Fecal sewage treatment system

Abstract

The utility model provides a fecal sewage treatment system which comprises an aeration unit which is configured to perform aeration treatment on fecal sewage; the evaporation unit is arranged on the downstream side of the aeration unit, the evaporation unit comprises an evaporation kettle, an evaporation assembly and a foam detection assembly, the evaporation kettle is communicated with the aeration unit through a pipeline, the evaporation kettle is provided with a first discharge port and a first steam outlet, the first discharge port is used for discharging evaporated materials, the evaporation assembly is arranged in the evaporation kettle, and the foam detection assembly is arranged in the evaporation kettle. The foam detection assembly is used for detecting the quantity of bubbles in the evaporation kettle; and the moisture collection unit is communicated with the first steam outlet and is configured to condense and store the steam discharged by the evaporation unit. The fecal sewage treatment system disclosed by the utility model can improve the fecal sewage treatment effect and the utilization rate of water resources, and is suitable for treating fecal sewage with higher concentration and difficulty in treatment. In the evaporation process, the influence of foam on the evaporation effect can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of excrement treatment, in particular to an excrement sewage treatment system. Background Art

[0002] With the development of urbanization and industrialization, vacuum feces collection systems are widely used in mobile cabin toilets, public toilets, trains, airplanes and other places, generating a large amount of fecal sewage. Since fecal sewage contains a large amount of organic matter, pathogens and odorous substances, efficient sewage treatment technology is required to treat it.

[0003] However, the existing methods for treating fecal and sewage have problems such as low treatment efficiency, high energy consumption, large pollutant emissions, and large volume and space, which can easily cause secondary pollution to the surrounding environment. The fecal and sewage concentration in the vacuum feces collection system is higher and more difficult to treat. Utility Model Content

[0004] In view of the above problems, the utility model provides a feces and sewage treatment system, which can improve the treatment effect of feces and sewage and the utilization rate of water resources, and reduce the pollution of feces and sewage to the environment.

[0005] The utility model provides a feces and sewage treatment system, comprising: an aeration unit, which is configured to perform aeration treatment on feces and sewage; an evaporation unit, which is arranged at the downstream side of the aeration unit, and the evaporation unit comprises: an evaporation kettle, an evaporation component and a foam detection component, the evaporation kettle is connected with the aeration unit through a pipeline, the evaporation kettle is provided with a first discharge port and a first steam outlet, the first discharge port is used to discharge evaporated materials, the evaporation component is arranged in the evaporation kettle to evaporate the feces and sewage, and the foam detection component is used to detect the amount of bubbles in the evaporation kettle; a moisture collection unit, which is connected with the first steam outlet and is configured to condense and store the steam discharged from the evaporation unit.

[0006] The fecal sewage treatment system of the utility model includes an aeration unit, an evaporation unit and a moisture collection unit. The fecal sewage is aerated by the aeration unit to reduce the concentration of bacteria and microorganisms and odor in the fecal sewage, reduce large-particle solids, and increase the fluidity of the fecal sewage, so as to facilitate subsequent discharge into the evaporation unit and the drying unit for treatment; the evaporation unit can remove most of the water in the fecal sewage to form a fecal sewage concentrate; the moisture collection unit can recollect and utilize most of the water separated from the fecal sewage, which is conducive to reducing water resource waste and reducing treatment costs. Through the mutual cooperation of the aeration unit, the evaporation unit and the moisture collection unit, the treatment effect of fecal sewage and the utilization rate of water resources can be improved, the pollution of fecal sewage to the environment can be reduced, and it is suitable for the treatment of fecal sewage with higher concentration and treatment difficulty, and it is more practical. Moreover, during the evaporation process, the foam in the evaporator can be detected by the foam detection component, so that when a large amount of foam is generated, timely measures can be taken to eliminate the foam to avoid the foam affecting the evaporation effect.

[0007] In some embodiments, the foam detection assembly includes: an observation window, which is arranged on the side wall of the evaporating kettle, and the observation window is used to observe the amount of bubbles in the evaporating kettle.

[0008] In some embodiments, the foam detection component further includes: a foam sensor, which is disposed in the inner cavity of the evaporating kettle, and the foam sensor is used to detect the amount of bubbles in the evaporating kettle.

[0009] In some embodiments, the fecal sewage treatment system further includes: a control valve assembly, the control valve assembly including: a first main feed valve and a first micro feed valve, the first main feed valve and the first micro feed valve are arranged in parallel with the valve on the pipeline between the evaporator and the aeration unit, the first main feed valve controls the feed on and off of the evaporator unit, and the first micro feed valve is configured to add material to the evaporator during the operation of the evaporator unit.

[0010] In some embodiments, the fecal sewage treatment system also includes: a control device, which is communicated with the foam detection component and the first micro-feed valve respectively to adjust the operating conditions of the first micro-feed valve according to the detection results of the foam detection component, and the operating conditions include: the opening and closing state of the first micro-feed valve, the opening degree of the first micro-feed valve, and the opening time.

[0011] In some embodiments, the evaporator is further provided with a defoaming medium inlet, which is used to introduce defoaming liquid. The control valve assembly includes: a defoaming valve, which is provided at the defoaming medium inlet to control the opening and closing of the defoaming medium inlet.

[0012] In some embodiments, the evaporation unit is provided with a first air vent, and the control valve assembly includes a first air vent valve, which is provided at the first air vent to open or close the first air vent.

[0013] In some embodiments, the evaporation unit further comprises a negative pressure component, and the negative pressure component is configured to draw negative pressure to the evaporation kettle.

[0014] In some embodiments, the evaporating kettle is also provided with an exhaust port, and the negative pressure component includes: a first vacuum valve, which is openably and closably provided at the exhaust port; an air ejector, which is connected to the moisture collection unit through a pipeline, and the air ejector is configured to extract air from the evaporating kettle through the exhaust port when working.

[0015] In some embodiments, the aeration unit includes: an aeration container for storing fecal sewage; an aeration pipeline, one end of which is connected to an external air supply device, and the other end of which extends below the fecal sewage liquid level in the aeration container to expose a gas medium into the fecal sewage, wherein the gas medium includes ozone.

[0016] In some embodiments, the moisture collection unit includes: a steam condensation module, including: a steam condensation tank and a first cooling coil, the steam condensation tank is connected to the evaporation unit, the first cooling coil is arranged in the steam condensation tank, a condensation heat exchange medium flows in the first cooling coil, and the first cooling coil is configured to cool the steam entering the steam condensation tank into condensed water; a water storage module, including a water storage container, the water storage container is connected to the steam condensation tank, and the steam condensation tank discharges the condensed water into the water storage container for storage.

[0017] In some embodiments, the water storage module also includes: a centrifugal pump and a water ejector. The water storage container, the centrifugal pump and the water ejector are connected in sequence through pipelines to form a circulation loop. The centrifugal pump drives the water in the water storage container to circulate in the circulation loop. The water ejector is also connected to the steam condensation tank. When the water ejector is in operation, the condensed water in the steam condensation tank is pumped into the circulation loop.

