A municipal wastewater treatment device and its treatment method

Abstract

This invention relates to the technical field of wastewater treatment, and in particular discloses a municipal wastewater treatment device and method, comprising a sponge retention tank, a drainage ditch disposed around the periphery of the sponge retention tank, and an overflow well disposed inside the sponge retention tank; the overflow well extends beyond the top of the sponge retention tank, and also includes a drainage inner enclosure installed on the top of the drainage ditch, the drainage inner enclosure being arranged around the circumference of the drainage ditch, and the drainage inner enclosure being made of a filter mesh material. This application has the effect of improving the treatment of rainwater on roads that contains a lot of mud, sand and other garbage that is difficult to handle.

Description

Technical Field

[0001] This invention relates to the technical field of wastewater treatment, and in particular to a municipal wastewater treatment device and treatment method thereof. Background Technology

[0002] Municipal wastewater typically includes rainwater from roads. Wastewater treatment refers to the process of bringing wastewater to the required water quality for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming a part of the daily lives of ordinary people.

[0003] The construction of sponge retention ponds is an important measure for rainwater treatment. Ecological retention facilities are one type of facility construction; bioretention facilities are structural rainwater controllers that intercept and temporarily store water quality and quantity, utilizing soil and vegetation in shallow puddles or landscaped areas to remove pollutants from rainwater runoff, and are an important measure in sponge retention pond systems.

[0004] In light of the aforementioned technologies, wastewater treatment has become a topic of concern. If wastewater is not treated in a timely manner, it will cause environmental pollution and other problems. At the same time, wastewater contains a lot of silt and other garbage, which is not easy to handle. Summary of the Invention

[0005] To address the problem of rainwater containing a lot of mud, sand, and other debris that is difficult to handle, this application provides a municipal wastewater treatment device and its treatment method.

[0006] In a first aspect, the present invention provides a municipal wastewater treatment device, which adopts the following technical solution:

[0007] A municipal wastewater treatment device includes a sponge retention tank, a drainage ditch disposed around the periphery of the sponge retention tank, and an overflow well disposed inside the sponge retention tank; the overflow well extends beyond the top of the sponge retention tank, and also includes an inner drainage enclosure installed on the top of the drainage ditch, the inner drainage enclosure being provided around the circumference of the drainage ditch, and the inner drainage enclosure being made of a filter mesh material.

[0008] By adopting the above technical solution, during rainy weather, the rainwater in the drainage ditch is first filtered through the drainage inner enclosure made of filter wire mesh, and the filtered rainwater then flows into the sponge retention tank. The garbage and impurities in the rainwater are intercepted by the drainage inner enclosure and sent to the drainage ditch.

[0009] Optionally, the drainage ditch is equipped with a cleaning component for garbage collection. The cleaning component includes several garbage collection wells located inside the drainage ditch and a cleaning scraper located at the top of the drainage ditch. The cleaning scraper is arranged with the inner perimeter of the drainage ditch pointing towards the outer perimeter of the drainage ditch, and the cleaning scraper is rotatable about the axis of the drainage ditch.

[0010] By adopting the above technical solution, the cleaning scraper rotates axially around the axis of the drainage ditch, and the rotating cleaning scraper sweeps garbage and impurities to the garbage collection well, thereby minimizing the blockage of the mesh of the drainage inner enclosure by garbage and impurities.

[0011] Optionally, the overflow well is provided with a drive component for rotating the cleaning scraper. The drive component includes a hollow ring disposed around the periphery of the overflow well, a rotating ring rotatably mounted inside the hollow ring, and several rotating fan blades fixed around the periphery of the rotating ring. The top of the several rotating fan blades is fixed to a drive ring. The cleaning scraper is fixed around the periphery of the drive ring. The drive ring is axially rotated about the axis of the hollow ring. The periphery of the hollow ring is provided with an inlet pipe and an outlet pipe.

