Ecological purification system suitable for rural landforms
By designing a multi-layer filler purification zone and an ecological purification system with foldable water collection pipes in rural landforms, the problems of low efficiency and poor landform adaptability in rural sewage treatment are solved, and efficient and low-cost sewage purification effect is achieved.
Patent Information
- Application Number
- CN202421604005.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Rural domestic sewage treatment efficiency is low, tail water quality does not meet the standards, treatment capacity is insufficient, and traditional sewage purification facilities are high in construction costs and operational energy consumption, and it is difficult to adapt to winding landforms.
An ecological purification system suitable for rural landforms was designed, multiple ecological purification underflow sections were set up using the original drainage ditches, and steep slope self-flow sections were set up in the staggered layers at the large terrain drop. Multi-layer filler purification zones and foldable water collection pipes were used. Combining wet plant layer and multi-layer filter structure, a flexible sewage purification system is formed.
It improves the flexibility and continuity of the sewage purification path, adapts to the winding landform, improves the sewage purification coverage, realizes low-cost and low-energy consumption domestic sewage treatment, and meets the needs of rural decentralized sewage treatment.
Smart Images
Figure CN222250289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of domestic sewage purification, in particular to an ecological purification system adapted to rural landforms. Background Art
[0002] Rural domestic sewage includes farmers' washing, bathing and kitchen drainage. Domestic sewage treatment is a "shortcoming" in the improvement of rural living environment. At present, although most rural areas in my country have a certain domestic sewage purification capacity, they still face the difficulties of low treatment efficiency, substandard water quality of treated effluent, insufficient treatment capacity and shortage of operating funds.
[0003] In addition, traditional sewage purification facilities have high construction costs and high energy consumption, while existing ecological purification technologies such as artificial wetlands are not only restricted by the nature of surrounding land use, but also occupy a large area and have poor flexibility. In addition, these technologies focus on the terminal treatment of domestic sewage, lack ecological source control and pollution interception on the discharge path, and are difficult to adapt to the winding and tortuous rural landscape with large terrain differences. Utility Model Content
[0004] The utility model discloses an ecological purification system adapted to rural landforms, which can conform to and continue the natural topography of rural areas, flexibly adapt to the winding forms of rural roads, ditches and farmland boundaries, and effectively solve the core problem of rural decentralized domestic sewage treatment (nitrogen removal and phosphorus removal) by using the original drainage ditch on the discharge path of domestic sewage, and can meet the requirements of low technical cost, low energy consumption and simple operation and management, thereby improving the problem that the existing purification system is difficult to adapt to rural landforms.
[0005] The utility model adopts the following scheme:
[0006] An ecological purification system adapted to rural landforms comprises a plurality of ecological purification subsurface flow sections arranged using original drainage ditches, and a steep slope gravity flow section is arranged in a staggered manner between two ecological purification subsurface flow sections with a large terrain difference, so that water overflowing from the upper ecological purification subsurface flow section flows from the steep slope gravity flow section into the lower ecological purification subsurface flow section; a multi-layer filler purification area is arranged at the water inlet end of each of the ecological purification subsurface flow sections, a water collection bin is arranged at the water outlet end of each of the ecological purification subsurface flow sections, the water inlet end is connected with the water outlet end via a water collection pipe, domestic sewage flows in from the water inlet end, enters the water collection pipe after being purified by the multi-layer filler, and is merged into the water collection bin through the water collection pipe, wherein the water collection pipe is foldable and retractable, so that the length and bending angle of the water collection pipe can be adjusted according to the width of the plane hinterland and the terrain height difference.
[0007] As a further improvement, the ecological purification subsurface flow section is provided with a plurality of branch pipes in parallel in a wide area of the plane hinterland, each of the branch pipes is connected to the water collecting pipe via a joint, and a plurality of water collecting holes are evenly distributed on the branch pipes.
[0008] As a further improvement, the multi-layer filler includes a wetland plant layer, a planting soil layer, a first permeable geotextile, a multi-porous solid matrix layer, a second permeable geotextile, a pebble layer, a waterproof blanket, and a plain soil compaction layer, which are laid in sequence from top to bottom.
