Fabricated wastewater treatment device and method

Abstract

The invention belongs to the technical field of wastewater treatment, and discloses an assembly type wastewater treatment device and method.The assembly type wastewater treatment device is arranged between an outer wall of a roadside building and a road; comprising a wall-side water storage system, wall-side filling soil, a wall-side filtering facility, a water storage and drainage system, a road-side filtering facility, road-side filling soil and a road-side water storage system which are sequentially arranged from an outer wall of a road-side building to a road; outdoor rainwater and indoor wastewater in a roadside building area are collected through the wall-side water storage system, rainwater and wastewater in a road area are collected through the roadside water storage system, the rainwater and the wastewater are filtered through filling and filtering facilities and then introduced into a water storage and drainage system, effective treatment and resource utilization of wastewater in non-rainy seasons are achieved, and the utilization rate of rainwater is increased. The seasonal function limitation is effectively overcome; by integrating indoor and outdoor wastewater treatment systems, the maximum utilization of resources is realized, and the wastewater treatment efficiency and economy are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wastewater treatment, and in particular relates to an assembled wastewater treatment device and method. Background Art

[0002] With the rapid development of industrialization and urbanization, urban rainwater treatment and resource utilization have become important issues in the field of environmental protection. When using traditional wastewater treatment technology to treat urban rainwater, there are often problems such as low efficiency, high cost and complex construction process. In order to solve the above problems, some people have explored more efficient, environmentally friendly and economical wastewater treatment technologies.

[0003] As an ecological engineering means, bioretention facilities utilize organisms, soil, and plants in natural ecosystems to naturally purify wastewater. They can effectively remove pollutants such as suspended solids, organic matter, and nutrients in rainwater, and are eco-friendly, playing a unique role in urban rainwater management.

[0004] However, existing urban rainwater management devices based on bioretention facilities often have problems such as limited seasonal functions, insufficient rainwater treatment and resource utilization, and high construction difficulty when they are actually used. Specifically, traditional bioretention facilities can effectively treat rainwater in the rainy season, but it is difficult for them to perform their functions in the non-rainy season, resulting in waste of resources and idle facilities. Secondly, indoor wastewater is usually discharged directly into the municipal pipe network, and bioretention facilities are not effectively used for treatment and resource utilization, thus missing the opportunity for wastewater resource utilization. In addition, the construction of existing bioretention facilities usually requires on-site pouring, which has a long construction period, high cost, and difficulty in subsequent maintenance and upgrading. Summary of the invention

[0005] In response to the technical problems existing in the prior art, the present invention provides an assembled wastewater treatment device and method to solve the technical problems of existing urban rainwater management devices based on biological retention facilities in actual applications, such as limited seasonal functions, insufficient rainwater treatment and resource utilization, and high construction difficulty.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides an assembled wastewater treatment device, which is arranged between the outer wall of a roadside building and the road, and comprises a wall-side water storage system, wall-side filling, wall-side filtering facilities, a water storage and drainage system, a roadside filtering facility, a roadside filling and a roadside water storage system, which are arranged in sequence from the outer wall of the roadside building to the road; The wall-side water storage system is used to receive and store wastewater from the roadside building area; wherein the wastewater from the roadside building area includes outdoor rainwater and indoor wastewater; the wall-side water storage system is provided with a wall-side overflow port, so that the wastewater in the wall-side water storage system overflows to the wall-side fill; the wall-side filtering facility is used to grade and filter the wastewater flowing through the surface of the wall-side fill, and allow the filtered wastewater to flow into the storage and drainage system; The roadside water storage system is used to receive and store wastewater in the road area; wherein, the roadside water storage system is provided with a roadside overflow outlet so that the wastewater in the roadside water storage system can overflow to the roadside fill; the roadside filtering facility is used to grade and filter the wastewater flowing through the surface of the roadside fill, and allow the filtered wastewater to flow into the water storage and drainage system.

[0007] Furthermore, the wall-side water storage system includes a rainwater pipe, a wall-side water storage tank, an indoor wastewater diversion pipe and a sewage pipe; The rainwater pipe is vertically installed on the outside of the outer wall of the roadside building; the wall-side water storage tank is arranged on the outside of the bottom of the outer wall of the roadside building and is located below the lower water outlet of the rainwater pipe; a wall-side overflow port is opened at the top of the outer wall of the wall-side water storage tank, and the wall-side overflow port is arranged near one end of the wall-side fill; One end of the indoor wastewater diversion pipe is connected to the middle and upper part of the inner wall of the wall-side water storage tank, and the other end of the indoor wastewater diversion pipe passes through the outer wall of the roadside building and is connected to the indoor wastewater pipe of the roadside building; one end of the sewage pipe is connected to the bottom end of the inner wall of the wall-side water storage tank, and the other end of the sewage pipe passes through the outer wall of the roadside building and is connected to the indoor sewage pipe of the roadside building.

[0008] Furthermore, the wall side fill includes the wall side fill body, wall side shrubs and wall side aquatic plants; The wall-side earthfill body is formed by filling soil and is arranged obliquely between the wall-side water storage system and the wall-side filtering facility; wherein the side of the wall-side earthfill body close to the wall-side water storage system is higher than the side of the wall-side earthfill body close to the wall-side filtering facility, and the side of the wall-side earthfill body close to the wall-side water storage system is lower than the wall-side overflow port; The wall-side shrubs and the wall-side aquatic plants are both planted on the surface of the wall-side fill body. The wall-side shrubs are planted close to the wall-side water storage system, and the wall-side aquatic plants are planted close to the wall-side filtering facility.

[0009] Furthermore, the wall-side fill also includes a wall-side sprinkler, a wall-side water pump and a wall-side connecting water pipe; the water inlet end of the wall-side connecting water pipe is connected to the drainage system, the water outlet end of the wall-side connecting water pipe extends upward from the bottom surface of the wall-side fill body to the top surface of the wall-side fill body, and is placed between the wall-side shrubs and the wall-side aquatic plants; the water inlet end of the wall-side water pump is connected to the water outlet end of the wall-side connecting water pipe, and the wall-side sprinkler is installed at the water outlet end of the wall-side water pump.

