Reclaimed water recycling device for high-speed service area

Abstract

The invention relates to the technical field of reclaimed water recycling, and particularly discloses a high-speed service area reclaimed water recycling device which comprises a machine shell, the machine shell comprises a machine shell top, a side wall, a bottom plate and a cabinet door, a mounting frame is arranged on the central axis of the bottom plate of the machine shell, and a fiber membrane pipe communicated with a water inlet pipe is arranged on one side of the mounting frame; the fiber membrane pipe is sequentially communicated with an activated carbon filter, a manganese sand filter and a precision filter, a reverse osmosis pipe communicated with the water outlet pipe is transversely mounted on the other side of the fiber membrane pipe, the precision filter is communicated with the reverse osmosis pipe, and a pipeline mixer capable of sucking air from the environment is arranged between the activated carbon filter and the manganese sand filter; and the pipeline mixer is connected with a sodium hypochlorite generator.

Description

Technical Field

[0001] The present invention relates to the technical field of reclaimed water reuse, and in particular to a reclaimed water reuse device in a highway service area. Background Art

[0002] While providing convenient services to drivers and passengers, highway service areas also face increasing water demands. Water supply in service areas is generally divided into two categories: 1. Service areas near urban or rural water plants can rely on their water supply; 2. Service areas located far from cities, towns, or villages face difficulties in sourcing water, and typically rely on self-built water supply systems, using groundwater or surface water. However, these self-built water supply systems are affected by the availability of water sources at the service area's location. The groundwater or surface water sources themselves are affected by climate, resulting in seasonal fluctuations in water levels and water supply, leading to indirect water shortages in these service areas.

[0003] In order to ensure water supply in water-scarce service areas, these service areas usually use reclaimed water reuse technology to treat the domestic wastewater in the service stations for reuse. For example, the patent document with application number CN201610371445.X discloses a highway service area sewage treatment device and method, which is equipped with multiple biochemical reaction pools and filtration tanks, and uses a combination of "biochemical and physical-chemical" methods to treat the wastewater, and finally obtain reclaimed water that can be reused.

[0004] The above technology treats wastewater in service areas for reuse, alleviating water shortages in highway service areas. However, trucks traveling on highways require brake water replenishment at service areas. Brake water typically refers to the water in the brake spray system used on heavy trucks. The system sprays water onto the brake drum, utilizing the heat absorbed by evaporation to reduce the drum temperature, thereby ensuring braking safety. If the spray system's water is depleted and not promptly replenished at the service area, the brake drum temperature will overheat during braking, leading to brake failure. In severe cases, tire spontaneous combustion may occur due to inadequate heat dissipation, posing a risk. Therefore, service areas typically provide brake water replenishment services for trucks to ensure sufficient brake water for highway travel. However, service areas with their own water supply systems cannot guarantee a sufficient supply of fresh water when water is scarce. The recycled water used in existing technologies is simply treated as wastewater, reaching the level of miscellaneous water suitable for watering, washing floors, and cleaning. However, as brake spray water, the chemicals or microorganisms it contains easily adhere to the nozzles of the spray system. Over time, the nozzle openings become smaller and smaller, and may even clog the nozzles of the spray system, affecting the water spray effect and even damaging system components. Furthermore, the grey water contains a large amount of metal ions, which can corrode the metal components of the brake system, causing damage to the entire brake system. Therefore, in water-scarce service areas, some trucks encounter only grey water and are unable to replenish qualified brake spray water in the service area in a timely manner. They do not want to damage their brake components by using grey water, so they can only take a chance and risk driving to the next service area to replenish water. However, during this process, the trucks are often unable to dissipate heat in time when braking due to the lack of brake spray water, leading to accidents. Therefore, the market urgently needs a method to treat the recycled grey water to meet the brake water requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-speed service area reclaimed water recycling device to solve the technical problem mentioned above that the existing technology of high-speed service area reclaimed water recycling technology cannot treat the metal salts in the wastewater, so the recycled reclaimed water cannot meet the brake spray water requirements, making it impossible for trucks to replenish brake spray water in the service area in time.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is as follows: A high-speed service area reclaimed water reuse device includes an organic shell, the shell includes an organic shell top, side walls, a bottom plate and a cabinet door, a mounting frame is provided on the central axis of the bottom plate of the shell, a fiber membrane tube connected to the water inlet pipe is provided on one side of the mounting frame, the fiber membrane tube is connected to the activated carbon filter, the manganese sand filter, and the precision filter in sequence, a reverse osmosis tube connected to the water outlet pipe is horizontally installed on the other side of the mounting frame, the precision filter is connected to the reverse osmosis tube, a pipeline mixer that can inhale air from the environment is provided between the activated carbon filter and the manganese sand filter, and the pipeline mixer is connected to a sodium hypochlorite generator.