[0018] In some embodiments, the fecal sewage treatment system further includes: a heat pump unit, which is connected to the evaporation unit and the moisture collection unit respectively, and is configured to provide evaporative heat exchange medium to the evaporation unit and condensed heat exchange medium to the moisture collection unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of a feces and sewage treatment system according to an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of a heat pump unit according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure of an evaporation unit according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic structural diagram of a drying unit according to an embodiment of the utility model;

[0024] Figure 5 This is a process flow chart of the feces and sewage treatment process according to an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 100-Fecal sewage treatment system;

[0027] 1- Aeration unit;

[0028] 101-aeration container; 102-aeration pipeline;

[0029] 2- Evaporation unit;

[0030] 201-evaporation kettle; 202-first evaporation coil; 203-air extraction port; 204-first feed port; 205-first discharge port; 207-observation window; 208-first air-breaking port; 209-defoaming medium inlet; 210-first vacuum valve; 211-air ejector; 212-liquid level sensor; 213-foam sensor;

[0031] 3- Drying unit;

[0032] 301-drying box; 302-heating element; 303-heat conduction chamber; 304-stirring driving element; 305-transmission shaft; 306-stirring element; 307-second air-breaking port; 308-electric diaphragm pump; 309-second pressure relief port; 310-second discharge port;

[0033] 4- Moisture collection unit;

[0034] 41-steam condenser; 42-first cooling coil; 43-water storage container; 431-water inlet; 432-drain outlet; 433-water outlet; 44-centrifugal pump; 45-water ejector; 46-second cooling coil;

[0035] 5- Heat pump unit;

[0036] 51-compressor; 52-first heat exchange coil; 53-first refrigerant storage tank; 54-second heat exchange coil; 55-third heat exchange coil;

[0037] 6-Control valve assembly;

[0038] 601-the first main feed valve; 602-the first micro-feed valve; 603-the manual micro-feed valve; 604-the defoaming valve; 605-the first air-breaking valve; 606-the first manual air-breaking valve; 607-the first discharge valve; 608-the second vacuum valve; 609-the water injection valve; 610-the drainage valve; 611-the second feed valve; 612-the second pressure relief valve; 613-the second discharge valve; 614-the second air-breaking valve. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0040] With the development of urbanization and industrialization, vacuum feces collection systems are widely used in mobile cabin toilets, public toilets, trains, airplanes and other places, generating a large amount of fecal sewage. Since fecal sewage contains a large amount of organic matter, pathogens and odorous substances, efficient sewage treatment technology is required to treat it. However, the existing fecal sewage treatment methods have problems such as low treatment efficiency, high energy consumption, large pollutant emissions, and large volume and space, which are easy to cause secondary pollution to the surrounding environment. The fecal sewage concentration of the vacuum feces collection system is higher and more difficult to treat.

[0041] In view of this, the utility model provides a fecal sewage treatment system and a fecal sewage treatment process, which can improve the treatment effect of fecal sewage and reduce the pollution of fecal sewage to the environment through the mutual cooperation of an aeration unit, an evaporation unit, and a drying unit. It is also suitable for the treatment of fecal sewage with higher concentration and treatment difficulty, which expands the scope of use and is more practical.

[0042] Combine the following Figure 1-Figure 5The feces and sewage treatment system 100 according to the first embodiment of the utility model is described.

[0043] The feces and sewage treatment system 100 of this embodiment can be installed in mobile cabin toilets, public toilets, trains, airplanes and other places. The feces and sewage treatment system 100 is used to treat feces and sewage.

[0044] The feces and sewage treatment system 100 may include: a feces collection unit. Among them, the feces collection unit may be a normal pressure feces collection unit or a vacuum feces collection unit. The feces collection unit may discharge the feces and sewage into a waste container, for example, the waste container may be the aeration container 101 of the aeration unit 1. It can be understood that for places connected to the water supply and drainage system, such as public toilets, the feces collection unit may be a normal pressure feces collection unit, and the feces collection unit may discharge the feces and sewage into the waste container by flushing water; for mobile cabin toilets, trains, airplanes and other scenes with limited flushing water, the feces collection unit is preferably a vacuum feces collection unit, at which the feces collection unit may discharge the feces and sewage into the waste container by combining a relatively high negative pressure with a small amount of flushing water, thereby reducing the water consumption for flushing, and accordingly, the concentration of the feces and sewage generated is relatively high.

[0045] Combination Figure 1 The fecal sewage treatment system 100 may include an aeration unit 1. The aeration unit 1 may be configured to perform aeration treatment on the fecal sewage. For example, the aeration unit 1 may introduce oxygen, ozone and other gases into the fecal sewage to increase the oxygen in the fecal sewage, promote microbial degradation of organic matter, reduce the concentration of bacterial microorganisms and odor in the fecal sewage, and reduce large particles of solid matter, increase the fluidity of the fecal sewage, and facilitate subsequent discharge into the evaporation unit 2 and the drying unit 3 for treatment.

[0046] Combination Figure 1 , the fecal sewage treatment system 100 may also include an evaporation unit 2. The evaporation unit 2 may be arranged on the downstream side of the aeration unit 1 and communicated with the aeration unit 1. The evaporation unit 2 is configured to perform evaporation treatment on the fecal sewage treated by the aeration unit 1. For example, after the aeration unit 1 completes the aeration treatment of the fecal sewage, the fecal sewage treated by the aeration can be discharged into the evaporation unit 2 for evaporation treatment. After the evaporation treatment, most of the water in the fecal sewage can be removed, for example, 75%-90% of the water can be removed. In addition, due to the evaporation treatment, the water in the fecal sewage can be discharged in the form of steam, so that it is convenient for the water collection unit 4 to collect and condense the steam, which is conducive to the recycling of water, reducing the waste of water resources and reducing the treatment cost.

[0047] Considering that the evaporation unit 2 cannot completely remove the water, the feces and sewage treatment system 100 of this embodiment may further include a drying unit 3. The drying unit 3 may be connected to the evaporation unit 2, and the drying unit 3 is configured to dry the material treated by the evaporation unit 2. For example, when the evaporation unit 2 removes most of the water in the feces and sewage after aeration treatment, a feces and sewage concentrate is formed, and then the concentrate can be discharged into the drying unit 3, and the drying unit 3 performs a drying treatment at a certain temperature to further evaporate the water in the concentrate to obtain a dried fluid material, and then the fluid material can be discharged into a waste residue storage box for resource utilization, such as as fertilizer, biofuel, etc.

[0048] It can be understood that, when the drying unit 3 is provided, the requirement for the water removed by the evaporation unit 2 can be reduced, so that the evaporation unit 2 can discharge the concentrated liquid after evaporation treatment into the drying unit 3 for further drying treatment; in other cases, the fecal sewage treatment system 100 may not be provided with a drying unit 3, and only use the evaporation unit 2 to remove most of the water and then utilize the feces as a resource, such as as fertilizer, and, when the drying unit 3 is not provided, the water removal rate in the evaporation unit 2 can be increased.

[0049] Since most of the water in the fecal sewage is removed in the form of steam in the evaporation unit 2, in order to avoid water waste and improve the utilization rate of water resources, the fecal sewage treatment system 100 in this embodiment may also include a water collection unit 4. The water collection unit 4 is connected to the evaporation unit 2, and the water collection unit 4 is configured to collect water evaporated by the evaporation unit 2, so that most of the water can be collected and reused, which is conducive to reducing water resource waste and reducing treatment costs.

