Feces and urine sewage collection and treatment system

Abstract

The utility model provides an excrement and urine sewage collection and treatment system. The excrement and urine sewage collection and treatment system comprises a closestool, a separation pipeline, a vacuum device and a fermentation device, a bottom outlet of the closestool is connected with a defecation pipe and a drainage pipe through a tee joint, the defecation pipe is connected into a vacuum device, and the drainage pipe is connected into a rainwater pipeline. The inner wall of a urinal of the closestool is coated with a non-stick coating, the flushing unit and the lubricating unit are installed on the closestool, the lubricating unit sprays lubricating liquid to the inner wall of the closestool, and excrement and urine can be completely sucked into the vacuum device under the non-flushing condition; the flushing unit flushes the inner wall of the closestool and discharges water into the drainage pipe, flushing water cannot enter a vacuum fermentation system formed by the vacuum device and the fermentation device, and smooth fermentation of dry matter content is guaranteed. The utility model provides an excrement and urine sewage collection and treatment system which can reduce urban sewage treatment capacity and difficulty, guarantee continuous and effective fermentation of excrement and urine and enable nutrient components of the excrement and urine to be fully and reasonably utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a feces and urine sewage collection and treatment system. Background Art

[0002] Domestic sewage mainly includes two categories. The first category is human feces and urine sewage (usually called black water), and the second category is sewage generated by people taking a bath, washing dishes, washing vegetables, and doing laundry (usually called gray water). The first category of sewage, human feces and urine, often contains a large number of bacteria, viruses and organic nutrients. Improper treatment will cause serious harm to the ecological environment and human health, as well as eutrophication of river water quality. The second category of sewage is easier to treat, so 90% of our water treatment work is aimed at the first category of sewage. How to treat the first category of sewage in a targeted manner is a major problem.

[0003] The squat toilets and toilets we commonly use usually use a large amount of water to flush the toilet, and discharge the mixed excrement into the septic tank or sewage treatment plant through the sewage pipe. This flushing and sewage discharge method consumes a lot of water. Sewage treatment plants usually use high-temperature disinfection and discharge treatment methods, and the above treatment methods will use a large amount of chemical disinfectants and fungicides, causing serious secondary pollution to the land and groundwater.

[0004] Human feces and urine contain the most environmentally friendly and abundant nutrients for plant growth. If the nutrients in human feces and urine can be rationally utilized, they can provide rich nutrients for the soil for crop growth and be converted into substances needed for human life, which will repeat over and over again. In order to effectively utilize the nutrients in human feces and urine, the existing plan proposes to directly connect the sewage pipes of squat toilets and toilets to the biogas pool to ferment the mixture of flushing water and feces and urine.

[0005] However, it is found in the application that the concentration of feces and urine plays a decisive role in the effect of anaerobic digestion. The water content is high and the concentration is low, and the organic matter content per unit volume is relatively reduced, which will cause insufficient nutrition for bacteria and reduce gas production, leading to bacterial starvation and fermentation cessation. Every year, a person produces about 500kg of urine and 50kg of feces. 70%-80% of human feces is water, and 95% of human urine is water. The dry matter of human feces and urine accounts for about 4% of the total mass of feces and urine. Studies have shown that the limit value requirement of dry matter content of feces and urine for continuous fermentation is greater than 3%, which can ensure the continuous fermentation of biogas. If water is used to flush the toilet, an ordinary toilet consumes about 6 liters of water per flush, and a vacuum toilet consumes about 0.6 liters of water per flush. Even if a vacuum toilet with low water consumption is used, the flushing water entering the pool will make the dry matter content of feces and urine in the biogas pool less than the limit of 3%, resulting in the failure of smooth fermentation of feces and urine.

[0006] Based on the above problems, in order to ensure the continuous and effective fermentation of feces and urine and make full use of the effective ingredients in human feces and urine, a feces and urine sewage collection and treatment system and a resource utilization method are proposed. Utility Model Content

[0007] The utility model provides a feces and urine sewage collection and treatment system, which can reduce the sewage treatment volume and difficulty in urban and rural areas, ensure the continuous and effective fermentation of feces and urine, and make full and reasonable use of feces and urine nutrient components.