[0007] The beneficial effects of this embodiment are:

[0008] There are two main reasons why recycled greywater cannot be used as brake spray water. First, it contains large amounts of manganese and iron ions. These ions form galvanic cells on the surfaces of metal components in the brake system, corroding them and causing them to rust, rapidly reducing their service life. Second, recycled greywater can easily form scale in the spray system, clogging the spray nozzles. Scale formation is not solely due to excessive supersaturation of inorganic salts in the water. Organic matter and microorganisms can also serve as scale nuclei. Substances such as organic matter and proteins adsorb onto the surfaces of pipes and equipment, forming organic films, while microorganisms such as bacteria and algae form biofilms. These organic and biofilms promote scale deposition. Therefore, if recycled greywater is to be used as brake spray water, it must be filtered to remove metal ions such as iron and manganese, and sterilized. Existing water treatment technologies typically use manganese sand filtration to remove iron and manganese ions, while sodium hypochlorite disinfection is commonly used to remove bacteria and microorganisms. A simple combination of the two approaches involves filtering the recycled water with manganese sand before sterilizing it with sodium hypochlorite. This approach results in a virtually free treatment of manganese, iron, and bacteria in the recycled water. While the recycled water can be used as brake spray water, it was discovered that the decomposition of sodium hypochlorite in water produces chloride ions, which act as a catalyst for metal corrosion. For iron (Fe), chloride ions destroy the oxide film on the iron surface, promoting its oxidation (forming Fe2+ / Fe3+), which leads to rust. For stainless steel, chloride ions can cause pitting or stress corrosion cracking (especially at high temperatures or concentrations). For copper and aluminum, chloride ions react with the metal to form soluble chlorides (such as CuCl2 and AlCl3), exacerbating corrosion. Therefore, while this simple combination removes metal ions like iron and manganese, as well as microorganisms like bacteria, the introduced chloride ions can still corrode the metal components of the brake system. Therefore, simply combining the two cannot make the recycled water suitable for use as brake spray water. The chloride ions in the recycled water must also be removed. How to remove the chloride ions becomes the key to using the recycled water for brake spray water. Therefore, the device of this application includes a reverse osmosis tube, which uses a reverse osmosis membrane to ensure the removal of chloride ions, making the recycled water suitable for use as brake spray water.

[0009] 2. Adding a reverse osmosis tube for final filtration does ensure that the recycled water is chloride-free, but sodium hypochlorite must be added for sterilization. The recycled water from highway service stations is wastewater used for daily use, and its water quality fluctuates. However, the amount of sodium hypochlorite added is constant, which prevents it from being completely consumed. Consequently, the recycled water entering the reverse osmosis tube often contains a large amount of residual chlorine. Residual chlorine refers to free chlorine, such as hypochlorous acid and hypochlorite, produced by unconsumed sodium hypochlorite in the recycled water. These substances are highly oxidizing. Reverse osmosis membranes are made of polyamide or other polymer materials and are very sensitive to oxidants. Oxidants can cause degradation of the membrane material, thereby affecting the membrane's separation performance and service life. To this end, the present application arranges a sodium hypochlorite generator between an activated carbon filter and a manganese sand filter. Sodium hypochlorite sterilizes and disinfects the bacteria in the wastewater. When residual chlorine is present in the water quality fluctuation, residual chlorine will follow the wastewater into the manganese sand filter. Residual chlorine will pre-oxidize the manganese and iron ions in the wastewater. Pre-oxidation can completely consume residual chlorine, thus preventing residual chlorine from entering the reverse osmosis tube and damaging the reverse osmosis membrane. The pre-oxidation of residual chlorine can enhance the removal effect of manganese sand filter on manganese and iron ions. After multiple tests, it has been proven that residual chlorine can significantly enhance the manganese removal effect after pre-oxidation. The effluent manganese removal rate is as high as more than 90%. Therefore, the present application arranges a sodium hypochlorite generator between an activated carbon filter and a manganese sand filter. This can cope with the water quality fluctuation of the wastewater. Sodium hypochlorite cannot be completely consumed, resulting in the problem that residual chlorine damages the reverse osmosis membrane. The filtering effect of the manganese sand filter on iron and manganese ions can be enhanced again, killing two birds with one stone.

