4, a piston 5, a one-way valve a1, and a one-way valve b2. The return spring 4 and the piston 5 are both fixedly connected to the lower end of the seat cushion 3. The lower end of the seat cushion 3 is provided with a pipe, and the piston 5 is located inside the pipe. The one-way valve a1 and the one-way valve b2 are both connected to the pipe and are used to pump the shower wastewater into the water supply switching module.

[0056] The water supply switching module includes float valve 1, float valve 2, shower wastewater inlet pipe, tap water pipe, rainwater pipe, overflow pipe and outlet pipe, which are used to realize the automatic switching between rainwater and tap water. Float valve 1 and float valve 2 are both located in the toilet tank. The bottom of float valve 2 is connected to the tap water pipe, and the bottom of float valve 1 is connected to the rainwater pipe. The two sides of the tank are connected to the shower wastewater and the overflow pipe, respectively, and there is an outlet pipe at the bottom.

[0057] The physical grease trap module includes an inlet 6, a corrugated inclined plate 7, an oil outlet 8, a purification tank 9, an outlet 10, a filter screen 11, and a drain outlet 12. It is used to separate grease from kitchen wastewater. The device is located on the lower side of the kitchen wastewater and connected by a pipe. The corrugated inclined plate 7 is located inside the cavity. The inlet 6, oil outlet 8, outlet 10, and drain outlet 12 are all connected to the cavity. The purification tank 9 and the filter screen 11 are both located inside the cavity.

[0058] The biogas fermentation module includes an inlet pipe 13, an inclined plate grid 14, an outlet pipe 15, a funnel-shaped water collection pipe 16, a feed inlet 17, a gas guide pipe 18, a water pressure chamber 19, and a fermentation chamber 20. It is used to achieve manure-water separation and biogas generation. The biogas fermentation module is connected to the toilet through the inlet pipe 13. The inclined plate grid 14 is fixed in the cavity. The outlet pipe 15 is fixed in the cavity. The funnel-shaped water collection pipe 16 is fixed to the lower side of the wall. The fermentation chamber 20 is located on the lower side of the cavity. The feed inlet 17, the gas guide pipe 18, and the water pressure chamber 19 are all connected to the fermentation chamber 20.

[0059] The purification and utilization module includes a gravity-type gas-water separator and a desulfurization device, which are used to purify biogas and supply lighting to the community.

[0060] In a specific embodiment of this utility model, the water storage and purification module collects rainwater and shower wastewater, stores it after preliminary sedimentation and filtration, and the piston pump module, when the user sits on the seat cushion 3, causes the piston 5 to move downward under pressure, pushing the shower wastewater through the one-way valve b2 into the water supply switching module; when the user gets up, the return spring 4 resets the piston 5, drawing in new wastewater through the one-way valve a1, realizing circulation pumping. This utilizes the necessary actions of people using the toilet, converting the gravitational potential energy of the human body into pump power. The structure is simpler, the cost is lower, and no additional energy is required. The structural principle is as follows: Figure 3 As shown, the water supply switching module automatically switches the water source via float valves 1 and 2. When there is sufficient rainwater, float valve 1 opens, prioritizing rainwater use; when rainwater is insufficient, float valve 2 opens, switching to tap water. An overflow pipe prevents the tank from overfilling, and the outlet pipe connects to the toilet flushing system. When the water level reaches point B or above, float valve 2 closes; when the water level reaches point A or above, float valve 1 closes. Its structural principle is as follows... Figure 4 Float valve 1 controls rainwater inflow, and float valve 2 controls tap water inflow. The physical grease trap module works as follows: kitchen wastewater enters through inlet 6, and corrugated inclined plates 7 slow the flow, causing grease to float to the outlet 8 for discharge; solid particles settle at outlet 12, where filter screen 11 further intercepts impurities. Purified water flows out from outlet 10. Due to the lower density of oil than water, oil naturally forms a floating layer on the water surface. When kitchen wastewater passes through the corrugated inclined plates, oil particles, due to their hydrophobic and buoyant properties, selectively adsorb and rise along the lower surface of the inclined plates, eventually converging at the outlet on the water surface for effective discharge. Simultaneously, sludge particles in the wastewater are effectively intercepted by the corrugated plates, sliding down the plate surface and settling to the bottom of the tank, where they can be cleaned through a dedicated outlet. The highlight of this grease trap design is its significantly reduced [time / length]. The floating path of oil particles significantly improves the efficiency of oil-water separation. Wastewater that has completed the initial oil separation treatment will further enter the purification tank, which is filled with media such as quartz sand and activated carbon. This effectively removes impurities and odors from the wastewater, laying a good foundation for the subsequent biological purification process and ensuring better overall wastewater treatment results. Biological purification module: The purification tank 9 is filled with microbial carriers, which degrade organic matter through aerobic-anaerobic reactions to ensure that the effluent meets irrigation standards. The core mechanism of the biological purification module cleverly utilizes aquatic plant communities with strong root systems, such as cattails, as well as specific shrubs and other aquatic edge plants. Their roots weave a dense ecological filter in the water, which quickly decomposes and transforms suspended organic matter in the water with its efficient interception and adsorption capabilities. In addition, these aquatic plants can also actively absorb and metabolize various harmful substances in the water, thereby improving water quality.