[0012] By adopting the above technical solution, the water flow inside the hollow ring drives several rotating fan blades to rotate, and the several rotating fan blades drive the driving ring to rotate, thereby achieving the effect of the driving ring driving the cleaning scraper to rotate axially around the axis of the drainage ditch.

[0013] Optionally, a power component is provided on the periphery of the hollow ring. The power component includes a booster pump installed on the side wall of the overflow well and an irrigation shower installed above the sponge retention tank. The outlet pipe is connected to the irrigation shower, the inlet pipe is connected to the outlet port of the booster pump, and the inlet port of the booster pump is connected to the overflow well.

[0014] By adopting the above technical solution, the booster pump is started and the rainwater inside the overflow well is drawn into the hollow ring. The rainwater inside the hollow ring flows into the irrigation sprinkler through the outlet pipe. The rainwater is sprayed onto the surface of the sponge retention tank through the irrigation sprinkler, so as to minimize the effect of leaf burn on the green plants in the sponge retention tank.

[0015] Optionally, the sponge retention tank is provided with a rainwater diffusion infiltration component, which includes several straight infiltration pipes disposed around the overflow well, several annular infiltration pipes disposed horizontally around the overflow well, and several sponge infiltration columns disposed vertically at the top of the annular infiltration pipes.

[0016] By adopting the above technical solution, rainwater inside the overflow well flows into the interior of the sponge infiltration column through the straight infiltration pipe and the ring infiltration pipe, thereby achieving the effect of evenly transporting rainwater to various locations in the sponge retention tank.

[0017] Optionally, the overflow well is provided with a limiting component for controlling rainwater diffusion. The limiting component includes several drainage channels penetrating the periphery of the overflow well, several barrier strips inserted into the periphery of the overflow well through the drainage channels, and several straight-through infiltration pipes respectively aligned with several drainage channels.

[0018] By adopting the above technical solution, the barrier plate descends until it seals the overflow well's drain outlet, thereby isolating the overflow well and the straight-through permeation pipe. The barrier plate then rises until it opens the overflow well's drain outlet, thereby connecting the overflow well and the straight-through permeation pipe.

[0019] Optionally, the overflow well is provided with a sensing component for controlling the raising and lowering of the barrier strip. The sensing component includes a round box-shaped tray located at the top of the overflow well and a permeable sponge installed inside the round box-shaped tray. The barrier strip is fixed to the periphery of the round box-shaped tray.

[0020] By adopting the above technical solution, the permeable sponge continuously absorbs rainwater, and the weight of the round box tray continuously increases, gradually pressing down the barrier plate, causing the barrier plate to slide in a vertical downward direction until the barrier plate seals the overflow well's drain outlet. The water inside the permeable sponge continuously evaporates, causing the weight inside the round box tray to continuously decrease. The limiting float, through the buoyancy of the rainwater inside the overflow well, drives the barrier plate to rise.

[0021] Optionally, a limit float is installed on the inner sidewall of the barrier strip.

[0022] By adopting the above technical solution, the limiting float moves the four barrier plates in a vertically upward direction due to the buoyancy of the rainwater inside the overflow well, thereby realizing the connection between the overflow well and the straight-through infiltration pipe.

[0023] Secondly, the present invention provides a municipal wastewater treatment method for operating the aforementioned municipal wastewater treatment equipment, comprising the following steps:

[0024] S1. Rainwater from the municipal road surface continuously flows into the inner side of the drainage ditch. The rainwater in the drainage ditch is first filtered through the drainage inner enclosure, and then the filtered rainwater flows into the sponge retention tank.

[0025] S2. The surplus rainwater continues to rise until it overflows the top of the overflow well, and the rainwater is poured into the interior of the overflow well for storage.

[0026] S3. The sensing component presses down the blocking strip until the limiting component cuts off the connection between the overflow well and the straight-through permeation pipe.

[0027] S4. In sunny or scorching weather, the limiting float will be lifted by the buoyancy of the rainwater inside the overflow well, causing the barrier plate to rise until the limiting component opens the connection between the overflow well and the straight-through infiltration pipe.