[0050] Optionally, since the drying unit 3 can also remove part of the water in the concentrated liquid in the form of steam, the drying unit 3 can also be connected to the water collection unit 4 to collect the steam discharged from the drying unit 3, so as to further realize the collection and reuse of water. In addition, the drying unit 3 and the evaporation unit 2 share the water collection unit 4, which is conducive to simplifying the system structure, saving the space occupied by the system, and making the system easier to be arranged in places with limited installation space, such as airplanes, toilet mobile cabins, trains, etc.

[0051] The fecal sewage treatment system 100 of the embodiment of the utility model includes an aeration unit 1, an evaporation unit 2, a drying unit 3 and a moisture collection unit 4. The fecal sewage is aerated by the aeration unit 1 to reduce the concentration of bacteria and microorganisms and odor in the fecal sewage, reduce large particles of solid matter, and increase the fluidity of the fecal sewage, so as to facilitate subsequent discharge into the evaporation unit 2 and the drying unit 3 for treatment; the evaporation unit 2 can remove most of the water in the fecal sewage to form a fecal sewage concentrate; the drying unit 3 can further evaporate the water in the concentrate to obtain a dried fluid material, which can be recycled; the moisture collection unit 4 can recollect and utilize most of the water separated from the fecal sewage, which is beneficial to reduce the waste of water resources and reduce the treatment cost. Therefore, the feces and sewage treatment system 100 of this embodiment, through the mutual cooperation of the aeration unit 1, the evaporation unit 2, and the drying unit 3, can improve the treatment effect of feces and sewage, reduce the pollution of feces and sewage to the environment, and is suitable for the treatment of feces and sewage with higher concentration and treatment difficulty, thereby expanding the scope of use and being more practical.

[0052] Combination Figure 1 In some embodiments, the aeration unit 1 may include: an aeration container 101 and an aeration pipeline 102. The aeration container 101 may be a tank body, a box body or other structure made of metal parts. The aeration container 101 may be used to store fecal sewage and provide an aerated environment. The aeration container 101 may be connected to the feces collection unit through a pipeline so that the feces collection unit discharges the feces sewage into the aeration container 101. One end of the aeration pipeline 102 is connected to an external air supply device, and the other end extends below the feces sewage liquid level in the aeration container 101 to expose the gas medium to the feces sewage. In this way, the structure of the aeration unit 1 is relatively simple. The feces sewage is aerated through the aeration pipeline 102, so that the oxygen content in the feces sewage is increased, thereby eliminating the odor of the feces sewage, sterilizing, promoting the decomposition of organic matter, reducing large particles of solid matter, and increasing the fluidity of the feces sewage, which is conducive to the later discharge into the evaporation unit 2.

[0053] Furthermore, the gas medium includes ozone, so that the gas medium can dissolve in the sewage at a higher rate, increase the oxygen content in the fecal sewage, and help promote the decomposition of organic matter. Moreover, since ozone has extremely strong oxidizing and bactericidal properties, it helps to kill bacteria and other microorganisms in the fecal sewage, reduce the odor of the fecal sewage, and dilute the color.

[0054] Combination Figure 1 and Figure 3In some embodiments, the evaporation unit 2 may include an evaporation kettle 201 and an evaporation assembly. The evaporation kettle 201 is a container that can withstand a certain temperature and pressure and can provide a closed inner cavity. The evaporation kettle 201 is provided with a first feed port 204, a first discharge port 205 and a first steam outlet, wherein the first feed port 204 may be provided at the upper part of the side wall of the evaporation kettle 201 to ensure that the evaporation kettle 201 can process a sufficient amount of fecal sewage; the first discharge port 205 may be provided at the bottom of the evaporation kettle 201 to facilitate sufficient discharge after evaporation is completed to reduce residue; the first steam outlet may be provided at the top of the side wall or the top wall of the evaporation kettle 201 to facilitate the steam to automatically rise and be discharged from the first steam outlet.

[0055] Combination Figure 1 and Figure 3 , the first feed port 204 of the evaporator 201 can be connected to the aeration unit 1 through a pipeline, for example, the first feed port 204 is connected to the aeration container 101 through a pipeline, and the first discharge port 205 is used to discharge the evaporated material, for example, the first discharge port 205 can be connected to the drying unit 3, and the evaporated material can be discharged to the drying unit 3 through the first discharge port 205. The first steam outlet is connected to the moisture collection unit 4 to discharge the evaporated steam into the moisture collection unit 4. The evaporation component can provide evaporation heat for fecal sewage. The evaporation component is arranged in the evaporation pot 201. The heat of the evaporation component acts on the fecal sewage, so that the water in the fecal sewage evaporates and is discharged from the first steam outlet. In this way, the evaporation pot 201 of the evaporation unit 2 of this embodiment can provide an evaporation environment, the evaporation component can provide evaporation heat, and the overall structure is relatively simple and easy to implement.

[0056] The evaporation component may be a self-heating component, for example, the evaporation component may be an electric heating component; or, the evaporation component may constitute a heat exchange system with an external device, for example, the evaporation component serves as a hot end.

[0057] Optionally, a first temperature sensor may be provided in the evaporating kettle 201 for detecting the inner temperature of the evaporating kettle 201 . The control device may be connected to the first temperature sensor to control the operation state of the evaporating component according to the first temperature sensor.

[0058] In some embodiments, the evaporation unit 2 may further include a negative pressure component, which is configured to pump negative pressure to the evaporation kettle 201. In this way, when the evaporation unit 2 is working, a certain negative pressure is maintained in the evaporation kettle 201, which can reduce the boiling point of sewage and increase the evaporation rate, thereby increasing the processing speed of fecal sewage by the evaporation unit 2; moreover, it is conducive to the efficient circulation of flushing water, so that the fecal sewage treatment system 100 is more suitable for scenes with high fecal sewage concentration, such as trains, airplanes, mobile cabin toilets, etc. In addition, by adjusting the negative pressure value in the evaporation kettle 201 through the negative pressure component, the evaporation rate of fecal sewage can be conveniently regulated.

[0059] Of course, as an alternative embodiment, the evaporation unit 2 may not be provided with a negative pressure component. In this case, the evaporation kettle 201 is a positive pressure evaporation.

[0060] Combination Figure 1 and Figure 3 In some embodiments, the evaporating kettle 201 may also be provided with an air extraction port 203, and the negative pressure component may extract the air in the evaporating kettle 201 through the air extraction port 203 to keep the evaporating kettle 201 in a negative pressure environment. The negative pressure component may include a first vacuum valve 210 and an air ejector 211. The first vacuum valve 210 may be openably and closably provided at the air extraction port 203 to open or close the air extraction port 203. The air ejector 211 may be connected to the moisture collection unit 4 through a pipeline, and the air ejector 211 is configured to extract air from the evaporating kettle 201 through the air extraction port 203 when working. For example, when the evaporator 201 needs to be converted to a negative pressure state, the first vacuum valve 210 can be opened, and then the water collection unit 4 ejects the stored water from the air ejector 211. The water flows through the air ejector 211 at a high speed, and the high-speed fluid causes the air ejector 211 to produce a pressure drop, so that the gas in the evaporator 201 enters the air ejector 211 through the air suction port 203 and the first vacuum valve 210, and the inner cavity of the evaporator 201 can be converted to a negative pressure environment. In this way, the negative pressure component of this embodiment fully utilizes the water in the fecal sewage collected by the water collection unit 4 to form a high-speed jet to suck the air in the inner cavity of the evaporator 201, thereby increasing the function of the water collection unit 4, eliminating the need for a separate water supply device, and having a higher degree of integration.

