A mobile waste liquid collection system based on gravity flow and integrated circulation disinfection

Abstract

This application discloses a mobile waste liquid collection system based on gravity flow and integrated circulating disinfection, belonging to the field of medical device technology. The system includes: a collection container module with a multi-functional interface cover, a fluid management module, an emptying module, and a control module. The cover is equipped with a waste liquid inlet, a negative pressure interface that can selectively connect to an external negative pressure source, and an inlet shut-off valve. The method includes: in clinical scenarios such as surgery, setting the system to non-negative pressure or negative pressure mode as needed to collect waste liquid; when the waste liquid reaches a preset threshold, automatically closing the inlet shut-off valve and triggering an alarm; subsequently, after moving the device to a designated disposal area, initiating a one-button program to complete the automatic emptying of the waste liquid and subsequent multi-stage spray cleaning and disinfection. This application effectively solves the core pain points of high equipment cost, process safety hazards, and low operational efficiency in the treatment of large-volume medical waste liquid.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a mobile waste liquid collection system based on gravity flow and integrated circulating disinfection. Background Technology

[0002] In clinical settings, the treatment of medical waste fluids is crucial for infection control. While traditional central negative pressure suction systems are widely used, their complex piping networks are prone to biofilm formation and are primarily suitable for small-volume waste fluid aspiration. In modern surgical procedures, especially those requiring large amounts of irrigation and perfusion, waste fluid volumes often reach 5000 ml or more, making traditional collection bottles inadequate.

[0003] For the treatment of large-volume waste liquids, some integrated collection systems with negative pressure suction have emerged on the market. However, these systems are usually complex in structure and highly integrated in technology, resulting in extremely high manufacturing costs and selling prices, often reaching hundreds of thousands of yuan, making them difficult to widely adopt in operating rooms of hospitals at all levels. At the same time, there are still many surgical scenarios that do not require or are inconvenient to use negative pressure suction.

[0004] Therefore, there is an urgent need in the field for a cost-effective, flexible design that can be used as a standalone non-negative pressure large-capacity collection device, and can also be easily connected to the hospital's existing central negative pressure system to achieve negative pressure suction according to surgical needs, so as to meet diverse clinical needs at a lower cost. Summary of the Invention

[0005] The purpose of this application is to provide a mobile medical waste liquid collection and disposal system and method, which aims to solve the technical problems of high cost, inflexibility and safety hazards of existing large-capacity waste liquid treatment solutions.

[0006] In a first aspect, this application provides a mobile waste liquid collection and disposal system, comprising: a collection container module having a waste liquid inlet and a negative pressure interface selectively connected to an external negative pressure source on its top cover for containing medical waste liquid in non-negative pressure or negative pressure suction mode; an inlet shut-off valve disposed on the pipeline of the waste liquid inlet; a liquid level sensor for monitoring the waste liquid level inside the collection container module; a drain module connected to the bottom of the collection container module, including a main drain valve with a controlled switch; a fluid management module including at least one storage tank for storing cleaning or disinfecting liquid and one or more fluid pumps for pumping liquid; and a control module electrically connected to the inlet shut-off valve, the liquid level sensor, the drain module, and the fluid management module, for: receiving a signal from the liquid level sensor and, when the liquid level reaches a preset threshold, controlling the inlet shut-off valve to close and triggering an alarm signal; responding to a disposal command, controlling the main drain valve to open to discharge the waste liquid, and subsequently controlling the fluid management module to perform at least one automated cleaning and disinfection process inside the collection container module.

[0007] Optionally, a spray head is provided on the top of the collection container module, and the fluid management module is connected to the spray head; when the control module controls the fluid management module to perform an automated cleaning and disinfection process, it is specifically used to control the fluid pump to inject cleaning or disinfecting liquid into the collection container module through the spray head.

[0008] Optionally, the fluid management module further includes an integrated valve manifold, and the control module controls the switching and isolation of the cleaning fluid flow path and the disinfectant flow path by controlling the opening and closing sequence of multiple valves in the valve manifold.

[0009] Optionally, it also includes: A human-machine interface is connected to the control module to receive user operation commands and display the system's operating status and alarm signals.

