Composite ammonia decomposition system

Abstract

The utility model relates to the technical field of excrement treatment, in particular to an excrement ammonia gas treatment technology. Water is mostly contained in the black water tank, part of water resources are recycled from the black water tank, and waste of the water resources can be reduced. The combined type ammonia decomposition system comprises a black water tank, and further comprises a crushing and filtering system, a heating and oxidizing decomposition system and an evaporation drying system, the black water tank is sequentially communicated with the crushing and filtering system, the heating and oxygenolysis system and the evaporation drying system through pipelines to form a decomposition treatment passage for solid substances in the black water tank. The system further comprises a water treatment and recovery system; a steam output port of the evaporation separator is communicated with the water treatment and recovery system after passing through the heat exchanger, and the water can be recycled after being treated by the water treatment and recovery system. The device has the beneficial effects that the innocent treatment efficiency on the excrement is high, heat generated by combustion of combustible gas in the excrement is used for oxidizing ammonia gas, the consumption of electric energy can be reduced, and the treatment and recovery cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of fecal treatment technology, specifically to fecal ammonia treatment technology. Background Technology

[0002] In recent years, my country's high-speed rail construction has developed rapidly, and high-speed rail travel has become the first choice for most people.

[0003] However, due to space constraints on high-speed trains, the water tanks for storing clean water cannot be made very large, otherwise it would increase energy consumption. During the journey, water used for washing hands and flushing toilets often quickly depletes the onboard water supply, and the consumed water can only be replenished after the high-speed train stops at stations. Some stations have short stops, and the water supply may not be replenished within the stop time.

[0004] On the other hand, due to relevant environmental protection regulations, high-speed trains cannot discharge sewage at will during operation. Human excrement needs to be collected in a special black water tank at the bottom of the train for temporary storage. After arriving at the terminal station, the sewage in the black water tank is centrally treated in a harmless manner.

[0005] Black water tanks are mostly filled with water. If some of the water can be recycled from the black water tanks for reuse in toilet flushing, the consumption of clean water can be reduced, thus reducing water waste.

[0006] Human excrement is mainly composed of organic matter. During the degradation process, human excrement produces ammonia, which is highly toxic and affects human health. It can also damage plants and animals, affecting the ecological balance. In addition, ammonia reacts with other substances in the atmosphere to form secondary pollutants, further aggravating environmental pollution. Therefore, ammonia must be rendered harmless before it can be released. Utility Model Content

[0007] The purpose of this invention is to provide a composite ammonia decomposition system to solve at least one of the above-mentioned technical problems.

[0008] The technical problem solved by this utility model can be achieved by the following technical solution:

[0009] The composite ammonia decomposition system includes a black water tank, as well as a pulverizing and filtering system, a heating and oxidizing decomposition system, and an evaporation and drying system.

[0010] The black water tank is positioned below the heating oxidation decomposition system and the evaporation dehydration system.

[0011] The pulverizing and filtration system includes a pulverizing device for pulverizing fecal waste and a filtration device for solid-liquid separation.

[0012] The heating oxidation decomposition system includes a heating furnace;

[0013] The evaporation and desiccation system includes an evaporation separator, which is equipped with an evaporator and a separation chamber, and the separation chamber is equipped with a drying tank;

[0014] The black water tank is connected in sequence to the pulverizing and filtering system, the heating and oxidation decomposition system, and the evaporation and desiccation system, forming a pathway for the treatment of fecal waste in the black water tank.

[0015] It also includes a water treatment and recycling system, which includes a pre-filter, a post-filter, an RO membrane filter, and a greywater tank.

[0016] The evaporator includes a steam outlet for outputting water vapor;

[0017] The steam outlet of the evaporator passes through a heat exchanger and is then connected in sequence through a pipeline to a pre-filter, a post-filter, an RO membrane filter, and a medium-water tank, forming a filtration path for steam condensate.

[0018] The pre-filter uses PP cotton with a filtration accuracy of 50-100 microns as the filter element.

[0019] The post-filtration device uses PP cotton with a filtration accuracy of 5-15 microns as the filter element.

[0020] The RO membrane filter is equipped with a filtered water outlet and a wastewater outlet. The filtered water outlet pipe is connected to a medium water tank, and the wastewater outlet pipe is connected to a black water tank.

[0021] Feces are mainly composed of three-quarters water and one-quarter solids. The solids include organic matter, inorganic matter, fat, undigested fiber, digestive fluid residue, sloughed cells and bacteria, as well as small amounts of combustible gases such as methane and hydrogen produced in the digestive system.

[0022] In the above design, the function of the pulverizing and filtering system is to pulverize and filter the solid portion of the feces. After processing by the pulverizing and filtering system, the fecal waste is divided into two parts: filter residue and filtrate. The purpose of pulverizing the feces is twofold: firstly, to more efficiently release gases such as ammonia, methane, hydrogen, and hydrogen sulfide contained in the feces into the heating and oxidizing decomposition system; and secondly, to recover more moisture.

[0023] The filter residue after processing by the pulverizing and filtering system is a mixture of solid matter and water. This mixture is heated in a heating and oxidizing decomposition system. During heating, ammonia, methane, hydrogen, and hydrogen sulfide are released from the mixture. Methane, hydrogen sulfide, and oxygen undergo a vigorous combustion oxidation reaction, releasing a large amount of heat. Ammonia and oxygen, under the influence of the heat generated during the combustion of methane, hydrogen sulfide, and hydrogen sulfide, undergo an oxidation reaction to produce nitrogen and water. After passing through the heating and oxidizing decomposition system, harmful gases in the fecal waste are rendered harmless. The heat released from the combustion reaction of methane, hydrogen sulfide, and oxygen sustains the ammonia oxidation process, saving on electricity consumption.