[0010] Furthermore, the wall-side filtration facility and the road-side filtration facility have the same structure, and both adopt a cascade filtration facility; wherein the cascade filtration facility includes a filtration facility foundation, a fender, a coarse-pore filter plate, a fine-pore filter plate, an ultrafine-pore filter plate, a gravel mesh gabion, a crushed stone mesh gabion, and an activated carbon mesh cage; The filter facility foundation is arranged between the wall-side fill and the water storage and drainage system or between the road-side fill and the water storage and drainage system, and the top surface of the filter facility foundation is arranged inclined; wherein the top end of the top surface of the filter facility foundation is arranged close to the wall-side fill or one side of the road-side fill, and the bottom end of the top surface of the filter facility foundation is arranged close to one side of the water storage and drainage system; The mudguard, the coarse-pore filter plate, the fine-pore filter plate and the ultrafine-pore filter plate are all vertically arranged on the top surface of the filter facility foundation and are spaced from the top end to the bottom end of the top surface of the filter facility foundation; The gravel mesh box gabion, the crushed stone mesh box gabion and the activated carbon mesh box cage are all placed above the top surface of the filtration facility foundation; wherein the gravel mesh box gabion is arranged between the mudguard and the coarse-pore filter plate, the crushed stone mesh box gabion is arranged between the coarse-pore filter plate and the fine-pore filter plate, and the activated carbon mesh box cage is arranged between the fine-pore filter plate and the ultra-fine-pore filter plate.

[0011] Furthermore, the upper part of the mudguard is uniformly provided with first holes, the lower part of the coarse-pore filter plate is uniformly provided with second holes, the lower part of the fine-pore filter plate is uniformly provided with third holes, and the lower part of the ultrafine filter plate is uniformly provided with fourth holes; wherein the outer side of the lower part of the ultrafine filter plate is wrapped with a reverse osmosis membrane.

[0012] Furthermore, the water storage and drainage system includes a first water storage tank, a drainage ditch and a second water storage tank; the first water storage tank is arranged near one side of the wall-side filtering facility, and is used to receive and store the wastewater filtered by the wall-side filtering facility; The second water reservoir is close to one side of the roadside filtering facility, and is used to receive and store the wastewater filtered by the roadside filtering facility; the drainage ditch is arranged between the first water reservoir and the second water reservoir, and is used to divert the wastewater received in the first water reservoir and the second water reservoir to the sewage pipe.

[0013] Furthermore, the roadside water storage system includes a roadside water retaining plate and a roadside water storage tank; The roadside baffle is arranged at the edge of the road and along the extension direction of the road; wherein, a water through hole is provided on the roadside baffle; the roadside water storage tank is arranged on the side of the road and is flush with the bottom end of the roadside baffle; wherein, a roadside overflow port is provided at the top end of the outer wall of the roadside baffle, and the roadside overflow port is arranged close to one end of the roadside fill.

[0014] Furthermore, filter screens are installed at both the wall-side overflow outlet and the road-side overflow outlet.

[0015] The present invention also provides an assembled wastewater treatment method, using the assembled wastewater treatment device; Wherein, the assembled wastewater treatment method comprises: During the rainy season, outdoor rainwater from the roadside building area is introduced into the wall-side water storage system, and then enters the water storage and drainage system after passing through the wall-side fill and the wall-side filtration facilities. At the same time, wastewater from the road area flows into the roadside water storage system, and then enters the water storage and drainage system after passing through the roadside fill and the roadside filtration facilities. During the non-rainy season, the indoor wastewater from the roadside building area is introduced into the wall-side water storage system. The indoor wastewater then passes through the wall-side fill and wall-side filtration facilities before entering the water storage and drainage system.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The assembled wastewater treatment device and method provided by the present invention sequentially arranges a wall-side water storage system, wall-side backfill, wall-side filtering facilities, a water storage and drainage system, a road-side filtering facility, a road-side backfill and a road-side water storage system between the outer wall of a road-side building and the road; collects outdoor rainwater and indoor wastewater in the road-side building area through the wall-side water storage system, collects rainwater and wastewater in the road area through the road-side water storage system, and introduces the wastewater into the water storage and drainage system after filtering and treatment by backfill and filtering facilities, thereby realizing effective treatment and resource utilization of wastewater in the non-rainy season, and effectively overcoming seasonal functional limitations; by integrating indoor and outdoor wastewater treatment systems, it realizes maximum utilization of resources, improves the efficiency and economy of wastewater treatment, and provides an innovative solution for urban wastewater treatment and resource utilization; through assembled design, it simplifies the construction process, shortens the construction period, reduces construction costs, and improves the convenience of system maintenance and upgrade. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the assembled wastewater treatment device provided by the present invention; Figure 2 It is a structural schematic diagram of the cascade filtration facility in the present invention; Figure 3 It is a schematic diagram of the main structure of the cascade filtration facility in the present invention; Figure 4 It is a structural schematic diagram of the water storage and drainage system in the present invention; Figure 5 It is a structural schematic diagram of the wall side water storage system in the present invention; Figure 6 It is a structural schematic diagram of the roadside water storage system of the present invention.

[0018] Among them, 1 wall side water storage system, 2 wall side fill, 3 wall side filtration facilities, 4 storage and drainage system, 5 road side filtration facilities, 6 road side fill, 7 road side water storage system, 8 road side building exterior wall, 9 road; 101 rainwater pipe, 102 wall side water storage tank, 103 indoor wastewater diversion pipe, 104 diversion pipe switch, 105 diversion pipe electric valve, 106 sewage pipe, 107 sewage pipe switch, 108 sewage pipe electric valve, 109 sewage pump, 110 wall side rainwater grate, 111 wall side overflow filter, 112 diversion pipe reserved hole, 113 sewage pipe reserved hole; 201 wall side fill body, 202 wall side shrubs, 203 wall side aquatic plants, 204 wall side sprinkler Head, 205 wall side water pump, 206 wall side connecting water pipe; 301 filtration facility foundation, 302 mud guard, 303 coarse-pore filter plate, 304 fine-pore filter plate, 305 ultrafine filter plate, 306 gravel mesh gabion, 307 crushed stone mesh gabion, 308 activated carbon mesh cage; 401 the first water reservoir, 402 drainage ditch, 403 the second water reservoir, 404 drainage ditch water pump; 601 roadside fill body, 602 roadside shrubs, 603 roadside aquatic plants, 604 roadside sprinkler, 605 roadside water pump, 606 roadside connecting water pipe; 701 roadside water retaining board, 702 roadside water storage tank, 703 roadside overflow filter, 704 roadside rainwater grate. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] As attached Figure 1-6As shown, the present invention provides an assembled wastewater treatment device, which is arranged between the outer wall 8 of a roadside building and a road 9; the assembled wastewater treatment device includes a wall-side water storage system 1, a wall-side backfill 2, a wall-side filtering facility 3, a storage and drainage system 4, a road-side filtering facility 5, a road-side backfill 6 and a road-side water storage system 7; the wall-side water storage system 1, the wall-side backfill 2, the wall-side filtering facility 3, the storage and drainage system 4, the road-side filtering facility 5, the road-side backfill 6 and the road-side water storage system 7 are arranged in sequence along the direction from the outer wall 8 of the roadside building to the road 9.