[0010] 3. The principle of manganese sand intercepting iron and manganese ions is to oxidize the iron and manganese ions in the wastewater into high-valent ions and turn them into precipitates, such as oxidizing divalent iron ions to form ferric hydroxide precipitates. Therefore, when adding sodium hypochlorite, this application is also designed with a pipeline mixer that can inhale air. The pipeline mixer is used to inhale air from the environment, and the oxygen in the air is used to enhance the oxidation effect of sodium hypochlorite and manganese sand, further improving the interception and sterilization effect of the manganese sand filter on iron and manganese ions.

[0011] Furthermore, a tee is provided in front of the pipeline mixer, the tee is connected to the sodium hypochlorite generator, and the pipeline mixer is a porous gas injection type with a Venturi structure.

[0012] Furthermore, the manganese sand filter includes a manganese sand chamber and a retention chamber. Manganese sand is placed in the manganese sand chamber, and modified quartz sand with a manganese active filter membrane on its surface is placed in the retention chamber. The modified quartz sand with the manganese active filter membrane has a higher strength due to its internal quartz sand structure. When located at the bottom of the filter, it is not easily crushed by pressure, and its particle size is stable. The filter pores formed are stable and are not easily crushed and clogged.

[0013] Furthermore, the particle size of the manganese sand is 1.0-1.5mm, and the particle size of the modified quartz sand is 0.3-0.6mm. Utilizing a gradient design, the upper layer of manganese sand has a large particle size, while the lower layer of modified quartz sand has a small particle size, making it less likely to clog the manganese sand filter. Furthermore, when the iron and manganese ions in the wastewater are filtered by the manganese sand, the dissolved oxygen in the wastewater oxidizes Fe2 to Fe3 and Mn2+ to MnO2 or MnO4 under the catalysis of the manganese sand (mainly composed of MnO2). The ferric hydroxide (Fe(OH)3) generated by the trivalent iron usually forms larger flocculent particles, which are easily intercepted by the large-grained manganese sand to form a better filter layer. Small particles of manganese dioxide (MnO2) flow into the interception cavity and are adsorbed by the modified quartz sand. Some flocculent iron-manganese oxides adhere to the surface, further strengthening the manganese-active filter membrane on the surface of the modified quartz sand and achieving stable removal of manganese in the wastewater.

[0014] Furthermore, the manganese sand filter uses a layered sieve plate with a flat structure to separate the upper manganese sand cavity and the lower retention cavity.

[0015] Furthermore, the manganese sand filter uses a cylindrical layered sieve plate to separate the filter into a casing structure, forming a manganese sand cavity near the center of the cavity and a retention cavity on the periphery.

[0016] Furthermore, the activated carbon filter is vertically mounted on the bottom plate of the housing and includes an activated carbon inlet pipe and an activated carbon outlet pipe. The inlet pipe extends to the bottom of the activated carbon filter, while the outlet pipe is located at the top of the activated carbon filter. Wastewater enters the activated carbon filter from the bottom and utilizes overflow filtration. This allows particulate matter to be adsorbed by the activated carbon and also affected by gravity, making it less likely to pass through the activated carbon filter, thereby enhancing the filtration effect.

[0017] Furthermore, a water inlet pump is provided between the water inlet pipe and the fiber membrane tube, and the water inlet pump and the membrane tube are non-coaxially installed in an offset manner.

[0018] Furthermore, the reverse osmosis pipes are arranged in parallel using a plurality of vertical pipes, and a pressure regulating pump is provided in front of the vertical pipes. The pressure in front of the reverse osmosis pipes can be freely adjusted by the pressure regulating pump, and the number of reverse osmosis pipes can be adjusted according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the present invention after removing the cabinet door.

[0020] Figure 2 This is a schematic diagram of the structure of the present invention without the top cover of the casing.

[0021] Figure 3 This is a structural diagram of the present invention without the casing.

[0022] Figure 4This is a top view of the present invention after removing the casing.

[0023] Figure 5 This is a schematic diagram of the structure of the manganese sand filter in Example 1.

[0024] Figure 6 This is a schematic diagram of the structure of the manganese sand filter in Example 2. DETAILED DESCRIPTION

[0025] The following is further described in detail through specific implementation methods:

[0026] The figure marks in the drawings of the specification include: casing 1, mounting frame 2, water inlet pump 3, water inlet pipe 31, oblique water inlet pipe 32, fiber membrane tube 4, connecting block 41, activated carbon water inlet pipe 51, activated carbon filter 5, activated carbon water outlet pipe 52, manganese sand filter 6, water injection chamber 61, layered sieve plate 62, manganese sand water inlet pipe 63, manganese sand water outlet pipe 64, precision filter 7, pressure regulating pump 8, reverse osmosis pipe 9, water outlet pipe 91, mounting bracket 92, mixing pipe 10, sodium hypochlorite generator 11, sodium hypochlorite addition pipe 12.