[0024] After the heating and oxidation decomposition system removes harmful gases from the feces and sewage, insoluble solids remain. The evaporation and desiccation system separates these insoluble solids by evaporation. The separated solid particles are carbonized, and the carbonized material is precipitated in the drying tank for harmless recycling.

[0025] In the above design, the black water tank is positioned lower than the heating oxidation decomposition system, the evaporation dehydration system, and the ammonia pyrolysis system. The advantage of this is that wastewater that needs to be returned to the black water tank can flow back to the black water tank by gravity without consuming additional energy, thus saving costs.

[0026] In the above design, the steam output from the evaporator separator forms condensate after passing through a heat exchanger. This condensate is then treated by a water treatment and recovery system to reach reusable water quality. Its beneficial effect is reducing water waste and thus providing certain social benefits.

[0027] In the above design, the filtration accuracy is improved step by step through the pre-filtration device, post-filtration device, and RO membrane filter. Large particles of solid waste are intercepted in the pre-filtration device and post-filtration device, while waste smaller than 5 microns is filtered by the RO membrane. The beneficial effect is that the RO membrane has high filtration accuracy, but the operating cost is also high. After setting up the pre-filtration device and post-filtration device, the filtration burden of the RO membrane can be reduced, the service life of the RO membrane can be extended, the operating cost can be reduced, and expenses can be saved.

[0028] Furthermore, the pulverizing device employs a fluid pump with pulverizing function, which also has the function of diverting fecal waste in the black water tank;

[0029] The filtration device uses a self-cleaning filter, which has an inlet for liquid, an outlet for filtrate, and an outlet for filter residue.

[0030] The black water tank pipe is connected to the inlet of the fluid pump, and the outlet of the fluid pump is connected to the inlet of the self-cleaning filter, forming a system for crushing and filtering fecal waste.

[0031] The heating furnace of the heating oxidation decomposition system is an electromagnetic heating oxidation furnace, which includes an oxygen inlet for inputting pure oxygen, a material inlet for inputting filter residue, and a residue discharge outlet for discharging residue.

[0032] The slag discharge port of the self-cleaning filter is connected to the material conveying port of the electromagnetic heating oxidation furnace;

[0033] The drain pipe of the self-cleaning filter is connected to an electrochemical reactor;

[0034] The electrochemical reactor includes a container for holding filtrate, and positive and negative electrodes are arranged inside the container, which are respectively connected to the positive and negative terminals of a power source.

[0035] The electrochemical reactor pipeline is connected to the feed inlet of the electromagnetic heating oxidation furnace;

[0036] The evaporation separator includes a residue inlet for inputting residue;

[0037] The residue discharge port of the electromagnetic heating oxidation furnace is connected to the residue feed port of the evaporation separator.

[0038] In the above design, the pulverizing and filtering system is equipped with a fluid pump for pulverizing organic solids in feces. The fluid pump is a centrifugal pulverizing pump, which is equipped with a pulverizing mechanism that can pulverize organic solids when pumping them. After pulverization, the solids are filtered through a filter to form filter residue and filtrate.

[0039] The filter is a self-cleaning filter, which can maintain its filtration capacity for a long time.

[0040] In the above design, the heating oxidation decomposition system includes an electromagnetic heating oxidizer. The oxidizer heats the filter residue, and the organic matter in the fecal waste releases ammonia, methane, hydrogen sulfide, and a small amount of hydrogen under heating conditions. Opening the oxygen supply valve introduces pure oxygen, which reacts with methane, hydrogen, and hydrogen sulfide in the following oxidation reactions:

[0041] Pure oxygen and methane undergo the following chemical reaction:

[0042] CH4 + 2O2 → CO2 + 2H2O + Heat

[0043] Pure oxygen and hydrogen undergo the following chemical reaction:

[0044] 2H₂ + O₂ → 2H₂O + Heat

[0045] Pure oxygen and hydrogen sulfide undergo the following chemical reaction:

[0046] 2H₂S + 3O₂ → 2H₂O + 2SO₂

[0047] In the above process, the oxidation reaction of pure oxygen and ammonia requires heat, while the combustion reaction of pure oxygen with methane, hydrogen, and hydrogen sulfide generates a large amount of heat. The heat generated can sustainably maintain the heat required for ammonia oxidation, reducing the energy consumption of the electromagnetic heating oxidation furnace.

[0048] Pure oxygen and ammonia undergo the following oxidation reaction:

[0049] 4NH3 + 3O2 + heat → 2N2 + 6H2O

[0050] In the above design, the remaining residue after oxidative heating and decomposition is sent to an evaporator for evaporation separation. The evaporator is an existing technology. The residue evaporates water in the evaporator to form steam and waste residue. The waste residue settles in a drying tank inside the evaporator reactor and is then recycled after harmless treatment.

[0051] In the above design, the electrochemical reactor is a device that uses electrochemical technology to treat wastewater. It transforms and removes pollutants in water through electrochemical reactions on electrodes, and oxidizes organic matter into low-molecular-weight organic matter or directly oxidizes it into CO2 and H2O for discharge through the action of electric current.

[0052] Furthermore, between the fluid pump and the self-cleaning filter, there is also a jet pump and a pipeline mixer, and the black water tank is connected to the fluid pump, jet pump, pipeline mixer and self-cleaning filter in sequence through pipelines;

[0053] A ball valve is installed between the pipeline mixer and the self-cleaning filter as a filter ball valve;

[0054] Another pipe is installed on the pipe between the pipe mixer and the filter ball valve as a return pipe connected to the black water tank. A flow valve is installed on the return pipe as a return valve.

[0055] In the above design, fecal matter is first initially crushed in a fluid pump, then further crushed by a jet pump, mixed in a pipeline mixer to form a suspension, and finally filtered in a filter to form filtrate and filter residue.

[0056] The filtrate contains a small amount of organic pollutants and is connected to the water treatment and recovery system through a pipeline. The filter residue is connected to the heating and oxidation decomposition system through a pipeline equipped with an electrically controlled valve.