[0009] As a further improvement, the water collecting pipe is provided with a water collecting section, the water collecting section is arranged in the pebble layer, and a plurality of water inlet holes are arranged at intervals along the water collecting section.
[0010] As a further improvement, the pebble particle size of the pebble layer is not less than 30 mm.
[0011] As a further improvement, brick walls are provided at the front and rear ends of the ecological purification undercurrent section, and the waterproof blanket is clamped in the brick walls. It is covered with soil or pressed with rocks on both sides of the ditch wall of the ecological purification undercurrent section to enclose the entire ecological purification undercurrent section and its shape can be adjusted according to the width of the plane hinterland.
[0012] As a further improvement, the water collecting pipe has a water passing section, which passes through the planting soil layer upward from the pebble layer and is arranged higher than the planting soil layer to form a dredging water inlet end.
[0013] As a further improvement, the water collecting pipe is a foldable PVC drilled corrugated pipe.
[0014] As a further improvement, the water collection bin is made of prefabricated reinforced concrete.
[0015] As a further improvement, the wetland plant layer includes one or more of daylilies, irises, small palm bamboo, loosestrife, pennywort, and Cyperus rotundus.
[0016] By adopting the above technical solution, the utility model can achieve the following technical effects:
[0017] 1. This application purifies domestic sewage through a multi-layer filler purification area, and sets up ecological purification undercurrent sections and steep slope gravity sections in staggered layers where the terrain difference is large, which can conform to the rural terrain and eliminate the influence of the terrain height difference. A water collection tank is set at the outlet end of the ecological purification undercurrent section to maintain the water storage state of the ecological purification undercurrent section, play a role in regulating the water level of the ecological purification undercurrent section, and improve the flexibility and continuity of the sewage purification path, thereby forming a stable and continuous sewage collection and purification system. At the same time, a foldable and retractable water collection pipe is set in the ecological purification undercurrent section, and the ecological purification system can be arranged according to local conditions, so that the ecological purification system can adapt to the winding rural landforms and improve the coverage rate of rural sewage purification.
[0018] 2. The ecological purification undercurrent section is equipped with multiple branch pipes in parallel in the wide area of the flat land, so as to improve the water collection efficiency in the wide area and balance the water level in the ecological purification undercurrent section.
[0019] 3. The multi-layer filler includes a wet plant layer, a planting soil layer, a first permeable geotextile, a multi-porous solid matrix layer, a second permeable geotextile, a pebble layer, a waterproof blanket, and a rammed soil layer, which are laid from top to bottom. Through multi-layer filtration, domestic sewage is purified and ecological optimization is achieved. Among them, the well-developed root system of wet plants can directly absorb some nitrogen and phosphorus substances, and the released oxygen can provide living conditions for microorganisms. The two complement each other to form a three-dimensional and stable ecological environment, which is conducive to the adsorption and dissolution of pollutants in the water, and effectively purify rural domestic sewage.
[0020] 4. The water collecting pipe is provided with a water collecting section, which is arranged in the pebble layer, and a second permeable geotextile is laid on the pebbles to avoid blockage of the water inlet hole and ensure smooth water flow.
[0021] 5. The waterproof blanket encloses the entire ecological purification subsurface flow section, and can be adjusted according to the width and narrowness of the on-site terrain, flexibly adapting to the winding forms of rural roads, ditches and farmland boundaries, and adjusting the shape and size according to local conditions, effectively improving the coverage rate of decentralized domestic sewage source control and interception in rural areas. At the same time, it ensures that the subsurface flow section can be normally stored with water, ensuring the continued survival of microorganisms in the ecological purification subsurface flow section and the luxuriant growth of wetland plants on the top.
