Sewage treatment system and road cleaning vehicle

Abstract

The utility model relates to a sewage treatment system, and discloses a sewage treatment system and a road cleaning vehicle, the sewage treatment system comprises a first bearing part, a first filtering module, a second filtering module, a clear water tank and a first cleaning module, and the first bearing part is internally provided with a containing cavity; the first filtering module is provided with a sewage input port and a filtered water output port and is responsible for primarily filtering collected sewage, the second filtering module is located in the containing cavity and internally provided with a filtering membrane and is used for secondarily filtering the sewage treated by the first filtering module, and the clear water tank is connected with the containing cavity; the clean water tank is used for storing cleaning liquid filtered by the second filtering module, the first cleaning module is used for backwashing the second filtering module through liquid in the clean water tank to keep a filtering membrane clean, and through a two-stage filtering and membrane cleaning mechanism, the sewage treatment efficiency is improved, and the maintenance cost is reduced; the working efficiency and the service life of the internal filtering module can be obviously improved.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and further to a wastewater treatment system and a road cleaning vehicle. Background Technology

[0002] Road cleaning equipment (such as road cleaning vehicles) is an important tool in urban sanitation work. During operation, it typically treats wastewater and impurities to obtain cleaning fluid, which can then be reused for cleaning urban roads. In existing road cleaning vehicles, filtration modules are used to separate solid particles from wastewater to maintain the cleanliness of the cleaning fluid. However, after prolonged use, the filtration efficiency of these modules gradually decreases because accumulated dirt on the filter media obstructs water flow, affecting the filtration effect.

[0003] In existing road cleaning equipment, the filter modules are not designed with a cleaning function, which means that dirt on the filter media cannot be removed in time. Over time, this will seriously affect the filtration performance. When the filtration efficiency of the filter module decreases, it often needs to be disassembled and cleaned manually, which not only increases the difficulty of maintenance, but also reduces the efficiency of the equipment. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this application is to provide a sewage treatment system and a road cleaning vehicle that improves the service life of the filter module, thereby enhancing the overall equipment's working efficiency.

[0005] To achieve the above objectives, this application provides a wastewater treatment system for road cleaning equipment, comprising:

[0006] The first load-bearing component is provided with a receiving chamber;

[0007] The first filtration module is provided with a sewage inlet and a filtered water outlet. Sewage is introduced through the sewage inlet and filtered in the first filtration module. The filtered water outlet is connected to a water supply pipeline and is used to output the liquid formed after the sewage is filtered by the first filtration module.

[0008] The second filtration module is disposed in the receiving chamber. The second filtration module includes a plurality of filter membranes. The water supply pipeline is introduced into the receiving chamber so that the second filtration module is connected to the first filtration module to filter the sewage filtered by the first filtration module again.

[0009] The clean water tank is connected to the second filtration module via a pipe passing through the containment chamber. It is used to store the clean water formed after the sewage is filtered by the second filtration module, so that the road can be repeatedly cleaned with the clean water in the clean water tank.

[0010] The first cleaning module has one end connected to the clean water tank and the other end inserted into the accommodating chamber and correspondingly arranged with several filter membranes. It is used to obtain clean water from the clean water tank to backwash the second filter module.

[0011] In some embodiments, the wastewater treatment system includes a second cleaning module, one end of which extends into the accommodating cavity and the other end is connected to the clean water tank or an external water source. The horizontal height of the second cleaning module is lower than that of the first cleaning module, and it is used to rinse the lower middle part of the plurality of filter membranes and the inner wall of the lower middle part of the first carrier.

[0012] The first support member is provided with a drain outlet, which is used to cooperate with the first cleaning module and the second cleaning module to discharge sewage, sludge or impurities from the accommodating cavity.

[0013] In some embodiments, the first cleaning module includes a backwash outlet pipe and a first suction pump; one end of the backwash outlet pipe is connected to the clean water tank, and the other end passes through the first support member and extends into the receiving cavity; the first suction pump is disposed in the backwash outlet pipe to adjust the water flow rate and pressure in the backwash outlet pipe.