[0057] Jet pumps are an existing technology that converts high-speed fluid into a high-speed jet, generating special physical effects such as negative pressure, thrust, and shear force, thereby further pulverizing fecal matter.

[0058] Pipe mixers are also existing technology used to mix fecal matter into a suspension.

[0059] Adding a jet pump and a pipeline mixer further pulverizes the fecal matter. The beneficial effect is that the fecal matter is pulverized into smaller pieces, which improves the efficiency of water recovery and facilitates the release of more combustible gases in the heating and oxidizing decomposition system, thereby improving the efficiency of fecal matter treatment.

[0060] In the above design, the filter valve is closed and the return valve is opened. The fecal waste passes through the pipeline in sequence through the black water tank, the fluid pump, the jet pump, the pipeline mixer, and back to the black water tank, where it is crushed, mixed, and circulated.

[0061] Circulating fecal waste between the black water tank and the pulverizing and filtration system can further improve the degree of pulverization. Its beneficial effects are to improve the efficiency of water recovery and the degradation efficiency of solids in fecal waste.

[0062] Furthermore, the electromagnetic heating oxidation furnace includes a furnace body, and a stirring device is provided at the bottom of the furnace body. The stirring device is connected to a power motor.

[0063] A row of overflow outlets is provided on the upper part of the furnace body, and the overflow outlet pipes are connected to the black water tank;

[0064] Electromagnetic induction windings are evenly distributed around the outside of the furnace body;

[0065] It also includes an electrolytic oxygen generator, which has an oxygen output port, and the oxygen output port pipe is connected to the oxygen supply port of the electromagnetic heating oxidation furnace.

[0066] In the above design, the bottom of the electromagnetic heating oxidation furnace is equipped with a stirring device for stirring. The stirring device is driven by a power motor. Under the stirring action of the power motor, combustible gases, including methane, hydrogen, hydrogen sulfide and ammonia, in the fecal waste can be released from the fecal waste in a high-efficiency manner. These gases combine with the oxygen produced by the electrolytic oxygen generator, and the methane, hydrogen and hydrogen sulfide undergo a combustion reaction. The beneficial effect is that, on the one hand, these environmentally harmful gases are consumed through combustion, and on the other hand, the heat generated by combustion can sustain the oxidation process of ammonia and oxygen, saving electricity consumption.

[0067] Furthermore, the evaporation and desiccation system also includes an ultrasonic reactor that uses ultrasound to degrade and oxidize organic matter in wastewater, and a separator that separates liquids and solids.

[0068] The ultrasonic reactor includes a wastewater inlet and a wastewater outlet;

[0069] The separator includes a wastewater inlet pipe and a solids outlet;

[0070] The evaporation separator includes an outlet for discharging wastewater, which is located at the bottom of the wastewater.

[0071] The feed inlet pipe of the electromagnetic heating oxidation furnace is connected to the wastewater inlet of the ultrasonic reactor;

[0072] The wastewater discharge pipe of the ultrasonic reactor is connected to the residue feed port of the evaporator separator;

[0073] The outlet pipe of the evaporator is connected to the wastewater inlet pipe of the separator;

[0074] The solid discharge port of the separator is connected to the wastewater inlet of the evaporation separator.

[0075] The above design also includes an ultrasonic reactor and a separator in the evaporation and dehydration system. Its beneficial effect is that the ultrasonic reactor degrades and oxidizes the organic matter in the wastewater through the cavitation effect and mechanical effect of ultrasound, forming carbon dioxide and water, thereby reducing the organic solid matter in the wastewater.

[0076] In the above design, the wastewater from the evaporator contains organic particulate matter sediment at the bottom. The wastewater discharged from the evaporator also contains these organic particles. The separator separates solid matter from the wastewater, and the solid matter is returned to the evaporator for carbonization and drying, resulting in harmless recycling. The wastewater is directly discharged into the black water tank. The beneficial effects are reduced water content within the evaporator, saving the electrical energy required for evaporation, thus achieving energy conservation and emission reduction benefits.

[0077] Furthermore, the ultrasonic reactor includes an ultrasonic cavity;

[0078] A spray device is installed at the upper part of the ultrasonic cavity;

[0079] An ultrasonic transducer is fixedly connected to the lower part of the ultrasonic cavity.

[0080] The ultrasonic reactor is also equipped with a water pump. The pump inlet is located at the bottom of the ultrasonic cavity, and the pump outlet is connected to a spray device.

[0081] In the above design, the wastewater in the ultrasonic reactor is circulated and sprayed through a water pump. The beneficial effect is that the spraying device can improve the fusion of water and oxygen and improve the oxidation efficiency of organic matter.

[0082] Furthermore, the separator includes a centrifugal cutter;

[0083] The centrifugal cutter includes a housing;

[0084] The upper end of the shell is connected to an upper end cover, and a wastewater inlet pipe and a wastewater outlet pipe are provided in the middle of the upper end cover;

[0085] The lower end of the shell is connected to a lower end cover, and a solid particulate matter outlet is provided on the lower end cover. The solid particulate matter outlet pipe is connected to the evaporator separator.

[0086] An air inlet is provided on the lower side wall of the housing, and the air inlet enters tangentially along the inner wall of the housing;

[0087] The air inlet is connected to a hair dryer;

[0088] A drive motor is also connected to the middle of the lower end cover. The rotating shaft of the drive motor passes through the lower end cover and extends into the housing. A cutting disc mechanism is connected to the rotating shaft.

[0089] The cutting disc mechanism includes a turntable and a material cylinder;

[0090] The turntable is connected to the rotating shaft and is parallel to the upper cover. The center of the turntable coincides with the center of the upper cover.

