A rural sewage resource utilization system

Abstract

The present invention discloses a rural sewage resource utilization system, which belongs to the technical field of domestic sewage, and includes a septic tank and a second solid-liquid separation system: the septic tank is connected with a sewage extraction system and a bottom mud extraction system; the sewage extraction system is connected with a spray system and an anaerobic treatment system; the anaerobic treatment system is connected with a detection shunt system; the detection shunt system is connected with an aerobic treatment system and an artificial wetland / farmland; the bottom mud extraction system is connected with a first solid-liquid separation system, and the first solid-liquid separation system is connected with the anaerobic treatment system through a pipeline; the aerobic treatment system and the anaerobic treatment system are both connected with the first solid-liquid separation system; the first solid-liquid separation system has a soil system. Through the above-mentioned method, the present invention processes and adjusts according to real-time data and feedback data of a farmland soil monitoring instrument, performs aerobic treatment as needed, and effectively reduces the energy consumption of aerobic treatment; the fermented soil is returned to the field, and the use of nitrogen fertilizer and phosphorus fertilizer in the farmland is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of domestic sewage, and in particular to a rural sewage resource utilization system. Background Art

[0002] The main characteristics of rural domestic sewage are: mainly wastewater from washing rice, vegetables, showers and toilets; it contains high levels of human and animal feces and urine, high nitrogen and phosphorus content, and excessive treatment, resulting in waste of resources. In order to save water resources and protect the environment, a treatment system will be designed to treat domestic sewage.

[0003] China patent CN114524519B integrated decentralized biofilter system for rural sewage treatment; the above treatment system does not perform subsequent treatment on the sludge, and the sludge needs to be reprocessed by landfill, incineration or treatment plant, which is not conducive to the resource reuse of sludge;

[0004] Chinese patent CN111439898A discloses an existing rural sewage treatment system; the treatment system first performs anaerobic treatment and then aerobic treatment after sewage filtration, and does not test the water quality. It is easy to perform aeration aerobic treatment when aerobic treatment is not needed, which easily leads to energy waste.

[0005] Based on this, the present invention designs a rural sewage resource utilization system to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a rural sewage resource utilization system.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A rural sewage resource utilization system includes a septic tank for storing black water of rural sewage and a second solid-liquid separation system for solid-liquid separation of gray water of rural sewage:

[0009] The septic tank is connected to a sewage extraction system for sewage extraction and a sludge extraction system for sludge extraction;

[0010] The sewage extraction system is connected to a spray system for fermentation spraying and an anaerobic treatment system for anaerobic treatment;

[0011] The anaerobic treatment system is connected to a detection diversion system for liquid detection;

[0012] The detection and diversion system is connected to an aerobic treatment system and an artificial wetland / farmland for aerobic reaction, and the aerobic treatment system is connected to the artificial wetland / farmland;

[0013] The sediment extraction system is connected to a first solid-liquid separation system for solid-liquid separation of the sediment, and the first solid-liquid separation system is connected to the anaerobic treatment system through a pipeline;

[0014] The aerobic treatment system and the anaerobic treatment system are both connected to the first solid-liquid separation system;

[0015] The first solid-liquid separation system is connected to a soil system for solid-liquid impurities and straw soil fermentation, and the spray system is connected to the soil system, and the spray end of the spray system is located above the soil system;

[0016] The soilification system is connected to a straw crushing system for straw crushing and feeding;

[0017] The second solid-liquid separation system is connected to a biological filter for filtering filtrate, and the second solid-liquid separation system is connected to the soil system.

[0018] Furthermore, the detection and diversion system detects COD and ammonia nitrogen content, and the detection and diversion system is connected to a networked farmland soil monitoring instrument.

