Feces resource utilization method and system

Abstract

The invention provides a feces resource utilization method and system, and the feces resource utilization method comprises the steps: carrying out solid-liquid separation on feces to obtain solid feces and liquid feces; the solid excrement is dried, and dried solid excrement is obtained; pyrolyzing and carbonizing the dried solid excrement to generate hot oil gas and biochar; the hot oil gas is used for direct combustion power generation to obtain hot flue gas and electric energy; wherein the hot flue gas is used for drying solid excrement, and the electric energy is used for providing energy for solid-liquid separation of the excrement; carrying out adsorption treatment on the liquid manure water by utilizing biochar to obtain treated tail water; cooling the generated biochar by using tail water; carrying out crushing treatment on the cooled biochar to obtain primary biochar powder; generating the carbon-based fertilizer by using the secondary charcoal powder, wherein the secondary charcoal powder is obtained by performing adsorption treatment on the liquid manure water by the primary charcoal powder. According to the method, the resource utilization of the feces can be fully realized, and secondary pollution is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of waste recycling, and in particular to a method and system for resource utilization of excrement. Background Art

[0002] According to the source, feces and sewage can be divided into human feces and livestock and poultry feces and sewage. Among human feces and sewage, feces and sewage from rural toilets mainly include septic tank feces and toilet pit feces and sewage, which are usually used for composting and biogas production after treatment.

[0003] With the advancement of toilet reform in rural areas of my country, most rural areas have realized toilet reform. However, the treatment and utilization of toilet feces and sewage are not optimistic. Unlike traditional dry toilet feces and sewage, the feces and sewage after the toilet reform have a large water content and a large amount of production, and there are the following problems: First, due to the influence of seasons, direct return to the field for consumption is limited; second, due to the instability and small amount of biogas production, the current farmers' biogas is basically abandoned, and the biogas projects of large-scale breeding farms usually do not use toilet feces and sewage as anaerobic fermentation raw materials due to the difference in the nature of toilet feces and sewage and livestock and poultry feces; third, the feces and sewage are transported to sewage treatment plants, with high transportation and treatment costs, and are sent to organic fertilizer plants, which are usually not accepted due to the high water content of feces and sewage. Toilet feces and sewage with nowhere to put are more likely to be randomly discarded in open spaces, ditches, rivers or gullies far away from the village, which brings a very high risk of secondary pollution and seriously affects the living environment in rural areas. Therefore, there is an urgent need for a method and system for resource utilization of feces and sewage. Summary of the invention

[0004] The present invention provides a method and system for resource utilization of manure and sewage, which are used to solve the defect that manure and sewage cannot be utilized as resources in the prior art, and realize resource utilization of manure and sewage without secondary pollution.

[0005] The present invention provides a method for resource utilization of feces and sewage, which comprises: The feces are separated into solid and liquid to obtain solid feces and liquid feces water; Drying the solid feces to obtain dried solid feces; The dried solid feces are pyrolyzed and carbonized to generate hot oil gas and biochar; Use hot oil and gas to directly burn and generate electricity to obtain hot flue gas and electricity; the hot flue gas is used to dry solid feces, and the electricity is used to provide energy for solid-liquid separation of feces; The liquid manure water is adsorbed by biochar to obtain treated tail water; Using tail water to cool the generated biochar; The cooled biochar is crushed to obtain primary biochar powder; Carbon-based fertilizer is generated by using secondary biochar powder, wherein the secondary biochar powder is obtained by adsorbing liquid manure water by primary biochar powder.

[0006] According to a method for resource utilization of feces provided by the present invention, in the process of pyrolysis and carbonization of the dried solid feces, the pyrolysis temperature is set to 300° C.~500° C., and the pyrolysis time is set to 30 min~60 min.

[0007] According to a method for resource utilization of manure provided by the present invention, in the process of using biochar to adsorb liquid manure, the biochar to water ratio is 1:10~1:2.

[0008] According to a method for resource utilization of manure provided by the present invention, in the process of using tail water to cool the generated biochar, the temperature of the biochar is reduced to below 100°C.