[0091] The material cylinder is located on the side of the turntable facing the upper cover;

[0092] The material cylinder comprises concentric cylinders evenly distributed and enclosed by metal plates;

[0093] The material cylinder is 3-6mm away from the top cover;

[0094] On the side of the top cover facing the turntable, there are concentric cylinders formed by metal plates, which are called guide cylinders. The guide cylinders are 3-6mm away from the turntable.

[0095] Starting from the center and moving outwards, the material cylinder and the guide cylinder are arranged in a concentric, overlapping pattern.

[0096] In the above design, the separator housing contains a rotating disc and a material cylinder driven by a drive motor, forming a cutting disc mechanism. An air inlet is also provided inside the housing, connected to a blower, thus introducing high-speed airflow into the housing. Under the combined action of the high-speed airflow and the high-speed rotating cutting disc mechanism, the wastewater inside the separator impacts the material cylinder. Through centrifugal force, the tiny particles in the water are separated. These tiny particles are connected to an evaporator separator through a solid particle output pipe, where they are carbonized and dried, settling in a drying tank.

[0097] Furthermore, a first cyclone separator for gas-liquid separation is also included between the wastewater discharge port of the ultrasonic reactor and the residue feed port of the evaporation separator;

[0098] The gas separation port of the first cyclone separator is connected to the atmosphere;

[0099] The liquid separation port of the first cyclone separator is connected to the residue feed port of the evaporator separator.

[0100] In the above design, the ultrasonic reactor degrades and oxidizes organic matter to produce carbon dioxide. The beneficial effect of the first cyclone separator is that it separates carbon dioxide and wastewater. The carbon dioxide is emitted into the atmosphere, and the wastewater is connected to the evaporation separator to separate the organic particles in the wastewater through evaporation.

[0101] Furthermore, the wastewater discharge pipe of the separator is connected to a second cyclone separator for gas-liquid separation;

[0102] The gas separation port of the second cyclone separator is connected to the atmosphere;

[0103] The liquid separation port of the second cyclone separator is connected to the black water tank.

[0104] In the above design, the separator separates the tiny particles in the water. The water, through impact and centrifugal separation, forms a water mist that is discharged from the wastewater discharge pipe. The second cyclone separator separates the water from the exhaust gas in the water mist; the exhaust gas is discharged into the atmosphere, while the water is connected to the black water tank.

[0105] This invention uses a pulverizing and filtering system to pulverize and mix fecal waste in the black water tank. By using a fluid pump with pulverizing function, as well as a jet pump and a mixer, the solids in the feces are fully pulverized to improve the efficiency of water recycling and the efficiency of harmless treatment of solids in the electromagnetic heating oxidation furnace.

[0106] The electromagnetic heating oxidation furnace is equipped with a stirring device. Through heating and stirring, ammonia, methane, hydrogen sulfide, and hydrogen are separated from fecal waste. After oxidation and combustion with pure oxygen, the beneficial effects are that harmful gases are removed, and the heat generated by combustion can sustain the oxidation process of ammonia, saving electricity and reducing the cost of treating feces.

[0107] After being oxidized in an electromagnetic heating oxidation furnace, the fecal waste residue is fed into an ultrasonic reactor. The cavitation and mechanical effects of ultrasound degrade and oxidize the organic particles, releasing carbon dioxide. The ultrasonically treated residue is then sent to an evaporation reactor for dehydration, producing waste residue and steam. The waste residue settles in a drying tank for harmless recycling. Organic particles settled at the bottom of the wastewater are then fed into a separator to separate fine particles. The separated particles are returned to the evaporation separator for carbonization and drying. The separated wastewater then undergoes gas-liquid separation in a cyclone separator. The wastewater after gas separation is recycled to a black water tank. The beneficial effect is that by recovering water resources from fecal waste, water waste is reduced, resulting in certain social and economic benefits. Attached Figure Description

[0108] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0109] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0110] Figure 2 This is a cross-sectional schematic diagram of the separator of this utility model.

[0111] Symbol explanation:

[0112] 1. Shell; 2. Upper end cover; 3. Lower end cover; 4. Drive motor; 5. Wastewater inlet pipe; 6. Wastewater outlet pipe; 7. Air inlet; 8. Guide tube; 9. Material cylinder; 10. Turntable. Detailed Implementation

[0113] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0114] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0115] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0116] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0117] Reference Figure 1 As shown, the composite ammonia decomposition system includes a black water tank, as well as a pulverizing and filtering system, a heating and oxidizing decomposition system, and an evaporation and desiccation system.

[0118] The black water tank is positioned below the heating oxidation decomposition system and the evaporation dehydration system.

[0119] The pulverizing and filtration system includes a pulverizing device for pulverizing fecal waste and a filtration device for solid-liquid separation.

[0120] The heating oxidation decomposition system includes a heating furnace;

[0121] The evaporation and desiccation system includes an evaporation separator, which is equipped with an evaporator and a separation chamber, and the separation chamber is equipped with a drying tank;

[0122] The black water tank is connected in sequence to the pulverizing and filtering system, the heating and oxidation decomposition system, and the evaporation and desiccation system, forming a pathway for the treatment of fecal waste in the black water tank.

[0123] It also includes a water treatment and recycling system, which includes a pre-filter, a post-filter, an RO membrane filter, and a greywater tank.

[0124] The evaporator includes a steam outlet for outputting water vapor;

[0125] The steam outlet of the evaporator passes through a heat exchanger and is then connected in sequence through a pipeline to a pre-filter, a post-filter, an RO membrane filter, and a medium-water tank, forming a filtration path for steam condensate.

[0126] The pre-filter uses PP cotton with a filtration accuracy of 50-100 microns as the filter element.

[0127] The post-filtration device uses PP cotton with a filtration accuracy of 5-15 microns as the filter element.

[0128] The RO membrane filter is equipped with a filtered water outlet and a wastewater outlet. The filtered water outlet pipe is connected to a medium water tank, and the wastewater outlet pipe is connected to a black water tank.