[0010] Optionally, it also includes a mode selection valve disposed on the negative pressure interface pipeline for controlling the on / off state of the negative pressure interface.

[0011] Secondly, this application provides a mobile waste liquid collection and disposal method, comprising: setting a collection container module to a non-negative pressure collection mode or a negative pressure suction mode according to clinical needs, and containing medical waste liquid; monitoring the waste liquid level in the collection container module in real time through a liquid level sensor; automatically closing an inlet blocking valve set at the waste liquid inlet of the collection container module when the liquid level reaches a preset threshold to prevent the waste liquid from continuing to flow in, and triggering an alarm signal; moving the collection container module to a designated disposal area when disposal is required, and discharging the waste liquid through a main drain valve; and automatically performing a cleaning and disinfection process inside the collection container module after the waste liquid is discharged.

[0012] Optionally, the cleaning and disinfection process includes at least one high-pressure spray cleaning cycle, wherein clean water is injected into the container through a spray head, while the main drain valve remains open to immediately discharge the rinsing wastewater.

[0013] Optionally, the cleaning and disinfection process further includes: after the at least one high-pressure spray cleaning cycle, performing a closed-loop spray disinfection, wherein the closed-loop spray disinfection includes: injecting disinfectant and clean water into the collection container module to form a disinfection working solution under the condition of closing the main drain valve; and driving a circulation path so that the disinfection working solution is continuously sprayed in the collection container module for a preset duration.

[0014] Optionally, the circulating spray is achieved by pumping the disinfectant working solution at the bottom of the collection container module to a spray head located at the top of the collection container module.

[0015] Optionally, the cleaning and disinfection process further includes: after the closed-loop spray disinfection, performing at least one final rinsing cycle, the steps of which are the same as those of the high-pressure spray cleaning cycle.

[0016] The beneficial effects of this application are as follows: With its dual-purpose design, it can be used independently or connected to a central negative pressure system, meeting diverse clinical needs at a lower equipment cost, and is particularly suitable for large-volume waste fluid treatment. Through the separation of the "collection-transfer-disposal" process, automatic inlet blocking to prevent spills, and fully automated closed-loop cleaning and disinfection, it minimizes the risks of operating room contamination, occupational exposure of operators, and cross-infection. Integrating cumbersome manual disposal procedures into a one-button automated program significantly shortens disposal time and reduces the workload of medical staff. Attached Figure Description

[0017] Figure 1 This is a system structure block diagram of a mobile waste liquid collection and disposal system provided in one embodiment of this application.

[0018] Figure 2 This is a flowchart of a mobile waste liquid collection and disposal method provided in one embodiment of this application, which embodies a two-stage working mode.

[0019] In the diagram: 100-Collection container module; 101-Waste liquid inlet; 102-Negative pressure interface; 103-Mode selection valve; 104-Inlet shut-off valve; 110-Spray head; 200-Fluid management module; 210-Storage unit; 220-Power unit; 230-Distribution unit; 300-Drain module; 310-Main drain valve; 400-Control and interaction module; 410-Main controller; 420-Sensor group; 430-User interface. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. System Implementation Examples

[0022] Please see Figure 1 One embodiment of this application provides a mobile wastewater collection and disposal system. In one specific implementation, the system is constructed as a single, integrated mobile cart equipped with omnidirectional casters, allowing it to be moved by caregivers between wards, operating rooms, or other clinical areas. The entire system is encased in a shell, within which all functional modules are housed.

[0023] The system specifically includes a collection container module 100, a fluid management module 200, an emptying module 300, and a control and interaction module 400.

[0024] The collection container module 100 is located at the top of the system. In a preferred embodiment, its top cover is designed as a multi-functional interface cover, which includes: a waste liquid inlet 101 for connecting to a patient drainage tube; a negative pressure interface 102 for selectively connecting to an external central negative pressure source; and a mode selection valve 103, such as a manually switchable ball valve or baffle valve, for controlling the opening and closing of the negative pressure interface 102. When the mode selection valve 103 is closed, the system operates in a non-negative pressure collection mode (e.g., through gravity flow or a micro-positive pressure generated by an external device); when it is connected to a negative pressure source and opened, the system operates in a negative pressure suction mode. Furthermore, an inlet shut-off valve 104 is connected in series on the pipeline of the waste liquid inlet 101. This inlet shut-off valve 104 is a solenoid valve controlled by the main controller 410, used to automatically cut off the inflow path of waste liquid when the container overflows.