[0009] According to a method for resource utilization of manure provided by the present invention, the particle size of the primary biochar powder is less than 80 meshes.

[0010] The present invention also provides a manure resource utilization system, which includes a mechanical filter press device, a drying device, a pyrolysis carbonization device, a hot oil and gas direct combustion power generation device, a manure water treatment device, a coke quenching device, a crushing device and a carbon-based fertilizer production device; The mechanical filter press device is used to separate the feces into solid and liquid to obtain solid feces and liquid feces water; The drying device is used to dry the solid feces to obtain dried solid feces; The pyrolysis and carbonization device is used to pyrolyze and carbonize the dried solid feces to generate hot oil gas and biochar; The hot oil and gas direct combustion power generation device uses hot oil and gas for direct combustion power generation to obtain hot flue gas and electric energy; wherein the hot flue gas is used to dry solid feces, and the electric energy is used to provide energy for solid-liquid separation of feces; The manure water treatment device is used to perform adsorption treatment on liquid manure water to obtain treated tail water; The quenching device uses tail water to cool the generated biochar; The crushing device is used to crush the cooled biochar to obtain primary biochar powder; The carbon-based fertilizer production device uses secondary biochar powder to generate carbon-based fertilizer; wherein the secondary biochar powder is obtained by adsorbing liquid feces water by primary biochar powder. According to a feces resource utilization system provided by the present invention, feces and sewage are received through the feed port of the mechanical filter press device, the solid feces discharge port of the mechanical filter press device is connected to the feed port of the drying device, and the liquid feces discharge port of the mechanical filter press device is connected to the feces water inlet of the feces water treatment device; The material outlet of the drying device is connected to the material inlet of the pyrolysis carbonization device, the hot oil and gas outlet of the pyrolysis carbonization device is connected to the hot oil and gas inlet of the hot oil and gas direct-fired power generation device, and the material outlet of the pyrolysis carbonization device is connected to the material inlet of the coke quenching device; The hot flue gas outlet of the hot oil and gas direct-fired power generation device is connected to the hot flue gas inlet of the drying device, and the electric energy generated by the hot oil and gas direct-fired power generation device is supplied to the mechanical filter press device; The discharge port of the coke quenching device is connected to the feed port of the crushing device, the discharge port of the crushing device is connected to the biochar feed port of the manure water treatment device, and the tail water outlet of the manure water treatment device is connected to the tail water inlet of the coke quenching device; The biochar discharge port of the manure water treatment device is connected to the feed port of the carbon-based fertilizer production device, and the discharge port of the carbon-based fertilizer production device is used to output the carbon-based fertilizer.

[0011] According to a manure resource utilization system provided by the present invention, the mechanical filter press device adopts an automatic high-pressure diaphragm filter press, including a high-pressure diaphragm, a filter cloth, and a feed pump; Under the pressure of the feed pump, the feces are sent into the filter chamber, squeezed by the high-pressure diaphragm, and the sludge and liquid are separated by the filter cloth.

[0012] According to a manure resource utilization system provided by the present invention, the pyrolysis carbonization device comprises a screw feeder and a pyrolysis furnace, the top of the pyrolysis furnace is provided with a hot oil and gas outlet, and the bottom is provided with a biochar outlet; The dried solid feces are evenly fed into the pyrolysis chamber of the pyrolysis furnace by a spiral feeder. A movable grate is provided at the bottom of the pyrolysis furnace, and a combustion chamber is arranged on the grate. The pyrolysis chamber and the combustion chamber on the grate are isolated from each other. When the furnace is started, the hot flue gas generated by combustion heats the pyrolysis chamber, so that the solid feces in the pyrolysis chamber are pyrolyzed, and the hot oil and gas are discharged through the hot oil and gas outlet, and the generated biochar is discharged through the biochar outlet.