[0129] Feces are mainly composed of three-quarters water and one-quarter solids. The solids include organic matter, inorganic matter, fat, undigested fiber, digestive fluid residue, sloughed cells and bacteria, as well as small amounts of combustible gases such as methane and hydrogen produced in the digestive system.

[0130] In this embodiment, the function of the pulverizing and filtering system is to pulverize and filter the solid portion of the feces. After processing by the pulverizing and filtering system, the fecal waste is divided into two parts: filter residue and filtrate. The purpose of pulverizing the feces is twofold: firstly, to more efficiently release gases such as ammonia, methane, hydrogen, and hydrogen sulfide contained in the feces into the heating and oxidizing decomposition system; and secondly, to recover more moisture.

[0131] The filter residue after processing by the pulverizing and filtering system is a mixture of solid matter and water. This mixture is heated in a heating and oxidizing decomposition system. During heating, ammonia, methane, hydrogen, and hydrogen sulfide are released from the mixture. Methane, hydrogen sulfide, and oxygen undergo a vigorous combustion oxidation reaction, releasing a large amount of heat. Ammonia and oxygen, under the influence of the heat generated during the combustion of methane, hydrogen sulfide, and hydrogen sulfide, undergo an oxidation reaction to produce nitrogen and water. After passing through the heating and oxidizing decomposition system, harmful gases in the fecal waste are rendered harmless. The heat released from the combustion reaction of methane, hydrogen sulfide, and oxygen sustains the ammonia oxidation process, saving on electricity consumption.

[0132] After the heating and oxidation decomposition system removes harmful gases from the feces and sewage, insoluble solids remain. The evaporation and desiccation system separates these insoluble solids by evaporation. The separated solid particles are carbonized, and the carbonized material is precipitated in the drying tank for harmless recycling.

[0133] In this embodiment, the black water tank is positioned lower than the heating oxidation decomposition system, the evaporation dehydration system, and the ammonia pyrolysis system. The advantage of this is that wastewater that needs to be returned to the black water tank can flow back to the black water tank by gravity without consuming additional energy, thus saving costs.

[0134] Furthermore, the pulverizing device employs a fluid pump with pulverizing function, which also has the function of diverting fecal waste in the black water tank;

[0135] The filtration device uses a self-cleaning filter, which has an inlet for liquid, an outlet for filtrate, and an outlet for filter residue.

[0136] The black water tank pipe is connected to the inlet of the fluid pump, and the outlet of the fluid pump is connected to the inlet of the self-cleaning filter, forming a system for crushing and filtering fecal waste.

[0137] The heating furnace of the heating oxidation decomposition system is an electromagnetic heating oxidation furnace, which includes an oxygen inlet for inputting pure oxygen, a material inlet for inputting filter residue, and a residue discharge outlet for discharging residue.

[0138] The slag discharge port of the self-cleaning filter is connected to the material conveying port of the electromagnetic heating oxidation furnace;

[0139] The drain pipe of the self-cleaning filter is connected to an electrochemical reactor;

[0140] The electrochemical reactor includes a container for holding filtrate, and positive and negative electrodes are arranged inside the container, which are respectively connected to the positive and negative terminals of a power source.

[0141] The electrochemical reactor pipeline is connected to the feed inlet of the electromagnetic heating oxidation furnace;

[0142] The evaporation separator includes a residue inlet for inputting residue;

[0143] The residue discharge port of the electromagnetic heating oxidation furnace is connected to the residue feed port of the evaporation separator.

[0144] In this embodiment, the pulverizing and filtering system is equipped with a fluid pump for pulverizing organic solids in feces. The fluid pump is a centrifugal pulverizing pump, which is equipped with a pulverizing mechanism that can pulverize organic solids when pumping them. After pulverization, the solids are filtered through a filter to form filter residue and filtrate.

[0145] The filter is a self-cleaning filter, which can maintain its filtration capacity for a long time.

[0146] In this embodiment, the heating oxidation decomposition system includes an electromagnetic heating oxidation furnace. The furnace heats the filter residue, and the organic matter in the fecal waste releases ammonia, methane, hydrogen sulfide, and a small amount of hydrogen under heating conditions. Pure oxygen is introduced by opening the oxygen supply valve. The pure oxygen reacts with methane, hydrogen, and hydrogen sulfide in the following oxidation reactions:

[0147] Pure oxygen and methane undergo the following chemical reaction:

[0148] CH4 + 2O2 → CO2 + 2H2O + Heat

[0149] Pure oxygen and hydrogen undergo the following chemical reaction:

[0150] 2H₂ + O₂ → 2H₂O + Heat

[0151] Pure oxygen and hydrogen sulfide undergo the following chemical reaction:

[0152] 2H₂S + 3O₂ → 2H₂O + 2SO₂

[0153] In the above process, the oxidation reaction of pure oxygen and ammonia requires heat, while the combustion reaction of pure oxygen with methane, hydrogen, and hydrogen sulfide generates a large amount of heat. The heat generated can sustainably maintain the heat required for ammonia oxidation, reducing the energy consumption of the electromagnetic heating oxidation furnace.

[0154] Pure oxygen and ammonia undergo the following oxidation reaction:

[0155] 4NH3 + 3O2 + heat → 2N2 + 6H2O

[0156] In this embodiment, the remaining residue after oxidative heating and decomposition is sent to an evaporator for evaporation separation. The evaporator is an existing technology. The residue evaporates water in the evaporator to form steam and waste residue. The waste residue settles in a drying tank inside the evaporator reactor and is then recycled after harmless treatment.

[0157] In this embodiment, the electrochemical reactor is a device that uses electrochemical technology to treat wastewater. It transforms and removes pollutants in water through electrochemical reactions on electrodes, and oxidizes organic matter into low-molecular-weight organic matter or directly oxidizes it into CO2 and H2O for discharge through the action of electric current.

