Ecological system suitable for land shortage
By designing a vertical and reverse-arranged sewage treatment system in rural areas, the problem of difficulty in applying sewage treatment plants and wetland systems in land-constrained areas has been solved, and efficient sewage treatment and the provision of a growing environment for crops have been achieved, with economic benefits and high land utilization rate.
Patent Information
- Application Number
- CN202422591359.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-25
AI Technical Summary
Existing sewage treatment plants and wetland systems are difficult to apply in rural areas where land is scarce, making it difficult to solve the problem of rural sewage pollution while encroaching on crop land.
An ecosystem consisting of a primary sewage treatment system and a secondary sewage treatment system was designed. Through vertically and reversely arranged water distribution layers, ecological filter layers, and water collection layers, combined with inlet pipes, outlet pipes, and connecting pipes, two-stage sewage treatment was achieved, avoiding encroachment on crop land and providing a suitable growth environment.
It achieves efficient sewage treatment without encroaching on crop land, improves land utilization, provides a growth environment for crops, has economic benefits, and reduces construction costs.
Smart Images
Figure CN223342518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to an ecological system suitable for land-constrained areas. Background Art
[0002] Existing rural sewage primarily consists of domestic wastewater and livestock wastewater. Due to the low economic level of rural areas, villages lack sewage systems, causing domestic wastewater to flow along the surface and eventually enter surface water bodies, polluting rivers. Currently, sewage treatment plants and wetland systems are the main methods for treating wastewater, but both are difficult to implement in rural areas, as detailed below.
[0003] Sewage treatment plants: Due to narrow rural roads, random village layouts, and limitations such as village size and investment, sewage treatment plants are difficult to put into use in rural areas.
[0004] Wetland system: The available suitable open land in rural areas cannot meet the needs of wetland construction, which often requires the expropriation of farmland, affecting crop yields and the production and life of villagers.
[0005] Therefore, for rural areas with limited land use or poor soil and poor soil permeability, we need to propose an ecosystem suitable for the local area to provide a suitable growth environment for crops and solve the problem of wetlands encroaching on crop land. Utility Model Content
[0006] In view of this, it is necessary to provide an ecosystem suitable for land-constrained areas to solve the problem that the existing ecosystem is difficult to provide a suitable growth environment for crops and to solve the problem of encroachment on crop land.
[0007] The utility model provides an ecosystem suitable for land-constrained areas, comprising a first sewage treatment system, a second sewage treatment system, a water inlet pipe, a water outlet pipe and a connecting pipe. The first sewage treatment system comprises a first water distribution layer, a first ecological filter layer, a first water collection layer and a matrix layer arranged in sequence along a vertical upward direction. The second sewage treatment system comprises a covering layer, a second water distribution layer, a second ecological filter layer and a second water collection layer arranged in sequence along a vertical downward direction. The water inlet end of the water inlet pipe is used to connect sewage and an air source, and the water outlet end is connected to the first water distribution layer. The water inlet end of the water outlet pipe is connected to the second water collection layer, and its water outlet end is used to discharge treated sewage. The water inlet end of the connecting pipe is connected to the first water collection layer, and the water outlet end is inclined downward and connected to the second water distribution layer.
[0008] Furthermore, the first sewage treatment system also includes a plurality of first water distribution pipes installed in the first water distribution layer, the water outlet end of the water inlet pipe is connected to the plurality of first water distribution pipes, both ends of the first water distribution pipe are closed and a plurality of water distribution holes are opened thereon.
[0009] Furthermore, the first sewage treatment system also includes a plurality of first water collecting pipes installed in the first water collecting layer, the first water collecting pipes are provided with through holes, and the water inlet end of the connecting pipe is connected to the plurality of first water collecting pipes.
[0010] Furthermore, the first sewage treatment system also includes a first anti-seepage layer arranged below the first water distribution layer.