[0013] According to a waste resource utilization system provided by the present invention, the coke quenching device comprises a coke quenching tower, a spraying pipe, a coke cooling platform and a scraper coke discharge machine; The pyrolyzed biochar is sent to the quenching tower, and the treated tail water is sprayed through the spray pipe to cool the biochar. The quenched biochar is sent to the cooling station, where it is cooled and the water in the biochar is evaporated. The biochar is then scraped to the belt conveyor by the scraper discharger and sent to the crushing device.

[0014] The present invention provides a method and system for resource utilization of manure and sewage. By directly burning hot oil and gas generated by pyrolysis and carbonization of manure and sewage to generate electricity, the energy in the manure and sewage can be recovered, and the obtained electric energy can be used for solid-liquid separation of the manure and sewage; the adsorption capacity of biochar obtained by pyrolysis and carbonization of manure and sewage is used to adsorb liquid manure water to obtain tail water; the tail water in the manure and sewage can be recovered and used as spray water to quench and cool the biochar after pyrolysis and carbonization; the primary biochar powder obtained by crushing is used to fully recover nutrients such as nitrogen, phosphorus, organic matter in the liquid manure and sewage to obtain secondary biochar powder, and the secondary biochar powder is used for the production of carbon-based fertilizer. The present invention can fully realize the resource utilization of manure and sewage without secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the process of the method for resource utilization of feces and sewage provided by the present invention; Figure 2 It is a structural schematic diagram of the manure resource utilization system provided by the present invention.

[0017] Reference numerals: 201: Mechanical filter press device; 202: Drying device; 203: Pyrolysis carbonization device; 204: Hot oil and gas direct combustion power generation device; 205: Manure and water treatment device; 206: Coke quenching device; 207: Crushing device; 208: Carbon-based fertilizer production device. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings 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.

[0019] Although there are methods for resource utilization of feces and sewage in the prior art, these methods cannot simultaneously recycle the substances and energy in the feces and sewage. Therefore, to address this problem, the present invention proposes a method and system for resource utilization of feces and sewage.

[0020] Combine the following Figure 1-Figure 2 The method and system for resource utilization of feces and sewage provided by the present invention are described. It should be noted that the present invention can be used for resource utilization of feces and sewage from rural toilets, feces and sewage from urban toilets, and feces and sewage from livestock and poultry.

[0021] like Figure 1 As shown, the method for resource utilization of feces and sewage provided by the present invention comprises the following steps: S1. Separate the feces into solid and liquid to obtain solid feces and liquid feces water.

[0022] S2, drying the solid feces to reduce the water content to below 40%, thereby obtaining dried solid feces.

[0023] S3. The dried solid feces are pyrolyzed and carbonized to generate hot oil gas and biochar.

[0024] Among them, the pyrolysis temperature can be set to 300°C~500°C, and the pyrolysis time can be set to 30min~60min.

[0025] S4. Use hot oil and gas for direct combustion to generate electricity, and obtain hot flue gas and electrical energy; wherein, the hot flue gas is used to dry solid feces, and the electrical energy is used to provide energy for solid-liquid separation of feces.

[0026] S5. Use biochar to adsorb liquid manure water to obtain treated tail water; wherein the biochar to liquid manure water carbon ratio is 1:10~1:2.

[0027] S6. Using a portion of the tail water to cool the biochar generated in step S3 to reduce the temperature of the biochar to below 100° C.; the other portion of the tail water is discharged for treatment.

[0028] S7. The cooled biochar is crushed to obtain primary biochar powder; wherein the particle size of the primary biochar powder is less than 80 meshes, and the primary biochar powder is used for adsorption treatment of liquid manure.

[0029] S8. The secondary biochar powder generates carbon-based fertilizer, wherein the secondary biochar powder is obtained by adsorbing liquid manure water with the primary biochar powder.

[0030] The method for resource utilization of manure and sewage provided by the present invention utilizes hot oil and gas generated by pyrolysis and carbonization for direct combustion to generate electricity, and the generated electricity is used to provide energy for solid-liquid separation of manure and sewage; the moisture in manure and sewage is recycled and utilized for quenching and cooling of biochar; the biochar generated by pyrolysis and carbonization is used as an adsorption material to purify manure water, and nutrients such as nitrogen, phosphorus, organic matter, etc. in the manure water are fully recovered through the adsorption effect of biochar for use in the production of carbon-based fertilizers; the method for resource utilization of manure and sewage provided by the present invention can fully recycle and utilize the energy and substances in manure and sewage, and there is no secondary pollution.