[0158] In this embodiment, the steam output from the evaporator separator forms condensate after passing through a heat exchanger. The condensate is then treated by a water treatment and recovery system to reach reusable water quality. Its beneficial effect is reducing water waste and thus providing certain social benefits.

[0159] In this embodiment, the filtration accuracy is improved step by step through the pre-filter, post-filter, and RO membrane filter. Large solid particles are intercepted in the pre-filter and post-filter, while particles smaller than 5 microns are filtered by the RO membrane. The advantage is that the RO membrane has high filtration accuracy, but the operating cost is also high. By setting up the pre-filter and post-filter, the filtration burden on the RO membrane can be reduced, the service life of the RO membrane can be extended, the operating cost can be reduced, and expenses can be saved.

[0160] Furthermore, between the fluid pump and the self-cleaning filter, there is also a jet pump and a pipeline mixer, and the black water tank is connected to the fluid pump, jet pump, pipeline mixer and self-cleaning filter in sequence through pipelines;

[0161] A ball valve is installed between the pipeline mixer and the self-cleaning filter as a filter ball valve;

[0162] Another pipe is installed on the pipe between the pipe mixer and the filter ball valve as a return pipe connected to the black water tank. A flow valve is installed on the return pipe as a return valve.

[0163] In this embodiment, fecal matter is first initially pulverized in a fluid pump, then further pulverized by a jet pump, mixed in a pipeline mixer to form a suspension, and finally filtered in a filter to form filtrate and filter residue.

[0164] The filtrate contains a small amount of organic pollutants and is connected to the water treatment and recovery system through a pipeline. The filter residue is connected to the heating and oxidation decomposition system through a pipeline equipped with an electrically controlled valve.

[0165] Jet pumps are an existing technology that converts high-speed fluid into a high-speed jet, generating special physical effects such as negative pressure, thrust, and shear force, thereby further pulverizing fecal matter.

[0166] Pipe mixers are also existing technology used to mix fecal matter into a suspension.

[0167] Adding a jet pump and a pipeline mixer further pulverizes the fecal matter. The beneficial effect is that the fecal matter is pulverized into smaller pieces, which improves the efficiency of water recovery and facilitates the release of more combustible gases in the heating and oxidizing decomposition system, thereby improving the efficiency of fecal matter treatment.

[0168] In this embodiment, the filter valve is closed and the return valve is opened. The fecal waste passes through the pipeline in sequence through the black water tank, the fluid pump, the jet pump, the pipeline mixer, and back to the black water tank, where it undergoes a crushing, mixing, and circulation process.

[0169] Circulating fecal waste between the black water tank and the pulverizing and filtration system can further improve the degree of pulverization. Its beneficial effects are to improve the efficiency of water recovery and the degradation efficiency of solids in fecal waste.

[0170] Furthermore, the electromagnetic heating oxidation furnace includes a furnace body, and a stirring device is provided at the bottom of the furnace body. The stirring device is connected to a power motor.

[0171] A row of overflow outlets is provided on the upper part of the furnace body, and the overflow outlet pipes are connected to the black water tank;

[0172] Electromagnetic induction windings are evenly distributed around the outside of the furnace body;

[0173] It also includes an electrolytic oxygen generator, which has an oxygen output port, and the oxygen output port pipe is connected to the oxygen supply port of the electromagnetic heating oxidation furnace.

[0174] In this embodiment, a stirring device is provided at the bottom of the electromagnetic heating oxidation furnace. The stirring device is driven by a power motor. Under the stirring action of the power motor, combustible gases, including methane, hydrogen, hydrogen sulfide and ammonia, in the fecal waste can be released from the fecal waste in a high-efficiency manner and combined with oxygen produced by the electrolytic oxygen generator. Methane, hydrogen and hydrogen sulfide undergo a combustion reaction. The beneficial effect is that, on the one hand, these environmentally harmful gases are consumed by combustion, and on the other hand, the heat generated by combustion can sustainably maintain the oxidation process of ammonia and oxygen, saving electricity consumption.

[0175] Furthermore, the evaporation and desiccation system also includes an ultrasonic reactor that uses ultrasound to degrade and oxidize organic matter in wastewater, and a separator that separates liquids and solids.

[0176] The ultrasonic reactor includes a wastewater inlet and a wastewater outlet;

[0177] The separator includes a wastewater inlet pipe 5 and a solids discharge outlet;

[0178] The evaporation separator includes an outlet for discharging wastewater, which is located at the bottom of the wastewater.

[0179] The feed inlet pipe of the electromagnetic heating oxidation furnace is connected to the wastewater inlet of the ultrasonic reactor;

[0180] The wastewater discharge pipe of the ultrasonic reactor is connected to the residue feed port of the evaporator separator;

[0181] The outlet pipe of the evaporator is connected to the wastewater inlet pipe 5 of the separator;

[0182] The solid discharge port of the separator is connected to the wastewater inlet of the evaporation separator.

[0183] In this embodiment, the evaporation and dehydration system also includes an ultrasonic reactor and a separator. The beneficial effect is that the ultrasonic reactor degrades and oxidizes the organic matter in the wastewater through the cavitation effect and mechanical effect of ultrasound, forming carbon dioxide and water, thereby reducing the organic solid matter in the wastewater.

[0184] In this embodiment, the wastewater from the evaporator separator contains organic particulate matter sedimented at the bottom. The wastewater discharged from the evaporator separator also contains these organic particles. The separator separates solid matter from the wastewater, and the solid matter is returned to the evaporator separator for carbonization and drying, achieving harmless recycling. The wastewater is directly discharged into the black water tank. Its beneficial effects include reducing the moisture content within the evaporator separator, saving the electrical energy required for evaporation, and thus achieving social benefits of energy conservation and emission reduction.

[0185] Furthermore, the ultrasonic reactor includes an ultrasonic cavity;

[0186] A spray device is installed at the upper part of the ultrasonic cavity;

[0187] An ultrasonic transducer is fixedly connected to the lower part of the ultrasonic cavity.