[0011] Furthermore, the second sewage treatment system also includes a plurality of second water distribution pipes installed in the second water distribution layer, the water outlet end of the connecting pipe is connected to the plurality of second water distribution pipes, both ends of the second water distribution pipes are closed and a plurality of water distribution holes are opened thereon.
[0012] Furthermore, the second sewage treatment system also includes a plurality of second water collecting pipes installed in the second water collecting layer, the second water collecting pipes are provided with through holes, and the water inlet end of the outlet pipe is connected to the plurality of second water collecting pipes.
[0013] Furthermore, the second sewage treatment system also includes a second anti-seepage layer arranged below the second water collection layer.
[0014] Furthermore, a valve is installed on the connecting pipe.
[0015] Furthermore, a plurality of the first water collecting pipes are arranged between the first water collecting layer and the substrate layer.
[0016] Furthermore, a plurality of the second water distribution pipes are arranged at a middle position of the second water distribution layer.
[0017] Compared with the existing technology, crops can be planted on the matrix layer and the covering layer. Rural sewage flows through the first water distribution layer, the first ecological filter layer and the first water collection layer in sequence from the water inlet pipe. The first sewage treatment system treats the sewage. Under the action of gravity, the sewage flows into the second sewage treatment system through the connecting pipe. The sewage flows through the second water distribution layer, the second ecological filter layer and the second water collection layer in sequence, thereby realizing secondary treatment of the sewage and finally being discharged from the outlet pipe. This ecosystem not only does not encroach on the land used for crops, but the sewage that has been initially treated can also provide water to the matrix layer and the covering layer, that is, provide a suitable growth environment for crops. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present invention suitable for an ecosystem with limited land use. DETAILED DESCRIPTION
[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.
[0020] like Figure 1 As shown, the utility model provides an ecosystem suitable for land-constrained areas, including a first sewage treatment system 100, a second sewage treatment system 200, an inlet pipe 300, an outlet pipe 400 and a connecting pipe 500. The first sewage treatment system 100 includes a first water distribution layer 110, a first ecological filter layer 120, a first water collection layer 130 and a matrix layer 140 arranged in sequence along a vertical upward direction. The second sewage treatment system 200 includes a covering layer 210, a second water distribution layer 220, a second ecological filter layer 230 and a second water collection layer 240 arranged in sequence along a vertical downward direction. The water inlet end of the inlet pipe 300 is used to connect sewage and an air source, and the water outlet end is connected to the first water distribution layer 110. The water inlet end of the outlet pipe 400 is connected to the second water collection layer 240, and its water outlet end is used to discharge treated sewage. The water inlet end of the connecting pipe 500 is connected to the first water collection layer 130, and the water outlet end is inclined downward and connected to the second water distribution layer 220.
[0021] During implementation, crops can be planted on the matrix layer 140 and the covering layer 210. Rural sewage flows from the water inlet pipe 300 through the first water distribution layer 110, the first ecological filter layer 120 and the first water collection layer 130 in sequence. The first sewage treatment system 100 treats the sewage. Under the action of gravity, the sewage flows into the second sewage treatment system 200 through the connecting pipe 500. The sewage flows through the second water distribution layer 220, the second ecological filter layer 230 and the second water collection layer 240 in sequence, thereby realizing secondary treatment of the sewage and finally being discharged from the outlet pipe 400. This ecosystem not only does not encroach on the land used for crops, but the sewage after primary treatment can also provide water to the matrix layer 140 and the covering layer 210, that is, provide a suitable growth environment for crops.
[0022] The first sewage treatment system 100 in this embodiment includes a first water distribution layer 110 , a first ecological filter layer 120 , a first water collection layer 130 and a matrix layer 140 , which are sequentially arranged in a vertically upward direction.
[0023] Among them, the first sewage treatment system 100 also includes multiple first water distribution pipes 111 installed in the first water distribution layer 110, the water outlet end of the water inlet pipe 300 is connected to the multiple first water distribution pipes 111, and the two ends of the first water distribution pipe 111 are closed and have multiple water distribution holes on them.