[0061] Combination Figure 1 and Figure 3 Optionally, a first pressure sensor may be provided in the evaporating kettle 201, and the first pressure sensor is used to detect the pressure in the inner cavity of the evaporating kettle 201. The control device may be connected to the first pressure sensor to control the operating state of the negative pressure component according to the first pressure sensor.

[0062] Combination Figure 1In some embodiments, the fecal sewage treatment system 100 further includes: a control valve assembly 6, the control valve assembly 6 includes: a first main feed valve 601 and a first micro feed valve 602, the first main feed valve 601 and the first micro feed valve 602 are arranged in parallel on the pipeline between the evaporator 201 and the aeration unit 1, the first main feed valve 601 controls the feed on and off of the evaporator 2, and the first micro feed valve 602 is configured to add material to the evaporator 201 during the operation of the evaporator 2.

[0063] For example, each time the evaporator 201 is operated, since the evaporator 201 has completely discharged the fecal sewage after evaporation treatment in the previous evaporation step, at the beginning of the current evaporation step, the first main feed valve 601 can be opened, and the aeration container 101 discharges a set feed amount of aerated fecal sewage into the evaporator 201 through the pipeline where the first main feed valve 601 is located, and then the first main feed valve 601 is closed; during the evaporation process, as the water content in the fecal sewage gradually decreases, the liquid level in the evaporator 201 gradually decreases, and it is necessary to replenish fecal sewage into the evaporator 201. At this time, the first main feed valve 601 can be kept closed, and the first micro-feed valve 602 can be opened. The aeration container 101 replenishes fecal sewage to the evaporator 201 through the branch where the first micro-feed valve 602 is located for multiple times and in batches, so that the concentrated liquid evaporated in the evaporator 201 reaches the set discharge amount, and then is uniformly discharged into the drying unit 3 for further treatment.

[0064] In this way, the number of times that the evaporator 201 opens the first discharge port 205 to discharge materials to the drying unit 3 can be reduced, thereby improving the processing efficiency and wastewater treatment volume of a single evaporation step.

[0065] Combination Figure 1 In some possible embodiments, the first micro-feed valve 602 can be connected to the moisture collection unit 4 through a pipeline. In this way, after the evaporator 201 performs several evaporation steps, the moisture collection unit 4 can discharge clean water into the evaporator 201 through the first micro-feed valve 602, which can not only clean the inside of the evaporator 201, but also make full use of the recycled water, thereby reducing the operating cost of the system 100.

[0066] Optionally, a micro-feed manual valve 603 may be arranged in series on the branch where the first micro-feed valve 602 is located. The micro-feed manual valve 603 may be manually opened or closed by an operator. The micro-feed manual valve 603 may be in a normally open state and may only be manually closed or opened by an operator when the feces and sewage treatment system 100 needs to be inspected or otherwise needs to be shut down.

[0067] In some embodiments, the evaporation unit 2 also includes: a liquid level sensor 212, which can be arranged in the inner cavity of the evaporation pot 201, and the liquid level sensor 212 is used to detect the liquid level in the evaporation pot 201, so as to control the operating status of the first main feed valve 601, the first micro feed valve 602, the first discharge port 205 and other positions according to the detection result of the liquid level sensor 212.

[0068] Combination Figure 1 In some embodiments, the evaporation unit 2 may further include a foam detection component, which can be used to detect the amount of bubbles in the evaporation kettle 201. The fecal sewage evaporates in the evaporation kettle 201 in a negative pressure environment and at a certain temperature. As the moisture content decreases, more bubbles will be generated. Excessive bubbles will affect the discharge of steam and the evaporation effect. Therefore, in this embodiment, a foam detection component is also provided. The amount of bubbles in the evaporation kettle 201 is detected by the foam detection component, so that the operator can perform corresponding processing operations based on the detection structure and eliminate bubbles in time.

[0069] Combination Figure 1 and Figure 3 In some embodiments, the foam detection component may include an observation window 207, which is disposed on the side wall of the evaporating kettle 201. The operator may observe the amount of bubbles in the evaporating kettle 201 through the observation window 207 to determine the evaporation condition and take corresponding measures. Optionally, the height of the observation window 207 on the side wall of the evaporating kettle 201 may correspond to the set bubble level. When a large number of bubbles can be observed through the observation window 207, measures may be taken to defoam. Optionally, the height of the observation window 207 may be 1 / 2-4 / 5 of the height of the evaporating kettle 201. For example, the height of the observation window 207 may be 1 / 2, 2 / 3, 3 / 4 or 4 / 5 of the height of the evaporating kettle 201. Of course, the utility model does not limit this. The height of the observation window 207 may be reasonably set according to actual needs.

[0070] Combination Figure 1 and Figure 3 In other embodiments, the foam detection component may further include a foam sensor 213. Specifically, the foam sensor 213 is disposed in the inner cavity of the evaporating kettle 201, and the foam sensor 213 is used to detect the amount of bubbles in the evaporating kettle 201. For example, the foam sensor 213 can detect the height of the bubbles, thereby determining the amount of bubbles, and feed back the detection result to the control device so as to take treatment measures, thereby improving the degree of automation of the detection.

[0071] In some embodiments, the feces and sewage treatment system 100 further includes: a control device, which is respectively connected to the foam detection component and the first micro-feed valve 602 in communication, so as to adjust the operating conditions of the first micro-feed valve 602 according to the detection results of the foam detection component, and the operating conditions include: the opening and closing state of the first micro-feed valve 602, the opening degree of the first micro-feed valve 602, and the opening time. For example, during the evaporation process, as the water content in the feces and sewage continues to decrease, the feces and sewage gradually become thicker, and the number of bubbles gradually increases. When the foam sensor 213 detects that the bubbles exceed the upper limit of the bubble level, the detection result is fed back to the control device, and the control device opens the first micro-feed valve 602 to feed. The supplemented feces and sewage can dilute the concentration of feces and sewage in the evaporation kettle 201 to a certain extent, thereby reducing the amount of bubbles. In this way, the degree of automation of the defoaming operation of the evaporation unit 2 can be improved.

[0072] Combination Figure 1 and Figure 3 Optionally, the evaporating kettle 201 may also be provided with a defoaming medium inlet 209, which is provided on the side wall of the evaporating kettle 201, and is used to introduce defoaming liquid. The control valve assembly 6 may also include: a defoaming valve 604. The defoaming valve 604 is provided at the defoaming medium inlet 209 to control the opening and closing of the defoaming medium inlet 209. In this way, when the foam sensor 213 detects that the bubbles exceed the upper limit of the bubble liquid level, the detection result is fed back to the control device, and the control device can open the defoaming valve 604, or the defoaming valve 604 is opened manually to introduce defoaming liquid into the evaporating kettle 201 to achieve defoaming.