[0027] Implementation example Figure 1-6 As shown:

[0028] Example 1

[0029] A water recycling device for a highway service area includes a housing 1. The housing 1 is a rectangular shell welded from stainless steel plates, with a space for installing a filtering device formed inside. Cabinet doors (not shown in the figure) are provided at the front and back of the housing 1 to open the interior space. Door frames for installing the cabinet doors are left on the housing 1, and a double-door structure is set up by hinges, and the cabinet doors are provided with latches.

[0030] A mounting frame 2 is provided in the middle of the housing 1. The mounting frame 2 is a rectangular frame welded from square steel pipes, with multiple supports welded vertically inside the frame. The lower end of the mounting frame 2 is fixed to the bottom plate of the housing 1 by welding, including but not limited to welding. The mounting frame 2 is provided on the front and rear axis of the housing 1, dividing the interior space of the housing 1 into two. Figure 2 Direction is the description direction, Figure 2 The lower left corner is the front, and the front side of the mounting frame 2 is vertically installed with a fiber membrane tube 4, an activated carbon filter 5, a manganese sand filter 6, and a precision filter 7 from right to left. A reverse osmosis tube 9 is installed horizontally on the rear side of the mounting frame 2, and a pressure regulating pump 8 is installed on the left side of the reverse osmosis tube 8.

[0031] When the wastewater is treated by the water reuse device in this application, the wastewater flows in the order described. The wastewater flows into the water inlet pipe 31, is pressurized by the water inlet pump 3, and then enters the fiber membrane tube 4. However, in this application, the water inlet pump 3 and the fiber membrane tube 4 are non-coaxially installed. Figure 2As shown, the water pump 3 and the fiber membrane tube 4 are not on the same axis in the front and back. Therefore, an inclined water pipe 32 is provided between the water inlet pump 3 and the fiber membrane tube 4. The inclined water pipe 32 is used to connect the water inlet position to the fiber membrane tube 4 in the same axis.

[0032] The mounting frame 2 is welded with a connecting block 41, which is provided with a horizontal mounting plate with mounting holes. The mounting bolts on the fiber membrane tube 4 are connected to the mounting holes on the connecting block 41 to suspend the fiber membrane tube 4 in the front side of the mounting frame 2. The fiber membrane inside the fiber membrane tube 4 is made of a high-strength polymer (such as polypropylene, PVDF) and has a sponge-like through-hole structure with a pore size range of approximately 10-50μm. Therefore, after the wastewater enters the fiber membrane tube 4, large particles in the wastewater will be trapped in the fiber membrane tube, removing floating objects and large particles suspended in the wastewater.

[0033] After coarse filtration through the fiber membrane tube 4, the wastewater enters the activated carbon filter 5 directly through the activated carbon inlet pipe 51. The activated carbon filter 5 is a cylindrical container with a curved top cover. The top of the top cover is penetrated by the activated carbon inlet pipe 51 and connected to the activated carbon outlet pipe 52 on the side. The activated carbon inlet pipe 51 penetrates the top cover and extends into the activated carbon filter 5, with the nozzle directly reaching the bottom of the activated carbon filter 5. The activated carbon water inlet pipe 51 and the water outlet pipe of the fiber membrane tube 4 are one pipe, so after the wastewater comes out of the fiber membrane tube 4, it directly enters the bottom of the activated carbon filter 5, and the activated carbon filter 5 is filled with activated carbon, so the wastewater flows out directly from the bottom of the activated carbon filter 5 through the activated carbon water inlet pipe 51. In order to ensure that the activated carbon does not block the pipe mouth of the activated carbon water inlet pipe 51, a screen is provided at the pipe mouth to protect the pipe mouth, forming a water outlet space. As the water body becomes more and more, the wastewater accumulates in the activated carbon filter 5 and passes upward through the filled activated carbon filter layer. The adsorption properties of the activated carbon are used to adsorb small particles in the wastewater that are not filtered by the fiber membrane tube 4. When it reaches the top cover position of the activated carbon filter 5, it flows out from the activated carbon water outlet pipe 52 connected to the side of the top cover of the activated carbon filter 5 and flows to the manganese sand filter 6.