[0024] In one embodiment, the thickness of the first water distribution layer 110 is 20 cm. The first water distribution layer 110 is filled with gravel with a particle size of 2-10 mm. A first water distribution pipe 111 is arranged in the water distribution layer. The first water distribution pipe 111 is a PVC perforated pipe. The diameter of the first water distribution pipe 111 is 7 cm. The spacing between multiple first water distribution pipes 111 is 30 cm. The side wall and bottom of the first water distribution pipe 111 are provided with multiple water distribution holes with a hole diameter of 4 mm and a hole spacing of 2 cm. The outer side of the first water distribution pipe 111 is wrapped with polyethylene gauze and the laying angle is 3°.
[0025] In one embodiment, the first ecological filter layer 120 is 40 cm thick and filled with 15-35 mm porous media—ecological water purification ceramsite. This layer is primarily used to filter and intercept pollutants in sewage, playing a crucial role in wastewater purification. The operating principles are as follows: 1) Suspended matter precipitated by the incoming water is rapidly absorbed into the pores of the ecological water purification ceramsite; 2) Due to the high porosity and excellent adsorption properties of the ecological water purification ceramsite, not only is the microbial attachment rate high, but pollutants are also effectively intercepted, allowing them to be decomposed and absorbed by microorganisms attached to the pores of the ecological water purification ceramsite; 3) The ecological water purification ceramsite enhances the oxygen permeability of the wetland matrix.
[0026] The first sewage treatment system 100 further includes a plurality of first water collecting pipes 112 installed in the first water collecting layer 130 . Through holes are provided on the first water collecting pipes 112 . The water inlet end of the connecting pipe 500 is connected to the plurality of first water collecting pipes 112 .
[0027] In one embodiment, the first water collection layer 130 is made of soil, 2-5mm sand, and 5-10mm coal slag in a ratio of 4:4:2, with a filling thickness of 30cm. The first water collection pipe 112 is arranged on the upper part of the inner cavity of the first water collection layer 130. The first water collection pipe 112 is a PVC perforated pipe. The diameter of the first water collection pipe 112 is 8cm. The spacing between multiple first water collection pipes 112 is 40cm. The side walls and bottom of the first water collection pipe 112 are provided with multiple through holes with a hole diameter of 5mm and a hole spacing of 3cm. The laying angle of the first water collection pipe 112 is 3°. The outside of the first water collection pipe 112 is wrapped with polyethylene gauze and filled with 5-10mm gravel around it.
[0028] In one embodiment, the substrate layer 140 is 30cm-50cm of fertile cultivated soil, on which crops with relatively developed root systems, such as cotton, can be planted. The roots of crops in the substrate layer 140 not only provide more growth and attachment space for organisms, but also increase the oxygen content of the substrate layer 140, thereby improving the sewage purification capacity of the system.
[0029] The first sewage treatment system 100 further includes a first anti-seepage layer 113 disposed below the first water distribution layer 110 .
[0030] In one embodiment, the first anti-seepage layer 113 is made of an anti-seepage geotextile with a thickness of 0.1-0.5 mm to prevent sewage from directly seeping in and polluting groundwater.
[0031] The second sewage treatment system 200 in this embodiment includes a covering layer 210 , a second water distribution layer 220 , a second ecological filter layer 230 and a second water collection layer 240 , which are sequentially arranged in a vertical downward direction.
[0032] Among them, the second sewage treatment system 200 also includes multiple second water distribution pipes 211 installed in the second water distribution layer 220, the water outlet end of the connecting pipe 500 is connected to the multiple second water distribution pipes 211, and the two ends of the second water distribution pipes 211 are closed and have multiple water distribution holes on them.
[0033] In one embodiment, the covering layer 210 is in-situ soil filling with a thickness of 25 cm, which is used to provide nutrients for vegetation growth. The plants that can be planted are herbs or shrubs with relatively developed root systems, such as Bermuda grass, ryegrass, and Photinia fraseri.