[0028] S5. Rainwater inside the overflow well is evenly transported to various locations in the sponge retention tank through the infiltration components.

[0029] S6. The power unit drives the drive ring to rotate, and the drive ring drives the sweeping scraper to rotate axially around the axis of the drainage ditch. The rotating sweeping scraper sweeps garbage and impurities to the garbage collection well.

[0030] S7. Rainwater flows into the irrigation shower head through the outlet pipe, and the rainwater is sprayed onto the surface of the sponge retention tank through the irrigation shower head.

[0031] By adopting the above technical solution, during rainy or heavy rain, rainwater in the drainage ditch is first filtered through the drainage inner enclosure made of filter mesh. The filtered rainwater then flows into the sponge retention tank, where garbage and impurities are intercepted by the drainage inner enclosure and sent back to the drainage ditch. During sunny or hot weather, rainwater inside the overflow well flows into the interior of the sponge infiltration column through the straight and ring infiltration pipes, thus achieving uniform distribution of rainwater to all parts of the sponge retention tank. Rainwater inside the hollow ring flows into the irrigation sprinkler through the outlet pipe, and the rainwater is sprayed onto the surface of the sponge retention tank by the irrigation sprinkler, thus minimizing the risk of leaf burn to the plants in the sponge retention tank.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. During rainy weather, rainwater in the drainage ditch is first filtered through the drainage inner enclosure made of filter wire mesh. The filtered rainwater then flows into the sponge retention tank, where garbage and impurities in the rainwater are intercepted by the drainage inner enclosure and sent back to the drainage ditch.

[0034] 2. As the weight of the round box pallet increases, it gradually presses down on the barrier plate, causing the barrier plate to slide vertically downwards until it seals the overflow well's drain opening. The water inside the permeating sponge evaporates continuously, causing the weight inside the round box pallet to decrease continuously. The limiting float, through the buoyancy of the rainwater inside the overflow well, drives the barrier plate to rise.

[0035] 3. The barrier plate descends until it seals the overflow well's drain outlet, thus isolating the overflow well from the straight-through infiltration pipe. The barrier plate then rises until it opens the overflow well's drain outlet, thus connecting the overflow well to the straight-through infiltration pipe. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the municipal sewage treatment equipment in the embodiments of this application.

[0037] Figure 2 This is an exploded schematic diagram of the municipal sewage treatment equipment in the embodiments of this application.

[0038] Figure 3 This is a schematic diagram of the internal structure of the sponge retention tank in an embodiment of this application.

[0039] Figure 4 This is an exploded schematic diagram of the internal structure of the overflow well in the embodiments of this application.

[0040] Reference numerals: 11. Sponge retention tank; 12. Drainage ditch; 13. Overflow well; 14. Garbage collection well; 15. Filter channel; 16. Filter screen; 17. Drainage inner enclosure; 18. Hollow ring; 19. Rotating ring; 20. Rotating fan blade; 21. Clearance channel; 22. Drive ring; 23. Drainage outlet; 24. Inlet pipe; 25. Outlet pipe; 26. Booster pump; 27. Irrigation sprinkler; 28. Sweeping scraper; 29. ​​Long straight rod; 30. Straight infiltration pipe; 31. Annular infiltration pipe; 32. Sponge infiltration column; 33. Drainage outlet; 34. Barrier strip; 35. Limiting float; 36. Round box tray; 37. Infiltrating sponge; 38. Limiting straight rod. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0042] Reference Figure 1 and Figure 2A municipal wastewater treatment device includes a sponge retention tank 11 with a circular cross-section and a drainage ditch 12 located on the outer periphery of the sponge retention tank 11. The drainage ditch 12 has a circular cross-section. An overflow well 13 is vertically positioned at the center of the sponge retention tank 11, with the top of the overflow well 13 extending beyond the top of the sponge retention tank 11. Garbage collection wells 14 are vertically positioned on the inner bottom surface of the drainage ditch 12, with four garbage collection wells circumferentially arranged around the axis of the drainage ditch 12. A filter channel 15 is provided at the bottom of the garbage collection well 14 near the side wall of the sponge retention tank 11. A filter screen 16, made of filter wire mesh, is installed in the garbage collection well 14 through the filter channel 15, thereby allowing the water in the garbage collection well 14 to be filtered by the filter screen 16 before permeating into the interior of the sponge retention tank 11.