[0021] The wall-side water storage system 1 is used to receive and store wastewater from the roadside building area; wherein the wastewater from the roadside building area includes outdoor rainwater and indoor wastewater; the wall-side water storage system 1 is provided with a wall-side overflow port, which is used to allow the wastewater in the wall-side water storage tank 102 in the wall-side water storage system 1 to overflow to the wall-side fill 2; the wall-side filtering facility 3 is used to grade and filter the wastewater flowing through the surface of the wall-side fill 2, and allow the filtered wastewater to flow into the first water storage tank 401 of the water storage and drainage system 4; wherein the wall-side fill 2 is used to purify wastewater using soil, plants and organisms.

[0022] The roadside water storage system 7 is used to receive and store wastewater in the road 9 area; wherein, the roadside water storage system 7 is provided with a roadside overflow port, which is used to allow the wastewater in the roadside water storage tank 702 in the roadside water storage system 7 to overflow to the roadside fill 6; the roadside filtering facility 3 is used to grade and filter the wastewater flowing through the surface of the roadside fill 6, and allow the filtered wastewater to flow into the second water storage tank 403 of the water storage and drainage system 4; wherein, the roadside fill 6 is used to purify wastewater using soil, plants and organisms.

[0023] In the present invention, the wall-side water storage system 1 includes a rainwater pipe 101, a wall-side water storage tank 102, an indoor wastewater diversion pipe 103, a diversion pipe switch 104, a diversion pipe electric valve 105, a sewage pipe 106, a sewage pipe switch 107, a sewage pipe electric valve 108, a sewage pump 109, a wall-side rainwater grate 110 and a wall-side overflow filter 111.

[0024] The rainwater pipe 101 is vertically installed on the outside of the outer wall 8 of the roadside building. The rainwater pipe 101 is used to receive and drain rainwater from the roadside building area to the wall-side water tank 102; the wall-side water tank 102 is arranged at the bottom of the outer wall 8 of the roadside building and is located below the lower water outlet of the rainwater pipe 101; the wall-side water tank 102 is a hollow water tank structure with an open upper end, and a wall-side rainwater grate 110 is installed at the upper opening of the wall-side water tank 102; a wall-side overflow port is opened at the top of the outer wall of the wall-side water tank 102, and the wall-side overflow port is arranged close to one end of the wall-side fill 2.

[0025] One end of the indoor wastewater shunt pipe 103 shown is connected to the middle and upper part of the inner wall of the wall-side water storage tank 102, and the other end of the indoor wastewater shunt pipe 103 passes through the outer wall 8 of the roadside building and is connected to the indoor wastewater pipe of the roadside building; the shunt pipe switch 104 and the shunt pipe electric valve 105 are sequentially arranged on the indoor wastewater shunt pipe 103, and are used to control the on-off and opening size of the indoor wastewater shunt pipe 103, so as to introduce part of the indoor wastewater into the wall-side water storage tank 102; wherein, the indoor wastewater shunt pipe 103 is arranged at an angle, that is, the end of the indoor wastewater shunt pipe 103 close to the wall-side water storage tank 102 is lower than the end away from the wall-side water storage tank 102.

[0026] One end of the sewage pipe 106 is connected to the bottom end of the inner wall of the wall-side water storage tank 102, and the other end of the sewage pipe 106 passes through the outer wall 8 of the roadside building and is connected to the indoor sewage pipe of the roadside building; the sewage pipe switch 107, the sewage pump 109 and the sewage pipe electric valve 108 are arranged on the sewage pipe 106 in sequence, and the sewage pipe switch 107 and the sewage pipe electric valve 108 are used to control the on-off and opening size of the sewage pipe 106, and the sewage pump 109 is used to pump the wastewater and sediment in the wall-side water storage tank 102 through the sewage pipe 106 to the indoor drainage pipe; wherein, the sewage pipe 106 is laid horizontally.

[0027] It should be noted that the wall-side water storage tank 102 is arranged below the lower water outlet of the rainwater pipe 101, and the distance between the wall-side water storage tank 102 and the outer wall 8 of the roadside building is 3 cm; the wall-side water storage tank 102 adopts a water tank structure prefabricated with concrete, polyvinyl chloride board or stainless steel, and the size characteristics of the wall-side water storage tank 102 are length × width × height = 50cm × 30cm × 50cm, and the long side of the wall-side water storage tank 102 is parallel to the extension direction of the outer wall 8 of the roadside building; wherein, the wall thickness of the wall-side water storage tank 102 is 2 cm; the inner wall of the wall-side water storage tank 102 is provided with a diversion pipe reserved hole 112 and a sewage pipe reserved hole 113 The diversion pipe reserved hole 112 is located in the middle of the bottom end of the inner wall of the wall-side water storage tank 102, and the sewage pipe reserved hole 113 is located at a preset position in the middle and upper part of the inner wall of the wall-side water storage tank 102; wherein, the diversion pipe reserved hole 112 is used for the connection between the indoor wastewater diversion pipe 103 and the wall-side water storage tank 102, and the sewage pipe reserved hole 113 is used for the connection between the sewage pipe 106 and the wall-side water storage tank 102; a wall-side overflow port is opened at the top of the outer wall of the wall-side water storage tank 102, and the wall-side overflow filter 111 is installed at the wall-side overflow port; wherein, the wall-side overflow filter 111 is 50 cm long, 10 cm high, and has a pore size of 1 cm.

[0028] It should also be noted that the inner wall of the wall side water tank 102 is the vertical structure of the wall side water tank 102 close to the outer wall 8 of the road side building, and the outer wall of the wall side water tank 102 is the vertical structure of the wall side water tank 102 close to the wall side fill 2.

[0029] In the present invention, the wall-side filling 2 includes a wall-side filling body 201 , wall-side shrubs 202 , wall-side aquatic plants 203 , wall-side sprinklers 204 , wall-side water pumps 205 and wall-side connecting water pipes 206 .

[0030] The wall side backfill body 201 is made of soil filling and is arranged obliquely between the wall side water storage tank 101 and the wall side filtering facility 3; wherein, the side of the wall side backfill body 201 close to the wall side water storage tank 101 is higher than the side of the wall side backfill body 201 close to the wall side filtering facility 3; that is, in the direction from the wall side water storage system 1 to the wall side filtering facility 3, the wall side backfill body 201 is inclined downward; the side of the wall side backfill body 201 close to the wall side water storage tank 101 is lower than the wall side overflow port to ensure that the wastewater overflowing from the wall side water storage tank 101 can enter the wall side backfill body 201; preferably, the height difference between the top surface height of the wall side backfill body 201 close to the wall side water storage tank 101 and the bottom edge of the wall side overflow filter 111 is 3 cm.