[0034] In one embodiment, the thickness of the second water distribution layer 220 is 30 cm, and it is composed of a matrix made of soil, 2-5 mm sand, and 5-10 mm coal slag in a ratio of 4:3:3. The interior of the second water distribution layer 220 is paved with a watertight dish made of high-density polyethylene material. Directly above it is the second water distribution pipe 211, and the watertight dish is filled with gravel with a particle size of 8-15 mm.
[0035] Among them, the second water distribution pipe 211 is arranged in the second water distribution layer 220, the diameter of the second water distribution pipe 211 is 8 cm, the spacing between multiple second water distribution pipes 211 is 40 cm, and the side walls and bottom of the second water distribution pipe 211 are provided with multiple water distribution holes with a hole diameter of 5 mm and a hole spacing of 3 cm. The outer side of the second water distribution pipe 211 is wrapped with polyethylene gauze, and the laying angle of the second water distribution pipe 211 is 3°.
[0036] In one embodiment, the thickness of the second ecological filter layer 230 is 50 cm, and the filling material of the second ecological filter layer 230 is 15-35 mm porous medium filter material - ecological water purification ceramsite, which is mainly used to filter and intercept pollutants in sewage and is an important layer for sewage purification.
[0037] The second sewage treatment system 200 further includes a plurality of second water collecting pipes 212 installed in the second water collecting layer 240 . The second water collecting pipes 212 are provided with through holes. The water inlet end of the outlet pipe 400 is connected to the plurality of second water collecting pipes 212 .
[0038] In one embodiment, the thickness of the second water-collecting layer 240 is 20 cm, and the second water-collecting layer 240 is composed of 5-15 mm gravel. A second water-collecting pipe 212 is arranged inside the second water-collecting layer 240. The diameter of the second water-collecting pipe 212 is 10 cm, and the spacing between multiple second water-collecting pipes 212 is 60 cm. The side walls and bottom of the second water-collecting pipe 212 are provided with multiple water distribution holes with a hole diameter of 8 mm and a hole spacing of 4 cm. The outer side of the second water-collecting pipe 212 is wrapped with polyethylene gauze, and the laying angle of the second water-collecting pipe 212 is 3°.
[0039] The second sewage treatment system 200 further includes a second anti-seepage layer 213 disposed below the second water collection layer 240 .
[0040] In one embodiment, the second anti-seepage layer 213 has a thickness of 0.1-0.5 mm and is made of an anti-seepage geotextile to prevent sewage from directly seeping into the groundwater and polluting the groundwater.
[0041] In this embodiment, the water inlet pipe 300 is used to transport untreated rural sewage to the first water distribution layer 110 or to serve as an aeration pipe to aerate the system. Specifically, the water inlet pipe 300 connects to the outside world for aeration and reoxygenation, allowing air to enter the system. The inlet pipe 300, combined with the intermittent water distribution mode, aerates the water during water inflow and directly into the first water distribution pipe 111 when water is not flowing.
[0042] The outlet pipe 400 in this embodiment is used to output the treated rural sewage.
[0043] The connecting pipe 500 in this embodiment is used to connect the first water collection layer 130 and the second water distribution layer 220, so that the sewage flows through the first sewage treatment system 100 and the second sewage treatment system 200 in sequence, and the sewage is subjected to secondary treatment, which has better sewage treatment effect and higher treatment efficiency.
[0044] In one embodiment, a valve 510 is installed on the connecting pipe 500. After passing through the first sewage treatment system 100, sewage flows through the connecting pipe 500 into the second sewage treatment system 200. The connecting pipe 500 has a diameter of 8 cm and is equipped with a valve 510. This valve 510 regulates the water level in the first sewage treatment system 100 to ensure water supply for crops.
[0045] In one embodiment, the plurality of first water collection pipes 112 are disposed between the first water collection layer 130 and the matrix layer 140 , and the plurality of second water distribution pipes 211 are disposed in the middle of the second water distribution layer 220 .