[0019] Furthermore, the soilification system includes a mixing component, a fermentation and filtration component, and a mobile screed component, the mobile screed component is connected to the support and filtration component, and the mixing component is located at the middle end directly above the fermentation and filtration component;

[0020] Furthermore, the fermentation filtration component includes an auger, filter holes, an inclined plate, a first motor, a discharge pipe, a control valve, a U-shaped plate and a box body. Inclined plates are fixedly connected to the front and rear inner walls of the box body, U-shaped plates are fixedly connected between the inclined plates, and filter holes are provided in a rectangular array of the inclined plates and the U-shaped plates. A discharge pipe is fixedly connected to the left end of the box body, and a control valve is installed on the discharge pipe. The right end of the box body is fixedly connected to the first motor, and the driving end of the first motor is fixedly connected to the auger. The outer wall of the auger is slidably connected to the inner wall of the U-shaped plate. The mixing component is located at the middle end directly above the box body, and a movable leveling component is connected to the box body.

[0021] Furthermore, the mixing assembly includes a mixing tank, a straw feed pipe, a breathing valve, a stirring structure and a solid impurity feed pipe, the top of the mixing tank is connected with the straw feed pipe, the breathing valve and the solid impurity feed pipe, the mixing tank is equipped with a stirring structure for stirring, and the mixing tank is located at the middle end just above the box body;

[0022] The straw feeding pipe is connected to the output end of the straw crushing system, and the solid impurity feeding pipe is fixedly connected to the output ends of the second solid-liquid separation system and the first solid-liquid separation system.

[0023] Furthermore, the mobile smoothing assembly includes a second motor, a rack, a scraping plate, a gear ring, a cross plate, rollers, a roller mounting frame and slide rails. The slide rails are symmetrically fixedly connected to the front and rear top of the box body, the roller mounting frame is symmetrically fixedly connected to the bottom, the rollers are rollingly connected to the slide rails, the top of the roller mounting frame is fixedly connected to the cross plate, the top of the cross plate is equipped with a second motor, the driving end of the second motor is fixedly connected to the gear ring, the gear ring is meshingly connected to the rack, and the rack is solid-liquid installed on the front and rear side walls of the box body, the scraping plate is fixedly connected between the cross plates, the scraping plate is located in the box body, and the mobile smoothing assembly is connected to the spray system.

[0024] Furthermore, the spray system includes a two-way liquid inlet component and a mobile liquid spray component, the two-way liquid inlet component is connected to the sewage extraction system and the box, the two-way liquid inlet component is connected to the mobile liquid spray component, and the mobile liquid spray component is connected to the soil system.

[0025] Furthermore, the two-way liquid inlet component includes a first pipeline, a three-way valve, a liquid pump and a third pipeline. The liquid inlet end of the three-way valve is respectively connected to the first pipeline and the third pipeline, the liquid outlet end of the three-way valve is fixedly connected to the input end of the liquid pump, and the output end of the liquid pump is connected to the mobile liquid spray component.

[0026] Furthermore, the mobile liquid spraying assembly includes a second pipeline, a connecting plate, a drag chain, a drag chain bracket, a mounting ring and a nozzle. The drag chain bracket is solid-liquid installed on the side wall of the box. The solid-liquid end of the drag chain is fixedly connected to the end of the box near the liquid pump. The drag chain is movably connected to the drag chain bracket. The movable end of the drag chain is fixedly connected to the connecting plate. The drag chain is movably connected to the second pipeline. The two ends of the second pipeline are respectively fixedly connected to the output end of the drag chain and the nozzle. The nozzle is fixedly connected with the mounting ring at equal intervals, and the nozzle is fixedly connected to the side wall of the scraper plate.

[0027] Furthermore, the connecting plate is fixedly connected to the side wall of the transverse plate.

[0028] The present invention has the following technical effects:

[0029] The second solid-liquid separation system of the present invention performs solid-liquid separation on the grey water, and the filtrate from the second solid-liquid separation system enters the biofilter for filtration, and the filtered water is used as reclaimed water, and the solid impurities from the second solid-liquid separation system enter the soilification system; at the same time, the sewage extraction system extracts the filtrate in the septic tank and enters the anaerobic treatment system for anaerobic treatment, and the detection and diversion system detects the water treated by the anaerobic treatment system, and directly discharges it to the artificial wetland / farmland after the detection meets the standard. If the detection does not meet the standard, the aerobic treatment system performs aerobic treatment, and then discharges it to the artificial wetland / farmland, processes and adjusts according to the real-time data and the feedback data of the farmland soil monitoring instrument, and performs aerobic treatment according to the needs, effectively reducing the energy consumption of aerobic treatment;