[0022] 6. The water collection bin is made of prefabricated reinforced concrete, which can achieve standardized production, controllable quality, fast construction speed, flexible and simple layout, which is conducive to application in rural areas. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a cross-sectional view of one embodiment of the utility model;
[0025] Figure 2 It is a partial enlarged view of one embodiment of the utility model;
[0026] Figure 3 It is a plan view of one embodiment of the utility model;
[0027] icon:
[0028] 1-Previous ecological purification undercurrent section;
[0029] 2-The next ecological purification undercurrent section;
[0030] 3-steep slope gravity section;
[0031] 4-multi-layer filler purification area; 41-wet plant layer; 42-planting soil layer; 43-first permeable geotextile; 44-multi-porous solid matrix layer; 45-second permeable geotextile; 46-pebble layer; 47-waterproof blanket; 48-plain soil compaction layer;
[0032] 5-Water collection tank;
[0033] 6-water collecting pipe; 61-water collecting section; 611-water inlet hole; 62-water passing section;
[0034] 7- branch pipe; 71- water collection hole;
[0035] 8-brick wall; 82-cement mortar cushion;
[0036] 9-Rocks. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0038] Example
[0039] Combination Figure 1 and Figure 3The present embodiment provides an ecological purification system adapted to rural landforms, including a plurality of ecological purification subsurface flow sections set up using the original drainage ditch, and staggeredly setting a steep slope gravity flow section 3 between two ecological purification subsurface flow sections with a large potential difference, so that the overflow of the upper ecological purification subsurface flow section 1 flows from the steep slope gravity flow section 3 into the next ecological purification subsurface flow section 2; a multi-layer filler purification area 4 is provided at the water inlet end of each ecological purification subsurface flow section, and a water collection tank 5 is configured at the water outlet end of the ecological purification subsurface flow section, and the water inlet end and the water outlet end are connected via a water collection pipe 6, and domestic sewage flows into the water inlet end of the ecological purification subsurface flow section, enters the water collection pipe 6 after being purified by the multi-layer filler, and is merged into the water collection tank 5 through the water collection pipe 6, wherein the water collection pipe 6 is foldable and retractable, so that the length and bending angle of the water collection pipe 6 can be adjusted according to the terrain or landform.
[0040] Among them, the staggered setting in this application refers to the segmented setting at a location with a large difference in terrain. Exemplarily, this embodiment is applied to mountainous rural areas, and the difference in height between the two ecological purification subsurface flow sections exceeds 2 meters. The domestic sewage of the upper ecological purification subsurface flow section 1 enters the first-level water collection tank after being purified by the first-level multi-layer filler area. When the water in the first-level water collection tank overflows, it can naturally flow into the next-level ecological purification subsurface flow section 2 along the steep slope gravity section 3 of the mountain, and be purified by the second-level multi-layer filler purification area, and so on. Among them, the water collection pipe 6 is preferably a foldable PVC drilled corrugated pipe. Due to its foldable and retractable properties, it can be folded and retracted according to the terrain or landform of the mountain, so as to adapt to the environment such as steep slopes, winding roads or farmland boundaries, thereby improving the coverage rate of rural domestic sewage.
[0041] It should be mentioned that, in this embodiment, domestic sewage is purified by a multi-layer filler purification area 4, and an ecological purification undercurrent section and a steep slope gravity section 3 are arranged in staggered layers between two ecological purification undercurrent sections with a large terrain drop, which can conform to the rural terrain and eliminate the influence of the terrain height difference. A water collection tank 5 is arranged at the outlet end of the ecological purification undercurrent section, which can maintain the water storage state of the ecological purification undercurrent section, play a role in regulating the water level of the ecological purification undercurrent section, and improve the flexibility and continuity of the sewage purification path, thereby forming a stable and continuous sewage collection and purification system. At the same time, a foldable and retractable water collection pipe 6 is arranged in the ecological purification undercurrent section, and the ecological purification system can be arranged according to local conditions, so that the ecological purification system can adapt to the rural landform and improve the coverage rate of rural sewage purification.