[0031] The wall-side shrubs 202 and the wall-side aquatic plants 203 are both planted on the surface of the wall-side fill body 201. The wall-side shrubs 202 are planted close to the wall-side water tank 101, and the wall-side aquatic plants 203 are planted close to the wall-side filtering facility 3. It should be noted that the wall-side shrubs 202 are shrubs planted on the wall-side fill body 201, and the wall-side aquatic plants 203 are aquatic plants planted on the upper end of the wall-side fill body 201. The water inlet end of the wall-side connecting water pipe 206 is connected to the first water tank 401 in the drainage system 4, and the water outlet end of the wall-side connecting water pipe 206 extends upward from the bottom surface of the wall-side fill body 201 to the top surface of the wall-side fill body 201, and is placed between the wall-side shrubs 202 and the wall-side aquatic plants 203; the water inlet end of the wall-side water pump 205 is connected to the water outlet end of the wall-side connecting water pipe 206, and the wall-side nozzle 204 is installed at the water outlet end of the wall-side water pump 205.

[0032] In the present invention, the wall side filtering facility 3 adopts a stepped filtering facility; the stepped filtering facility includes a filtering facility foundation 301, a mud guard 302, a coarse-pore filter plate 303, a fine-pore filter plate 304, an ultra-fine-pore filter plate 305, a gravel mesh box gabion 306, a crushed stone mesh box gabion 307 and an activated carbon mesh box cage 308.

[0033] The filtering facility foundation 301 is arranged between the wall side backfill 2 and the water storage and drainage system 4, and the top surface of the filtering facility foundation 301 is arranged inclined; wherein, the top end of the top surface of the filtering facility foundation 301 is arranged close to one side of the wall side backfill 2, and the bottom end of the top surface of the filtering facility foundation 301 is arranged close to one side of the water storage and drainage system 4; the mud guard 302, the coarse-pore filter plate 303, the fine-pore filter plate 304 and the ultra-fine-pore filter plate 305 are all arranged vertically on the filtering facility. The top surface of the filtration facility foundation 301 is uniformly provided with first holes on the upper half of the mudguard 302, the second holes on the lower half of the coarse-pore filter plate 303, the third holes on the lower half of the fine-pore filter plate 304, and the fourth holes on the lower half of the ultrafine filter plate 305; the outer side of the lower half of the ultrafine filter plate 305 is wrapped with a reverse osmosis membrane.

[0034] Specifically, the filtering facility foundation 301 is arranged between the wall side fill body 201 and the first water tank 401 in the water storage and drainage system 4; the filtering facility foundation 301 is provided with four vertical baffles in sequence from one end close to the wall side fill body 201 to the end away from the wall side fill body 201; wherein, the four vertical baffles are arranged in sequence as a mud guard 302, a coarse-pore filter plate 303, a fine-pore filter plate 304 and an ultra-fine-pore filter plate 305; preferably, the horizontal spacing between the four vertical baffles is 20 cm, and the height of the four vertical baffles is 25 cm; it should be noted that the upper half of the four vertical baffles is the area 5 cm downward from the top, and the lower half is the area 20 cm upward from the bottom.

[0035] The upper part of the mudguard 302 is the top; the upper part of the mudguard 203 is provided with two rows of rectangular holes, which are arranged in a linear array; wherein the cross-sectional dimensions of the rectangular holes are length × width = 2 cm × 1 cm, and the spacing between two adjacent rectangular holes is 1 cm; the lower part of the mudguard 302 is a solid plate structure; the upper part of the coarse-pore filter plate 303 is a solid plate structure, and the lower part of the coarse-pore filter plate 303 is provided with inclined circular holes with a diameter of 2 cm; the upper part of the fine-pore filter plate 304 is a solid plate structure, and the fine-pore filter plate 304 is a solid plate structure. The lower half of the coarse-pore filter plate 304 is provided with an inclined circular hole with a diameter of 1 cm; wherein the inclination direction of the inclined circular holes on the coarse-pore filter plate 303 and the fine-pore filter plate 304 matches the inclination direction of the top surface of the filtering facility foundation 301, and the spacing between two adjacent inclined circular holes is 1 cm; the upper half of the ultrafine filter plate 305 is a solid plate structure, the lower half of the ultrafine filter plate 305 is provided with an inclined circular hole, and the outer side of the lower half of the ultrafine filter plate 305 is wrapped with a reverse osmosis membrane; wherein the reverse osmosis membrane is embedded in the ultrafine filter plate 305 on all sides.

[0036] It should be noted that, from the mudguard 302 to the upper direction of the ultrafine filter plate 305, the top height of the rear vertical baffle is lower than the top height of the previous vertical baffle; that is, the top heights of two adjacent vertical baffles decrease successively, and the height difference is 5 cm; the tops of the four vertical baffles are all flat ends, and the bottoms are inclined surfaces; wherein, the interface between the upper and lower parts of the mudguard 302 is a plane, which is parallel to the top surface of the vertical baffle; the interface between the upper and lower parts of the coarse-pore filter plate 303, the fine-pore filter plate 304 and the ultrafine filter plate 305 is also an inclined surface, which is parallel to the bottom surface of the vertical baffle; the bottom surface of the filtration facility foundation 301 is a plane, the bottom end of the mudguard 302 is 25 cm high from the bottom surface of the filtration facility foundation 301, and the bottom end of the ultrafine filter plate 306 is 10 cm high from the bottom surface of the filtration facility foundation 301.

[0037] The gravel mesh gabion 306, the crushed stone mesh gabion 307 and the activated carbon mesh cage 308 are all placed above the top surface of the filtering facility foundation 301; wherein the gravel mesh gabion 306 is arranged between the fender 302 and the coarse-pore filter plate 303, the crushed stone mesh gabion 307 is arranged between the coarse-pore filter plate 303 and the fine-pore filter plate 304, and the activated carbon mesh cage 308 is arranged between the fine-pore filter plate 304 and the ultra-fine-pore filter plate 305; Specifically, a parallelepiped groove is formed between the mudguard 302 and the coarse-pore filter plate 303, in which a gravel mesh box gabion 306 is placed; a parallelepiped groove is formed between the coarse-pore filter plate 303 and the fine-pore filter plate 304, in which a crushed stone mesh box gabion 307 is placed; a parallelepiped groove is formed between the fine-pore filter plate 304 and the ultrafine filter plate 305, in which an activated carbon mesh box cage 308 is placed; wherein the gravel mesh box gabion 306, the crushed stone mesh box gabion 307 and the activated carbon mesh box cage 308 are all parallelepiped structures.

[0038] In the present invention, the drainage system 4 includes a first water reservoir 401, a drainage ditch 402, a second water reservoir 403 and a drainage ditch water pump 404; the first water reservoir 401 is arranged close to the wall-side filtering facility 3, and is used to receive and store the wastewater filtered by the wall-side filtering facility 3; the second water reservoir 403 is close to the road-side filtering facility 5, and is used to receive and store the wastewater filtered by the road-side filtering facility 6; the drainage ditch 402 is arranged between the first water reservoir 401 and the second water reservoir 403, and is used to divert the wastewater received in the first water reservoir 401 and the second water reservoir 403 to the sewage pipe.