[0025] In one example, the main body of the collection container module 100 is a rigid container with a volume of 10 liters. It can be made of 316L medical-grade stainless steel, manufactured by an integral stamping process, and the inner wall is electrolytically polished, with a surface roughness Ra of less than 0.4 micrometers.

[0026] In one example, the main body of the collection container module 100 is a rigid container with a volume of 10 liters. Its material can be medical-grade, corrosion-resistant engineering plastic (such as polypropylene PP or high-density polyethylene HDPE), manufactured through injection molding or blow molding. The inner wall is smooth to reduce wall adhesion and lower overall manufacturing costs. A spray head 110 is fixedly installed on the top inner wall of the container module 100. Exemplarily, the spray head 110 can be a 360-degree self-rotating cleaning ball. At the lowest point of the bottom of the container module 100, a large-diameter drain port is provided, whose diameter can be DN50 (nominal diameter 50 mm) exemplarily.

[0027] In a simplified, low-cost embodiment, the fluid management module 200 mainly includes a liquid storage unit 210 and a distribution unit 230. The liquid storage unit 210 consists of one or more liquid storage tanks. The distribution unit 230 is an integrated valve manifold with an integrated external pressure interface. When spray cleaning or disinfection is required, an external pressure source (such as compressed air or a high-pressure water gun from a hospital) needs to be connected to this interface. After the pressurized gas or liquid passes through the valve manifold, the liquid (clean water or disinfectant) in the liquid storage unit 210 is pushed to the spray head 110.

[0028] In other embodiments, the fluid management module 200 is used to store, meter, pump, and dispense cleaning and disinfectant solutions.

[0029] In one specific implementation, the fluid management module 200 adopts an external design to reduce the device size. The fluid management module 200 includes at least one fluid interface and a mounting bracket. The mounting bracket is fixed to the outer side wall of the collection container module 100 and is used to hold standard medical disinfectant bottles with capacities ranging from 1 liter to 5 liters. The fluid interface communicates with the interior of the disinfectant bottle via a suction tube equipped with a puncture needle or quick connector.

[0030] In another specific implementation, the fluid management module 200 includes a storage unit 210, a power unit 220, and a distribution unit 230. The storage unit 210 consists of two independent 5-liter storage tanks made of corrosion-resistant polypropylene (PP). One tank stores clean water or a special cleaning solution, while the other stores concentrated disinfectant. The power unit 220 provides the power for the liquid flow and can be a peristaltic pump with multiple integrated channels or composed of multiple independent peristaltic pumps. The distribution unit 230 is the central hub for fluid flow, its core being an integrated valve manifold, which can be composed of multiple solenoid valves.

[0031] The venting module 300, located at the bottom of the system, is used to discharge waste liquid and cleaning wastewater. The core component of this module is a main venting valve 310, which is directly connected to the bottom drain port of the collection container module 100. For example, the main venting valve 310 can be a DN50 electric ball valve. The outlet of the main venting valve 310 is connected to a retractable corrugated hose, the end of which is equipped with a quick connector with a cam-locking structure.

[0032] In other embodiments, the drain module 300, located at the bottom of the system, is used to discharge waste liquid and cleaning wastewater. The core component of this module is a main drain valve 310, which is directly connected to the bottom drain port of the collection container module 100. The outlet of the main drain valve 310 is connected to a dedicated drain pipe, which can be, exemplarily, a retractable corrugated hose with a quick-connect fitting at its end featuring a cam-locking structure for sealing connection to a sewer interface.

[0033] The control and interaction module 400 is responsible for executing all automated control logic and providing human-machine interaction. The core of this module is a main controller 410, which, exemplarily, can be a high-performance 32-bit microcontroller (MCU), such as an STM32 series chip. The module also includes a sensor group 420, which includes, but is not limited to, ultrasonic level sensors installed on the collection container module 100 and level sensors installed in each storage tank of the storage unit 210. All sensors convert the collected signals into electrical signals and input them to the main controller 410. The module also includes a user interface (HMI) 430, which, exemplarily, can be a touchscreen or consist of several physical buttons with status indicator lights and a buzzer.