[0046] Compared with existing technologies:
[0047] 1) High land utilization rate: The wetland treatment system occupies a large area. The present invention constructs a matrix environment that is conducive to crop growth by adjusting the matrix layer 140 of the first sewage treatment system 100, thereby improving land utilization rate.
[0048] 2) Strong controllability: A valve 510 is arranged on the connecting pipe 500 between the first sewage treatment system 100 and the second sewage treatment system 200, and the water supply is regulated according to the growth needs of crops in the first sewage treatment system 100 to ensure the water demand of crops.
[0049] 3) Has certain economic benefits: Compared with ordinary wetland treatment systems, this ecosystem has increased the planting of crops, which not only ensures the ecological benefits of the system, but also has certain economic benefits.
[0050] 4) Low investment: The water distribution method is adjusted so that the water collected by the first sewage treatment system 100 is slightly higher than the water distribution of the second sewage treatment system 200, meeting the need for gravity flow of sewage and reducing construction costs. The water inlet pipe 300 also serves as a vent pipe, aerating the water when water is entering, and directly aerating the water into the first water distribution pipe 111 when no water is entering, thereby reducing pipeline construction costs.
[0051] 5) Good coupling treatment effect: The first sewage treatment system 100 and the second sewage treatment system 200 are coupled to form this ecosystem, which is equivalent to two-stage sewage treatment, and has a better sewage treatment effect and higher treatment efficiency.
[0052] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.
Claims
1. An ecosystem suitable for land-constrained areas, characterized in that: include: The first sewage treatment system comprises a first water distribution layer, a first ecological filter layer, a first water collection layer and a matrix layer arranged in sequence in a vertical upward direction; The second sewage treatment system includes a covering layer, a second water distribution layer, a second ecological filter layer, and a second water collection layer arranged in sequence in a vertical downward direction; A water inlet pipe, the water inlet end of which is used to connect sewage and the air source, and the water outlet end of which is connected to the first water distribution layer; an outlet pipe, the water inlet end of which is connected to the second water collecting layer, and the water outlet end of which is used to discharge the treated sewage; The connecting pipe has a water inlet end connected to the first water collecting layer, and a water outlet end inclined downward and connected to the second water distribution layer.
2. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: The first sewage treatment system also includes a plurality of first water distribution pipes installed in the first water distribution layer. The water outlet end of the water inlet pipe is connected to the plurality of first water distribution pipes. Both ends of the first water distribution pipe are closed and a plurality of water distribution holes are opened thereon.
3. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: The first sewage treatment system further includes a plurality of first water collecting pipes installed in the first water collecting layer. Through holes are provided on the first water collecting pipes. The water inlet end of the connecting pipe is connected to the plurality of first water collecting pipes.
4. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: The first sewage treatment system further includes a first anti-seepage layer disposed below the first water distribution layer.
5. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: The second sewage treatment system also includes multiple second water distribution pipes installed in the second water distribution layer. The water outlet end of the connecting pipe is connected to the multiple second water distribution pipes. Both ends of the second water distribution pipes are closed and have multiple water distribution holes.
6. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: The second sewage treatment system further includes a plurality of second water collecting pipes installed in the second water collecting layer. Through holes are opened on the second water collecting pipes. The water inlet end of the outlet pipe is connected to the plurality of second water collecting pipes.
7. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: The second sewage treatment system further includes a second anti-seepage layer disposed below the second water collection layer.
8. The ecosystem suitable for land-constrained areas according to claim 1, characterized in that: A valve is installed on the connecting pipe.
9. The ecosystem suitable for land-constrained areas according to claim 3, characterized in that: A plurality of first water collecting pipes are disposed between the first water collecting layer and the substrate layer.
10. The ecosystem suitable for land-constrained areas according to claim 5, characterized in that: A plurality of the second water distribution pipes are arranged at a middle position of the second water distribution layer.