[0073] Combination Figure 1 and Figure 3 In some embodiments, a negative pressure component is provided in the evaporator 201. When negative pressure evaporation is performed, the evaporator 201 is also provided with a first air-breaking port 208. The control valve component 6 includes a first air-breaking valve 605. The first air-breaking valve 605 is provided at the first air-breaking port 208 to open or close the first air-breaking port 208. In this way, after the evaporation of the evaporator 201 is completed, the first air-breaking port 208 can be opened through the first air-breaking valve 605 to convert the inner cavity of the evaporator 201 to a normal pressure state for easy discharge. Preferably, after the evaporation unit 2 completes the evaporation of the fecal sewage, the first air-breaking valve 605 can be opened first, and then the first discharge port 205 can be opened for discharge, and the concentrated liquid can be discharged into the drying unit 3 or the outside.

[0074] Optionally, the evaporator 201 is further provided with a first manual air-breaking port, and the control valve assembly 6 further includes a first manual air-breaking valve 606, which is provided at the first manual air-breaking port and is in a normally closed state. When the first air-breaking valve 605 works abnormally, the first manual air-breaking valve 606 can be manually operated to restore the evaporator 201 to a normal pressure state for easy discharge.

[0075] Combination Figure 1 and Figure 2 In some embodiments, the fecal sewage treatment system 100 may further include a heat pump unit 5, which is disposed outside the evaporation kettle 201, and the heat pump unit 5 may be connected to the evaporation unit 2, and the heat pump unit 5 is configured to provide evaporation heat exchange medium to the evaporation unit 2. Since the evaporation unit 2 mainly performs low-temperature evaporation under a negative pressure environment, the evaporation component may include a first evaporation coil 202, and the first evaporation coil 202 is disposed in the inner cavity of the evaporation kettle 201. The heat pump unit 5 may include a compressor 51, a first heat exchange coil 52, a first refrigerant storage tank 53, etc. The compressor 51, the first heat exchange coil 52, the first refrigerant storage tank 53 and the first evaporation coil 202 form a first circulation loop. Among them, the first heat exchange coil 52 can be used as a hot end, and the first evaporation coil 202 can be used as a cold end (to ensure a lower temperature and achieve low-temperature evaporation). The refrigerant circulates between the first evaporation coil 202 and the heat pump unit 5, so that the first evaporation coil 202 can provide a certain temperature to evaporate the fecal sewage.

[0076] Optionally, the temperature of the first evaporation coil 202 can be 35°C-45°C, that is, the evaporation unit 2 of this embodiment can perform negative pressure low-temperature evaporation on fecal sewage, with high evaporation efficiency, and can reduce the energy consumption of the fecal sewage treatment system 100. In this way, the heat pump unit 5 can be used to provide the evaporation component with the heat required for evaporation, and the structure is relatively simple and easy to implement.

[0077] In some embodiments, the control valve assembly 6 may further include a first discharge valve 607, which may be disposed at the first discharge port 205 to control the closing or opening state of the first discharge port 205. For example, after evaporation is completed, the first discharge valve 607 may be opened for discharge. In this way, the opening and closing of the first discharge port 205 may be conveniently controlled.

[0078] Combination Figure 1 In some embodiments, the moisture collection unit 4 may include: a steam condensation module and a water storage module. The steam condensation module may include: a steam condensation tank 41 and a first cooling coil 42, wherein the steam condensation tank 41 may be connected to the evaporation unit 2, for example, the steam condensation tank 41 has a first steam inlet, the first steam inlet is connected to the first steam outlet of the evaporation kettle 201 through a pipeline, and the steam in the evaporation kettle 201 may enter the steam condensation tank 41 through the first steam outlet and the first steam outlet.

[0079] The first cooling coil 42 is arranged in the steam condensation tank 41, and a condensing heat exchange medium flows in the first cooling coil 42. The first cooling coil 42 is configured to cool the steam entering the steam condensation tank 41 into condensed water. For example, the heat pump unit 5 can also be provided with a second heat exchange coil 54. The first cooling coil 42 can form a second circulation loop with the compressor 51 of the heat pump unit 5 and the second heat exchange coil 54, wherein the first cooling coil 42 can serve as the cold end and the second heat exchange coil 54 can serve as the hot end. When the refrigerant circulates in the second circulation loop, it is cooled at the first cooling coil 42, so that the steam entering the steam condensation tank 41 is cooled and liquefied to form condensed water.

[0080] The water storage module may include a water storage container 43, for example, the water storage container 43 may be a water storage tank. The water storage container 43 may be in communication with the steam condensation tank 41, and the steam condensation tank 41 discharges condensed water into the water storage container 43 for storage.

[0081] In this way, the steam condensation module is used to realize the condensation and liquefaction of steam, and the water storage module is used to realize the storage of condensed water, so that the working principle of the water collection unit 4 is simple, reliable and easy to implement.

[0082] Combination Figure 1 In some embodiments, the water storage module may further include a centrifugal pump 44 and a water ejector 45. The centrifugal pump 44 may be a horizontal multistage centrifugal pump 44. The water storage container 43, the centrifugal pump 44 and the water ejector 45 are sequentially connected through pipelines to form a circulation loop for collecting water. Specifically, the centrifugal pump 44 drives the water in the water storage container 43 to circulate in the circulation loop, and the water ejector 45 is also connected to the steam condensation tank 41. When the water ejector 45 is running, the condensed water in the steam condensation tank 41 is pumped into the circulation loop. In this way, when the condensed water in the steam condensation tank 41 needs to be stored in the water storage container 43, the centrifugal pump 44 can be controlled to drive the water in the water storage container 43 to circulate in the circulation loop. When the water flows through the water ejector 45, a high-speed jet is formed. The high-speed fluid causes a pressure drop in the circulation loop (lower than the pressure in the steam condensation tank 41), so that the condensed water in the steam condensation tank 41 enters the circulation loop from the water ejector 45 and finally enters the water storage container 43. In this way, the water storage module of this embodiment fully utilizes the moisture in the fecal sewage collected by the moisture collection unit 4 to form condensed water in the steam condensation tank 41 by high-speed jet suction, thereby increasing the function of the moisture collection unit 4 and eliminating the need for a separate condensed water suction device, thereby having a higher degree of integration and a simpler structure.

[0083] Optionally, the steam condensate tank 41 has a condensate outlet, which is connected to the water ejector 45 through a pipeline, and the control valve assembly 6 further includes a second vacuum valve 608, which is arranged on the pipeline between the condensate outlet and the water ejector 45. When the condensate in the steam condensate tank 41 needs to be stored in the water storage container 43, the second vacuum valve 608 can be opened first, and then the centrifugal pump 44 can be started. In this way, after a certain amount of condensate is stored in the steam condensate tank 41, the second vacuum valve 608 can be opened, the centrifugal pump 44 can be started, and the condensate can be discharged into the water storage container 43, so as to avoid the centrifugal pump 44 being in a normal operation state, thereby reducing the energy consumption of the centrifugal pump 44.

[0084] Combination Figure 1 In some embodiments, the water storage module may further include a second cooling coil 46, which is disposed in the water storage container 43 and is cyclically connected to the heat pump system 100, and the heat pump unit 5 is configured to provide heat exchange medium to the second cooling coil 46.