[0043] Reference Figure 2-4 As shown, a drainage inner enclosure 17 is installed on the top of the drainage ditch 12. The drainage inner enclosure 17 is located on the circumferential edge of the inner circumference of the drainage ditch 12 and is made of filter mesh material. A hollow ring 18 is coaxially installed on the outer circumference of the overflow well 13, and the top of the hollow ring 18 is flush with the top of the overflow well 13. A rotating ring 19 is rotatably installed on the inner side of the hollow ring 18 about its own axis. Several rotating fan blades 20 are installed on the outer circumference of the rotating ring 19 about its own axis. The rotating fan blades 20 are fitted close to the inner wall of the hollow ring 18, and a clearance groove 21 is formed on the top of the hollow ring 18 about its own axis.

[0044] Reference Figure 2-4 As shown, a drive ring 22 is fixed to the top of several rotating fan blades 20. The drive ring 22 passes through the top of the hollow ring 18 via a clearance slot 21. The inner and outer circumferential surfaces of the drive ring 22 are fitted against the inner wall of the clearance slot 21, thereby enabling the drive ring 22 to be rotatably mounted on the top of the hollow ring 18. The drive ring 22 rotates axially about the axis of the hollow ring 18. Several drainage slots 23 are formed on the circumferential surface of the drive ring 22 around its own axis, so that the drive ring 22 does not affect the flow of excess rainwater from the surface of the sponge retention tank 11 into the inner side of the overflow well 13. An inlet pipe 24 and an outlet pipe 25 are provided on the same side of the outer circumferential surface of the hollow ring 18. A booster pump 26 is installed on the outer wall of the overflow well 13, and an irrigation sprinkler 27 is installed above the sponge retention tank 11.

[0045] Reference Figure 2-4As shown, the hollow ring 18 is connected to the outlet port of the booster pump 26 via the inlet pipe 24. The inlet port of the booster pump 26 is connected to the bottom of the overflow well 13 via a water pipe. The hollow ring 18 is connected to the irrigation shower head 27 via the outlet pipe 25. A cleaning scraper 28 is rotatably mounted on the top of the drainage ditch 12 around its own axis. The cleaning scraper 28 is positioned so that the inner circumference of the drainage ditch 12 points towards the outer circumference of the drainage ditch 12. The cleaning scraper 28 is fixed to the circumference of the drive ring 22 by a long straight rod 29. The top of the irrigation shower head 27 is lower than the bottom of the long straight rod 29, so that the irrigation shower head 27 does not affect the rotation of the long straight rod 29. A straight infiltration pipe 30 is installed on the outer circumferential surface of the bottom of the overflow well 13. Four straight infiltration pipes 30 are evenly spaced around the axis of the overflow well 13.

[0046] Reference Figure 2-4 As shown, annular permeation pipes 31 are arranged around the periphery of the overflow well 13. Several annular permeation pipes 31 are arranged in an array at equal intervals, with the axis of the overflow well 13 as the axial direction and facing away from the overflow well 13. A sponge permeation column 32, made of absorbent sponge material, is vertically mounted on the top of each annular permeation pipe 31. Several sponge permeation columns 32 are arranged circumferentially around the axis of the overflow well 13. A drainage channel 33 is vertically formed on the top of the overflow well 13, penetrating the circumference of the overflow well 13. Four drainage channels 33 are formed circumferentially around the axis of the overflow well 13.