[0039] Specifically, the first water reservoir 401 and the second water reservoir 403 are both hollow water reservoir structures with an open top made of concrete, polyvinyl chloride plate or stainless steel; the drainage ditch 402 is an open-top drainage ditch prefabricated with concrete, polyvinyl chloride plate or stainless steel; the first water reservoir 401, the drainage ditch 402 and the second water reservoir 403 are tightly fitted, and the bottom surfaces are flush.

[0040] The top opening of the first water reservoir 401 is paved with a rainwater grate, and the top surface height of the rainwater grate is 3 cm lower than the bottom end of the ultrafine filter plate 305 in the wall-side filtering facility 3; the first water reservoir 401 is tightly fitted to the filtering facility foundation 301, and the fitting height in the vertical direction is 5 cm; the size characteristics of the first water reservoir 401 are length × width × height = 50 cm × 30 cm × 50 cm, and the wall thickness of the first water reservoir 401 is 2 cm; the first water reservoir 401 is reserved with a pipe opening on the side close to the wall-side filtering facility 3, and the pipe opening is arranged in the middle of the bottom end of the side wall of the first water reservoir 401; the pipe opening is used to connect the wall-side connecting water pipe 206.

[0041] The top of the drainage ditch 402 is open and paved with a ditch rainwater grate, and the top surface of the ditch rainwater grate is flush with the bottom surface of the pool rainwater grate; the length of the drainage ditch 402 is 50 cm, the width is 30 cm, the bottom thickness is 10 cm, and the wall thickness of both sides of the drainage ditch 402 is 2 cm; the drainage ditch water pump 404 is arranged on the side wall of the drainage ditch 402, and the water inlet of the drainage ditch water pump 404 is connected to both the first water reservoir 401 and the second water reservoir 403; wherein, the first water reservoir 401 and the second water reservoir 403 are connected by a pre-buried pipe buried in the middle of the bottom of the drainage ditch 402 in advance to ensure the balance of water stored in the first water reservoir 401 and the second water reservoir 402.

[0042] The structure of the second water reservoir 403 is exactly the same as that of the first water reservoir 401, and is symmetrically arranged about the drainage ditch 402; the difference is that the pipe opening reserved on the second water reservoir 403 is connected to the roadside connecting water pipe 606 in the roadside fill 6; for the structural details of the second water reservoir 403, please refer to the description of the first water reservoir 401 above, and will not be repeated here.

[0043] In the present invention, the roadside filtering facility 5 has the same structure as the wall-side filtering facility 3, and also adopts a stepped filtering facility; wherein, the roadside filtering facility 5 and the wall-side filtering facility 3 are symmetrically arranged with respect to the drainage system 4; for the structural details of the roadside filtering facility 5, please refer to the description of the above-mentioned wall-side filtering facility 3, which will not be repeated here.

[0044] In the present invention, the roadside fill 6 includes a roadside fill body 601 , roadside shrubs 602 , roadside aquatic plants 603 , roadside sprinklers 604 , a roadside water pump 605 and a roadside connecting water pipe 606 . The roadside fill body 601 is made of soil filling and is arranged obliquely between the roadside water storage tank 702 of the roadside water storage system 7 and the roadside filtering facility 5; wherein, the side of the roadside fill body 601 close to the roadside water storage tank 702 is higher than the side of the roadside fill body 601 close to the roadside filtering facility 5; that is, in the direction from the roadside water storage system 7 to the roadside filtering facility 5, the roadside fill body 601 is inclined downward; the side of the roadside fill body 601 close to the roadside water storage tank 702 is lower than the roadside overflow port to ensure that the wastewater overflowing from the roadside water storage tank 702 can enter the roadside fill body 601; preferably, the height difference between the top surface height of the roadside fill body 601 close to the roadside water storage tank 702 and the bottom edge of the roadside overflow filter 703 of the roadside water storage system 7 is 3 cm.

[0045] The roadside shrubs 602 and the roadside aquatic plants 603 are both planted on the surface of the roadside fill body 601, the roadside shrubs 201 are planted close to the roadside water tank 702, and the roadside aquatic plants 603 are planted close to the roadside filtration facility 5; it should be noted that the roadside shrubs 602 are shrubs planted on the roadside fill body 601, and the roadside aquatic plants 603 are aquatic plants planted on the upper end of the roadside fill body 601. The water inlet end of the roadside connecting water pipe 606 is connected to the second water tank 403 in the water storage and drainage system 4, and the water outlet end of the roadside connecting water pipe 606 extends upward from the bottom surface of the roadside fill body 601 to the top surface of the roadside fill body 601, and is placed between the roadside shrubs 602 and the roadside aquatic plants 603; the water inlet end of the roadside water pump 605 is connected to the water outlet end of the roadside connecting water pipe 606, and the roadside nozzle 604 is installed at the water outlet end of the roadside water pump 605.

[0046] In the present invention, a street lamp device is also provided on the roadside fill body 601, and the street lamp device is arranged between the roadside shrubs 602 and the roadside water tank 702; wherein, the street lamp device includes a street lamp body and a solar power generation device arranged on the street lamp body; a part of the electric energy generated by the solar power generation device is used to make the street lamp body work normally, and the remaining part can be used to power the water pump and the electric valve in the assembled wastewater treatment device.

[0047] In the present invention, the road 9 is provided with a road hump so that rainwater in the road 9 area flows to the edge of the road 9; the roadside water storage system 7 includes a roadside water retaining plate 701, a roadside water storage tank 702, a roadside overflow filter 703 and a roadside rainwater grate 704; the roadside retaining plate 701 is arranged at the edge of the road 9 and is arranged along the extension direction of the road 9; wherein, a water through hole is provided on the roadside retaining plate 701; preferably, the roadside water retaining plate 701 has a height of 10 cm, a length of 50 cm and a thickness of 5 cm.

[0048] The roadside water tank 702 is arranged on the side of the road 9. The roadside water tank 702 is a hollow water tank structure with an open top, and is prefabricated with concrete, polyvinyl chloride board or stainless steel; a roadside rainwater grate 704 is installed at the opening of the roadside water tank 702; wherein the top surface of the roadside rainwater grate 704 is flush with the bottom surface of the roadside water retaining plate 701; preferably, the size characteristics of the roadside water tank 702 are length × width × height = 50cm × 30cm × 50cm, and the long side of the roadside water tank 702 is parallel to the extension direction of the road 9, and the wall thickness of the roadside water tank 702 is 2cm; the roadside overflow filter 703 is installed at the roadside overflow outlet, and the roadside overflow filter 703 is 50cm long, 10cm high, and has an aperture of 1cm.