[0014] In some embodiments, the first cleaning module further includes a high-pressure rotary nozzle connected to the end of the backwash pipeline away from the clean water tank, and the high-pressure rotary nozzle is located above the plurality of filter membranes for rinsing the filter membranes.

[0015] In some embodiments, the wastewater treatment system further includes a second support for carrying wastewater, wherein the first support, the first filter module, and the second filter module are all disposed within the second support;

[0016] The first filtration module is a hydrocyclone, which is fixed to one side wall of the first support member. The wastewater inlet is located on the side of the hydrocyclone and is used to introduce the mixture to be separated into solid and liquid into the hydrocyclone. The filtered water outlet is located at the top of the hydrocyclone and is used to discharge the upper clear liquid formed after the wastewater is filtered by the hydrocyclone. The bottom of the hydrocyclone is provided with an overflow outlet for discharging the wastewater filtered by the hydrocyclone. The overflow outlet is connected to the internal chamber of the second support member, so that the second support member can store the wastewater discharged from the overflow outlet.

[0017] In some embodiments, the wastewater treatment system further includes a wastewater suction module disposed within the second carrier, and the discharge end of the wastewater suction module is connected to the wastewater inlet for conveying filtered or unfiltered wastewater into the hydrocyclone.

[0018] The sewage suction module includes a sewage suction pump, which is used to pump sewage.

[0019] In some embodiments, the sewage suction module further includes an auxiliary filtration module, which is located upstream of the sewage suction pump, so that the sewage can be filtered by the auxiliary filtration module before being pumped to the hydrocyclone by the sewage suction pump.

[0020] In some embodiments, a partition plate is provided inside the second carrier to divide the internal chamber of the second carrier into upper and lower spaces. The upper space is used as a sewage tank to hold sewage, and the lower space is used as the clean water tank. The first carrier, the first filter module, and the second filter module are disposed in the sewage tank.

[0021] In some embodiments, the wastewater treatment system further includes a first liquid level detection module disposed inside the first support member for detecting the liquid level in the first support member; and / or, the wastewater treatment system further includes a second liquid level detection module disposed inside the second support member for detecting the liquid level in the second support member.

[0022] Another aspect of this application also provides a road cleaning vehicle, comprising:

[0023] The cleaning vehicle itself;

[0024] The aforementioned wastewater treatment system is installed on the cleaning vehicle body;

[0025] A flushing module is connected to the clean water tank to obtain clean water from the tank and clean the road.

[0026] Compared with the prior art, the sewage treatment system and road cleaning vehicle provided in this application have the following advantages:

[0027] Beneficial effects:

[0028] 1. The backwashing setting of the first cleaning module can realize timely rinsing of the filter membrane of the second filtration module, reducing the need for manual cleaning, thereby reducing maintenance costs and workload, reducing equipment failures caused by dirt accumulation, and thus improving the reliability and service life of the entire road cleaning equipment.

[0029] 2. The second cleaning module can effectively rinse the lower middle part of the filter membrane and the inner wall of the lower middle part of the first support component. This helps to more thoroughly remove dirt and impurities attached to these areas. The coordinated work of the second and first cleaning modules can achieve comprehensive cleaning of the filter membrane and the inner wall of the first support component, improving cleaning efficiency and effectiveness. Simultaneously, by providing a drain outlet, the system can more effectively discharge wastewater, sludge, or impurities, maintaining the cleanliness of the first support component and avoiding secondary pollution.

[0030] 3. Wastewater from the second carrier is introduced into the hydrocyclone via the wastewater suction module. The hydrocyclone, acting as the first filtration module, uses centrifugal force to separate solid particles from the wastewater and discharge them from the overflow port. The cleaner liquid is discharged from the filtered water outlet at the top. The liquid that has undergone preliminary filtration by the hydrocyclone flows into the first carrier with the second filtration module and is further filtered through the filter membrane. Finally, the wastewater that has undergone two filtrations flows back to the second carrier through the drain port on the first carrier, forming a closed-loop circulating filtration system. The two filtration processes effectively remove solid impurities from the wastewater, significantly improving the quality of the effluent. In addition, by using the water after circulating filtration, the dependence on fresh water resources is reduced, thus achieving water conservation. Attached Figure Description

[0031] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this application.