[0061] During this process, the microenvironment around the roots is very conducive to the reproduction and growth of aerobic bacteria, forming a natural biological filtration barrier. These microbial communities actively participate in the wastewater purification chain, working together to significantly improve the wastewater treatment efficiency.

[0062] The effluent treated by this biological purification module can usually meet the national Class II or Class III surface water quality standards, and even meet the more stringent requirements for urban greening water quality. Therefore, the purified water resources can be safely used for purposes such as irrigation of community road green spaces.

[0063] Taking into account the aesthetic value, economic benefits, and excellent purification performance of plants, when implementing such projects, aquatic plants such as cattails and sweet flag, which have both ornamental value and strong purification function, are preferred to meet the challenges of biological purification of kitchen wastewater.

[0064] Biogas fermentation module: Fecal sewage enters through inlet pipe 13, solids are separated by inclined plate grid 14, and liquids are discharged through outlet pipe 15. Funnel-shaped water collection pipe 16 collects fermentation liquid, gas guide pipe 18 leads biogas to purification and utilization module, water pressure chamber 19 regulates gas pressure, and feed inlet 17 replenishes raw materials periodically.

[0065] The subsystem is carefully planned into two key components: a biogas fermentation unit and a purification and utilization unit. In view of the high moisture content of urban sewage, we have specially configured advanced sewage separation facilities in the biogas fermentation module to achieve efficient solid-liquid separation.

[0066] Purification and utilization module: Biogas passes sequentially through a gravity-type gas-water separator (to remove moisture) and a desulfurization device (to remove hydrogen sulfide). The purified biogas is then supplied to the community's lighting system.

[0067] In the biogas production stage, considering that biogas contains non-ideal components such as hydrogen sulfide, in order to ensure the safety and purity of biogas, we have added a purification process. After the biogas is processed by a precision purification process, its purity is greatly improved, and potential impurities are successfully removed, making it cleaner and more usable.

[0068] Ultimately, the purified, high-quality biogas will be effectively utilized in the community's street lighting system, realizing the resource utilization of waste while also providing a sustainable clean energy solution, helping to create a green, energy-saving, and livable environment.

[0069] Please refer to the details. Figures 1-8 The piston pump module drives the piston 5 to move by the weight of the person, pumping the shower wastewater into the water supply switching module through the one-way valve a1. The reset spring 4 is used to reset the piston, and the one-way valve b2 prevents water from flowing back.

[0070] In this embodiment: the piston pump module drives the piston 5 to move using the weight of the user. When the user sits on the seat cushion 3, the piston 5 presses down, pushing the shower wastewater through the one-way valve b2 into the water supply switching module. When the user gets up, the return spring 4 returns the piston 5 to its original position, and at the same time, the one-way valve a1 opens, drawing in new shower wastewater. The one-way valve b2 prevents backflow, ensuring that wastewater can only flow into the water supply switching module in one direction. This is suitable for homes or public restrooms. After preliminary filtration, the shower wastewater is stored in a low-level water tank. Each time the user uses the toilet, the wastewater is automatically pumped to the toilet tank when the user sits down, requiring no additional energy.