[0008] In order to achieve the above technical objectives and the above technical effects, the utility model solves the above problems through the following technical solutions:

[0009] A feces and urine sewage collection and treatment system, comprising a toilet, a separation pipeline, a vacuum device and a fermentation device connected in sequence; the separation pipeline comprises a tee connected to the bottom outlet of the toilet, the other two ways of the tee are respectively connected to a feces discharge pipe and a drainage pipe, and are controlled to be on and off by corresponding feces discharge valves and drainage valves, and the feces discharge valve and the drainage valve cannot be opened at the same time; the feces discharge pipe is connected to the vacuum device, and the drainage pipe is connected to the rainwater pipe;

[0010] The vacuum device comprises a vacuum pipe, a vacuum tank and a vacuum generating device. The feces discharge pipe is connected to the top of the vacuum tank through the vacuum pipe. The vacuum generating device makes the vacuum tank form a vacuum negative pressure state. The bottom of the vacuum tank is connected to the biogas tank of the fermentation device through a sewage pump. The biogas tank is equipped with a stirring device.

[0011] The inner wall of the toilet bowl is coated with a non-stick coating, and a flushing unit and a lubrication unit are installed on the toilet. The lubrication unit sprays lubricating liquid on the inner wall of the toilet, and the flushing unit flushes the inner wall of the toilet, and the flushing water is discharged into the rainwater pipe through the drain pipe; the feces valve, drain valve, vacuum generating device, stirring device, sewage pump, flushing unit, and lubrication unit are connected to the control module.

[0012] In the above scheme, the feces and urine can be separated from the flushing water by the three-way separation pipeline. The feces and urine are sucked into the vacuum tank through the feces discharge valve, and then transported to the fermentation device by the sewage pump for fermentation. The inner wall of the toilet bowl is coated with a non-stick coating and sprayed with lubricating liquid. The non-stick coating on the inner wall of the toilet, the lubricating liquid and the negative pressure of the vacuum device can ensure that the feces and urine are completely sucked into the vacuum device without flushing, forming a waterless vacuum toilet mode. This collection process does not require water, can be adapted to applications in areas with severe water shortages, and complies with the principle of water conservation.

[0013] At the same time, the flushing water is not mixed into the feces and urine, and the amount of lubricating fluid used is very small, which has little effect on the dry matter concentration, can meet the feces and urine concentration for anaerobic digestion effect, make the dry matter content of human feces and urine in the biogas tank greater than 3%, ensure smooth biogas fermentation, and make full use of the fermented organic fertilizer. After the toilet has been used for a period of time, the flushing unit can be started to clean the toilet, and the flushing water is discharged into the rainwater pipe through the drain valve and drain pipe of the separation pipeline. The flushing water will not enter the vacuum fermentation system composed of the vacuum device and the fermentation device, which does not violate the principle of waterless vacuum fermentation, and ensures that the dry matter of feces and urine meets the fermentation requirements.

[0014] Furthermore, the lubrication unit includes a lubrication liquid tank, which is connected to a nozzle on the inner wall of the toilet via a pipeline, and a lubrication liquid pump and a lubrication liquid control valve are installed on the pipeline.

[0015] Furthermore, the flushing unit includes a water tank, which is connected to a water outlet arranged on the inner wall of the toilet through a pipeline. A flushing pump and a flushing valve are installed on the pipeline to control toilet flushing. When the flushing valve is opened, the drain valve is opened and the feces valve is closed.

[0016] Furthermore, the fermentation device includes at least two biogas tanks arranged in parallel for use alternately, a biogas tank liquid level sensor is arranged in the biogas tank, a discharge port is arranged on the side wall of the tank body, a pressure reducing exhaust pipeline is arranged on the top, and a pressure reducing valve is arranged on the pressure reducing exhaust pipeline to control exhaust. The pressure reducing valve is used to ensure that the pressure in the biogas tank does not exceed a certain limit value; the biogas tank liquid level sensor measures the liquid level, and when the biogas tank liquid level reaches a certain value, that is, when the biogas tank is almost full, another biogas tank is replaced.

[0017] Furthermore, the vacuum tank is equipped with a microwave generator to intermittently sterilize the inside of the tank body; a vacuum tank liquid level sensor is installed in the vacuum tank to measure the feces and urine volume, and a vacuum pressure sensor is installed to measure the vacuum pressure; the microwave generator, vacuum tank liquid level sensor and vacuum pressure sensor are connected to the control module.