[0032] Figure 1 This is a simplified overall structural diagram of one embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the overall structure of one embodiment of this application;

[0034] Figure 3 This is a cross-sectional schematic diagram of one embodiment of this application;

[0035] Figure 4 This is a partial structural schematic diagram of an embodiment of this application at the position of the first carrier member;

[0036] Figure 5 yes Figure 4 A diagram from another perspective;

[0037] Figure 6This is a schematic diagram of the structure of the first filtering module in one embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the structure of the first filtering module in one embodiment of this application from another perspective.

[0039] Reference numerals: First support component 1; accommodating chamber 10; drain outlet 11; drain pipe 111; first filter module 2; wastewater inlet 20; filtered water outlet 21; overflow outlet 22; second filter module 3; filter membrane 31; clean water tank 41; wastewater tank 42; first cleaning module 5; backwash outlet pipe 51; first suction pump 52; second support component 6; partition plate 61; wastewater suction module 7; wastewater suction pump 70; auxiliary filter module 71; second cleaning module 8; first liquid level detection module 91; second liquid level detection module 92. Detailed Implementation

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0041] To keep the drawings concise, each drawing only schematically shows the parts relevant to the application; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one."

[0042] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0043] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Road sweeping equipment is an indispensable tool in urban sanitation management, used to maintain the cleanliness of city roads, ensure traffic safety, and maintain the quality of the urban environment. With the development of urbanization, the requirements for the efficiency and environmental performance of road sweeping equipment are becoming increasingly stringent. Existing road sweeping equipment is usually equipped with a wastewater treatment system to treat the wastewater and debris collected during the sweeping process.

[0047] Existing road sweeping equipment is usually equipped with a primary filtration system to separate larger solid particles and prevent pump and pipe blockage. However, the primary filtration system often cannot effectively remove all solid particles, resulting in fine particles still being present in the filtered water, which affects subsequent treatment and recycling. Moreover, dirt accumulates on the filter module during use, but existing equipment lacks an effective cleaning mechanism, causing the filtration efficiency to decrease over time and requiring frequent manual cleaning, which increases maintenance and labor costs.

[0048] Based on the current situation, this application provides a wastewater treatment system that can improve filtration efficiency and extend the service life of the filter module, thereby effectively reducing equipment maintenance costs and manpower input for cleaning work.

[0049] Reference manual attached Figure 1 and Figure 2 The wastewater treatment system provided in this application includes a first support 1, a first filter module 2, a second filter module 3, a clean water tank 41, and a first cleaning module 5. The first support 1 has an internal accommodating chamber 10 to provide installation space for other components.

[0050] The first filtration module 2 can receive and preliminarily process the sewage entering through the sewage inlet 20. The module uses an internal filtration mechanism to preliminarily separate solid impurities in the sewage and discharge a relatively clean liquid through the filtered water outlet 21.

[0051] And such Figure 4 and Figure 5 As shown, the second filtration module 3 is disposed within the receiving chamber 10 of the first carrier 1 and is connected to the first filtration module 2. This module includes several filter membranes 31, which are used to further finely filter the liquid output from the first filtration module 2 to ensure that the cleanliness of the liquid meets the requirements for road cleaning. The clean water tank 41 is connected to the receiving chamber 10 and is used to collect the clean liquid (clean water) treated by the second filtration module 3. This liquid is used for road cleaning operations, realizing the conservation and effective utilization of water resources.

[0052] Specifically, the first cleaning module 5 backwashes the filter membrane 31 with liquid from the clean water tank 41 to remove impurities accumulated during the filtration process and maintain the filtration efficiency of the filter membrane 31. Understandably, in this embodiment, the first filtration module 2, as a primary treatment unit, removes large particulate impurities from wastewater through physical separation. Subsequently, the second filtration module 3 further traps small particles through the microporous structure of the filter membrane 31, ensuring the quality of the effluent. More importantly, the introduction of the first cleaning module 5 allows the filter membrane 31 to be cleaned without disassembly, which not only improves the automation level of the system but also reduces maintenance costs.