[0034] The human-machine interface uses a 7-inch industrial-grade medical-grade capacitive touchscreen. This touchscreen integrates graphical monitoring software capable of rendering the liquid level percentage within the collection container in real time. For example, when the liquid level is... At that time, the interface displays a percentage. In addition, the interface includes several function button areas, including a "Mode Selection" area where users can choose between "Normal Disinfection Mode," "Enhanced Disinfection Mode," or "Quick Rinse Mode." Selecting "Enhanced Disinfection Mode" will automatically increase the duration of the subsequent disinfection waiting phase. The standard disinfection time is 60 minutes, while the default "normal disinfection mode" is set to 30 minutes. Of course, the duration of each mode can also be set by medical staff according to their actual needs. Method Implementation Examples

[0035] Please see Figure 2 This application provides a mobile waste liquid collection and disposal method, which is executed by the aforementioned system and has been redesigned as a safer, clinically compliant two-stage process: Phase 1: Waste fluid collection in the operating room S100: Move the mobile cart of the device to the patient's bedside or the operating table. Set the operating mode (non-negative pressure or negative pressure) via the mode selection valve 103 according to the surgical needs. Connect the drainage tube from the patient or the waste fluid output tube of the surgical suction device to the waste fluid inlet 101.

[0036] S120: Waste liquid continuously flows into the collection container module 100 in the set mode. During this process, the main controller 410 in the control and interaction module 400 periodically wakes up the ultrasonic level sensor in the sensor group 420 to measure the liquid level in the container at preset time intervals (e.g., every 5 seconds). The measured liquid level data is converted into a percentage and updated in real time on the display screen of the user interface 430.

[0037] S150: When waste liquid continues to flow in, and the main controller 410 detects that the value returned by the liquid level sensor has reached a preset safety threshold (e.g., 90% of the capacity), it will immediately execute two interlocking actions: First, it sends a closing command to the inlet shut-off valve 104, causing it to close immediately, thereby physically preventing the waste liquid from continuing to flow in and preventing overflow; second, it triggers the audible and visual alarm system, issuing a clear "Container full, please handle!" prompt to medical staff through the buzzer and screen flashing of the user interface 430. This alarm state will continue until the nursing staff takes the next step.

[0038] Phase Two: Waste Treatment Room S160: After receiving the alert, medical staff disconnected the drainage tube and pushed the entire device filled with waste liquid out of the operating room and into the designated waste disposal room.

[0039] S200: Pull out the drain hose of the drain module 300, align the quick connector at its end with and tighten it onto the dedicated sewer interface adapter on the ground, ensuring a secure connection. Then, on the touchscreen of the user interface 430, click the "One-Click Disposal" or "Start Drain and Clean" button. This operation constitutes the disposal command. Upon receiving this command, the main controller 410 first performs a safety check (e.g., detecting interface connection via a microswitch). After confirming safety, it immediately executes the drain procedure, controlling the main drain valve 310 to open and drain the medical waste liquid from the container under its own weight. This process is controlled by a timer, for example, for 90 seconds, to ensure complete drainage.

[0040] S300: After the waste liquid is discharged, the system automatically enters an optimized cleaning and disinfection process, which is entirely performed by the spray system, making it highly efficient and water-saving. In a preferred embodiment, S300 includes: S310: Perform at least one high-pressure spray cleaning cycle. The main drain valve 310 remains open. The main controller 410, through the control distribution unit 230 and the power unit 220, establishes a fluid path from the clean water tank of the storage unit 210 to the spray head 110 and starts the clean water pump. For example, 500 ml of clean water is pumped in and sprayed at high pressure onto the inner wall of the container through the rotating spray head 110, flushing off any adhering residual waste liquid and dirt. The wastewater generated after this rinsing is immediately discharged from the equipment because the main drain valve 310 is open. This "inject-instant discharge" rinsing process can be programmed to repeat twice, consuming a total of 1 liter of clean water.