[0034] A pipeline mixer 10 is located between the activated carbon filter 5 and the manganese sand filter 6. This mixer is a porous gas injection type with a Venturi structure, specifically a Mazzei jet mixer. Its inherent Venturi structure allows it to draw air from the surrounding environment. A sodium hypochlorite addition pipe 12 is connected to the pipe preceding the mixer 10 via a tee, which is then connected to a sodium hypochlorite generator 11. Therefore, after the water exits the activated carbon filter 5, it is mixed with the sodium hypochlorite produced by the sodium hypochlorite generator 11 in the pipeline mixer 10. After mixing, the water flows into the manganese sand filter 6. The sodium hypochlorite generator can be a YDKJYW-100 model. Its built-in dosing electric valve and water pump are linked to the water inlet pump 3. That is, when the water inlet pump 3 starts, the sodium hypochlorite generator's dosing electric valve and water pump automatically open, ensuring consistency in the dosing and water treatment processes.

[0035] like Figure 5 As shown, the manganese sand filter 6 adopts a vertical structure. The manganese sand filter 6 is heavy and difficult to fall down. The vertical structure is installed so that manganese sand can be poured into the top of the manganese sand filter 6 to solve its installation problem. The appearance of the manganese sand filter 6 is exactly the same as that of the activated carbon filter 5, and the connection of the pipeline is also the same. The main difference between the manganese sand filter 6 and the activated carbon filter 5 is that a layered sieve plate 62 with a flat structure is provided inside the manganese sand filter 6. The layered sieve plate 62 separates the manganese sand filter 6 into an upper manganese sand cavity and a lower retention cavity. The upper part of the manganese sand cavity and the position of the water inlet form a water injection cavity 61. Manganese sand with a particle size of 1.0-1.5mm needs to be put into the manganese sand cavity, and homogeneous fine sand with a particle size of 0.3-0.6mm needs to be put into the retention cavity. Modified quartz sand with a porosity of about 40-45% is used. Modified quartz sand refers to quartz sand immersed in potassium permanganate (KMnO4) solution, and a manganese active filter membrane is generated on the surface by chemical deposition. Modified quartz sand is used to retain manganese dioxide particles flowing out of the manganese sand.

[0036] It is worth noting that the manganese sand inlet pipe 63 of the manganese sand filter 6 is a pipe connected to the side of the top cover, and the manganese sand outlet pipe 64 is a pipe vertically extending into the bottom of the manganese sand filter 6, which is exactly opposite to the activated carbon filter 5. Therefore, when the wastewater enters the manganese sand filter 6, it will first enter the water injection chamber 61 from the pipe opening on the side wall of the top cover of the manganese sand filter 6, and flow downward from the water injection chamber 61 to reach the manganese sand chamber. Under the catalysis of manganese sand (mainly composed of MnO2), the dissolved oxygen in the water oxidizes Fe2 into Fe3+, which is then hydrolyzed to form an insoluble iron hydroxide precipitate (Fe(OH)3). The reaction formula is as follows: 4Fe 2+ +3O2+6H2O→4Fe(OH)3↓; and the manganese ions (Mn2+) in the wastewater: Mn2+ is oxidized to MnO2 or Mn3O4, forming solid: 2Mn 2+ +O2+2H2O→2MnO2↓+4H+ . In the manganese sand filter layer, iron hydroxide (Fe(OH)3) usually forms larger flocculent particles, which are easily intercepted by physical filtration. The particles of manganese dioxide (MnO2) are smaller. Since the particle size of the manganese sand used in this application is 1.0-1.5mm, its particle size is too large and the adsorption of manganese dioxide particles is insufficient, so it is easy to flow out of the manganese sand cavity. This application sets an interception cavity under the manganese sand layer. Since modified quartz sand is set in the interception cavity, the modified quartz sand has a manganese active filter membrane on the surface, which makes it easier to adsorb manganese dioxide. The particle size of the modified quartz sand is 0.3-0.6mm, which is smaller. Therefore, more than 95% of the manganese dioxide can be completely intercepted in the interception cavity, and the manganese active filter membrane that adsorbs a large amount of manganese dioxide can also improve the adsorption of manganese ions by the manganese sand filter.

[0037] After the wastewater is filtered by the manganese sand filter 6, it flows out from the manganese sand outlet pipe 64 and flows directly into the precision filter 7. A PP cotton filter element (polypropylene melt-blown filter element) is provided in the precision filter 7. It adopts a gradient density structure and an outer layer with a pore size of 5μm to intercept quartz sand and manganese sand particles that may flow out of the manganese sand filter. The inner layer adopts a pore size of 1μm to finely filter finer particles and extend the service life.