[0030] The sludge extraction system pumps the sludge in the septic tank into the first solid-liquid separation system, the first solid-liquid separation system performs solid-liquid separation on the sludge, the filtrate separated by the first solid-liquid separation system enters the anaerobic treatment system for further treatment, the solid and liquid impurities separated by the first solid-liquid separation system enter the soilification system, the straw crushing system sends the crushed straw to the soilification system, the soilification system fully mixes the solid impurities and straw, and evenly spreads the mixed material on the fermented raw mud containing a large number of microorganisms reserved in the soilification system, and the spraying system sprays the soilification system with The fermentation liquid containing a large number of microorganisms is circulated and pumped and evenly sprayed on the mixed materials. The microorganisms of the fermentation mud and the fermentation liquid fully contact the mixed materials for moisturizing fermentation. When water replenishment is needed, the spraying system extracts the filtrate in the sewage extraction system and sprays it evenly on the materials in the soilization system to moisturize and ferment the materials in the soilization system. The soilization system collects the sprayed liquid into fermentation liquid. After the fermentation is completed, the soilization system returns five-sixths of the fermented soil to the field, reducing the use of nitrogen and phosphorus fertilizers in farmland and realizing resource utilization.

[0031] The remaining one-sixth of the fermented soil in the soilization system is reused as fermentation mud, which helps to maximize the utilization of solid impurities in black water and gray water. The straw provides a fluffy environment, which helps gas circulation and fermentation. At the same time, the straw can be reused to solve the problem of troublesome straw disposal in rural areas. In addition, the fermentation liquid and fermentation mud can be recycled without the need to supplement additional microorganisms. The spray system and soilization system can cooperate to achieve self-reproduction and self-use of microorganisms, which is beneficial to practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A process flow chart of a rural sewage resource utilization system of the present invention;

[0034] Figure 2 The soil system of the present invention is three-dimensional Figure 1 ;

[0035] Figure 3 It is a front view of the soilification system of the present invention;

[0036] Figure 4 The soil system of the present invention is three-dimensional Figure 2 ;

[0037] Figure 5 The soil system of the present invention is three-dimensional Figure 3 ;

[0038] Figure 6 The soil system of the present invention is three-dimensional Figure 4 ;

[0039] Figure 7 For along Figure 3 AA direction cross-sectional view;

[0040] Figure 8 Schematic diagram of the second motor and its connection structure.

[0041] The numbers in the figure represent:

[0042] 1. Septic tank 2. Sewage extraction system 3. Anaerobic treatment system 4. Detection and diversion system 5. Aerobic treatment system 6. Second solid-liquid separation system 7. Spray system 71. First pipeline 72. Three-way valve 73. Liquid pump 74. Second pipeline 75. Connecting plate 76. Drag chain 77. Drag chain bracket 78. Mounting ring 79. Spray pipe 710. Third pipeline 8. Bottom mud extraction system 9. Soilization system 91. Mixing tank 92. Straw feed pipe 93. Exhalation Suction valve 94. stirring structure 95. solid impurity feed pipe 96. auger 97. filter hole 98. inclined plate 99. first motor 910. discharge pipe 911. control valve 912. second motor 913. rack 914. scraper plate 915. gear ring 916. cross plate 917. U-shaped plate 918. roller 919. roller mounting frame 920. slide rail 921. box body 10. straw crushing system 11. first solid-liquid separation system 12. biological filter tank. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The present invention will be further described below in conjunction with the embodiments.