[0085] For example, the heat pump unit 5 can also be provided with a third heat exchange coil 55, and the second cooling coil 46 can form a third circulation loop with the compressor 51 of the heat pump unit 5, the third heat exchange coil 55, etc., wherein the second cooling coil 46 can serve as the hot end and the third heat exchange coil 55 can serve as the cold end. When the refrigerant circulates in the third circulation loop, heat is released at the second cooling coil 46, so that the heat can be absorbed by the condensed water in the water storage container 43, which is beneficial to transfer the heat in the heat pump unit 5, thereby ensuring the reliable operation of the heat pump unit 5.

[0086] Combination Figure 1 In some embodiments, the water storage container 43 is provided with a water injection port 431 and a water discharge port 432, and the control valve assembly 6 may include: a water injection valve 609 and a water discharge valve 610. The water injection valve 609 is provided with a water injection port 431 and is in a normally closed state. The water injection valve 609 may be opened before the condensed water in the steam condensation tank 41 is discharged into the water storage container 43 for the first time, and a certain amount of water is injected into the water storage container 43 to facilitate the normal operation of the water ejector 45 and the centrifugal pump 44. The water discharge valve 610 is provided at the outlet of the water discharge port 432. When the water volume in the water storage container 43 reaches the allowable water level value, when the air ejector 211 works because the evaporator 201 needs to draw negative pressure, or when the evaporator 201 needs to be flushed through the first micro-feed valve 602, etc., when any of the situations requiring the water storage container 43 to be drained occurs, the water discharge valve 610 may be opened to drain water, which is conducive to the efficient operation of the system 100.

[0087] Optionally, the water storage container 43 is further provided with a water outlet 433, which can at least be connected to the feces collector of the feces collection unit, and the water in the water storage container 43 can flow unidirectionally to the feces collection unit. In this way, by connecting the water collection unit 4 to the feces collection unit, the water in the water storage container 43 can be used for flushing feces, thereby realizing the efficient recycling of water resources. Of course, the water outlet 433 can also be connected to other water-using devices.

[0088] In some embodiments, the water storage module may further include a first liquid level sensor, which is disposed in the water storage container 43 to detect the liquid level in the water storage container 43. The water storage container 43 is configured to drain water when the detection result of the first liquid level sensor is greater than a preset liquid level value. In this way, it is possible to prevent excessive water in the water storage container 43, ensure the normal use of the water storage container 43, and ensure the normal operation of the feces and sewage treatment system 100.

[0089] Combination Figure 1 and Figure 4 In some embodiments, the drying unit 3 may include: a drying box 301 and a heating element 302. Specifically, the drying box 301 may be a structural member that can withstand a certain high temperature. The drying box 301 is provided with a second feed port, a second discharge port 310 and a second steam outlet, wherein the second feed port may be connected to the first discharge port 205 of the evaporating kettle 201 through a pipeline, so that the evaporating kettle 201 discharges the feces concentrate after evaporation into the drying unit 3 for further processing. Optionally, a driving pump may be provided on the pipeline between the second feed port of the drying box 301 and the first discharge port 205 of the evaporating kettle 201, and the driving pump may be an electric diaphragm pump 308 or other types of driving pumps, and the concentrated liquid in the evaporating kettle 201 is driven by the driving pump to be discharged into the drying box 301, so that sufficient pump thrust can be provided for the circulation of the concentrated liquid between the evaporating kettle 201 and the drying box 301.

[0090] The second discharge port 310 is used to discharge the dried material, and the second steam outlet can be connected to the moisture collection unit 4. For example, the steam condensation tank 41 has a second steam inlet. The second steam outlet of the drying box 301 and the second steam outlet of the steam condensation tank 41 can be connected through a pipeline to facilitate the discharge of the steam generated in the drying box 301 into the steam condensation tank 41, thereby realizing the recycling of the steam in the drying box 301.

[0091] Combination Figure 1 and Figure 4The heating element 302 is arranged in the drying box 301. The heating element 302 is used to heat the material to evaporate the water in the material. It can be understood that since the drying unit 3 further removes water from the concentrated liquid after being processed by the evaporation unit 2, the working temperature of the heating element 302 needs to be higher than the temperature of the evaporation component of the evaporation unit 2, and the temperature that the heat pump unit 5 can provide is limited. Therefore, the heating element 302 of this embodiment can be independent of the heat pump unit 5, that is, it is not connected to the heat pump unit 5. For example, the heating element 302 can be an electric heating element 302 or a heat-conducting oil heating element 302. In this way, the heating element 302 can provide sufficient heating temperature to remove the water in the concentrated liquid to the greatest extent and form a fluid material. Optionally, the heating temperature of the heating element 302 can be 60℃-120℃. In this way, the drying unit 3 of this embodiment can achieve medium-temperature drying of the concentrated liquid.

[0092] Optionally, the heating element 302 may include a heat transfer cavity 303, in which heat transfer oil may flow, and a filling port may extend out of the drying box 301 for filling the heat transfer oil into the heat transfer cavity 303. In this way, the temperature of the heat transfer oil is relatively high, and sufficient heat can be provided to the drying unit 3 to dry the concentrated liquid, thereby ensuring the treatment effect.

[0093] Combination Figure 1 and Figure 4 Since the operating temperature of the drying unit 3 is relatively high, the drying box 301 is provided with a second pressure relief port 309, and the control valve assembly 6 includes a second pressure relief valve 612. The second pressure relief valve 612 is provided at the second pressure relief port 309 to open or close the second pressure relief port 309. In this way, when the pressure of the drying box 301 reaches the set pressure value, the second pressure relief valve 612 can be opened to relieve pressure.

[0094] Optionally, the control valve assembly 6 may further include a second feed valve 611 , which may be disposed at a second feed port of the drying box 301 to open or close the second feed port, thereby controlling the feed amount of the drying box 301 .

[0095] Optionally, the control valve assembly 6 may further include a second discharge valve 613 , and the second feed valve 611 may be disposed at the second discharge port 310 of the drying box 301 to open or close the second discharge port 310 , thereby controlling the discharge of the drying box 301 .

[0096] Combination Figure 1 and Figure 4Optionally, the drying unit 3 may include a stirring component, which may include a stirring drive 304, a transmission shaft 305 and a stirring component 306, wherein the stirring drive 304 may be a driving motor, and the stirring component 306 includes a plurality of stirring scrapers arranged circumferentially along the transmission shaft 305. When the drying unit 3 is working, the stirring drive 304 drives the stirring component 306 to rotate through the transmission shaft 305 to stir the concentrated liquid in the drying box 301, which is beneficial to improving the temperature uniformity of the concentrated liquid at various locations, thereby improving the drying efficiency.

[0097] Combination Figure 1 and Figure 4 Optionally, the drying box 301 is also provided with a second air-breaking port 307, and the control valve assembly 6 also includes a second air-breaking valve 614, which is arranged at the second air-breaking port 307. In this way, after the drying unit 3 stops running, the second air-breaking valve 614 can promptly restore the drying box 301 to a normal pressure state to facilitate discharge or other operations.

[0098] Combination Figure 1 and Figure 4 Optionally, the drying unit 3 may further include a second temperature sensor, which is used to measure the temperature in the drying box 301, so as to timely adjust the temperature of the heating element 302 to ensure that the temperature meets the requirements of the drying process.