[0018] Furthermore, the stirring device includes a motor installed on the top of the biogas tank, and the output end of the motor extends into the biogas tank and is connected to a stirring fan blade; a heating coil is arranged at the bottom of the biogas tank to heat the liquid in the tank.

[0019] Furthermore, the toilet is provided with a feces extraction button, a flushing button and a lubrication button to respectively control the start and stop of the feces discharge valve, the flushing unit and the lubrication unit; the toilet is provided with a seat pressure sensor, the seat pressure sensor is pressurized to start the lubrication unit, and the seat pressure sensor pressure is released to open the feces discharge valve, and feces and urine are sucked into the vacuum tank due to the negative pressure.

[0020] Furthermore, the non-stick coating on the inner wall of the toilet is made of polyvinyl fluoride material, and the lubricating liquid used in the lubricating unit is a biodegradable organic lubricating liquid.

[0021] The advantages and effects of the utility model are:

[0022] 1. The feces and urine sewage collection and treatment system proposed in the utility model can separate feces and urine from flushing water at the source, carry out targeted treatment and reuse of feces and urine, and reduce the amount and difficulty of sewage treatment. Feces and urine are completely sucked into the vacuum device through the feces discharge valve, and then transported to the fermentation device for fermentation by the sewage pump. The inner wall of the toilet bowl is coated with a non-stick coating and sprayed with lubricating liquid, which can ensure that feces and urine are completely sucked into the vacuum device without flushing, with high collection efficiency and the pipeline is not easy to be blocked. The collection process does not require water, meets the requirements of waterless vacuum fermentation, can effectively save water resources, and can also be used in areas with water scarcity.

[0023] The flushing water of the flushing unit is discharged into the rainwater pipe through the drain valve and drain pipe of the separation pipeline, and the flushing water will not enter the vacuum fermentation system composed of the vacuum device and the fermentation device. The feces and urine in the biogas tank are not mixed with the flushing water, which can ensure that the dry matter content in the biogas tank is greater than 3% and fermented smoothly.

[0024] The use of this system can prevent feces and urine from entering rivers and groundwater at the source, fully collect and utilize the useful substances in feces and urine, ferment human feces and urine to add organic fertilizer to farmland, and serve the construction of high-standard farmland.

[0025] 2. The utility model sets a microwave generator in the vacuum tank, which can intermittently sterilize feces and urine in the tank and kill some pathogens. A stirring device is set in the biogas tank. Stirring can make the fermentation raw materials evenly distributed and the temperature in the tank even, increase the contact between microorganisms and raw materials, and improve the fermentation efficiency. Temperature is an important external condition for anaerobic digestion. Setting a heating coil in the biogas tank can heat the biogas tank, increase the digestion temperature, shorten the anaerobic digestion cycle, and improve the fermentation efficiency. The above-mentioned device can better realize the fermentation and reuse of feces and urine, and the fermentation process is sufficient to kill all pathogens.

[0026] 3. The whole system of the utility model is airtight, and each valve is opened only when in use, so no odor will escape, and it is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a feces and urine sewage collection and treatment system of the utility model;

[0028] Figure 2 for Figure 1 The functional block diagram of the system shown.

[0029] Figure number identification:

[0030] 1. Toilet, 11. Sewage pumping button, 12. Flush button, 13. Lubrication button, 14. Seat pressure sensor;

[0031] 2. Separation pipeline, 21. feces discharge pipe, 22. drainage pipe, 23. feces discharge valve, 24. drainage valve;

[0032] 3. Vacuum device, 31. Vacuum pipeline, 32. Vacuum tank, 33. Vacuum generating device, 34. Microwave generating device, 35. Vacuum tank liquid level sensor, 36. Vacuum pressure sensor;

[0033] 4. Fermentation device, 41. Biogas tank, 42. Stirring device, 43. Slag discharge valve, 44. Pressure reducing exhaust pipeline, 45. Pressure reducing valve, 46. Heating coil, 47. Biogas tank liquid level sensor;