[0045] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0046] Example 1

[0047] Please refer to the instruction manual Figure 1A rural sewage resource utilization system includes a septic tank 1 for storing black water of rural sewage and a second solid-liquid separation system 6 for solid-liquid separation of gray water of rural sewage:

[0048] The septic tank 1 is connected to a sewage extraction system 2 for sewage extraction and a sludge extraction system 8 for sludge extraction;

[0049] The sewage extraction system 2 is connected to a spray system 7 for fermentation spraying and an anaerobic treatment system 3 for anaerobic treatment;

[0050] The anaerobic treatment system 3 is connected to a detection and diversion system 4 for liquid detection;

[0051] The detection and diversion system 4 is connected to an aerobic treatment system 5 and an artificial wetland / farmland for aerobic reaction, and the aerobic treatment system 5 is connected to the artificial wetland / farmland;

[0052] The sediment extraction system 8 is connected to a first solid-liquid separation system 11 for solid-liquid separation of the sediment, and the first solid-liquid separation system 11 is connected to the anaerobic treatment system 3 through a pipeline;

[0053] The aerobic treatment system 5 and the anaerobic treatment system 3 are both connected to the first solid-liquid separation system 11;

[0054] The aerobic treatment system 5 and the anaerobic treatment system 3 extract the sludge into the first solid-liquid separation system 11 through gas equipment;

[0055] The first solid-liquid separation system 11 is connected to a soil system 9 for fermenting solid-liquid impurities and straw soil, and the spray system 7 is connected to the soil system 9, and the spray end of the spray system 7 is located above the soil system 9;

[0056] The soilification system 9 is connected to a straw crushing system 10 for straw crushing and feeding;

[0057] The second solid-liquid separation system 6 is connected to a biological filter 12 for filtering the filtrate, and the second solid-liquid separation system 6 is connected to the soil system 9;

[0058] The second solid-liquid separation system 6 performs solid-liquid separation on the grey water, and the filtrate from the second solid-liquid separation system 6 enters the biofilter for filtration, and the filtered water is used as reclaimed water, and the solid impurities from the second solid-liquid separation system 6 enter the soilification system 9; at the same time, the sewage extraction system 2 extracts the filtrate in the septic tank 1 and enters the anaerobic treatment system 3 for anaerobic treatment, and the detection and diversion system 4 detects the water treated by the anaerobic treatment system 3. If the detection meets the standard, it is directly discharged to the artificial wetland / farmland. If the detection does not meet the standard, the aerobic treatment system 5 performs aerobic treatment and then discharges it to the artificial wetland / farmland, and processes and adjusts according to the real-time data and the feedback data of the farmland soil monitoring instrument, and performs aerobic treatment as needed, effectively reducing the energy consumption of aerobic treatment. At the same time, the nitrogen and phosphorus in the sewage provide resource utilization for farmland, reducing the use of nitrogen fertilizer and phosphorus fertilizer; the sludge extraction system 8 draws the sludge in the septic tank 1 into the first solid-liquid separation system 11, and the first solid-liquid separation system 11 performs solid-liquid separation on the sludge. The filtrate separated by 11 enters the anaerobic treatment system 3 for further treatment, the solid and liquid impurities separated by the first solid-liquid separation system 11 enter the soilization system 9, the straw crushing system 10 sends the crushed straw to the soilization system 9, the soilization system 9 fully mixes the solid impurities and the straw, and evenly lays the mixed material on the fermentation sludge containing a large number of microorganisms reserved in the soilization system 9, the spraying system 7 circulates and pumps the fermentation stock solution containing a large number of microorganisms in the soilization system 9 and evenly sprays it on the mixed material, the microorganisms of the fermentation sludge and the fermentation stock solution fully contact the mixed material for moisturizing fermentation treatment, when water replenishment is needed, the spraying system 7 extracts the filtrate in the sewage extraction system 2 and evenly sprays it on the material in the soilization system 9, and the material in the soilization system 9 is moisturized and fermented, the soilization system 9 collects the sprayed liquid into fermentation stock solution, and after the fermentation is completed, the soilization system 9 returns five-sixths of the fermentation material soil to the field, reducing the use of nitrogen fertilizer and phosphorus fertilizer in farmland and realizing resource utilization;

[0059] The remaining one-sixth of the fermented soil in the soil system 9 is used as fermentation mud for secondary utilization, which helps to maximize the utilization of solid impurities in black water and gray water. The straw provides a fluffy environment, which helps gas circulation and fermentation. At the same time, the straw can be reused to solve the problem of troublesome straw disposal in rural areas. In addition, the fermentation liquid and fermentation mud can be recycled without the need to supplement additional microorganisms. The spray system 7 and the soil system 9 can cooperate to achieve self-reproduction and self-use of microorganisms, which is beneficial to practical use.