[0031] The manure and sewage resource utilization system provided by the present invention is described below. The manure and sewage resource utilization system described below and the manure and sewage resource utilization method described above can be referenced to each other.

[0032] Based on the method for resource utilization of manure and sewage provided by the present invention, the present invention also provides a system for resource utilization of manure and sewage, which includes a mechanical filter press device 201, a drying device 202, a pyrolysis carbonization device 203, a hot oil and gas direct combustion power generation device 204, a manure water treatment device 205, a quenching device 206, a crushing device 207 and a carbon-based fertilizer production device 208.

[0033] The mechanical filter press device 201 is used to separate the solid and liquid of feces and sewage to obtain solid feces and liquid feces water.

[0034] The drying device 202 is used to dry the solid feces to reduce the water content of the solid feces to below 40%, thereby obtaining dried solid feces.

[0035] The pyrolysis carbonization device 203 is used to pyrolyze and carbonize the dried solid feces to generate hot oil gas and biochar. The pyrolysis temperature can be set to 300°~500°, and the pyrolysis time can be set to 30min~60min.

[0036] The hot oil and gas direct combustion power generation device 204 utilizes hot oil and gas for direct combustion power generation to obtain hot flue gas and electric energy; wherein the hot flue gas is used to dry solid feces, and the electric energy is used to provide energy for solid-liquid separation of feces.

[0037] The manure water treatment device 205 is used to perform adsorption treatment on the liquid manure water to obtain treated tail water; wherein the carbon-water ratio of the biochar to the liquid manure water in the manure water treatment device 205 is 1:10~1:2.

[0038] The quenching device 206 uses tail water to cool the generated biochar to below 100°C.

[0039] The crushing device 207 is used to crush the cooled biochar to obtain primary biochar powder; wherein the particle size of the primary biochar powder is less than 80 mesh, and it is used for adsorption treatment of liquid manure.

[0040] The charcoal-based fertilizer production device 208 utilizes secondary biochar powder to generate charcoal-based fertilizer; wherein the secondary biochar powder is obtained by adsorbing liquid manure water with primary biochar powder.

[0041] The manure resource utilization system provided by the present invention utilizes the hot oil and gas direct-fired power generation device 204 to directly burn the hot oil and gas generated by the dried solid manure to generate electricity, recovers the energy in the manure, and supplies the obtained electric energy to the mechanical filter press device 201 for solid-liquid separation; the crushing device 207 is used to crush the biochar generated by the pyrolysis carbonization device 203 to obtain primary biochar powder, and the adsorption capacity of the primary biochar powder is used to adsorb liquid manure to obtain secondary biochar powder; the manure water treatment device 205 recycles and treats the liquid manure to obtain tail water, and uses the tail water as spray water to quench and cool the biochar obtained by the pyrolysis carbonization device 203; the secondary biochar powder fully recovers nutrients such as nitrogen, phosphorus, organic matter, etc. in the manure for the production of carbon-based fertilizers; the manure resource utilization system provided by the present invention can fully recycle and utilize the energy and substances in the manure without secondary pollution.

[0042] Furthermore, the mechanical filter press device 201 adopts an automatic high-pressure diaphragm filter press, including a high-pressure diaphragm, a filter cloth, and a feed pump.

[0043] Under the pressure of the feed pump, the feces are sent into the filter chamber, squeezed by the high-pressure diaphragm, and the sludge and liquid are separated by the filter cloth.