[0038] After the wastewater flows through the precision filter 7, it flows out from the outlet pipe of the precision filter 7, and enters the reverse osmosis pipe 9 after the water pressure is adjusted by the pressure-regulating pump 8. The reverse osmosis pipe 9 is installed horizontally, and a mounting bracket 92 is horizontally welded on the mounting frame 2. A clamp structure is set at the end of the mounting bracket 92, and the reverse osmosis pipe is installed horizontally by using the clamp decoupling strand. Several reverse osmosis pipes 9 can be installed from top to bottom, and vertical pipes are used at both ends for parallel connection. The wastewater filtered by the reverse osmosis pipe 9 flows out from the outlet pipe 91, achieving the reuse of recycled water that can be used as brake spray water.

[0039] Example 2

[0040] The difference between Example 2 and Example 1 is the internal structure of the manganese sand filter 6, as shown in FIG. Figure 5 As shown, the appearance of the manganese sand filter 6 in Example 2 is exactly the same as that of the activated carbon filter 5, but its interior is a sleeve structure, which divides the manganese sand filter 6 into three concentric cylindrical cavities, the center of which is a water injection chamber 61, the outer periphery of the water injection chamber 61 is a manganese sand chamber, the outer periphery of the manganese sand chamber is a retention chamber, and the outer periphery of the manganese sand chamber is a retention chamber separated by a cylindrical layered sieve plate 62. The layered sieve plate 62 has the same partition structure as the water injection chamber 61, and its upper surface is provided with a large number of holes for wastewater to pass through.

[0041] The above is only an embodiment of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A water recycling device for a highway service area, comprising a housing, wherein the housing comprises a housing top, side walls, a bottom plate, and a cabinet door, characterized in that: A mounting bracket is provided on the central axis of the bottom plate of the casing, and a fiber membrane tube connected to the water inlet pipe is provided on one side of the mounting bracket. The fiber membrane tube is connected to an activated carbon filter, a manganese sand filter, and a precision filter in sequence. A reverse osmosis tube connected to the water outlet pipe is installed horizontally on the other side, and the precision filter is connected to the reverse osmosis tube. A pipeline mixer that can inhale air from the environment is provided between the activated carbon filter and the manganese sand filter, and the pipeline mixer is connected to a sodium hypochlorite generator.

2. The high-speed service area water recycling device according to claim 1 is characterized in that: A tee is provided in front of the pipeline mixer, which is connected to the sodium hypochlorite generator. The pipeline mixer is a porous gas injection type with a Venturi structure.

3. The high-speed service area water recycling device according to claim 1 is characterized in that: The manganese sand filter comprises a manganese sand cavity and a retention cavity. Manganese sand is put into the manganese sand cavity, and modified quartz sand with a manganese active filter membrane on the surface is put into the retention cavity.

4. The high-speed service area water recycling device according to claim 3 is characterized by: The particle size of the manganese sand is 1.0-1.5 mm, and the particle size of the modified quartz sand is 0.3-0.6 mm.

5. The high-speed service area water recycling device according to claim 3 is characterized by: The manganese sand filter uses a layered sieve plate with a flat plate structure to separate an upper manganese sand cavity and a lower retention cavity.

6. The high-speed service area water recycling device according to claim 3, characterized in that: The manganese sand filter uses a cylindrical layered sieve plate to separate the filter into a casing structure, thereby forming a manganese sand cavity near the center of the cavity and an interception cavity on the periphery.

7. The high-speed service area water recycling device according to claim 1, characterized in that: The activated carbon filter is vertically arranged on the bottom plate of the casing, and the activated carbon filter includes an activated carbon water inlet pipe and an activated carbon water outlet pipe. The pipe mouth of the activated carbon water inlet pipe reaches the bottom of the activated carbon filter, and the pipe mouth of the activated carbon water outlet pipe is at the top of the activated carbon filter.

8. The high-speed service area water recycling device according to claim 1, characterized in that: A water inlet pump is provided between the water inlet pipe and the fiber membrane tube, and the water inlet pump and the membrane tube are non-coaxially staggeredly installed.

9. The high-speed service area water recycling device according to claim 1, characterized in that: A plurality of reverse osmosis pipes are arranged in parallel using vertical pipes, and a pressure regulating pump is arranged in front of the vertical pipes.

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