[0047] Reference Figure 2-4 As shown, the ports of the four straight-through permeation pipes 30 are respectively aligned with the four drainage outlets 33 of the overflow well 13, and the overflow well 13 is vertically connected to the drainage outlets 33 with barrier plates 34. The outer walls of the barrier plates 34 are fitted close to the inner walls of the drainage outlets 33. A circular box-shaped tray 36 is provided at the center of the top of the overflow well 13. The permeation sponge 37 is fixedly installed inside the circular box-shaped tray 36. The tops of the four barrier plates 34 are all installed on the outer circumference of the circular box-shaped tray 36 by limiting straight rods 38. Limiting floats 35 are fixedly installed on the side walls of the barrier plates 34 away from the straight-through permeation pipes 30.

[0048] A municipal wastewater treatment method, for operating the aforementioned municipal wastewater treatment equipment, includes the following steps:

[0049] S1. During rainy or rainy weather, rainwater from the municipal road surface continuously flows into the inner side of the drainage ditch 12. The rainwater in the drainage ditch 12 is first filtered by the drainage inner enclosure 17 made of filter wire mesh. The filtered rainwater then flows into the sponge retention tank 11. The garbage and impurities in the rainwater are intercepted by the drainage inner enclosure 17 and sent to the drainage ditch 12.

[0050] S2. The green plants and soil in the sponge retention pond 11 continuously absorb rainwater until there is excess rainwater on the surface of the sponge retention pond 11. The excess rainwater continues to rise until it overflows the top of the overflow well 13, and the rainwater is poured into the interior of the overflow well 13 for storage.

[0051] S3. The permeable sponge 37 inside the round box tray 36 continuously absorbs rainwater. The weight of the round box tray 36 continuously increases and gradually presses down the barrier strip 34, causing the barrier strip 34 to slide in the vertical downward direction until the barrier strip 34 seals the drain outlet 33 of the overflow well 13, thereby achieving the isolation between the overflow well 13 and the straight-through permeable pipe 30.

[0052] S4. During sunny or scorching weather, the rainwater that seeps into the plants and soil in the sponge retention pond 11 evaporates continuously, and the plants and soil urgently need water for irrigation.

[0053] S5. As the water in the permeable sponge 37 evaporates continuously, the weight in the round box tray 36 decreases continuously. The limiting float 35 drives the four barrier plates 34 to slide vertically upward through the buoyancy of the rainwater inside the overflow well 13, thereby realizing the connection between the overflow well 13 and the straight-through permeable pipe 30.

[0054] S6. Rainwater inside the overflow well 13 flows into the interior of the sponge infiltration column 32 through the straight infiltration pipe 30 and the annular infiltration pipe 31, thereby achieving uniform delivery of rainwater to various locations of the sponge retention tank 11.

[0055] S7. The booster pump 26 starts and draws the rainwater inside the overflow well 13 into the hollow ring 18. The water flow inside the hollow ring 18 drives several rotating fan blades 20 to rotate. The several rotating fan blades 20 drive the drive ring 22 to rotate. The drive ring 22 drives the cleaning scraper 28 to rotate around the axis of the drainage ditch 12 via the long straight rod 29. The rotating cleaning scraper 28 sweeps the garbage and impurities to the garbage collection well 14.

[0056] S8. Rainwater in the garbage collection well 14 is first filtered by the filter screen 16, and then the filtered rainwater permeates into the sponge retention tank 11.