[0099] The feces and sewage treatment process of the second embodiment of the utility model is described below.

[0100] Combination Figure 1 and Figure 5 The feces and sewage treatment process of this embodiment can be applied to the feces and sewage treatment system 100 in the above embodiment. Specifically, the feces and sewage treatment process may include the following steps:

[0101] S101, aerating the fecal wastewater entering the aeration unit 1;

[0102] Specifically, the feces sewage is discharged into the aeration container 101 of the aeration unit 1 by the feces collection unit. When the feces sewage in the aeration container 101 reaches the set aeration liquid level, the air supply device is started to aerate the feces sewage, and the aeration time is set or until the feces sewage reaches the maximum liquid level. The aeration can be stopped and the aerated feces sewage is discharged into the evaporation kettle 201 of the evaporation unit 2 for temporary storage and wait for the next step of processing.

[0103] The aeration liquid level is preferably set to 20%-35% of the inner cavity height of the aeration container 101. For example, the aeration liquid level may be set to 20%, 22%, 25%, 28%, 30%, 33% or 35% of the inner cavity height of the aeration container 101. Of course, it may not be within the above range. The air supply device may be a 50g air source ozone generator, which supplies ozone to the fecal sewage. The aeration time may be set to 2h-5h. For example, the aeration time may be set to 2h, 3h, 4h or 5h.

[0104] The odor concentration of fecal sewage after aeration treatment is reduced by 95%, the color changes from dark brown to light yellow translucent, and the large particles of solid matter are significantly reduced, and the fluidity is increased.

[0105] S102, discharging the aerated fecal sewage into the evaporation unit 2, the evaporation unit 2 evaporates the fecal sewage at a first preset temperature under a first preset negative pressure value, and the water collection unit 4 collects the steam discharged from the evaporation unit 2;

[0106] Specifically, the first main feed valve 601 between the aeration unit 1 and the evaporation unit 2 can be opened, and a set feed amount of aerated fecal sewage is discharged from the aeration container 101 through the pipeline where the first main feed valve 601 is located into the evaporation kettle 201 of the evaporation unit 2 at one time, and then the first main feed valve 601 is closed. Then the first circulation loop between the evaporation component and the heat pump unit 5 is started, the evaporation component serves as the cold end, the temperature of the evaporation component is 35°C-45°C, and the evaporation kettle 201 is pumped to a negative pressure state through the negative pressure component, and the pressure value is a first preset negative pressure value, so that the evaporation unit 2 evaporates the fecal sewage at a low temperature under a negative pressure environment, removes most of the water in the fecal sewage, and forms a fecal sewage concentrate (whose concentration is 15-20 times that of the fecal sewage original solution); and in the evaporation process, the first cooling coil 42 in the steam condenser of the water collection unit 4 and the second circulation loop formed by the heat pump unit 5 are synchronously operated, and the first steam outlet of the evaporation kettle 201 is connected to the steam condensation tank 41, so that the steam in the evaporation kettle 201 can enter the steam condensation tank 41 for condensation, and when the condensed water in the steam condensation tank 41 reaches a certain amount, it is discharged into the water storage container 43 of the water collection unit 4 for resource utilization, such as circulating toilet flushing, greening irrigation, etc.

[0107] It can be understood that during the evaporation process, as the water content in the fecal sewage gradually decreases, the liquid level in the evaporator 201 gradually decreases, and the fecal sewage needs to be added to the evaporator 201. At this time, the first main feed valve 601 can be kept closed, and the first micro-feed valve 602 can be opened. The aeration container 101 replenishes the fecal sewage to the evaporator 201 multiple times and in batches through the branch where the first micro-feed valve 602 is located, so that the concentrated liquid after evaporation in the evaporator 201 reaches the set discharge volume, and then is uniformly discharged into the drying unit 3 for further treatment.

[0108] In addition, during the evaporation process, as the water content in the fecal sewage continues to decrease, the fecal sewage gradually becomes thicker and the bubbles gradually increase. The amount of bubbles in the evaporator 201 can be detected through the observation window 207 or the foam sensor 213. When it is determined that the bubbles exceed the upper limit of the bubble level, the bubbles in the evaporator 201 are eliminated by opening the first micro-feed valve 602 to feed or replenishing defoaming liquid.

[0109] S103, discharging the evaporated fecal sewage into the drying unit 3, and the drying unit 3 dries the fecal sewage at a second preset temperature under a second preset negative pressure value, and the second preset temperature is higher than the first preset temperature;

[0110] Specifically, after the evaporation unit 2 removes most of the water, the first air-breaking valve 605 is used to restore the evaporation kettle 201 to a normal pressure state, and then the first discharge valve 607 is opened to connect the first discharge valve 607 of the evaporation kettle 201 with the second feed port of the drying box 301. The concentrated liquid in the evaporation kettle 201 enters the drying box 301 through the electric diaphragm pump 308 and the second feed valve 611 for medium-temperature drying. During the drying process, the drying box 301 maintains a negative pressure state, the negative pressure value is a second preset negative pressure value, and the second preset temperature of the drying box 301 is 60° C.-120° C. By controlling the temperature, pressure and other parameters of the drying box 301, the water in the concentrated liquid is evaporated to obtain a dried fluid product.

[0111] Since the drying unit 3 can also remove part of the water in the concentrated liquid in the form of steam, the second steam outlet of the drying box 301 can also be connected to the steam condensation tank 41 of the moisture collection unit 4, so that the steam in the drying box 301 can enter the steam condensation tank 41 for condensation. When the condensed water in the steam condensation tank 41 reaches a certain amount, it is discharged into the water storage container 43 of the moisture collection unit 4 for resource utilization, such as circulating flushing toilets, watering greenery, etc.

[0112] During the drying process, since the concentration of the concentrate is relatively high and the water content gradually decreases, in order to improve the drying effect, the stirring drive member 304 can be controlled to drive the stirring member 306 to rotate through the transmission shaft 305 to stir the concentrate in the drying box 301, which is beneficial to improve the temperature uniformity of the concentrate and thus improve the drying efficiency.

[0113] S104, discharging the fluid material after drying by the drying unit 3.

[0114] The dried fluid material is discharged into the waste residue storage box through the second discharge port 310 of the drying box 301 for resource utilization, such as being used as fertilizer, biofuel, etc.

[0115] According to the fecal sewage treatment process of the embodiment of the utility model, the fecal sewage is aerated through the aeration unit 1 to reduce the concentration of bacteria and microorganisms and odor in the fecal sewage, reduce large solid particles, and increase the fluidity of the fecal sewage; through the evaporation unit 2, most of the water in the fecal sewage can be removed to form a fecal sewage concentrate; through the drying unit 3, the water in the concentrate can be further evaporated to obtain a dried fluid material, which can be used as a resource, and through the water collection unit 4, most of the water separated from the fecal sewage can be collected and utilized again, which is conducive to reducing the waste of water resources and reducing the treatment cost. Therefore, the fecal sewage treatment process of this embodiment can improve the treatment effect of fecal sewage and reduce the pollution of fecal sewage to the environment through the mutual cooperation of multiple steps such as aeration treatment, evaporation treatment, and drying treatment, and is suitable for the treatment of fecal sewage with higher concentrations and treatment difficulties, which expands the scope of use and is more practical.