[0060] The detection and diversion system 4 detects COD and ammonia nitrogen content, and the detection and diversion system 4 is connected to the networked farmland soil monitoring instrument. The soil system 9 includes a mixing component, a fermentation and filtration component, and a mobile leveling component. The support and filtration component is connected to a mobile leveling component, and the mixing component is located at the middle end just above the fermentation and filtration component;

[0061] Please refer to the instruction manual Figure 2-8 , the fermentation and filtering assembly includes an auger 96, a filter hole 97, an inclined plate 98, a first motor 99, a discharge pipe 910, a control valve 911, a U-shaped plate 917 and a box body 921. The inner wall of the box body 921 is fixedly connected with inclined plates 98 at the front and rear, and a U-shaped plate 917 is fixedly connected between the inclined plates 98. The inclined plates 98 and the U-shaped plates 917 are provided with filter holes 97 in a rectangular array. The left end of the box body 921 is fixedly connected with a discharge pipe 910, and a control valve 911 is installed on the discharge pipe 910. The right end of the box body 921 is fixedly connected with a first motor 99, and the driving end of the first motor 99 is fixedly connected with an auger 96. The outer wall of the auger 96 is slidably connected to the inner wall of the U-shaped plate 917. The mixing assembly is located at the middle end just above the box body 921, and the movable leveling assembly is connected to the box body 921;

[0062] The mixing assembly includes a mixing tank 91, a straw feed pipe 92, a breathing valve 93, a stirring structure 94 and a solid impurity feed pipe 95. The top of the mixing tank 91 is connected with the straw feed pipe 92, the breathing valve 93 and the solid impurity feed pipe 95. The mixing tank 91 is equipped with a stirring structure 94 for stirring. The mixing tank 91 is located at the middle end just above the box 921.

[0063] The straw feed pipe 92 is connected to the output end of the straw crushing system 10, and the solid impurity feed pipe 95 is fixedly connected to the output ends of the second solid-liquid separation system 6 and the first solid-liquid separation system 11;

[0064] A level meter for detecting the height of the material in the mixing tank 91 is installed on the side wall of the mixing tank 91;

[0065] A control valve is installed at the discharge end of the mixing tank 91;

[0066] The mobile smoothing assembly includes a second motor 912, a rack 913, a scraping plate 914, a gear ring 915, a cross plate 916, a roller 918, a roller mounting frame 919 and a slide rail 920. The slide rail 920 is symmetrically fixedly connected to the top of the box 921, and the roller mounting frame 919 is symmetrically fixedly connected to the bottom. The roller 918 is rollingly connected to the slide rail 920. The top of the roller mounting frame 919 is fixedly connected to the cross plate 916, and the second motor 912 is installed on the top of the cross plate 916. The driving end of the second motor 912 is fixedly connected to the gear ring 915, and the gear ring 915 is meshingly connected to the rack 913, and the rack 913 is solid-liquid installed on the front and rear side walls of the box 921. The scraping plate 914 is fixedly connected between the cross plates 916, and the scraping plate 914 is located in the box 921. The mobile smoothing assembly is connected to the spray system 7.

[0067] The second solid-liquid separation system 6 and the first solid-liquid separation system 11 add solid impurities into the mixing tank 91 through the solid impurity feed pipe 95 of the mixing assembly of the soilification system 9, the straw crushing system 10 adds the crushed straw into the mixing tank 91 through the straw feed pipe 92, the stirring structure 94 stirs and mixes the solid impurities and the crushed straw, and the breathing valve 93 balances the air pressure in the mixing tank 91;