[0041] S320: Perform one spray disinfection. After all cleaning cycles are completed, the main drain valve 310 remains open. The main controller 410 switches the flow path to disinfectant supply mode via the control distribution unit 230. At this time, one end of an external suction tube can be connected to the disinfectant suction port on the fluid management module, and the other end can be placed in an external container with pre-mixed disinfectant. Subsequently, the external pressure source is connected to the external pressure interface to start the pressure supply. The pressure will draw the external disinfectant through the suction tube (using the Venturi effect or direct push) and push it to the spray head 110 to thoroughly spray disinfectant onto the inner wall of the container. Waste liquid generated during the disinfection process is immediately discharged through the opened main drain valve 310. This process continues for a preset duration (e.g., 60 seconds) to ensure the disinfection effect.

[0042] S330: Perform at least one final rinse cycle. After the disinfection cycle timer (the specific time can be set by medical personnel) ends, the main controller 410 stops the circulation pump and opens the main drain valve 310 to completely drain the used disinfectant solution into the sewer. After draining, a thorough final rinse must be performed to completely remove any residual chemical disinfectant. The final rinse process is exactly the same as the high-pressure spray cleaning cycle in step S310. The main controller 410 will control the clean water pump to perform two rinse cycles of "injecting 500 ml of clean water - immediately draining".

[0043] After two final rinse cycles, the entire automated cleaning and disinfection process is complete. The main controller 410 outputs a signal to shut down all pumps and valves, including the main drain valve 310. At this point, the system returns to its initial, clean standby state. The user interface 430 displays a green "Cleaning and disinfection complete, equipment available" message. The entire process, from "starting the process" to "completing," takes approximately 10 minutes and requires no manual intervention.

[0044] Those skilled in the art will understand that the settings of parameters such as time, volume, and concentration for each step in the above embodiments are exemplary. In practical applications, these parameters can be adjusted and preset through the user interface 430 according to factors such as the type of waste liquid being treated, the degree of pollution, and the type of disinfectant selected, in order to achieve the best treatment effect and economy.

[0045] Furthermore, the control module 400 of this application can be implemented as an apparatus for one or more processors to execute a computer program stored thereon. The processor can be a general-purpose processor, such as a central processing unit (CPU), or an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), etc. The computer program can be stored on a computer-readable storage medium, which can be non-volatile, such as read-only memory (ROM) or flash memory, or volatile, such as random access memory (RAM).

[0046] Those skilled in the art should understand that the specific liquid volumes (e.g., 500 ml of clean water for pre-rinsing), concentrations (e.g., 0.5% disinfectant working solution formed by mixing 100 ml of concentrate with 900 ml of clean water), processing times (e.g., a disinfection cycle duration of 300 seconds), and pump flow rates (e.g., a clean water pump flow rate of 1000 ml / min) mentioned in the above embodiments are all exemplary values ​​used to clearly illustrate the technical solution of this application, and are not the sole limitation on the scope of protection of this application. In actual clinical applications or equipment manufacturing, these parameters can be flexibly and adaptively adjusted according to specific needs. For example, for waste liquids with high levels of contamination, the number of pre-rinsing cycles or the volume of water for a single rinse can be appropriately increased; for different types of pathogens, disinfectants with different chemical compositions can be selected, and their working concentration and action time can be adjusted according to their physicochemical properties and manufacturer recommendations; the volume of the collection container module can also be designed as 5 liters, 15 liters, or other different specifications according to the needs of the application scenario (e.g., operating room or general ward), and the corresponding liquid injection volumes and processing times will also be adjusted proportionally. These parameter optimizations, component specification changes, or process adaptations based on the core technical concepts and automated process framework disclosed in this application should all be considered to fall within the scope of protection claimed in this application.