[0034] 5. Sewage pump; 6. Flushing unit, 61. Water tank, 62. Flushing pump, 63. Flushing valve; 7. Lubrication unit, 71. Lubricating fluid tank, 72. Lubricating fluid pump, 73. Lubricating fluid control valve, 8. Control module, 9. Connecting valve. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0036] A feces and urine sewage collection and treatment system, as shown in the attached Figure 1 , 2 As shown, the main body includes a toilet 1, a separation pipeline 2, a vacuum device 3, and a fermentation device 4 connected in sequence. The bottom of the toilet 1 is connected to the separation pipeline 2, and the separation pipeline 2 includes a tee connected to the bottom outlet of the toilet 1. The other two ways of the tee are respectively connected to the feces discharge pipe 21 and the drainage pipe 22. The feces discharge pipe 21 is installed with a feces discharge valve 23 and connected to the vacuum device 3, and the drainage pipe 22 is installed with a drainage valve 24 and connected to the rainwater pipe. The feces discharge valve 23 and the drainage valve 24 are connected to the output end of the control module 8, and the control module 8 is a single chip or PLC.

[0037] The inner wall of the toilet bowl of the toilet 1 is coated with a polyfluoroethylene non-stick coating, and a flushing unit 6 and a lubricating unit 7 are installed on the toilet 1. The lubricating unit 7 sprays a lubricating liquid on the inner wall of the toilet 1. Through the cooperation of the lubricating liquid on the inner wall of the toilet 1 and the negative pressure of the vacuum device 3, it can ensure that the feces and urine are completely sucked into the vacuum device without flushing, forming a waterless vacuum toilet mode, which complies with the principle of water saving. The lubricating unit 7 includes a lubricating liquid tank 71, which is connected to the nozzle on the inner wall of the toilet 1 through a pipeline, and a lubricating liquid pump 72 and a lubricating liquid control valve 73 are installed on the pipeline. The lubricating liquid pump 72 and the lubricating liquid control valve 73 are connected to the output end of the control module 8. The lubricating liquid used in the lubricating unit 7 is a biodegradable organic lubricating liquid, such as a linear new polyol ester. The lubricating liquid can be degraded into carbon dioxide and water under the action of microorganisms, without causing pollution to the soil, water and air.

[0038] The flushing unit 6 flushes the inner wall of the toilet 1 and discharges water into the drain pipe 22. The flushing unit 6 includes a water tank 61, which is connected to the water outlet arranged on the inner wall of the toilet 1 through a pipeline. A flushing pump 62 and a flushing valve 63 are installed on the pipeline to control the flushing of the toilet. It is set that the feces valve 23 and the drain valve 24 cannot be opened at the same time. When the flushing unit 6 starts flushing, the drain valve 24 is opened and the feces valve 23 is closed; when the vacuum device 3 negatively pumps feces, the feces valve 23 is opened and the drain valve 24 is closed. In the scheme, the feces pumping and flushing processes are carried out independently, and the flushing water will not enter the vacuum device 3, and the flushing water will not be mixed with feces and urine. In addition, the amount of lubricating liquid used is very small, which can meet the feces and urine concentration for anaerobic digestion effect, so that the dry matter content of human feces and urine in the biogas tank is greater than 3%, ensuring the smooth fermentation of biogas.

[0039] The scheme sets two modes of automatic and manual control of lubrication, feces extraction and flushing. In the manual mode, the toilet 1 is provided with a feces extraction button 11, a flushing button 12, and a lubrication button 13 to manually control the start and stop of the feces discharge valve 23, the flushing unit 6, and the lubrication unit 7. When the lubrication button 13 is pressed, the lubricating liquid pump 72 and the lubricating liquid control valve 73 are opened to spray the lubricating liquid on the inner wall of the toilet 1; when the feces extraction button 11 is pressed, the feces discharge valve 23 is opened, the drain valve 24 remains closed, and feces and urine are sucked into the vacuum device 3; when the flushing button 12 is pressed, the drain valve 64 is opened, the feces discharge valve 23 remains closed, and the flushing water is discharged into the drain pipe 22.

[0040] In the automatic mode, a seat pressure sensor 14 is provided on the toilet 1. The seat pressure sensor 14 is pressurized to start the lubricating liquid pump 72 and the lubricating liquid control valve 73 of the lubricating unit 7, and spray the lubricating liquid on the inner wall of the toilet 1 (if it is a squat toilet, a foot pedal button is installed at the foot station as the seat pressure sensor 14). When the pressure of the seat pressure sensor 14 is released, the feces discharge valve 23 is automatically opened, and feces and urine are sucked into the vacuum device 3 due to the negative pressure. The above-mentioned feces extraction button 11, flushing button 12, and lubrication button 13 are connected to the output end of the control module 8, and the seat pressure sensor 14 is connected to the input end of the control module 8 to output signals.