[0053] This design effectively solves the problems of low sewage treatment efficiency, insufficient water resource utilization, and difficult maintenance of filter modules in existing road cleaning equipment. Of course, in addition to the first filter module 2 and the second filter module 3 in this embodiment, a third stage of filtration, a fourth stage of filtration, etc., such as activated carbon filtration, can be added to further improve the effluent quality.

[0054] In one embodiment, based on the above embodiment, the sewage treatment system further includes a second support member 6, which is used to support and store sewage. Meanwhile, the first support member 1 and the filter module are both disposed inside the second support member 6.

[0055] More specifically, such as Figure 6 and Figure 7 As shown, the first filtration module 2 is a hydrocyclone, which is fixed to the side wall of the first support member 1. The hydrocyclone receives the wastewater to be treated through its wastewater inlet 20 and uses centrifugal force to separate the solid particles from the liquid in the wastewater. The filtered liquid is discharged from the filtered water outlet 21 at the top of the hydrocyclone to the first support member 1, which has a second filtration module 3, for further filtration to remove small particles and impurities, while the solid particles are discharged through the bottom overflow outlet 22 and flow back into the internal chamber of the second support member 6, completing the initial solid-liquid separation.

[0056] As can be seen from the above, the wastewater treatment system in this embodiment utilizes a hydrocyclone as the first filtration module 2, which can effectively improve the efficiency of wastewater treatment, making the solid-liquid separation process fast and efficient. Secondly, the hydrocyclone has a compact structure, occupies little space, and is easy to install and maintain. In addition, the operating cost of the hydrocyclone is relatively low, and it does not require additional media or complex operating procedures. If the first filtration module 2 does not use a hydrocyclone, alternative solutions can also use traditional filtration systems, such as sand filters or membrane filtration systems. However, these systems usually occupy a larger volume, require more maintenance and filter media replacement, and may not be able to achieve the high-efficiency treatment capacity of the hydrocyclone.

[0057] Based on the above embodiments, a sewage suction module 7 is also provided in the sewage treatment system. The sewage suction module 7 is located in the second support member 6 and includes a sewage suction pump 70. The sewage suction pump 70 is connected to the sewage inlet 20 of the hydrocyclone and is responsible for pumping the sewage stored in the second support member 6 to the first filter module 2.

[0058] It should be noted that the design of the wastewater suction module 7 enables the entire wastewater treatment system to form a closed-loop cycle. Wastewater treated by the first filtration module 2, i.e., the liquid after preliminary solid-liquid separation, is discharged through the filtered water outlet 21 and flows into the second filtration module 3 for further fine filtration. The clean liquid treated by the second filtration module 3 is finally collected in the clean water tank 41 for road cleaning or other purposes. Simultaneously, the first cleaning module 5 uses the clean liquid in the clean water tank 41 to backwash the second filtration module 3 to maintain the cleanliness and filtration efficiency of the filter membrane 31.

[0059] Moreover, the overflow port 22 at the bottom of the hydrocyclone discharges the separated solid particles or still dirty sewage into the internal chamber of the second carrier 6. This sewage can be extracted again by the sewage suction module 7 and sent back to the hydrocyclone for recycling. This recycling process not only improves the efficiency of sewage treatment, but also reduces the system's energy consumption and operating costs.

[0060] In addition, the wastewater in the second carrier 6 mainly originates from wastewater collected during road cleaning, which may include rainwater, branches, and dust. Specifically, the road cleaning equipment is equipped with a dedicated collection system that can simultaneously collect wastewater while washing the road. For example, a built-in suction system uses suction to collect wastewater and debris from the road surface. This mixture can be collected directly into the second carrier 6 or into other storage tanks, and then transported to the second carrier 6 through pipelines for subsequent use.

[0061] Furthermore, the aforementioned wastewater suction module 7 also includes an auxiliary filtration module 71, which is located upstream of the wastewater suction pump 70, allowing the wastewater to undergo preliminary filtration before being pumped to the hydrocyclone. Moreover, the auxiliary filtration module 71 also protects the wastewater suction pump 70 from damage by large solid particles, while simultaneously improving the overall filtration efficiency of the system.