[0071] Please refer to the details. Figures 1-8 The corrugated inclined plate 7 of the physical oil separator is used to absorb grease, the oil outlet 8 discharges the separated grease, the purification tank 9 is filled with quartz sand and activated carbon, the water outlet 10 discharges the purified water, and the sewage outlet 12 is used to clean the sediment.

[0072] In this embodiment: the corrugated inclined plate 7 of the physical oil separator module is used to slow down the water flow and absorb grease, which floats to the oil outlet 8 and is discharged; the purification tank 9 is filled with quartz sand and activated carbon to further absorb organic matter and odors; the water outlet 10 discharges purified water, which can be used for greening irrigation; the sewage outlet 12 is cleaned regularly to remove sediment and prevent blockage. After the kitchen sewage is initially separated from the grease by the corrugated inclined plate 7, it enters the purification tank 9 for deep filtration. The oil outlet 8 is connected to the oil collection tank for easy recycling of waste oil; the water outlet 10 is connected to the drip irrigation system to realize the reuse of wastewater.

[0073] Please refer to the details. Figures 1-8 The inclined plate grid 14 of the biogas fermentation module is used for manure-water separation. Solid manure enters the fermentation chamber 20 through the water outlet pipe 15, and liquid is discharged into the municipal pipeline through the funnel-shaped water collection pipe 16. The fermentation chamber 20 is connected to the water pressure chamber 19 through the gas guide pipe 18. The gravity gas-water separator of the purification and utilization module is used to remove moisture from the biogas. The desulfurization device uses active iron oxide to remove hydrogen sulfide. The purified biogas is used for community street lighting.

[0074] In this embodiment: the inclined plate grid 14 of the biogas fermentation module achieves manure-water separation. Solid manure enters the fermentation chamber 20 through the outlet pipe 15 for anaerobic fermentation, while liquid is discharged into the municipal pipeline through the funnel-shaped water collection pipe 16 to avoid blockage. The fermentation chamber 20 and the water pressure chamber 19 are connected through the gas guide pipe 18 to maintain gas pressure balance. A gravity-type gas-water separator removes moisture from the biogas, and the desulfurization device uses activated iron oxide (Fe2O3) to remove hydrogen sulfide (H2S). The purified biogas is used for community street lighting and is suitable for community septic tank renovation. It can process approximately 500 kg of manure per day and produce approximately 16,425 m³ of biogas per year. 3 .

[0075] Please refer to the details. Figures 1-8The float valve 1 of the water supply switching module is used to control the entry of rainwater, and the float valve 2 is used to control the entry of tap water. When the liquid level is higher than the water level B, the float valve 2 is closed and the float valve 1 is opened. When the liquid level is lower than the water level B, the float valve 2 is opened and the float valve 1 is closed.

[0076] In this embodiment: when the water level in the tank is higher than water level B (when there is sufficient rainwater), float valve 2 is closed and float valve 1 is opened, and rainwater is used preferentially. When the water level is lower than water level B (when there is insufficient rainwater), float valve 2 is opened and float valve 1 is closed, and the system automatically switches to tap water.

[0077] Please refer to the details. Figures 1-8 The energy-saving and emission-reduction benefits of the system are calculated using the following formula:

[0078] Roof rainwater collection capacity:

[0079] Q1=0.9×0.97×0.87×15000×1292.3×10 -3 =14723m 3 ;

[0080] Where ψ is the runoff coefficient; α is the seasonal reduction coefficient, usually 0.97; β is the initial abandonment coefficient, usually 0.87; A is the horizontal projected area of ​​the roof, the total horizontal projected area of ​​the Bowen Garden roof is 15,000 square meters; H is the average annual rainfall;

[0081] Shower wastewater collection volume:

[0082] Q2 = 39.6 × 10 -3 ×3184×365×0.8=36817m 3 ;

[0083] The average daily shower water consumption per person is 39.6L. According to calculations, based on an 80% recycling rate, the theoretical value of the shower water that can be collected annually in the entire community is Q2.