[0188] The ultrasonic reactor is also equipped with a water pump. The pump inlet is located at the bottom of the ultrasonic cavity, and the pump outlet is connected to a spray device.

[0189] In this embodiment, the wastewater in the ultrasonic reactor is circulated and sprayed through a water pump. The beneficial effect is that the spraying device can improve the fusion of water and oxygen and improve the oxidation efficiency of organic matter.

[0190] Furthermore, the separator includes a centrifugal cutter;

[0191] Reference Figure 2 As shown, the centrifugal cutter includes a housing 1;

[0192] The upper end of the shell 1 is connected to the upper end cover 2. The upper end cover 2 is provided with a wastewater inlet pipe 5 and a wastewater outlet pipe 6 in the middle.

[0193] The lower end of the shell 1 is connected to the lower end cover 3, and the lower end cover 3 is provided with a solid particulate matter outlet. The solid particulate matter outlet pipe is connected to the evaporator separator.

[0194] An air inlet 7 is provided on the lower side wall of the housing 1, and the air inlet 7 enters tangentially along the inner wall of the housing 1.

[0195] Air inlet 7 connects to a hair dryer;

[0196] A drive motor 4 is also connected to the middle of the lower end cover 3. The rotating shaft of the drive motor 4 passes through the lower end cover 3 and extends into the housing 1. A cutting disc mechanism is connected to the rotating shaft.

[0197] The cutting disc mechanism includes a turntable 10 and a material cylinder 9;

[0198] Turntable 10 is connected to the rotating shaft and is parallel to the upper cover 2. The center of turntable 10 coincides with the center of upper cover 2.

[0199] The material cylinder 9 is located on the side of the turntable 10 facing the upper cover 2;

[0200] The material cylinder 9 includes concentric cylinders evenly distributed and surrounded by metal plates;

[0201] The distance between the material cylinder 9 and the upper cover is 23-6mm;

[0202] On the side of the upper cover 2 facing the turntable 10, there are concentric cylinders formed by metal plates, which are called guide cylinders 8. The guide cylinders 8 are 3-6 mm away from the turntable 10.

[0203] Starting from the center and moving outwards, the material cylinder 9 and the guide cylinder 8 are arranged in a concentric, overlapping pattern.

[0204] In this embodiment, a rotating disc 10 driven by a drive motor 4 and a material cylinder 9 are installed inside the shell 1 of the separator, forming a cutting disc mechanism. An air inlet 7 is also provided inside the shell 1, which is connected to a blower, thereby introducing a high-speed airflow into the shell 1. Under the dual action of the high-speed airflow and the high-speed rotating cutting disc mechanism, the wastewater in the separator impacts the material cylinder 9. Under centrifugal force, the tiny particles in the water are separated. The tiny particles are connected to the evaporation separator through the solid particle output pipe, where they are carbonized and dried, and precipitated in the drying tank.

[0205] Furthermore, a first cyclone separator for gas-liquid separation is also included between the wastewater discharge port of the ultrasonic reactor and the residue feed port of the evaporation separator;

[0206] The gas separation port of the first cyclone separator is connected to the atmosphere;

[0207] The liquid separation port of the first cyclone separator is connected to the residue feed port of the evaporator separator.

[0208] In this embodiment, the ultrasonic reactor degrades and oxidizes organic matter to produce carbon dioxide. The beneficial effect of the first cyclone separator is that it separates carbon dioxide and wastewater. The carbon dioxide is emitted into the atmosphere, and the wastewater is connected to the evaporation separator to separate the organic particles in the wastewater through evaporation.

[0209] Furthermore, the wastewater discharge pipe 6 of the separator is connected to a second cyclone separator for gas-liquid separation;

[0210] The gas separation port of the second cyclone separator is connected to the atmosphere;

[0211] The liquid separation port of the second cyclone separator is connected to the black water tank.

[0212] In this embodiment, the separator separates the tiny particles in the water. The water, under the action of impact and centrifugal separation, forms a water mist that is discharged from the wastewater discharge pipe 6. The second cyclone separator separates the water in the water mist from the exhaust gas; the exhaust gas is discharged into the atmosphere, while the water is connected to the black water tank.

[0213] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to implementing the present invention.

[0214] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0215] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A combined ammonia decomposition system comprising a black water tank, characterized by, The system further comprises a crushing and filtering system, a heating and oxidizing decomposition system, and an evaporation and drying system; The black water tank is positioned lower than the heating and oxidizing decomposition system and the evaporation and drying system; The crushing and filtering system comprises a crushing device for crushing the fecal waste and a filtering device for separating solid and liquid; The heating and oxidizing decomposition system comprises a heating furnace; The evaporation and drying system comprises an evaporation separator provided with an evaporator and a separation chamber provided with a drying barrel; The black water tank is connected to the crushing and filtering system, the heating and oxidizing decomposition system, and the evaporation and drying system in sequence by pipelines to form a passage for treating the fecal waste in the black water tank; The system further comprises a water treatment and recovery system comprising a pre-filtering device, a post-filtering device, an RO membrane filter, and a reclaimed water tank; The evaporation separator comprises a steam outlet for outputting water vapor; The steam outlet of the evaporation separator is connected to the pre-filtering device, the post-filtering device, the RO membrane filter, and the reclaimed water tank in sequence by pipelines through a heat exchanger to form a filtering passage for condensate water; The pre-filtering device adopts a filter core made of PP cotton with a filtering precision of 50-100 microns; The post-filtering device adopts a filter core made of PP cotton with a filtering precision of 5-15 microns; The RO membrane filter is provided with a filtered water outlet connected to the reclaimed water tank and a waste water outlet connected to the black water tank.