[0041] The vacuum device 3 includes a vacuum pipe 31, a vacuum tank 32, and a vacuum generating device 33, a microwave generating device 34, a vacuum tank liquid level sensor 35 and a vacuum pressure sensor 36 installed on the vacuum tank 32. The vacuum pipe 31 transports the feces and urine discharged from the feces discharge pipe 21 to the vacuum tank 32, the vacuum generating device 33 evacuates the vacuum tank to form a vacuum negative pressure state, the microwave generating device 34 is intermittently turned on to sterilize the inside of the tank, the vacuum pressure sensor 36 measures the vacuum pressure, and the vacuum tank liquid level sensor 35 measures the amount of feces and urine stored in the tank. The vacuum generating device 33 and the microwave generating device 34 are connected to the output end of the control module 8, and the vacuum tank liquid level sensor 35 and the vacuum pressure sensor 36 are connected to the input end of the control module 8.

[0042] The fermentation device 4 mainly includes a biogas tank 41 and a stirring device 42. The stirring device 42 is installed on the top of the biogas tank 41, including a motor installed on the top of the biogas tank 41, and the output end of the motor extends into the biogas tank 41 to connect the stirring blades. A discharge port is provided on the side wall of the biogas tank 41 and a slag discharge valve 43 is provided. A pressure-reducing exhaust pipeline 44 is provided on the top. A pressure-reducing exhaust pipeline 44 is provided with a pressure-reducing valve 45 to control exhaust. The biogas tank is equipped with a biogas tank liquid level sensor 47. When the pressure in the tank is greater than 1.3 atmospheres, the pressure-reducing valve 45 of the pressure-reducing exhaust pipeline 44 automatically opens to exhaust gas outward to avoid overpressure. The stirring device 42, the heating coil 46, the drain valve, and the pressure-reducing valve 45 are connected to the output end of the control module 8, and the biogas tank liquid level sensor 47 is connected to the input end of the control module 8.

[0043] In this embodiment, two biogas tanks 41 are arranged in parallel, and the two biogas tanks 41 are used alternately. A connecting valve 9 is configured between each biogas tank 41 and the sewage pump 5 to control the on-off, so as to realize the switching of the biogas tank 41. It usually takes about 100 days for the fermentation of feces and urine to be fully fermented into mature materials. However, unripe manure can easily cause soil salinization, resulting in seed failure to germinate, seedling burning, and root burning; unfermented mature materials will also produce harmful gases and poison plants. In order to ensure the complete fermentation of feces and urine in the pool, the embodiment sets a biogas tank 41 to collect feces for 120 days, and switches to the second biogas tank 41 for collection after 120 days. After the first biogas tank 41 continues to ferment for 80 days, the manure pumping truck starts to pump out the biogas liquid and biogas residue, which will be pumped out within 30 days. After the pumping is completed, the first biogas tank 41 enters the standby state. The capacity of the biogas tank 41 is set according to the use scenario and the number of people. When the liquid level detection reaches the upper limit and the pool needs to be replaced, the other biogas tank has completed the fermentation and slag extraction process, and can be switched to the subsequent process to meet the storage and fermentation requirements. The biogas produced by fermentation is pumped away by the gas pumping truck and sent to the gas-using unit, and the biogas liquid and sludge pumped out by the feces pumping truck are sent to the farmland for fertilization. After completing the above processes, the pond is cleaned to facilitate the smooth fermentation next time.

[0044] Furthermore, a heating coil 46 is provided at the bottom of the biogas tank 41 to heat the liquid in the tank, and the heating coil 46 is a hot water pipe of an external hot water circulation device. When the temperature is low in winter, the hot water pipe is started to heat, so that the fermentation temperature reaches the temperature of the usual biogas fermentation, which is conducive to improving the fermentation rate. At the same time, harmful substances such as harmful bacteria and parasite eggs in feces and urine must be fermented at a certain temperature (40 degrees) for a sufficient time (100 days) to kill all pathogens or parasites, and obtain safe and harmless organic fertilizer products, which can be safely used for crops, thereby achieving harmless treatment.