[0084] Kitchen wastewater collection volume:

[0085] Q3 = 29.6 × 10 -3 ×3184×365×0.8=27520m 3 ;

[0086] The average household uses 29.6L of kitchen water per person per day. According to calculations, based on an 80% recycling rate, the theoretical value of kitchen wastewater that can be collected annually in the entire community is Q3.

[0087] Biogas lighting utilization:

[0088] W1=0.6×136×365=29784kw·h;

[0089] A 50kg adult can produce 15m³ of feces per year. 3 According to calculations, the daily biogas production of the community is 90.12 m³. 3 If we use biogas lamps, the total annual electricity savings will be W1.

[0090] In this embodiment, a residential community in a certain area is taken as the research object for analysis and calculation. According to the survey, the community currently has 3184 residents, 17 buildings, 11 septic tanks, 136 courtyard lights, and a total roof area of ​​15000 m². The average annual rainfall in this area reaches 1292.3 mm. Based on the annual average rainfall of the building roof area, the formula Q=ψ×α×β×A×H×10 can be directly applied. -3[5] The theoretical annual rainwater collection volume of the entire community is Q1. The average daily shower water consumption per person is 39.6L. Based on calculations and an 80% recycling rate, the theoretical annual shower water collection volume of the entire community is Q2. Referring to my country's domestic water consumption standards, the average daily kitchen water consumption per household is 29.6L. Based on calculations and an 80% recycling rate, the theoretical annual kitchen wastewater collection volume of the entire community is Q3. This is based on research data from relevant literature. [7] A 50kg adult can produce 15m³ of feces per year. 3 According to calculations, the daily biogas production of the community is 90.12 m³. 3 If we use biogas lamps, the total annual electricity savings will be W1.

[0091] The working principle and usage process of this utility model: Rainwater from the roof enters the water storage and purification module through the drain pipe. Initial rainwater (containing impurities) is discharged through the diversion device (β=0.87). After being filtered by quartz sand and activated carbon, the rainwater is stored in an underground rainwater tank. Shower wastewater enters the low-level water storage tank through the floor drain, where impurities such as hair are initially filtered. When the user sits on the toilet seat 3, the piston 5 is pressed down, pushing the wastewater through the one-way valve b2 into the toilet tank. After the user gets up, the return spring 4 returns the piston 5 to its original position, and at the same time, the one-way valve a1 opens, drawing in new wastewater and forming a cycle. Kitchen sewage enters from the inlet 6, and the flow rate is slowed down by the corrugated inclined plate 7, causing grease to float to the top. The residue settles to the bottom at the oil outlet 8 and is cleaned regularly through the sewage outlet 12. The sewage passes through the filter screen 11 to remove suspended solids and flows into the purification tank 9, where it adsorbs organic matter and odors. The purified water is discharged from the outlet 10 and used for drip irrigation of the community's green spaces. The fecal sewage is separated by the inclined plate grid 14. The solid enters the fermentation chamber 20 to produce biogas through anaerobic digestion, while the liquid is discharged into the municipal pipe network through the funnel-shaped water collection pipe 16. The feces are decomposed by microorganisms in the fermentation chamber 20 to produce biogas. The biogas first passes through a gravity gas-water separator to remove moisture and then passes through an active iron oxide and desulfurization device to remove hydrogen sulfide. The purified biogas is stored in a gas holder and supplied to the community's streetlights or kitchen gas.