[0049] Construction process: The construction process of the assembled wastewater treatment device of the present invention is as follows: Pass one end of the indoor wastewater shunt pipe 103 through the outer wall 8 of the roadside building and extend it to the position of the shunt pipe reserved hole 112 on the wall-side water storage tank 102; then connect the other end of the indoor wastewater shunt pipe 103 to the indoor wastewater pipe of the roadside building; then, pass one end of the sewage pipe 106 through the outer wall 8 of the roadside building and extend it to the position of the sewage pipe reserved hole on the wall-side water storage tank 102; then connect the other end of the sewage pipe 106 to the indoor sewage pipe.

[0050] Excavate the soil layer between the outer wall 8 of the roadside building and the road 9 to 1.2m underground from the bottom surface of the roadside water retaining plate 701, place the water storage and drainage system 4 at the center line between the roadside water retaining plate and the road 9, and ensure that the bottom surface of the water storage and drainage system 4 is level; then, connect the wall-side connecting water pipe 206 and the road-side connecting sewage pipe 606 to the water storage and drainage system 4 respectively, and perform anti-seepage treatment at the holes; then, backfill the soil layer to 0.77m underground from the bottom surface of the roadside water retaining plate 701.

[0051] The wall-side filtering facilities 3 and the road-side filtering facilities 5 are respectively installed on both sides of the water storage and drainage system 4, ensuring that the wall-side filtering facilities 3 and the road-side filtering facilities 5 are tightly fitted with the water storage and drainage system 4, and ensuring that the top surface height of the rainwater gratings on the first water storage tank 401 and the second water storage tank 404 is 3 cm lower than the bottom end of the ultrafine filter plate of the stepped filtering facility; then, backfill the soil layer to 0.52 m underground from the bottom surface of the roadside water retaining plate 701.

[0052] Place a wall-side water storage tank 102 3 cm away from the outer wall 8 of the roadside building to prevent the outer wall of the building from being close to the wall-side water storage tank 102 and causing moisture; connect the diversion pipe reserved hole 112 on the wall-side water storage tank 101 to the indoor wastewater diversion pipe 103, connect the sewage pipe reserved hole 113 on the wall-side water storage tank 101 to the sewage pipe 106, and perform anti-seepage treatment on the holes; install the roadside water storage tank 702 on the side close to the road 9, ensure that the roadside water storage tank 702 fits tightly with the road 9, and make the top surface of the rainwater grate on the upper part of the roadside water storage tank 702 flush with the bottom surface of the roadside water baffle 701.

[0053] After installing the wall side water tank 102 and the road side water tank 702, backfill the soil layer to ensure that the soil layer close to the step filtering facility is backfilled to the interface between the upper and lower parts of the mud guard, and the soil layer close to the wall side water tank 102 and the road side water tank 702 is backfilled to 3 cm below the bottom of the filter; at the same time, ensure that the soil layer is arranged in an inclined surface from the wall side water tank 102 and the road side water tank 702 to the step filtering facility to form the wall side fill body 201 and the road side fill body 701; finally, plant shrubs and aquatic plants in the wall side fill body 201 and the road side fill body 701.

[0054] Working principle and wastewater treatment method: The assembled wastewater treatment device of the present invention, when used in the rainy season, introduces outdoor rainwater from the roadside building area into the wall-side water storage system 7, and the outdoor rainwater enters the storage and drainage system 4 after passing through the wall-side backfill 2 and the wall-side filtering facilities 3; at the same time, the wastewater from the road area flows into the roadside water storage system 7, and the roadside wastewater enters the storage and drainage system 4 after passing through the roadside backfill 6 and the roadside filtering facilities 5; when used in the non-rainy season, the indoor wastewater from the roadside building area is introduced into the wall-side water storage system 7, and the indoor wastewater enters the storage and drainage system 4 after passing through the wall-side backfill 2 and the wall-side filtering facilities 3.

[0055] Specifically, the assembled wastewater treatment device includes a rainy season working mode and a non-rainy season working mode; the implementation process of the two working modes is as follows: (1) Rainy season working mode: In the rainy season, rainwater from the roadside building area flows into the wall-side water storage tank 102 through the rainwater pipe 101, and rainwater from the road 9 area flows into the roadside water storage tank 702 through the roadside water retaining plate 701; by setting the wall-side rainwater grate 110 at the top opening of the wall-side water storage tank 102 and the road-side rainwater grate 704 at the top opening of the road-side water storage tank 702, dead branches or large garbage in the rainwater are prevented from entering the wall-side water storage tank 102 and the roadside water storage tank 702. The device in the water tank 702 is clogged; rainwater enters the wall-side water tank 102 and the road-side water tank 702 for preliminary sedimentation; when the wastewater in the wall-side water tank 102 exceeds the wall-side overflow filter 111, the wastewater will flow through the wall-side fill body 201 to the wall-side filtering facility 3; when the wastewater in the road-side water tank 702 exceeds the road-side overflow filter 703, the wastewater will flow through the road-side fill body 201 to the road-side filtering facility 5.

[0056] When wastewater flows into the wall-side filtration facility 3 or the road-side filtration facility 5, the mudguard 23 is first used to block large clods of earth, dead branches or garbage, and then the wastewater is filtered and purified in sequence through the gravel mesh cage 306, the coarse-pore filter plate 303, the crushed stone mesh cage 307, the fine-pore filter plate 304, the activated carbon mesh cage 308 and the ultra-fine filter plate 305, and then enters the first water reservoir 401 or the second water reservoir 403; wherein, the inclined setting of the top surface of the filtration facility foundation 301 can accelerate the downward flow of wastewater, the coarse-pore filter plate 303 can block impurities with a particle size greater than 2 cm in the wastewater, the fine-pore filter plate 304 can block impurities with a particle size greater than 1 cm in the wastewater, and the reverse osmosis membrane on the ultra-fine filter plate 305 can block heavy metals, pesticides and other impurities in the wastewater, thereby realizing multi-stage deep purification of the wastewater.

[0057] The filtered and purified wastewater enters the first water reservoir 401 or the second water reservoir 403 for storage; when the wastewater in the first water reservoir 401 or the second water reservoir 403 exceeds the rainwater grate at its upper mouth, it will overflow into the drainage ditch 402 and finally enter the sewage pipe.

[0058] It should be noted that when the rain is heavy and the wastewater stored in the first water reservoir 401 or the second water reservoir 403 reaches a preset amount, the drainage ditch water pump 404 is turned on to cause the wastewater in the first water reservoir 401 or the second water reservoir 403 to be discharged into the drainage ditch 402, so as to accelerate the discharge of rainwater and reduce the adverse effects of heavy rain; after the rain stops, the wastewater stored in the first water reservoir 401 or the second water reservoir 403 can enter the wall-side fill body 201 or the road-side fill body 601 through the wall-side connecting water pipe 206 or the road-side connecting water pipe 606 to irrigate the shrubs and aquatic plants on the wall-side fill body 201 or the road-side fill body 601 to ensure the normal growth of the plants.