[0044] In the above embodiment, the mechanical filter press device 201 includes a feed port, a solid feces discharge port and a liquid feces discharge port; the drying device 202 includes a feed port, a discharge port and a hot flue gas inlet; the pyrolysis carbonization device 203 includes a feed port, a hot oil and gas outlet and a discharge port; the hot oil and gas direct-fired power generation device 204 includes a hot oil and gas inlet and a hot flue gas outlet; the quenching device 206 includes a feed port, a discharge port and a tail water inlet; the feces and water treatment device 205 includes a feces and water inlet, a tail water outlet, a biochar feed port and a biochar discharge port; the crushing device 207 includes a feed port and a discharge port; and the carbon-based fertilizer production device 208 includes a feed port and a discharge port.

[0045] Among them, the feces enter the mechanical filter press device 201 through the feed port of the mechanical filter press device 201, the solid feces discharge port of the mechanical filter press device 201 is connected to the feed port of the drying device 202, and the liquid feces discharge port of the mechanical filter press device 201 is connected to the feces inlet of the feces treatment device 205. The discharge port of the drying device 202 is connected to the feed port of the pyrolysis carbonization device 203, the hot oil and gas outlet of the pyrolysis carbonization device 203 is connected to the hot oil and gas inlet of the hot oil and gas direct-fired power generation device 204, and the discharge port of the pyrolysis carbonization device 203 is connected to the feed port of the quenching device 206. The hot flue gas outlet of the hot oil and gas direct-fired power generation device 204 is connected to the hot flue gas inlet of the drying device 202, and the electric energy generated by the hot oil and gas direct-fired power generation device 204 is supplied to the mechanical filter press device 201. The discharge port of the quenching device 206 is connected to the feed port of the crushing device 207, the discharge port of the crushing device 207 is connected to the biochar feed port of the manure water treatment device 205, and the tail water outlet of the manure water treatment device 205 is connected to the tail water inlet of the quenching device 206. The biochar discharge port of the manure water treatment device 205 is connected to the feed port of the carbon-based fertilizer production device 208, and the discharge port of the carbon-based fertilizer production device 208 is used to output carbon-based fertilizer.

[0046] In a specific embodiment, the pyrolysis carbonization device 203 uses a pyrolysis furnace, the hot oil and gas outlet is set at the top of the pyrolysis furnace, and the pyrolysis furnace uses a double screw discharger for discharge. The top of the pyrolysis furnace is provided with a hot oil and gas outlet and the bottom is provided with a biochar discharge port.

[0047] Furthermore, the pyrolysis furnace includes a combustion chamber, a combustion grate, a pyrolysis chamber, a screw feeder, a blower, a feed hopper, a fuel inlet, a hot oil and gas outlet, and a biochar outlet.

[0048] The dried solid feces are evenly fed into the pyrolysis chamber of the pyrolysis furnace by a spiral feeder. A movable grate is provided at the bottom of the pyrolysis furnace, and a combustion chamber is arranged on the grate. The pyrolysis chamber and the combustion chamber on the grate are isolated from each other. When the furnace is started, the hot flue gas generated by combustion heats the pyrolysis chamber, so that the solid feces in the pyrolysis chamber are pyrolyzed, and the hot oil and gas are discharged through the hot oil and gas outlet, and the generated biochar is discharged through the biochar outlet.

[0049] Furthermore, the coke quenching device includes a coke quenching tower, a spraying pipe, a coke cooling platform, and a scraper coke discharge machine.

[0050] The pyrolyzed biochar is sent to the quenching tower, where it is cooled by spraying the treated tail water. After quenching, the biochar is sent to the cooling platform, where it is cooled and the water in the biochar evaporates. The biochar is scraped by the scraper to the belt conveyor and sent to the crushing device. Wet quenching is to directly spray water on the red hot coke to extinguish it. Compared with dry quenching, the former requires less investment, simple technology and easy operation.

[0051] Furthermore, the charcoal-based fertilizer production device adopts a disc granulation device, and the secondary biochar powder enters the disc granulation, and the disc agglomerates the material into balls by rotating. The disc granulation device is characterized by simple equipment and low investment.

[0052] The working process of the manure resource utilization system provided by the present invention is described in detail using a specific embodiment below.