[0068] After the mixing is completed, the mixing tank 91 adds the mixed material into the box 921 of the fermentation and filtration component, the second motor 912 of the mobile smoothing component drives the gear ring 915 to rotate along the rack 913, the second motor 912 drives the horizontal plate 916 to move, the horizontal plate 916 drives the roller mounting frame 919 to move, the roller mounting frame 919 drives the roller 918 to rotate along the slide rail 920, the roller mounting frame 919 drives the scraping plate 914, the scraping plate 914 smoothes the mixed material in the box 921, the horizontal plate 916 drives the spraying system 7 to move, the spraying system 7 circulates and pumps the fermentation stock solution containing a large number of microorganisms in the box 921 and evenly sprays it on the mixed material, the fermentation mud and the microorganisms of the fermentation stock solution reserved in the box 921 fully contact the mixed material for moisturizing fermentation treatment, and the spraying system 7 is used for water replenishment when water is needed. The filtrate extracted from the sewage extraction system 2 by system 7 is evenly sprayed on the material in the box 921 to moisturize and ferment the material in the box 921. The filter holes 97 opened in the inclined plate 98 and the U-shaped plate 917 filter and collect the sprayed liquid, and the filtered and collected liquid is fermented. After the fermentation is completed, the control valve 911 is opened, and the first motor 99 drives the auger 96 to rotate. The auger 96 drives five-sixths of the fermented soil in the box 921 to be discharged from the discharge pipe 910 to return the soil to the field. The inclined inclined plate 98 helps the fermented soil to slide into the U-shaped plate 917. The remaining one-sixth of the fermented soil in the box 921 is used as fermentation raw mud for secondary utilization, which helps to maximize the utilization of solid impurities in black water and gray water. At the same time, the straw can be reused to solve the problem of straw disposal in rural areas.

[0069] Please refer to the instruction manual Figure 2-8 The spray system 7 includes a two-way liquid inlet component and a mobile liquid spray component, the two-way liquid inlet component is connected to the sewage extraction system 2 and the box 921, the two-way liquid inlet component is connected to the mobile liquid spray component, and the mobile liquid spray component is connected to the soil system 9;

[0070] The two-way liquid inlet assembly includes a first pipeline 71, a three-way valve 72, a liquid pump 73 and a third pipeline 710. The liquid inlet end of the three-way valve 72 is connected to the first pipeline 71 and the third pipeline 710 respectively, the liquid outlet end of the three-way valve 72 is fixedly connected to the input end of the liquid pump 73, and the output end of the liquid pump 73 is connected to the mobile liquid spray assembly;

[0071] The mobile liquid spraying assembly includes a second pipeline 74, a connecting plate 75, a drag chain 76, a drag chain bracket 77, a mounting ring 78 and a nozzle 79. The drag chain bracket 77 is solid-liquid mounted on the side wall of the box body 921. The solid-liquid end of the drag chain 76 is fixedly connected to the end of the box body 921 close to the liquid pump 73. The drag chain 76 is movably connected to the drag chain bracket 77. The movable end of the drag chain 76 is fixedly connected to the connecting plate 75. The drag chain 76 is movably connected to the second pipeline 74. The two ends of the second pipeline 74 are respectively fixedly connected to the output end of the drag chain 76 and the nozzle 79. The nozzle 79 is fixedly connected to the mounting ring 78 at equal intervals. The nozzle 79 is fixedly connected to the side wall of the scraper plate 914.

[0072] The cables to which the second motor 912 is connected are located within 76 .

[0073] The connecting plate 75 is fixedly connected to the side wall of the horizontal plate 916;

[0074] The nozzle hole of the nozzle 79 is arranged downward;

[0075] The three-way valve 72 of the two-way liquid inlet group of the spray system 7 is opened toward the third pipe 710, and the liquid pump 73 pumps the fermentation liquid containing a large number of microorganisms in the box 921 into the second pipe 74 of the mobile spray assembly through the third pipe 710 and the liquid pump 73, and then sprays it out from the nozzle 79. At the same time, the horizontal plate 916 drives the connecting plate 75 to move, the connecting plate 75 drives the drag chain 76 to move, the scraper plate 914 drives the mounting ring 78 to move, and the mounting ring 78 drives the nozzle 79 to move and spray liquid. The spray system 7 is circulated and pumped evenly on the mixed material in the box 921, and the microorganisms of the fermentation mud and the fermentation liquid are mixed. The materials are fully contacted for moisturizing fermentation treatment. When water replenishment is needed, the three-way valve 72 is opened toward the first pipe 71, and the liquid pump 73 pumps the filtrate in the sewage extraction system 2 into the second pipe 74 of the mobile spray assembly through the third pipe 710 and the three-way valve 72, and then sprays it out from the nozzle 79. At the same time, the cross plate 916 drives the connecting plate 75 to move, the connecting plate 75 drives the drag chain 76 to move, the scraper plate 914 drives the mounting ring 78 to move, and the mounting ring 78 drives the nozzle 79 to move and spray liquid, and the liquid is evenly sprayed on the material in the box 921, so as to moisturize and ferment the material in the box 921, and facilitate rapid water replenishment.