[0047] In summary, this application provides an innovative mobile waste liquid collection and disposal system and method. By deeply integrating flexible waste liquid collection methods with multi-stage automated cyclic cleaning and disinfection functions, and encapsulating them in an independent, flexibly mobile unit, a closed-loop management model for the entire "collection-transfer-disposal" process is constructed. It precisely addresses the core pain points of existing waste liquid treatment processes, such as high occupational exposure risks, cumbersome operation, low efficiency, and reliance on fixed facilities. It provides a revolutionary solution for the safe and efficient treatment of clinical medical waste liquid, possessing extremely high clinical application value and promising prospects for widespread adoption.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0049] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mobile waste liquid collection system based on gravity flow and integrated circulating disinfection, characterized in that, include: A collection container module has a waste liquid inlet and a negative pressure interface that can be selectively connected to an external negative pressure source on its top cover, for containing medical waste liquid in non-negative pressure or negative pressure suction mode. An inlet shut-off valve is installed on the pipeline at the waste liquid inlet; A liquid level sensor is used to monitor the waste liquid level in the collection container module; An venting module, connected to the bottom of the collection container module, includes a main venting valve with a controlled switch; A fluid management module includes at least one fluid interface for external connection to an external disinfectant source and an external pressure interface for connection to an external pressure source. A control module, electrically connected to the inlet shut-off valve, the liquid level sensor, the venting module, and the fluid management module, is used for: The system receives signals from the liquid level sensor and, when the liquid level reaches a preset threshold, controls the inlet shut-off valve to close and triggers an alarm signal. In response to a disposal command, the main drain valve is opened to discharge waste liquid, and the fluid management module is subsequently controlled to perform at least one automated cleaning and disinfection process inside the collection container module.

2. The system according to claim 1, characterized in that, A spray head is provided on the top of the collection container module, and the fluid management module is connected to the spray head; when the control module controls the fluid management module to perform an automated cleaning and disinfection process, it is specifically used to control the fluid pump to inject cleaning or disinfecting liquid into the collection container module through the spray head.

3. The system according to claim 1 or 2, characterized in that, The fluid management module also includes an integrated valve manifold. The control module controls the opening and closing sequence of multiple valves in the valve manifold to switch and isolate the cleaning fluid flow path and the disinfectant flow path.

4. The system according to claim 1, characterized in that, Also includes: A human-machine interface, connected to the control module, is used to receive user operation commands and display the system's operating status and alarm signals. It includes a medical-grade capacitive touchscreen, which displays a real-time percentage progress bar of the waste liquid level in the collection container module and provides mode selection buttons for selecting different disinfection intensities.

5. The method according to claim 4, characterized in that, The control module has multiple preset disinfection modes, and the preset duration is dynamically adjusted according to the disinfection mode selected by the human-computer interaction interface.

6. The system according to claim 1, characterized in that, It also includes a mode selection valve installed on the negative pressure interface pipeline for controlling the opening and closing of the negative pressure interface.

7. A mobile waste liquid collection and disposal method, characterized in that, include: Set a collection container module to either a non-negative pressure collection mode or a negative pressure suction mode, and contain medical waste liquid; The waste liquid level in the collection container module is monitored in real time by a liquid level sensor. When the liquid level reaches a preset threshold, an inlet blocking valve located at the waste liquid inlet of the collection container module is automatically closed to prevent the waste liquid from continuing to flow in and to trigger an alarm signal. When disposal is required, the collection container module is moved to a designated disposal area and the waste liquid is discharged through a main drain valve; After the waste liquid is discharged, a cleaning and disinfection process is automatically performed inside the collection container module.

8. The method according to claim 7, characterized in that, The cleaning and disinfection process includes: At least one high-pressure spray cleaning cycle is performed, wherein clean water is injected into the container through a spray head, while the main drain valve remains open to immediately discharge the flushing wastewater.

9. The method according to claim 8, characterized in that, The cleaning and disinfection process also includes: After at least one high-pressure spray cleaning cycle, a closed-loop spray disinfection is performed, wherein the closed-loop spray disinfection includes: injecting disinfectant and clean water into the collection container module to form a disinfection working solution under the condition that the main drain valve is closed; and driving a circulation path so that the disinfection working solution is continuously sprayed in the collection container module for a preset time.

10. The method according to claim 9, characterized in that, The cleaning and disinfection process also includes: After the closed-loop spray disinfection, at least one final rinsing cycle is performed, with the same steps as the high-pressure spray cleaning cycle.

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