[0042] In a preferred embodiment, a plurality of branch pipes 7 are arranged in parallel in the wide area of the flat land of the ecological purification subsurface flow section, and the branch pipes 7 are connected to the water collecting pipe 6 through a joint, and a plurality of water collecting holes 71 are evenly arranged on the branch pipes 7. The wide area can be a position greater than 2m, and the narrow area less than 2m is arranged in the form of a single pipe. In one embodiment, a branch pipe 7 is arranged at every 1m interval, so as to improve the water collection efficiency and the uniform water level in the ecological purification subsurface flow section. The branch pipe 7 is preferably made of the same material and diameter as the water collecting pipe 6.
[0043] On the basis of the above-mentioned embodiments, in an optional embodiment of the utility model, the multi-layer filler includes a wet plant layer 41, a planting soil layer 42, a first permeable geotextile 43, a multi-void solid matrix layer 44, a second permeable geotextile 45, a pebble layer 46, a waterproof blanket 47, and a plain soil ramming layer 48, which are laid in sequence from top to bottom. For example, the planting soil layer 42 is laid with a thickness of 200 mm, the thickness of the first permeable geotextile 43 is 5 mm, the thickness of the multi-void solid matrix layer 44 (mushroom house) is 300 mm, the thickness of the second permeable geotextile 45 is 5 mm, and the thickness of the pebble layer 46 is 200 mm. Through multi-layer filtration and purification, domestic sewage is purified and ecological optimization is achieved. The wet plant layer 41 includes one or more of daylilies, irises, small palm bamboos, loosestrife, Cyperus rotundus, and pennywort. Because the well-developed root systems of wetland plants can directly absorb some nitrogen and phosphorus substances and release oxygen to provide living conditions for microorganisms, the two complement each other to form a three-dimensional stable ecological environment, which is conducive to the adsorption and dissolution of pollutants in the water and effectively purify rural domestic sewage ecologically.
[0044] Preferably, the water collecting pipe 6 is provided with a water collecting section 61, which is arranged in the pebble layer 46, the pebble particle size of the pebble layer 46 is not less than 30 mm, and a plurality of water inlet holes 611 are arranged at intervals along the water collecting section 61. For example, the diameter of the water collecting pipe is 160 mm, the interval between each water inlet hole 611 is 100 mm, and the hole diameter is 10 mm. Covering the side of the water collecting pipe 6 with pebbles with a particle size of 30 mm-50 mm, and laying a second permeable geotextile 45 on the pebbles can avoid clogging of the water inlet holes 611 and ensure smooth water flow.
[0045] In another embodiment, the water collecting pipe 6 has a water passing section 62, and the water passing section 62 passes through the planting soil layer 42 upward from the pebble layer 46, and is arranged higher than the planting soil layer 42 to form a dredging water inlet. Preferably, the dredging water inlet is provided with an openable and closable cover. When the water collecting pipe 6 needs to be dredged, the cover is opened, and water is injected from the dredging water inlet to clean the pipeline. The water collecting tank 5 can be used as a dredging outlet of the water collecting pipe 6 to prevent the water collecting pipe 6 from being blocked by silt after long-term use. In other embodiments, a valve body can be provided at the connection end between the water collecting pipe 6 and the water collecting tank 5. The valve body can select the water collecting pipe 6 to be connected to the water collecting tank 5 or to be connected to the drain pipe. When dredging is required, the water flow is selected to be discharged from the drain pipe through the valve body, thereby facilitating dredging. It is not limited to this and no specific limitation is made.
[0046] On the basis of the above-mentioned embodiments, in an optional embodiment of the utility model, a brick wall 8 is provided at the front and rear ends of the ecological purification undercurrent section, and a waterproof blanket 47 is clamped in the brick wall 8, and the soil or rocks are covered on both sides of the ditch wall of the ecological purification undercurrent section to enclose the entire ecological purification undercurrent section and adjust the shape according to the width of the plane hinterland. Specifically, the ditch wall and the bottom of the ecological purification undercurrent section are covered, wherein the ditch wall can be designed as a slope or a vertical form. In this embodiment, the ditch body is enclosed by the waterproof blanket 47, and the shape change of the undercurrent section can be adjusted according to the width or narrowness of the plane hinterland on site, so as to ensure that the ecological purification undercurrent section can flexibly adapt to the winding form of rural roads, ditches and farmland boundaries, and adjust the shape and size according to local conditions. At the same time, it is ensured that the undercurrent section can store water normally, and the microorganisms in the ecological purification undercurrent section can continue to survive and the wet plants at the top can grow luxuriantly. Preferably, a 1:3 cement mortar plaster with a thickness of 10 mm is provided on the surface of the brick wall 8, and a 1:3 dry hard cement mortar cushion layer 82 is provided at the bottom of the brick wall 8 to prevent water leakage or seepage in the ecological purification submerged flow section.