[0116] In some embodiments, the first preset temperature is 35°C-45°C. For example, the first preset temperature can be 35°C, 36°C, 37°C, 38°C, 39°C, 40°C, 41°C, 42°C, 43°C, 44°C or 45°C. Of course, the utility model is not limited to this. The first preset temperature can be reasonably set within the above range according to actual needs so that the evaporation unit 2 can realize a low-temperature evaporation process to maximize the evaporation efficiency of the evaporation unit 2.

[0117] Optionally, the first preset negative pressure value is 0.08MPa-0.099MPa. For example, the first preset negative pressure value is 0.08MPa, 0.085MPa, 0.09MPa, 0.095MPa, 0.099MPa, etc. Of course, the utility model is not limited to this. The first preset negative pressure value can be reasonably set within the above range according to actual needs to ensure the evaporation efficiency of the evaporation unit 2 to the greatest extent.

[0118] Optionally, the second preset temperature is 60° C.-120° C. For example, the second preset temperature may be 60° C., 70° C., 80° C., 90° C., 100° C., 110° C. or 120° C. Of course, the present invention is not limited to this, and the second preset temperature may be reasonably set within the above range according to actual needs, so that the drying unit 3 realizes the medium-temperature drying process and ensures the drying efficiency of the drying unit 3 to the greatest extent.

[0119] Optionally, the second preset negative pressure value is 0.008MPa-0.009MPa. For example, the second preset negative pressure value is 0.008MPa, 0.0085MPa, 0.009MPa, etc. Of course, the utility model is not limited to this. The second preset negative pressure value can be reasonably set within the above range according to actual needs to ensure the drying efficiency of the drying unit 3 to the greatest extent.

[0120] In some embodiments, aeration of the fecal sewage entering the aeration unit 1 includes: ozone aeration into the fecal sewage, wherein the concentration of ozone is 15mg / L-25mg / L, and the flow rate of ozone is 60L / min-90L / min, for example, the concentration of ozone can be 15mg / L, 18mg / L, 20mg / L, 22mg / L or 25mg / L, etc.; the flow rate of ozone can be 60L / min, 70L / min, 80L / min, 90L / min. In this way, it can be ensured that there is enough ozone in the fecal sewage, and the oxygen content is increased to facilitate sterilization and disinfection, as well as microbial decomposition, removal of odor, and lightening of sewage color.

[0121] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0122] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0123] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0124] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fecal sewage treatment system, characterized in that: include: an aeration unit configured to aerate the fecal wastewater; an evaporation unit, arranged at the downstream side of the aeration unit, the evaporation unit comprising: an evaporation kettle, an evaporation component and a foam detection component, the evaporation kettle is connected to the aeration unit through a pipeline, the evaporation kettle is provided with a first discharge port and a first steam outlet, the first discharge port is used to discharge the evaporated material, the evaporation component is arranged in the evaporation kettle to evaporate the fecal sewage, and the foam detection component is used to detect the amount of bubbles in the evaporation kettle; The moisture collection unit is communicated with the first steam outlet and is configured to condense and store the steam exhausted by the evaporation unit.

2. The fecal wastewater treatment system according to claim 1, characterized in that: The foam detection component comprises: An observation window is provided on a side wall of the evaporating pot, and is used to observe the amount of bubbles in the evaporating pot.

3. The feces and sewage treatment system according to claim 1, characterized in that: The foam detection component also includes: A foam sensor is disposed in the inner cavity of the evaporating pot, and is used to detect the amount of bubbles in the evaporating pot.

4. The feces and sewage treatment system according to claim 1, characterized in that: Also includes: A control valve assembly, the control valve assembly comprising: a first main feed valve and a first micro feed valve, the first main feed valve and the first micro feed valve are arranged in parallel with the valve on the pipeline between the evaporator and the aeration unit, The first main feed valve controls the feed on and off of the evaporation unit, and the first micro feed valve is configured to add material to the evaporation kettle during the operation of the evaporation unit.

5. The fecal wastewater treatment system according to claim 4, characterized in that: Also includes: a control device, wherein the control device is respectively connected to the foam detection component and the first micro-feeding valve for adjusting the operating condition of the first micro-feeding valve according to the detection result of the foam detection component, The operating conditions include: the opening and closing state of the first micro-feed valve, the opening degree and the opening time of the first micro-feed valve.

6. The feces and sewage treatment system according to claim 4, characterized in that: The evaporator is also provided with a defoaming medium inlet, and the defoaming medium inlet is used to introduce defoaming liquid. The control valve assembly comprises a defoaming valve, which is arranged at the defoaming medium inlet to control the on-off of the defoaming medium inlet.

7. The fecal wastewater treatment system according to claim 4, characterized in that: The evaporation unit is provided with a first air-breaking port, and the control valve assembly comprises a first air-breaking valve, which is provided at the first air-breaking port to open or close the first air-breaking port.

8. The feces and sewage treatment system according to claim 1, characterized in that: The evaporation unit further comprises a negative pressure component, and the negative pressure component is configured to draw negative pressure to the evaporation kettle.

9. The fecal wastewater treatment system according to claim 8, characterized in that: The evaporating kettle is also provided with an air extraction port, and the negative pressure component comprises: A first vacuum valve, openably and closably disposed at the air extraction port; An air ejector is connected to the moisture collecting unit through a pipeline, and the air ejector is configured to extract air from the evaporating kettle through the air extraction port when working.

10. The fecal wastewater treatment system according to claim 1, characterized in that: The aeration unit comprises: Aeration containers for storing fecal wastewater; An aeration pipeline, one end of which is connected to an external air supply device, and the other end of which extends below the liquid level of the feces and sewage in the aeration container to aerate the feces and sewage with a gas medium, wherein the gas medium includes ozone.

11. The fecal wastewater treatment system according to claim 1, characterized in that: The moisture collection unit comprises: The steam condensation module comprises: a steam condensation tank and a first cooling coil, wherein the steam condensation tank is connected to the evaporation unit, the first cooling coil is arranged in the steam condensation tank, a condensation heat exchange medium flows in the first cooling coil, and the first cooling coil is configured to cool the steam entering the steam condensation tank into condensed water; The water storage module comprises a water storage container, wherein the water storage container is connected to the steam condensation tank, and the steam condensation tank discharges condensed water into the water storage container for storage.

12. The fecal wastewater treatment system according to claim 11, characterized in that: The water storage module further includes: a centrifugal pump and a water ejector. The water storage container, the centrifugal pump and the water ejector are sequentially connected through a pipeline to form a circulation loop. The centrifugal pump drives the water in the water storage container to circulate in the circulation loop. The water ejector is also connected to the steam condensation tank, and when the water ejector is in operation, the condensed water in the steam condensation tank is pumped into the circulation loop.

13. The fecal wastewater treatment system according to any one of claims 1 to 12, characterized in that: Also includes: A heat pump unit is communicated with the evaporation unit and the moisture collection unit respectively, and the heat pump unit is configured to provide an evaporated heat exchange medium to the evaporation unit and to provide a condensed heat exchange medium to the moisture collection unit.

Images