[0057] S9. Rainwater inside the hollow ring 18 flows into the irrigation sprinkler 27 through the water outlet pipe 25. The rainwater is sprayed onto the surface of the sponge retention pool 11 through the irrigation sprinkler 27 to minimize the risk of leaf burn to the plants inside the sponge retention pool 11.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A municipal sewage treatment device, comprising a sponge retention tank (11), a drainage ditch (12) arranged on the side of the sponge retention tank (11), and an overflow water well (13) arranged inside the sponge retention tank (11); the overflow water well (13) exceeds the top of the sponge retention tank (11), characterized in that: Further comprising a drainage inner enclosure (17) installed on the top of the drainage ditch (12), which is provided with a ring along the circumferential edge of the drainage ditch (12), and is enclosed by water filtering screen material; The drainage ditch (12) is provided with cleaning components for garbage collection, which includes a plurality of garbage collection wells (14) provided on the inner side of the drainage ditch (12), and a cleaning scraper (28) provided on the top of the drainage ditch (12); the cleaning scraper (28) is arranged in a direction from the inner periphery of the drainage ditch (12) to the outer periphery of the drainage ditch (12), and is arranged to rotate around the axis of the drainage ditch (12); The overflow well (13) is provided with a driving component for driving the rotation of the cleaning scraper (28), which includes a hollow ring (18) arranged on the side of the overflow well (13), a rotating ring (19) rotatably installed on the inner side of the hollow ring (18), and a plurality of rotating vanes (20) fixed on the side of the rotating ring (19); the top of the plurality of rotating vanes (20) is fixed with a ring of driving rings (22), and the cleaning scraper (28) is fixed on the side of the driving ring (22); the driving ring (22) is arranged to rotate around the axis of the hollow ring (18), and the side of the hollow ring (18) is provided with a water inlet pipe (24) and a water outlet pipe (25); The side of the hollow ring (18) is provided with a power component, which includes a booster pump (26) installed on the side wall of the overflow well (13) and an irrigation shower (27) arranged above the sponge retention pool (11); the water outlet pipe (25) is connected with the irrigation shower (27), the water inlet pipe (24) is connected with the water outlet port of the booster pump (26), and the water inlet port of the booster pump (26) is connected with the overflow well (13); The sponge retention pool (11) is provided with a permeation component for rainwater diffusion, which includes a plurality of straight-through permeation pipes (30) arranged on the side of the overflow well (13), a plurality of annular permeation pipes (31) arranged horizontally on the side of the overflow well (13), and a plurality of sponge permeation columns (32) arranged vertically on the top of the annular permeation pipe (31); The overflow well (13) is provided with a limiting component for controlling rainwater diffusion, which includes a plurality of water discharge slots (33) penetrating the side of the overflow well (13), a plurality of barrier strips (34) inserted into the side of the overflow well (13) through the water discharge slots (33), and a plurality of straight-through permeation pipes (30) respectively aligned with a plurality of water discharge slots (33).

2. The municipal sewage treatment equipment according to claim 1, characterized in that: The overflow well (13) is provided with an induction component for controlling the lifting of the barrier strip (34), which includes a round box type tray (36) provided at the top of the overflow well (13) and a permeable sponge (37) installed inside the round box type tray (36); and the barrier strip (34) is fixed to the periphery of the round box type tray (36).

3. The municipal sewage treatment equipment according to claim 1, characterized in that: A limiting float (35) is installed on the inner side wall of the barrier strip (34).

4. A method for municipal wastewater treatment for operating a municipal wastewater treatment plant according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: S1, the rainwater of the municipal road surface continuously flows into the inner side of the drainage ditch (12), and the rainwater in the drainage ditch (12) is first filtered by the drainage inner enclosure (17), and then the filtered rainwater flows into the sponge retention pool (11); S2, the surplus rainwater continuously rises until it overflows the top of the overflow well (13), and the rainwater is poured into the interior of the overflow well (13) for storage; S3, the induction component presses down the barrier strip (34) until the limiting component blocks the communication between the overflow well (13) and the straight-through permeable pipe (30); S4, during sunny or sunny weather, the limiting float (35) drives the barrier strip (34) to rise by the buoyancy of the rainwater in the overflow well (13) until the limiting component opens the communication between the overflow well (13) and the straight-through permeable pipe (30); S5, the rainwater in the overflow well (13) is uniformly delivered to each position of the sponge retention pool (11) by the permeation component; S6, the power component drives the driving circular ring (22) to rotate, and the driving circular ring (22) drives the cleaning scraper (28) to rotate around the axis of the drainage ditch (12), and the rotating cleaning scraper (28) sweeps the garbage and impurities to the garbage collection well (14); S7, the rainwater flows into the irrigation shower (27) through the water outlet pipe (25), and the rainwater is sprayed to the surface of the sponge retention pool (11) through the irrigation shower (27).

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