[0047] In other embodiments, the wall of the water collection bin 5 is made of prefabricated reinforced concrete. Prefabricated reinforced concrete is prefabricated in a factory or on site, and then transported to the construction site for installation, which can achieve standardized production, controllable quality, fast construction speed, flexible and simple layout, and is conducive to application in rural areas.
[0048] The above are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.
Claims
1. An ecological purification system adapted to rural landforms, characterized in that: It includes multiple ecological purification subsurface flow sections set up by utilizing the original drainage ditches, and steep slope gravity flow sections are staggered between two ecological purification subsurface flow sections with large terrain difference, so that water overflowing from the upper ecological purification subsurface flow section flows from the steep slope gravity flow section into the next ecological purification subsurface flow section; the water inlet end of each ecological purification subsurface flow section is provided with a multi-layer filler purification area, and the water outlet end of the ecological purification subsurface flow section is provided with a water collecting bin, the water inlet end is connected with the water outlet end via a water collecting pipe, domestic sewage flows in from the water inlet end, enters the water collecting pipe after being purified by multiple layers of fillers, and is merged into the water collecting bin through the water collecting pipe, wherein the water collecting pipe is foldable and retractable, so that the length and bending angle of the water collecting pipe can be adjusted according to the width of the plane hinterland and the terrain height difference.
2. The ecological purification system adapted to rural landforms according to claim 1 is characterized in that: The ecological purification subsurface flow section is provided with a plurality of branch pipes in parallel in a wide area of the plane hinterland, each of the branch pipes is connected with the water collecting pipe via a joint, and a plurality of water collecting holes are evenly distributed on the branch pipes.
3. The ecological purification system adapted to rural landforms according to claim 1 is characterized in that: The multi-layer filler includes a wetland plant layer, a planting soil layer, a first permeable geotextile, a multi-porous solid matrix layer, a second permeable geotextile, a pebble layer, a waterproof blanket, and a plain soil compaction layer, which are laid in sequence from top to bottom.
4. The ecological purification system adapted to rural landforms according to claim 3 is characterized in that: The water collecting pipe is provided with a water collecting section, the water collecting section is arranged in the pebble layer, and a plurality of water inlet holes are arranged at intervals along the water collecting section.
5. The ecological purification system adapted to rural landforms according to claim 3 or 4, characterized in that: The pebble particle size of the pebble layer is not less than 30 mm.
6. The ecological purification system adapted to rural landforms according to claim 3 is characterized in that: Brick walls are provided at the front and rear ends of the ecological purification undercurrent section, and the waterproof blanket is clamped in the brick walls and is covered with soil or rocks on both sides of the ditch wall of the ecological purification undercurrent section to enclose the entire ecological purification undercurrent section and adjust its shape according to the width of the plane hinterland.
7. The ecological purification system adapted to rural landforms according to claim 3 or 4, characterized in that: The water collecting pipe has a water passing section, which passes through the planting soil layer from the pebble layer upwards and is arranged higher than the planting soil layer to form a dredging water inlet end.
8. The ecological purification system adapted to rural landforms according to claim 1 is characterized in that: The water collecting pipe is a foldable PVC drilled corrugated pipe.
9. The ecological purification system adapted to rural landforms according to claim 1 is characterized in that: The water collecting bin is made of prefabricated reinforced concrete.
10. The ecological purification system adapted to rural landforms according to claim 3 is characterized in that: The wet plant layer includes one or more of daylilies, irises, small palm bamboos, loosestrife, pennywort, and Cyperus rotundus.