[0053] The feces and sewage in this embodiment are rural toilet feces and sewage, which come from a three-compartment septic tank, and the water content of the feces and sewage is 96.8%. The working process of the feces and sewage resource utilization system provided by the present invention is as follows: Mechanical filter pressing device 201: The toilet feces with a water content of 96.8% are separated into solid and liquid by mechanical filter pressing; wherein the water content of the generated solid feces is 68.5%.

[0054] Drying device 202: The solid feces with a moisture content of 68.5% is sent to the drying device 202; wherein, the heat source of the drying device 202 comes from the hot flue gas generated by the hot oil and gas direct-fired power generation device 204, the temperature of the hot flue gas is 150°~400°C, and the moisture content of the solid feces after drying is reduced to 37%.

[0055] Pyrolysis carbonization device 203: The dried solid feces is sent to the pyrolysis carbonization device 203, wherein the pyrolysis temperature is 500°C and the pyrolysis time is 45 minutes.

[0056] Hot oil and gas direct-fired power generation device 204: The hot oil and gas generated by the pyrolysis carbonization device 203 is directly sent to the hot oil and gas direct-fired power generation device 204 to generate electric energy. The generated electric energy is supplied to the mechanical filter press device 201, and the generated hot flue gas is supplied to the drying device 202.

[0057] Manure water treatment device 205: The liquid manure water produced by the mechanical filter press device 201 is sent to the manure water treatment device 205 with biochar as adsorbent, and the sewage is adsorbed and purified to obtain tail water. A part of the tail water enters the quenching device 206, and the other part meets the discharge standards; wherein, the carbon-water ratio of biochar to liquid manure water in the manure water treatment device 205 is 1:5.

[0058] Quenching device 206: The tail water produced by the manure water treatment device 205 is sent to the quenching device 206 for spraying and cooling the biochar produced by the pyrolysis carbonization device 203, and reducing the temperature of the biochar to below 100°C, and then crushed by the crushing device 207 and sent to the manure water treatment device 205.

[0059] Crushing system: The biochar after tail water spraying is sent to the crushing device 207, and the biochar is crushed to less than 80 meshes to obtain primary biochar powder.

[0060] Carbon-based fertilizer production device 208: The secondary biochar powder is fed into the carbon-based fertilizer production device 208, and the carbon-based fertilizer production device 208 granulates and shapes the secondary biochar powder to produce carbon-based fertilizer. The secondary biochar powder is obtained by adsorbing manure water on the primary biochar powder.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for resource utilization of feces and sewage, characterized in that: include: The feces are separated into solid and liquid to obtain solid feces and liquid feces water; Drying the solid feces to obtain dried solid feces; The dried solid feces are pyrolyzed and carbonized to generate hot oil gas and biochar; Use hot oil and gas to directly burn and generate electricity to obtain hot flue gas and electricity; the hot flue gas is used to dry solid feces, and the electricity is used to provide energy for solid-liquid separation of feces; The liquid manure water is adsorbed by biochar to obtain treated tail water; Using tail water to cool the generated biochar; The cooled biochar is crushed to obtain primary biochar powder; Carbon-based fertilizer is generated by using secondary biochar powder, wherein the secondary biochar powder is obtained by adsorbing liquid manure water by primary biochar powder.

2. The method for resource utilization of feces and sewage according to claim 1, characterized in that: In the process of pyrolysis and carbonization of the dried solid feces, the pyrolysis temperature is set to 300° C. to 500° C., and the pyrolysis time is set to 30 min to 60 min.

3. The method for resource utilization of feces and sewage according to claim 1 or 2, characterized in that: In the process of using biochar to adsorb liquid manure, the biochar to liquid manure ratio is 1:10~1:

2.

4. The method for resource utilization of feces and sewage according to claim 1 or 2, characterized in that: In the process of cooling the generated biochar using tail water, the temperature of the biochar is reduced to below 100°C.

5. The method for resource utilization of feces and sewage according to claim 1 or 2, characterized in that: The particle size of the primary biochar powder is less than 80 meshes.