[0062] Optionally, the auxiliary filtration module 71 may be a grid filter, which consists of a series of parallel grid bars or a mesh structure. The spacing between the grid bars is determined by the particle size to be removed. These grid bars can be fixed or adjustable to adapt to different filtration needs, preventing debris from entering the subsequent filtration system and thus reducing the risk of wear or clogging.

[0063] In one embodiment, refer to the appendix to the specification. Figure 3 The internal chamber of the second carrier 6 is divided into two independent functional areas by a partition plate 61: the upper sewage tank 42 and the lower clean water tank 41.

[0064] Specifically, as shown in the figure, the sewage tank 42 is located on the upper side of the partition plate 61. The first support member 1, together with the first filter module 2 and the second filter module 3, are all installed in the sewage tank 42 to centrally treat the sewage. The clean water tank 41 is connected to the first support member 1 through corresponding pipelines to obtain the liquid that has undergone secondary filtration in the first support member 1.

[0065] Through the design of the partition plate 61 inside the second carrier 6, the system achieves effective separation of sewage and clean water in a limited space, improving the compactness and space utilization of the equipment. At the same time, this physical separation method can reduce the risk of cross-contamination between clean water and sewage, ensuring the cleanliness of the clean water.

[0066] In one embodiment, such as Figure 1 and Figure 5 As shown, the wastewater treatment system is equipped with a second cleaning module 8 to achieve deep cleaning of the filter membrane 31 and the inner wall of the first carrier 1, ensuring the continuity and efficiency of the wastewater treatment process.

[0067] Specifically, the second cleaning module 8 is at a lower horizontal height than the first cleaning module 5. One end of the second cleaning module 8 extends into the accommodating chamber 10 of the first support member 1, directly rinsing the lower middle part of the filter membrane 31 and the inner wall of the lower middle part of the first support member 1. This ensures that the cleaning water flow covers the areas of the filter membrane 31 and its inner wall most prone to dirt accumulation. Meanwhile, the other end of the second cleaning module 8 is connected to the clean water tank 41 or an external water source, providing a stable water source for the cleaning process. Using the water source in the clean water tank 41 not only improves water resource utilization efficiency but also reduces dependence on external clean water sources.

[0068] In addition, such as Figure 4 As shown, a drain port 11 can be provided on the first support member 1, which works in conjunction with the first cleaning module 5 and the second cleaning module 8 to ensure that wastewater, sludge, or impurities generated during the cleaning process can be discharged in a timely manner, avoiding re-contamination of the cleaning solution. It should be noted that the drain port 11 can be directly connected to the drain pipe 111, so that when a lot of dirt accumulates on the filter membrane 31, sludge and other solid waste can be discharged directly, preventing it from flowing into the second support member 6, thereby preventing re-contamination of the wastewater. Similarly, in practical applications, when the degree of contamination of the filter membrane 31 is low, the connection of the drain pipe 111 can be disconnected, allowing the wastewater in the first support member 1 to flow back into the second support member 6 for recycling.

[0069] In the actual setup, the second cleaning module 8 is equipped with a nozzle or cleaning device at one end of the cavity 10, which can generate sufficient water flow impact force to effectively remove dirt adhering to the filter membrane 31 and the inner wall; at the same time, a control valve can be set on the connecting pipeline between the second cleaning module 8 and the clean water tank 41 to control the water flow speed in the pipeline.

[0070] Furthermore, the first cleaning module 5 includes a backwash water outlet pipe 51 and a first suction pump 52. One end of the backwash water outlet pipe 51 is connected to the clean water tank 41, and the other end passes through the first support member 1 and extends into the receiving chamber 10 and is aligned with the filter membrane 31. The first suction pump 52 is installed on the backwash water outlet pipe 51 and is responsible for adjusting the water flow speed and pressure in the pipe to achieve effective backwashing of the filter membrane 31.

[0071] Understandably, this embodiment utilizes the negative or positive pressure generated by the first suction pump 52 to pump clean water from the clean water tank 41 to the surface of the filter membrane 31 through the backwash water outlet pipe 51 for rinsing. This cleans the dirt and impurities accumulated on the surface of the filter membrane 31, restoring its filtration capacity. The adjustable function of the first suction pump 52 ensures that the water flow rate and pressure during the backwashing process can be adjusted according to actual needs to achieve the best cleaning effect.