[0045] The above-mentioned feces and urine sewage collection and treatment system specifically includes the following steps:

[0046] S1, in the initial state, the feces discharge valve 23 and the drainage valve 24 are in the closed state, the vacuum generating device 33 works to pump the negative pressure in the vacuum tank 32 to a preset value and then stops, entering the pressure maintaining state; if the negative pressure in the vacuum tank 32 is lower than the preset value, the vacuum generating device 33 starts again to pump the negative pressure in the tank to the preset value;

[0047] S2, when a person sits on the toilet 1, the seat pressure sensor 14 on the toilet 1 ring is pressed and outputs a signal, and the lubrication unit 7 is started to spray lubricating liquid onto the inner wall of the toilet 1, and the lubricating liquid pump 72 and the lubricating liquid control valve 73 are opened, and the amount of lubricating liquid sprayed each time is 2-4 ml;

[0048] S3, after using the toilet, the user stands up, the seat pressure sensor 14 outputs a signal to open the feces discharge valve 23, and the drainage valve 24 remains closed. The feces and urine are sucked into the vacuum tank 32 due to the negative pressure for feces extraction. The feces extraction time is set to 0.3s. After the feces extraction is completed, the feces discharge valve 23 is closed to isolate the feces and urine from the outside;

[0049] S4, when the vacuum tank liquid level sensor 35 in the vacuum tank 32 detects that the feces and urine are stored to a preset value, the sewage pump 5 starts to transport the feces and urine to the biogas tank 41 of the fermentation device 4 for fermentation, and the stirring device 42 rotates continuously to make the fermentation raw materials evenly distributed; when the number of days for collecting in the biogas tank 41 reaches 120 days or the liquid level sensor 47 in the middle biogas tank detects that the maximum limit is reached, the connecting valve 9 is switched to allow the feces and urine to enter another biogas tank 41;

[0050] S5. The biogas generated by fermentation is pumped away by a pumping truck through the reduced pressure exhaust pipeline 44 and sent to a gas user. The biogas liquid and biogas residue are pumped out by a manure pumping truck through the discharge port and sent to farmland for fertilization.

[0051] S6. After the toilet 1 has been used for a period of time, the flushing button 12 is pressed to start the flushing unit 6 to flush water into the toilet 1. At this time, the feces discharge valve 23 is closed and the drain valve 24 is opened. The flushing water is connected to the rainwater pipe through the drain pipe 22. The flushing time is set to 0.3s. The drain valve 24 is automatically closed and restored to the initial state after being opened for 10 seconds.

[0052] The above steps are automatic mode. If the seat pressure sensor 14 is damaged or turned off, the manual mode can be used, wherein the following steps are:

[0053] S2, when going to the toilet, the lubrication button 13 is pressed to output a signal, the lubrication unit 7 is started to spray the lubricating liquid onto the inner wall of the toilet 1, the lubricating liquid pump 72 and the lubricating liquid control valve 73 are opened, and the amount of lubricating liquid sprayed each time is 2-4 ml;

[0054] S3. After using the toilet, press the feces extraction button 11 to output a signal to open the feces discharge valve 23, and keep the water discharge valve 24 closed. Feces and urine are sucked into the vacuum tank 32 due to negative pressure for extraction. The feces extraction time is set to 0.3s. After the feces extraction is completed, the feces discharge valve 23 is closed to isolate the feces and urine from the outside.

[0055] Through this embodiment, the amount and difficulty of urban sewage treatment can be reduced, the cost of fecal and urine sewage treatment is low, the environmental protection effect is good, the difficult problem of domestic sewage treatment can be completely solved from the source, and the effective ingredients in human feces and urine can be fully utilized to achieve resource recycling. This system can be used in high-speed rail toilets, ship toilets, rural family toilets, tourist attraction toilets, urban building toilets, etc., to treat and utilize feces and urine in local areas on the spot, and has good application value.