2. The integrated ammonia decomposition system of claim 1, wherein: The crushing device adopts a fluid pump with a crushing function, which also has a drainage function for the fecal waste in the black water tank; The filtering device adopts a self-cleaning filter having a liquid inlet, a liquid outlet for outputting filtered liquid, and a residue outlet for outputting filtered residue; The black water tank is connected to the inlet of the fluid pump, and the outlet of the fluid pump is connected to the liquid inlet of the self-cleaning filter to form a system for crushing and filtering the fecal waste; The heating furnace of the heating and oxidizing decomposition system adopts an electromagnetic heating and oxidizing furnace comprising an oxygen inlet, a material inlet, and a residue discharge outlet; The residue outlet of the self-cleaning filter is connected to the material inlet of the electromagnetic heating and oxidizing furnace by a pipeline; The liquid outlet of the self-cleaning filter is connected to an electrochemical reactor by a pipeline; The electrochemical reactor comprises a container containing filtered liquid, and positive and negative electrodes arranged in the container and connected to the positive and negative electrodes of a power supply, respectively; The electrochemical reactor is connected to the material inlet of the electromagnetic heating and oxidizing furnace by a pipeline; The evaporation separator comprises a residue inlet for inputting residue; The residue discharge outlet of the electromagnetic heating and oxidizing furnace is connected to the residue inlet of the evaporation separator by a pipeline.

3. The integrated ammonia decomposition system of claim 2, wherein, Between the fluid pump and the self-cleaning filter, there are a jet pump and a pipeline mixer, and the black water tank is connected to the fluid pump, the jet pump, the pipeline mixer, and the self-cleaning filter in sequence by pipelines; A ball valve is arranged between the pipeline mixer and the self-cleaning filter as a filtering ball valve; Another pipeline is arranged between the pipeline mixer and the filtering ball valve as a backflow pipeline connected to the black water tank, and a flow valve is arranged on the backflow pipeline as a backflow valve.

4. The integrated ammonia decomposition system of claim 2, wherein, The electromagnetic heating and oxidizing furnace comprises a furnace body provided with a stirring device at the bottom and connected to a power motor; The furnace body is provided with an overflow outlet connected to the black water tank by a pipeline. The electromagnetic induction winding is arranged outside the furnace body and is evenly arranged; The electrolytic oxygen generator has an oxygen output port, and the oxygen output port is connected to the oxygen inlet of the electromagnetic heating oxidation furnace through a pipeline.

5. The integrated ammonia decomposition system of claim 2, wherein, The evaporation and drying system further comprises an ultrasonic reactor for degrading and oxidizing organic matter in the wastewater, and a separator for separating liquid and solid; The ultrasonic reactor comprises a wastewater inlet and a wastewater outlet; The separator comprises a wastewater input pipe and a solid outlet; The evaporation separator comprises a water outlet for discharging wastewater, and the water outlet is arranged at the bottom of the wastewater; The wastewater inlet of the ultrasonic reactor is connected to the material inlet of the electromagnetic heating oxidation furnace through a pipeline; The wastewater outlet of the ultrasonic reactor is connected to the residue inlet of the evaporation separator through a pipeline; The water outlet of the evaporation separator is connected to the wastewater input pipe of the separator through a pipeline; The solid outlet of the separator is connected to the wastewater input port of the evaporation separator.

6. The composite ammonia decomposition system according to claim 5, wherein: The ultrasonic reactor comprises an ultrasonic cavity; A spraying device is arranged at the upper part of the ultrasonic cavity; An ultrasonic transducer is fixedly connected to the lower part of the ultrasonic cavity; The ultrasonic reactor further comprises a water pump, the pump inlet of the water pump is arranged at the bottom of the ultrasonic cavity, and the pump outlet of the water pump is connected to the spraying device.

7. The composite ammonia decomposition system according to claim 5, wherein: The separator comprises a centrifugal cutter; The centrifugal cutter comprises a shell; An upper end cover is connected to the upper end of the shell, the middle part of the upper end cover is provided with a wastewater input pipe, and a wastewater discharge pipe is further arranged; A lower end cover is connected to the lower end of the shell, a solid particle outlet is arranged on the lower end cover, and the solid particle outlet is connected to the evaporation separator through a pipeline; An air inlet is arranged on the lower part of the side wall of the shell, and the air inlet is tangentially arranged along the inner wall of the shell; The air inlet is connected to a blower; A driving motor is further connected to the middle part of the lower end cover, the rotating shaft of the driving motor extends into the shell through the lower end cover, and a cutting disc mechanism is connected to the rotating shaft; The cutting disc mechanism comprises a rotating disc and a material cylinder; The rotating disc is connected to the rotating shaft and is parallel to the upper end cover, and the center of the rotating disc coincides with the center of the upper end cover; The material cylinder is arranged on the side of the rotating disc facing the upper end cover; The material cylinder comprises concentric cylinders formed by metal plates and arranged evenly; The distance between the material cylinder and the upper end cover is 3-6 mm; The side of the upper end cover facing the rotating disc is provided with concentric cylinders formed by metal plates, which are called guide cylinders, and the distance between the guide cylinders and the rotating disc is 3-6 mm; From the center outward, the material cylinder, the guide cylinder, and the material cylinder and the guide cylinder are arranged concentrically.

8. The integrated ammonia decomposition system of claim 5, wherein, A first cyclone separator for gas-liquid separation is further arranged between the wastewater outlet of the ultrasonic reactor and the residue inlet of the evaporation separator; The gas separation port of the first cyclone separator is connected to the atmosphere; The liquid separation port of the first cyclone separator is connected to the residue inlet of the evaporation separator.

9. The integrated ammonia decomposition system of claim 1, wherein, Another second cyclone separator for gas-liquid separation is connected to the wastewater discharge pipe of the separator; The gas separation port of the second cyclone separator is connected to the atmosphere; The liquid separation port of the second cyclone separator is connected to the black water tank.

Images