[0059] (2) Non-rainy season working mode: During the non-rainy season, the wall side water storage tank 102 does not receive rainwater from the rainwater pipe 101; at this time, the shunt pipe switch 104 and the shunt pipe electric valve 105 are turned on to divert the indoor wastewater to the wall side water storage tank 102 through the indoor wastewater shunt pipe 103, and the indoor wastewater enters the wall side water storage tank 102 for preliminary sedimentation; when the wastewater in the wall side water storage tank 102 exceeds the wall side overflow filter 111, the wastewater will flow through the wall side fill body 201 to the wall side filtration facility 3.

[0060] When wastewater flows into the wall-side filtration facility 3, the mud guard 23 is first used to block large soil blocks, dead branches or garbage, and then it is filtered and purified by the gravel mesh cage 306, the coarse-pore filter plate 303, the crushed stone mesh cage 307, the fine-pore filter plate 304, the activated carbon mesh cage 308 and the ultra-fine filter plate 305 in sequence, and then enters the first water reservoir 401 or the second water reservoir 403; wherein, the top surface of the filtration facility foundation 301 is inclined to accelerate the downward flow of wastewater, and the coarse-pore filter plate 307 is used to filter and purify the wastewater. 03 can block impurities with a particle size greater than 2 cm in the wastewater, the fine-pore filter plate 304 can block impurities with a particle size greater than 1 cm in the wastewater, and the reverse osmosis membrane on the ultrafine filter plate 305 can block heavy metals, pesticides and other impurities in the wastewater, thereby achieving multi-stage deep purification of the wastewater; the filtered and purified wastewater enters the first water reservoir 401 for storage; when the wastewater in the first water reservoir 401 exceeds the preset position, it will flow into the second water reservoir 403 through the pre-buried pipe for storage.

[0061] It should be noted that the opening time of the indoor wastewater drainage pipe 103 is based on ensuring that the amount of water stored in the first water tank 401 and the second water tank 403 reaches a preset value; when there is no rain and it is necessary to irrigate the shrubs and aquatic plants on the wall-side fill body 201 or the road-side fill body 601, the wastewater stored in the first water tank 401 or the second water tank 403 can enter the wall-side fill body 201 or the road-side fill body 601 through the wall-side connecting water pipe 206 or the road-side connecting water pipe 606 to irrigate the shrubs and aquatic plants on the wall-side fill body 201 or the road-side fill body 601 to ensure the normal growth of the plants; after the wall-side water tank 102 has been running for a preset period of time, the sewage pipe 106 is opened to discharge the wastewater and sediment at the bottom of the wall-side water tank 102 into the sewage pipe through the sewage pipe 106, thereby ensuring the normal operation of the wall-side water tank 102.

[0062] In the present invention, outdoor rainwater and indoor wastewater in the roadside building area are collected through the wall-side water storage system, and rainwater and wastewater in the road area are collected by the roadside water storage system. The problem of limited functions of traditional biological retention facilities in the non-rainy season is effectively solved through the assembled design, and wastewater treatment and resource utilization are realized all year round; by integrating indoor and outdoor wastewater treatment systems, biological retention facilities are fully utilized to treat and resource indoor wastewater, thereby improving the reuse efficiency of wastewater and reducing dependence on the municipal pipe network; through multi-level cascade filtration facilities, impurities of different particle sizes in the wastewater are separated and filtered. Efficient removal; by setting wall-side fill and road-side fill to utilize organisms, soil and plants in the natural ecosystem to purify wastewater, it is achieved while treating wastewater and promoting the sustainable development of the ecological environment; the present invention adopts an assembled design, which can simplify the construction process, shorten the construction period and reduce the construction cost; due to the detachability of the components, the subsequent maintenance and upgrading are more convenient; at the same time, it can be customized according to different geographical environments and wastewater treatment needs, with good flexibility and adaptability; by reducing construction costs, improving resource utilization and reducing subsequent maintenance costs.

[0063] The assembled wastewater treatment device described in the present invention realizes efficient purification and resource utilization of wastewater; by collecting, precipitating and multi-stage filtering rainwater in the rainy season, it can effectively remove pollutants such as suspended solids, organic matter and nutrients in the water, and at the same time recycle rainwater resources for plant irrigation during the non-rainy season, greatly improving the utilization efficiency of water resources; in addition, the device can be converted to an indoor wastewater treatment mode during the non-rainy season, and domestic sewage is treated through the same purification process, which not only reduces the pressure on the municipal sewage system, but also realizes the reuse of wastewater, which has significant environmental protection significance.

[0064] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. An assembled wastewater treatment device, characterized in that: The assembled wastewater treatment device is arranged between the outer wall (8) of a roadside building and a road (9), and comprises a wall-side water storage system (1), wall-side fill (2), wall-side filtering facilities (3), a water storage and drainage system (4), a roadside filtering facility (5), a roadside fill (6), and a roadside water storage system (7) arranged in sequence from the outer wall (8) of the roadside building to the road (9); The wall-side water storage system (1) is used to receive and store wastewater from the roadside building area; wherein the wastewater from the roadside building area includes outdoor rainwater and indoor wastewater; the wall-side water storage system (1) is provided with a wall-side overflow port, so that the wastewater in the wall-side water storage system (1) overflows to the wall-side fill (2); the wall-side filtering facility (3) is used to grade and filter the wastewater flowing through the surface of the wall-side fill (2), and allow the filtered wastewater to flow into the storage and drainage system (4); The roadside water storage system (7) is used to receive and store wastewater in the road (9) area; wherein the roadside water storage system (7) is provided with a roadside overflow outlet so that wastewater in the roadside water storage system (7) overflows onto the roadside fill (6); the roadside filtering facility (5) is used to grade and filter wastewater flowing through the surface of the roadside fill (6) and allow the filtered wastewater to flow into the water storage and drainage system (4).

2. The assembled wastewater treatment device according to claim 1, characterized in that: The wall-side water storage system (1) comprises a rainwater pipe (101), a wall-side water storage tank (102), an indoor wastewater diversion pipe (103) and a sewage pipe (106); The rainwater pipe (101) is vertically installed on the outside of the outer wall (8) of the roadside building; the wall-side water storage tank (102) is arranged on the outside of the bottom of the outer wall (8) of the roadside building and is located below the lower water outlet of the rainwater pipe (101); a wall-side overflow outlet is provided at the top of the outer wall of the wall-side water storage tank (102), and the wall-side overflow outlet is arranged close to one end of the wall-side fill (2); One end of the indoor wastewater diversion pipe (103) is in communication with the middle upper portion of the inner wall of the wall-side water storage tank (102), and the other end of the indoor wastewater diversion pipe (103) passes through the outer wall (8) of the roadside building and is connected to the indoor wastewater pipe of the roadside building; one end of the sewage pipe (106) is in communication with the bottom end of the inner wall of the wall-side water storage tank (102), and the other end of the sewage pipe (106) passes through the outer wall (8) of the roadside building and is connected to the indoor sewage pipe of the roadside building.