[0076] The fermentation liquid and fermentation mud can be recycled without the need to supplement additional microorganisms. The spray system 7 and the soil system 9 can cooperate to achieve self-reproduction and self-use of microorganisms, which is beneficial to practical use.

[0077] A solar energy system is installed at the treatment station where the rural sewage resource utilization system of the present application is installed to supplement electric energy.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rural sewage resource utilization system, comprising a septic tank (1) for storing black water of rural sewage and a second solid-liquid separation system (6) for solid-liquid separation of grey water of rural sewage, characterized in that: The septic tank (1) is connected to a sewage extraction system (2) for extracting sewage and a sludge extraction system (8) for extracting sludge; The sewage extraction system (2) is connected to a spray system (7) for fermentation spraying and an anaerobic treatment system (3) for anaerobic treatment; The anaerobic treatment system (3) is connected to a detection diversion system (4) for liquid detection; The detection and diversion system (4) is connected to an aerobic treatment system (5) for aerobic reaction and an artificial wetland / farmland, and the aerobic treatment system (5) is connected to the artificial wetland / farmland; the bottom mud extraction system (8) is connected to a first solid-liquid separation system (11) for solid-liquid separation of the bottom mud, and the first solid-liquid separation system (11) is connected to the anaerobic treatment system (3) through a pipeline; The aerobic treatment system (5) and the anaerobic treatment system (3) are both connected to the first solid-liquid separation system (11); The first solid-liquid separation system (11) is connected to a soilification system (9) for fermenting solid-liquid impurities and straw soil, and the spraying system (7) is connected to the soilification system (9), and the spraying end of the spraying system (7) is located above the soilification system (9); The soilification system (9) is connected to a straw crushing system (10) for crushing and feeding the straw; The second solid-liquid separation system (6) is connected to a biological filter (12) for filtering filtrate, and the second solid-liquid separation system (6) is connected to the soilification system (9); The detection and diversion system (4) detects the water treated by the anaerobic treatment system (3). If the water meets the detection standard, it is directly discharged to the artificial wetland / farmland. If the water does not meet the detection standard, the aerobic treatment system (5) performs aerobic treatment and then discharges it to the artificial wetland / farmland. The water is processed and adjusted according to the real-time data and the feedback data of the farmland soil monitoring instrument, and aerobic treatment is performed as needed.

2. The rural sewage resource utilization system according to claim 1 is characterized in that: The detection and diversion system (4) detects COD and ammonia nitrogen content, and the detection and diversion system (4) is connected to a networked farmland soil monitoring instrument.

3. The rural sewage resource utilization system according to claim 2 is characterized in that: The soilification system (9) comprises a mixing component, a fermentation and filtration component and a mobile leveling component. The fermentation and filtration component is connected to the mobile leveling component, and the mixing component is located at the middle end directly above the fermentation and filtration component.

4. The rural sewage resource utilization system according to claim 3 is characterized in that: The fermentation filtration component comprises an auger (96), filter holes (97), an inclined plate (98), a first motor (99), a discharge pipe (910), a control valve (911), a U-shaped plate (917) and a box body (921). The inner wall of the box body (921) is fixedly connected with the inclined plates (98) at the front and rear, and the U-shaped plates (917) are fixedly connected between the inclined plates (98). The inclined plates (98) and the U-shaped plates (917) are provided with filter holes (97) in a rectangular array. The box body ( The left end of the box (921) is fixedly connected to a discharge pipe (910), and a control valve (911) is installed on the discharge pipe (910). The right end of the box (921) is fixedly connected to a first motor (99), and the driving end of the first motor (99) is fixedly connected to an auger (96). The outer wall of the auger (96) is slidably connected to the inner wall of the U-shaped plate (917). The mixing component is located at the middle end directly above the box (921), and the movable smoothing component is connected to the box (921).