[0056] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and variations of these embodiments without departing from the principle and spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. A system for collecting and treating fecal and urine sewage, characterized in that: It comprises a toilet (1), a separation pipeline (2), a vacuum device (3) and a fermentation device (4) which are connected in sequence; The separation pipeline (2) comprises a tee connected to the bottom outlet of the toilet (1), the other two ways of the tee are respectively connected to the feces discharge pipe (21) and the drainage pipe (22), and are controlled to be on and off by the corresponding feces discharge valve (23) and the drainage valve (24), and the feces discharge valve (23) and the drainage valve (24) cannot be opened at the same time; the feces discharge pipe (21) is connected to the vacuum device (3), and the drainage pipe (22) is connected to the rainwater pipe; The vacuum device (3) comprises a vacuum pipe (31), a vacuum tank (32) and a vacuum generating device (33); the feces discharge pipe (21) is connected to the top of the vacuum tank (32) through the vacuum pipe (31); the vacuum generating device (33) causes the vacuum tank (32) to form a vacuum negative pressure state; the bottom of the vacuum tank (32) is connected to the biogas tank (41) of the fermentation device (4) through a sewage pump (5); the biogas tank (41) is equipped with a stirring device (42); The inner wall of the toilet bowl (1) is coated with a non-stick coating, a flushing unit (6) and a lubricating unit (7) are installed on the toilet (1), the lubricating unit (7) sprays lubricating liquid on the inner wall of the toilet (1), the flushing unit (6) flushes the inner wall of the toilet (1), and the flushing water is discharged into the rainwater pipe through the drain pipe (22); The feces discharge valve (23), the water discharge valve (24), the vacuum generating device (33), the stirring device (42), the sewage pump (5), the flushing unit (6), and the lubrication unit (7) are connected to a control module (8).

2. A fecal and urine sewage collection and treatment system according to claim 1, characterized in that: The lubrication unit (7) comprises a lubrication liquid tank (71), which is connected to a nozzle on the inner wall of the toilet (1) via a pipeline, and a lubrication liquid pump (72) and a lubrication liquid control valve (73) are installed on the pipeline.

3. A fecal and urine sewage collection and treatment system according to claim 1, characterized in that: The flushing unit (6) comprises a water tank (61), which is connected to a water outlet arranged on the inner wall of the toilet (1) through a pipeline. A flushing pump (62) and a flushing valve (63) are installed on the pipeline to control flushing of the toilet. When the flushing valve (63) is opened, the drainage valve (24) is opened and the feces discharge valve (23) is closed.

4. A fecal and urine sewage collection and treatment system according to claim 1, characterized in that: The fermentation device (4) comprises at least two biogas tanks (41) arranged in parallel for use alternately, a connecting valve (9) is arranged between each biogas tank (41) and a sewage pump (5) to control the on-off, a biogas tank liquid level sensor (47) is arranged in the biogas tank (41), a discharge port is arranged on the side wall of the tank body and a slag discharge valve (43) is arranged, a pressure reducing exhaust pipeline (44) is arranged on the top, and a pressure reducing exhaust pipeline (44) is provided with a pressure reducing valve (45) to control exhaust.

5. The system for collecting and treating fecal and urine wastewater according to claim 1, characterized in that: The vacuum tank (32) is equipped with a microwave generator (34) for intermittent sterilization of the interior of the tank body; a vacuum tank liquid level sensor (35) is installed in the vacuum tank (32) to measure the volume of feces and urine, and a vacuum pressure sensor (36) is installed to measure the vacuum pressure; the microwave generator (34), the vacuum tank liquid level sensor (35) and the vacuum pressure sensor (36) are connected to a control module (8).

6. A fecal and urine sewage collection and treatment system according to claim 1, characterized in that: The stirring device (42) comprises a motor installed on the top of the biogas tank (41), and the output end of the motor extends into the biogas tank (41) and is connected to a stirring fan blade; a heating coil (46) is arranged at the bottom of the biogas tank (41) to heat the liquid in the tank.

7. The system for collecting and treating fecal and urine wastewater according to claim 1, characterized in that: The toilet (1) is provided with a feces extraction button (11), a flushing button (12), and a lubrication button (13) for respectively controlling the start and stop of a feces discharge valve (23), a flushing unit (6), and a lubrication unit (7); The toilet (1) is provided with a seat pressure sensor (14), and the seat pressure sensor (14) activates the lubrication unit (7) when it is pressurized. When the seat pressure sensor (14) releases the pressure, the feces discharge valve (23) is opened, and feces and urine are sucked into the vacuum tank (32) due to the negative pressure.

8. The system for collecting and treating fecal and urine wastewater according to claim 1, characterized in that: The non-stick coating on the inner wall of the toilet (1) is made of polyvinyl fluoride material, and the lubricating liquid used in the lubricating unit (7) is a biodegradable organic lubricating liquid.

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