3. The assembled wastewater treatment device according to claim 2, characterized in that: The wall side fill (2) comprises a wall side fill body (201), wall side shrubs (202) and wall side aquatic plants (203); The wall-side earthfill body (201) is formed by filling soil and is arranged obliquely between the wall-side water storage system (1) and the wall-side filtering facility (3); wherein a side of the wall-side earthfill body (201) close to the wall-side water storage system (1) is higher than a side of the wall-side earthfill body (201) close to the wall-side filtering facility (3), and a side of the wall-side earthfill body (201) close to the wall-side water storage system (1) is lower than the wall-side overflow outlet; The wall-side shrubs (202) and the wall-side aquatic plants (203) are both planted on the surface of the wall-side fill body (201), the wall-side shrubs (201) are planted close to the wall-side water storage system (1), and the wall-side aquatic plants (203) are planted close to the wall-side filtering facility (3).

4. The assembled wastewater treatment device according to claim 3, characterized in that: The wall-side fill (2) further comprises a wall-side sprinkler (204), a wall-side water pump (205) and a wall-side connecting water pipe (206); the water inlet end of the wall-side connecting water pipe (206) is connected to the water storage and drainage system (4); the water outlet end of the wall-side connecting water pipe (206) extends upward from the bottom surface of the wall-side fill body (201) to the top surface of the wall-side fill body (201) and is placed between the wall-side shrubs (202) and the wall-side aquatic plants (203); the water inlet end of the wall-side water pump (205) is connected to the water outlet end of the wall-side connecting water pipe (206), and the wall-side sprinkler (204) is installed at the water outlet end of the wall-side water pump (205).

5. The assembled wastewater treatment device according to claim 1, characterized in that: The wall-side filtering facility (3) and the road-side filtering facility (5) have the same structure, and both use a cascade filtering facility; wherein the cascade filtering facility comprises a filtering facility foundation (301), a fender (302), a coarse-pore filtering plate (303), a fine-pore filtering plate (304), an ultrafine-pore filtering plate (305), a gravel mesh gabion (306), a crushed stone mesh gabion (307), and an activated carbon mesh cage (308); The filtering facility foundation (301) is arranged between the wall-side fill (2) and the water storage and drainage system (4) or between the road-side fill (6) and the water storage and drainage system (4), and the top surface of the filtering facility foundation (301) is arranged at an inclination; wherein the top end of the top surface of the filtering facility foundation (301) is arranged close to one side of the wall-side fill (2) or the road-side fill (6), and the bottom end of the top surface of the filtering facility foundation (301) is arranged close to one side of the water storage and drainage system (4); The mudguard (302), the coarse-pore filter plate (303), the fine-pore filter plate (304), and the ultrafine-pore filter plate (305) are all vertically arranged on the top surface of the filtering facility foundation (301), and are spaced apart in a direction from the top end to the bottom end of the top surface of the filtering facility foundation (301); The gravel mesh box gabion (306), the crushed stone mesh box gabion (307) and the activated carbon mesh box cage (308) are all placed above the top surface of the filtering facility foundation (301); wherein the gravel mesh box gabion (306) is arranged between the mudguard (302) and the coarse-pore filter plate (303), the crushed stone mesh box gabion (307) is arranged between the coarse-pore filter plate (303) and the fine-pore filter plate (304), and the activated carbon mesh box cage (308) is arranged between the fine-pore filter plate (304) and the ultra-fine-pore filter plate (305).

6. The assembled wastewater treatment device according to claim 1, characterized in that: The upper part of the mudguard (302) is uniformly provided with first holes, the lower part of the coarse-pore filter plate (303) is uniformly provided with second holes, the lower part of the fine-pore filter plate (304) is uniformly provided with third holes, and the lower part of the ultrafine filter plate (305) is uniformly provided with fourth holes; wherein the outer side of the lower part of the ultrafine filter plate (305) is wrapped with a reverse osmosis membrane.

7. The assembled wastewater treatment device according to claim 1, characterized in that: The water storage and drainage system (4) comprises a first water storage tank (401), a drainage ditch (402) and a second water storage tank (403); the first water storage tank (401) is arranged close to one side of the wall-side filtering facility (3) and is used to receive and store the wastewater filtered by the wall-side filtering facility (3); The second water reservoir (403) is located close to one side of the roadside filtering facility (5) and is used to receive and store the wastewater filtered by the roadside filtering facility (6); the drainage ditch (402) is arranged between the first water reservoir (401) and the second water reservoir (403) and is used to divert the wastewater received by the first water reservoir (401) and the second water reservoir (403) to the sewage pipe.

8. The assembled wastewater treatment device according to claim 1, characterized in that: The roadside water storage system (7) comprises a roadside water retaining plate (701) and a roadside water storage tank (702); The roadside baffle (701) is arranged at the edge of the road (9) and is arranged along the extension direction of the road (9); wherein the roadside baffle (701) is provided with a water-passing hole; wherein the roadside water storage tank (702) is arranged at the side of the road (9) and is flush with the bottom end of the roadside baffle (701); wherein a roadside overflow outlet is provided at the top end of the outer wall of the roadside baffle (701), and the roadside overflow outlet is arranged close to one end of the roadside fill (2).

9. The assembled wastewater treatment device according to claim 8, characterized in that: Filters are installed at the wall-side overflow outlet and the road-side overflow outlet.

10. An assembled wastewater treatment method, characterized in that: Utilizing an assembled wastewater treatment device as described in any one of claims 1 to 9; Wherein, the assembled wastewater treatment method comprises: During the rainy season, outdoor rainwater from the roadside building area is introduced into the wall side water storage system (7), and the outdoor rainwater is sequentially passed through the wall side fill (2) and the wall side filtering facility (3) before entering the storage and drainage system (4); at the same time, wastewater from the road area flows into the roadside water storage system (7), and the roadside wastewater is sequentially passed through the roadside fill (6) and the roadside filtering facility (5) before entering the storage and drainage system (4); In the non-rainy season, indoor wastewater from the roadside building area is introduced into the wall-side water storage system (7), and the indoor wastewater passes through the wall-side fill (2) and the wall-side filtering facilities (3) and then enters the water storage and drainage system (4).

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