5. The rural sewage resource utilization system according to claim 4 is characterized in that: The mixing assembly comprises a mixing tank (91), a straw feeding pipe (92), a breathing valve (93), a stirring structure (94) and a solid impurity feeding pipe (95); the top of the mixing tank (91) is connected to the straw feeding pipe (92), the breathing valve (93) and the solid impurity feeding pipe (95); the mixing tank (91) is equipped with a stirring structure (94) for stirring; and the mixing tank (91) is located at the middle end directly above the box body (921); The straw feed pipe (92) is connected to the output end of the straw crushing system (10), and the solid impurity feed pipe (95) is fixedly connected to the output ends of the second solid-liquid separation system (6) and the first solid-liquid separation system (11).

6. The rural sewage resource utilization system according to claim 5 is characterized in that: The mobile smoothing assembly comprises a second motor (912), a rack (913), a scraping plate (914), a gear ring (915), a cross plate (916), a roller (918), a roller mounting frame (919) and a slide rail (920). The top of the box body (921) is symmetrically fixedly connected to the slide rail (920) in the front and rear directions. The bottom of the roller mounting frame (919) is symmetrically fixedly connected to the roller (918). The roller (918) is rollingly connected to the slide rail (920). The top of the roller mounting frame (919) is fixedly connected to the slide rail (920). A horizontal plate (916) is fixedly connected, a second motor (912) is installed on the top of the horizontal plate (916), a gear ring (915) is fixedly connected to the driving end of the second motor (912), the gear ring (915) is meshingly connected to a rack (913), and the rack (913) is solidly and liquid-mounted on the front and rear side walls of the box body (921), a scraping plate (914) is fixedly connected between the horizontal plates (916), and the scraping plate (914) is located in the box body (921), and the mobile leveling assembly is connected to the spray system (7).

7. The rural sewage resource utilization system according to claim 6 is characterized in that: The spray system (7) comprises a two-way liquid inlet component and a mobile liquid spray component, the two-way liquid inlet component is connected to the sewage extraction system (2) and the box (921), the two-way liquid inlet component is connected to the mobile liquid spray component, and the mobile liquid spray component is connected to the soilification system (9).

8. The rural sewage resource utilization system according to claim 7 is characterized in that: The two-way liquid inlet component comprises a first pipeline (71), a three-way valve (72), a liquid pump (73) and a third pipeline (710); the liquid inlet end of the three-way valve (72) is connected to the first pipeline (71) and the third pipeline (710) respectively; the liquid outlet end of the three-way valve (72) is fixedly connected to the input end of the liquid pump (73); and the output end of the liquid pump (73) is connected to the mobile liquid spraying component.

9. The rural sewage resource utilization system according to claim 8 is characterized in that: The mobile liquid spraying assembly comprises a second pipeline (74), a connecting plate (75), a drag chain (76), a drag chain bracket (77), a mounting ring (78) and a nozzle (79); the drag chain bracket (77) is solid-liquid mounted on the side wall of the box body (921); the solid-liquid end of the drag chain (76) is fixedly connected to the end of the box body (921) close to the liquid pump (73); the drag chain (76) is movably connected to the drag chain bracket (77); the movable end of the drag chain (76) is fixedly connected to the connecting plate (75); the drag chain (76) is movably connected to the second pipeline (74); the two ends of the second pipeline (74) are respectively fixedly connected to the output end of the drag chain (76) and the nozzle (79); the nozzle (79) is fixedly connected to the mounting ring (78) at equal intervals; and the nozzle (79) is fixedly connected to the side wall of the scraper plate (914).

10. The rural sewage resource utilization system according to claim 9, characterized in that: The connecting plate (75) is fixedly connected to the side wall of the transverse plate (916).

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