[0092] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular co-generation green energy improvement system, characterized by, include: Rainwater and shower wastewater are used in the toilet flushing system, which includes a water storage and purification module, a piston pump water module, and a water supply switching module; Kitchen wastewater is used in a greening irrigation subsystem, which includes a physical grease trap and a biological purification module; The sewage is used in the biogas lighting subsystem, which includes a biogas fermentation module and a purification and utilization module; Seat cushion (3); The piston pump module includes a reset spring (4), a piston (5), a one-way valve a (1) and a one-way valve b (2). The reset spring (4) and the piston (5) are fixedly connected to the lower end of the seat cushion (3). The lower end of the seat cushion (3) is provided with a pipe. The piston (5) is located inside the pipe. The one-way valve a (1) and the one-way valve b (2) are both connected to the pipe and are used to pump shower wastewater into the water supply switching module. The water supply switching module includes a first float valve, a second float valve, a shower wastewater inlet pipe, a tap water pipe, a rainwater pipe, an overflow pipe, and an outlet pipe, which are used to realize the automatic switching between rainwater and tap water. The first float valve and the second float valve are both located in the toilet tank. The lower side of the second float valve is connected to the tap water pipe, and the lower side of the first float valve is connected to the rainwater pipe. The two sides of the tank are respectively connected to the shower wastewater and the overflow pipe, and there is an outlet pipe at the bottom. The physical oil-water separator module includes an inlet (6), a corrugated inclined plate (7), an oil outlet (8), a purification tank (9), an outlet (10), a filter screen (11), and a drain outlet (12), and is used to separate grease from kitchen wastewater. The physical oil-water separator module is located on the lower side of the kitchen wastewater and connected by a pipe. The corrugated inclined plate (7) is located in the cavity. The inlet (6), oil outlet (8), outlet (10), and drain outlet (12) are all connected to the cavity. The purification tank (9) and the filter screen (11) are both located in the cavity. The biogas fermentation module includes an inlet pipe (13), an inclined plate grid (14), an outlet pipe (15), a funnel-shaped water collection pipe (16), a feed inlet (17), a gas guide pipe (18), a water pressure chamber (19), and a fermentation chamber (20), which are used to achieve manure-water separation and biogas generation. The biogas fermentation module is connected to the toilet through the inlet pipe (13). The inclined plate grid (14) is fixed in the cavity. The outlet pipe (15) is fixed in the cavity. The funnel-shaped water collection pipe (16) is fixed to the lower side of the wall. The fermentation chamber (20) is located on the lower side of the cavity. The feed inlet (17), the gas guide pipe (18), and the water pressure chamber (19) are all connected to the fermentation chamber (20). The purification and utilization module includes a gravity-type gas-water separator and a desulfurization device, which are used to purify biogas and supply lighting to the community.

2. The modular co-generation green energy saving improvement system of claim 1, wherein: The piston pump module drives the piston (5) to move by human weight, and pumps the shower wastewater into the water supply switching module through the one-way valve a (1). The reset spring (4) is used to reset the piston, and the one-way valve b (2) prevents water from flowing back.

3. The modular co-generation green energy saving improvement system of claim 2, wherein: The corrugated inclined plate (7) of the physical oil separator module is used to adsorb grease, the oil outlet (8) discharges the separated grease, the purification tank (9) is filled with quartz sand and activated carbon, the water outlet (10) discharges the purified water, and the sewage outlet (12) is used to clean the sediment.

4. The modular co-generation green energy saving improvement system of claim 3, wherein: The inclined plate grid (14) of the biogas fermentation module is used for manure-water separation. Solid manure enters the fermentation chamber (20) through the water outlet pipe (15), and liquid is discharged into the municipal pipeline through the funnel-shaped water collection pipe (16). The fermentation chamber (20) and the water pressure chamber (19) are connected through the gas guide pipe (18). The gravity gas-water separator of the purification and utilization module is used to remove water from the biogas. The desulfurization device uses active iron oxide to remove hydrogen sulfide. The purified biogas is used for community street lighting.

5. The modular co-generation green energy saving improvement system of claim 4, wherein: The first float valve of the water supply switching module is used to control the entry of rainwater, and the second float valve is used to control the entry of tap water. When the liquid level is higher than water level B, the second float valve is closed and the first float valve is opened. When the liquid level is lower than water level B, the second float valve is opened and the first float valve is closed.

Images