6. A system for resource utilization of feces and sewage, characterized in that: It includes mechanical filter pressing device, drying device, pyrolysis carbonization device, hot oil and gas direct combustion power generation device, manure water treatment device, coke quenching device, crushing device and carbon-based fertilizer production device; The mechanical filter press device is used to separate the feces into solid and liquid to obtain solid feces and liquid feces water; The drying device is used to dry the solid feces to obtain dried solid feces; The pyrolysis and carbonization device is used to pyrolyze and carbonize the dried solid feces to generate hot oil gas and biochar; The hot oil and gas direct combustion power generation device uses hot oil and gas for direct combustion power generation to obtain hot flue gas and electric energy; wherein the hot flue gas is used to dry solid feces, and the electric energy is used to provide energy for solid-liquid separation of feces; The manure water treatment device is used to perform adsorption treatment on liquid manure water to obtain treated tail water; The quenching device uses tail water to cool the generated biochar; The crushing device is used to crush the cooled biochar to obtain primary biochar powder; The carbon-based fertilizer production device uses secondary biochar powder to generate carbon-based fertilizer; wherein the secondary biochar powder is obtained by adsorbing liquid manure water with primary biochar powder.

7. The manure resource utilization system according to claim 6 is characterized in that: The feces are received through the feed port of the mechanical filter press device, the solid feces discharge port of the mechanical filter press device is connected to the feed port of the drying device, and the liquid feces discharge port of the mechanical filter press device is connected to the feces inlet of the feces treatment device; The material outlet of the drying device is connected to the material inlet of the pyrolysis carbonization device, the hot oil and gas outlet of the pyrolysis carbonization device is connected to the hot oil and gas inlet of the hot oil and gas direct-fired power generation device, and the material outlet of the pyrolysis carbonization device is connected to the material inlet of the coke quenching device; The hot flue gas outlet of the hot oil and gas direct-fired power generation device is connected to the hot flue gas inlet of the drying device, and the electric energy generated by the hot oil and gas direct-fired power generation device is supplied to the mechanical filter press device; The discharge port of the quenching device is connected to the feed port of the crushing device, the discharge port of the crushing device is connected to the biochar feed port of the manure water treatment device, and the tail water outlet of the manure water treatment device is connected to the tail water inlet of the quenching device; The biochar discharge port of the manure water treatment device is connected to the feed port of the carbon-based fertilizer production device, and the discharge port of the carbon-based fertilizer production device is used to output the carbon-based fertilizer.

8. The manure and sewage resource utilization system according to claim 6 is characterized in that: The mechanical filter press device adopts an automatic high-pressure diaphragm filter press, including a high-pressure diaphragm, a filter cloth, and a feed pump; Under the pressure of the feed pump, the feces are sent into the filter chamber, squeezed by the high-pressure diaphragm, and the sludge and liquid are separated by the filter cloth.

9. The manure and sewage resource utilization system according to claim 6, characterized in that: The pyrolysis carbonization device comprises a screw feeder and a pyrolysis furnace, wherein the top of the pyrolysis furnace is provided with a hot oil and gas outlet, and the bottom of the pyrolysis furnace is provided with a biochar outlet; The dried solid feces are evenly fed into the pyrolysis chamber of the pyrolysis furnace by a spiral feeder. A movable grate is provided at the bottom of the pyrolysis furnace, and a combustion chamber is arranged on the grate. The pyrolysis chamber and the combustion chamber on the grate are isolated from each other. When the furnace is started, the hot flue gas generated by combustion heats the pyrolysis chamber, so that the solid feces in the pyrolysis chamber are pyrolyzed, and the hot oil and gas are discharged through the hot oil and gas outlet, and the generated biochar is discharged through the biochar outlet.

10. The manure resource utilization system according to claim 6, characterized in that: The coke quenching device comprises a coke quenching tower, a spraying pipe, a coke cooling platform and a scraper coke discharge machine; The pyrolyzed biochar is sent to the quenching tower, and the treated tail water is sprayed through the spray pipe to cool the biochar. The quenched biochar is sent to the cooling station, where it is cooled and the water in the biochar is evaporated. The biochar is then scraped to the belt conveyor by the scraper discharger and sent to the crushing device.

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