[0072] Based on the above, in one embodiment, the first cleaning module 5 is disposed above the second filter module 3, enabling the first cleaning module 5 to clean the second filter module 3 from the top. This not only ensures the cleanliness of the upper part of the filter membrane 31 but also complements the second cleaning module 8, which focuses on rinsing the middle and lower parts of the filter membrane 31. Through this combined top-and-bottom cleaning method, the entire filter membrane 31 can be thoroughly cleaned, effectively removing accumulated dirt and impurities.

[0073] Specifically, the first cleaning module 5 also includes a high-pressure rotating nozzle. The high-pressure rotating nozzle is connected to the end of the backwash pipeline away from the clean water tank 41 and is located above the filter membrane 31. It is used to rinse the filter membrane 31, effectively removing dirt and impurities from the surface of the filter membrane 31. The rotation power of the nozzle comes from the kinetic energy of the water flow, without the need for an additional power source.

[0074] Alternatively, the filter membranes 31 in the second filter module 3 may be ceramic membranes. The ceramic membranes are made of inorganic materials that are resistant to acids and alkalis and high temperatures. They have uniform micron or nano-sized pores and can effectively intercept suspended solids, colloids, microorganisms and some dissolved pollutants in sewage. They also have the characteristics of chemical corrosion resistance and high temperature resistance, making them suitable for road cleaning operations under various environmental conditions.

[0075] In one embodiment, the wastewater treatment system further includes a first liquid level detection module 91, which is located inside the first support member 1. The first liquid level detection module 91 can contact the liquid in the first support member 1, thereby providing accurate liquid level information. Generally, the liquid level detection module uses a float level switch, ultrasonic or capacitive sensors, etc., to detect changes in liquid level in real time. At the same time, these sensors can send signals or data to the control system so that the system can automatically adjust the operating status of the water pump based on the real-time liquid level data to prevent overflow or dry operation.

[0076] Similarly, a second liquid level detection module 92 can be installed inside the second carrier 6. The second liquid level detection module 92 can directly contact the liquid in the second carrier 6 to provide liquid level information in the second carrier 6. Of course, the first liquid level detection module 91 and the second liquid level detection module 92 can be installed with multiple liquid levels, so that the liquid level detection function is more comprehensive and reliable.

[0077] By integrating these two level detection modules into the wastewater treatment system, we not only improved the system's automation level but also enhanced its adaptability to different operating conditions. The real-time data feedback from these modules enables the system to respond more intelligently to changes in water level, optimizing water resource utilization efficiency, reducing energy consumption, and improving overall treatment performance.

[0078] In one embodiment, according to another aspect of this application, this application further provides a road cleaning vehicle (not shown in the drawings), specifically including a cleaning vehicle body, the aforementioned sewage treatment system, and a flushing module. The sewage treatment system is installed on the cleaning vehicle body, enabling subsequent filtration of the sewage collected by the road cleaning vehicle. Simultaneously, the flushing module is connected to the clean water tank 41 in the sewage treatment system, enabling the use of clean water from the tank 41 to clean the road, achieving water resource recycling.

[0079] Understandably, a cleaning vehicle typically includes a power system, a driving mechanism, and a control system, used to perform road cleaning operations. The wastewater collected by the road cleaning vehicle during cleaning operations is effectively filtered and treated through a wastewater treatment system. The system removes solid particles and impurities from the wastewater through a two-stage filtration mechanism. The treated clean water is stored in a clean water tank 41. Finally, the flushing module obtains the treated clean water from the clean water tank 41 and uses this water for the final cleaning of the road. The flushing module may include nozzles and control valves, allowing operators to adjust the water pressure and flow rate to meet different cleaning needs.

[0080] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A wastewater treatment system, characterized in that, Road cleaning equipment includes: The first load-bearing component is provided with a receiving chamber; The first filtration module is provided with a sewage inlet and a filtered water outlet. Sewage is introduced through the sewage inlet and filtered in the first filtration module. The filtered water outlet is connected to a water supply pipeline and is used to output the liquid formed after the sewage is filtered by the first filtration module. The second filtration module is disposed in the receiving chamber. The second filtration module includes a plurality of filter membranes. The water supply pipeline is introduced into the receiving chamber so that the second filtration module is connected to the first filtration module to filter the sewage filtered by the first filtration module again. A clean water tank, which is connected to the second filtration module via a pipe passing through the accommodating chamber, is used to store clean water formed after sewage is filtered by the second filtration module, so that the clean water in the clean water tank can be used to clean the road. The first cleaning module has one end connected to the clean water tank and the other end inserted into the accommodating chamber and correspondingly arranged with several filter membranes. It is used to obtain clean water from the clean water tank to backwash the second filter module.

2. The wastewater treatment system according to claim 1, characterized in that, include: The wastewater treatment system includes a second cleaning module. One end of the second cleaning module extends into the accommodating cavity, and the other end is connected to the clean water tank or an external water source. The horizontal height of the second cleaning module is lower than that of the first cleaning module. It is used to rinse the lower middle part of the plurality of filter membranes and the inner wall of the lower middle part of the first carrier. The first support member is provided with a drain outlet, which is used to cooperate with the first cleaning module and the second cleaning module to discharge sewage, sludge or impurities from the accommodating cavity.

3. The wastewater treatment system according to claim 1, characterized in that, The first cleaning module includes a backwash outlet pipeline and a first suction pump; One end of the backwash outlet pipe is connected to the clean water tank, and the other end passes through the first support member and extends into the receiving cavity. The first suction pump is installed in the backwash outlet pipe to adjust the water flow speed and pressure in the backwash outlet pipe.

4. The wastewater treatment system according to claim 3, characterized in that, The first cleaning module also includes a high-pressure rotary nozzle, which is connected to the end of the backwash pipeline away from the clean water tank, and is located above the plurality of filter membranes for rinsing the filter membranes.

5. The wastewater treatment system according to any one of claims 1-4, characterized in that, The wastewater treatment system further includes a second support component for carrying wastewater, and the first support component, the first filter module, and the second filter module are all disposed within the second support component; The first filtration module is a hydrocyclone, which is fixed on one side wall of the first support member. The sewage inlet is located on the side of the hydrocyclone and is used to introduce the mixture to be separated into solid and liquid into the hydrocyclone. The filtered water outlet is located at the top of the hydrocyclone and is used to discharge the clear liquid formed after the sewage has been filtered by the hydrocyclone. The bottom of the hydrocyclone is provided with an overflow port for discharging the wastewater filtered by the hydrocyclone. The overflow port is connected to the internal chamber of the second support member, so that the second support member can store the wastewater discharged from the overflow port.

6. The wastewater treatment system according to claim 5, characterized in that, The wastewater treatment system also includes a wastewater suction module, which is disposed in the second support member and the discharge end of the wastewater suction module is connected to the wastewater inlet, for conveying filtered or unfiltered wastewater into the hydrocyclone. The sewage suction module includes a sewage suction pump, which is used to pump sewage.

7. The wastewater treatment system according to claim 6, characterized in that, The sewage suction module also includes an auxiliary filtration module, which is located upstream of the sewage suction pump, so that the sewage can be filtered by the auxiliary filtration module before being pumped to the hydrocyclone by the sewage suction pump.

8. The wastewater treatment system according to claim 5, characterized in that, The second support member has a partition plate inside, which divides the internal chamber of the second support member into upper and lower spaces. The upper space is used as a sewage tank to hold sewage, and the lower space is used as the clean water tank. The first support member, the first filter module and the second filter module are disposed in the sewage tank.

9. The wastewater treatment system according to any one of claims 6-8, characterized in that, The wastewater treatment system further includes a first liquid level detection module, which is disposed inside the first support member and is used to detect the liquid level in the first support member. And / or, The wastewater treatment system also includes a second liquid level detection module, which is located inside the second support member and is used to detect the liquid level in the second support member.

10. A road cleaning vehicle, characterized in that, include: The cleaning vehicle itself; The wastewater treatment system according to any one of claims 1-9, wherein the wastewater treatment system is disposed on the cleaning vehicle body; A flushing module is connected to the clean water tank to obtain clean water from the tank and clean the road.

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