CN211035614U - Farmland non-point source sewage interception and purification ditch with anti-scouring function and ecological purification function - Google Patents
Farmland non-point source sewage interception and purification ditch with anti-scouring function and ecological purification function Download PDFInfo
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- CN211035614U CN211035614U CN201921902630.2U CN201921902630U CN211035614U CN 211035614 U CN211035614 U CN 211035614U CN 201921902630 U CN201921902630 U CN 201921902630U CN 211035614 U CN211035614 U CN 211035614U
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Abstract
Dirty purification irrigation canals and ditches are cut to farmland non-point source with scour prevention function and ecological purification performance includes: ecological bank protection, artifical intensive purification filler mixed matrix and artifical drop, ecological bank protection and artifical intensive purification filler mixed matrix both sides are connected, and the ecological bank protection inboard is located to artifical drop, and artifical drop is located artifical intensive purification filler mixed matrix below. Wherein, the artificial reinforced purified filler mixed matrix comprises: tamping plain soil, anti-seepage geotextile, gravel cushion layer, gravel mixing functional filler cushion layer, planting soil and plants. The utility model discloses compare with the conventional art, through holding back ditch section structural style and plane arrangement to the tradition and moving towards two directions and reform transform for the tradition holds back the ditch and has possessed the scour prevention function, has increased the water conservancy dwell time of low contaminated water in the irrigation canals and ditches simultaneously, and utilizes the absorption and the biodegradable ability of plant, microorganism to realize ecologically.
Description
Technical Field
The utility model relates to an ecological irrigation canals and ditches, concretely relates to dirty purification irrigation canals and ditches are cut to farmland non-point source with scour prevention function and ecological purification performance.
Background
The tradition is held back the ditch and is mainly concrete irrigation canals and ditches with soil property, but these two kinds of tradition farmland escape canals and ditches do not consider more that the pollutant is along the journey to cut down and ecological environment improves, and all have certain not enough structurally.
The water flow in the concrete ditch is fast, the silt and sand in the drainage water are difficult to settle completely, meanwhile, the ditch is lack of plants and microorganisms, N, P nutritive salt in the drainage water cannot be absorbed and degraded, and the ecological performance is poor. Soil ditches are easy to generate water and soil loss and cluster weeds, flood control safety is poor, and the phenomenon of swampiness is serious.
Under the current situation that the requirement for environmental protection is increasingly raised, the construction of sewage intercepting ditches needs to be developed towards the direction of ecological purification, so that the defects of the hard concrete ditches in pollutant degradation and ecological functions are made up, and meanwhile, the defect of the soil quality ditches in anti-scouring capacity is also considered. In addition, considering the rainfall conditions and the geological conditions in different areas, the ecological purification ditch which can prevent scouring and degrade pollutants is one of the inevitable choices of the treatment measures of the surface sources of the lake.
In order to solve the above problems, we have made a series of improvements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dirty purification irrigation canals and ditches is cut to farmland non-point source with scour prevention function and ecological purification performance to overcome the above-mentioned shortcoming and not enough that prior art exists.
Dirty purification irrigation canals and ditches are cut to farmland non-point source with scour prevention function and ecological purification performance includes: the artificial falling water is arranged on the inner side of the ecological slope protection, and the artificial falling water is arranged below the artificial reinforced purification filler mixed matrix;
wherein, the artificial reinforced purifying filler mixed matrix comprises: the soil-planting and soil-filling combined machine comprises tamped plain soil, anti-seepage geotextile, a broken stone cushion layer, a gravel mixed functional filling cushion layer, planting soil and plants, wherein the upper end of the tamped plain soil is connected with the anti-seepage geotextile, the upper end of the anti-seepage geotextile is connected with the broken stone cushion layer, the upper end of the broken stone cushion layer is connected with the gravel mixed functional filling cushion layer, the upper end of the gravel mixed functional filling cushion layer is connected with the planting soil, and the plants are connected with the upper end of the planting soil.
Further, ecological bank protection includes: the backfilling soil is connected with one side of the rubble concrete, the natural stone blocks are arranged on the rubble concrete, and the backfilling rubble concrete is connected with the other side of the rubble concrete.
Furthermore, the structural form of the artificial reinforced purifying filler mixed matrix is trapezoidal.
Further, the ecological slope protection plants turf or plants hygrophyte.
The utility model has the advantages that:
the utility model discloses compare with the conventional art, through holding back ditch section structural style and plane arrangement to the tradition and moving towards two directions and reform transform for the tradition holds back the ditch and has possessed the scour prevention function, has increased the water conservancy dwell time of low contaminated water in the irrigation canals and ditches simultaneously, and utilizes the absorption and the biodegradable ability of plant, microorganism to realize ecologically.
Description of the drawings:
fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is the utility model discloses an ecological bank protection sectional view.
Reference numerals:
The artificial reinforced purification filler mixed matrix 200, the rammed plain soil 210, the impermeable geotextile 220, the gravel cushion layer 230, the gravel mixed functional filler cushion layer 240, the planting soil 250, the plants 260 and the artificial water drop 300.
Detailed Description
The present invention will be further described with reference to the following examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
Fig. 1 is a cross-sectional view of the present invention. Fig. 2 is the utility model discloses an ecological bank protection sectional view.
As shown in fig. 1 and 2, the non-point source pollution intercepting and purifying ditch for farmland with anti-scouring function and ecological purifying function comprises: ecological bank protection 100, artifical intensive purification filler mixed matrix 200 and artifical drop 300, ecological bank protection 100 is connected with artifical intensive purification filler mixed matrix 200 both sides, and ecological bank protection 100 inboard is located to artifical drop 300, and artifical intensive purification filler mixed matrix 200 below is located to artifical drop 300.
Wherein, the artificial reinforced purified filler mixed matrix 200 comprises: the gravel-mixed functional filling material comprises tamped plain soil 210, impermeable geotextile 220, a gravel cushion layer 230, a gravel-mixed functional filling cushion layer 240, planting soil 250 and plants 260, wherein the upper end of the tamped plain soil 210 is connected with the impermeable geotextile 220, the upper end of the impermeable geotextile 220 is connected with the gravel cushion layer 230, the upper end of the gravel cushion layer 230 is connected with the gravel-mixed functional filling cushion layer 240, the upper end of the gravel-mixed functional filling cushion layer 240 is connected with the planting soil 250, and the plants 260 are connected with the upper end of the planting soil 250.
The structure of the artificial reinforced purified filler mixed matrix 200 is trapezoidal.
The ecological slope protection (100) is used for planting turf or planting hygrophytes. Ecological factors such as slope protection habitat, plant population, biological corridor and the like are utilized to remove and purify organic matters, N, P and other nutrient substances in water, and ecological friendly transition from land area to water area is created.
The utility model aims to solve the technical problem that a farmland non-point source that has scour prevention function and ecological purification performance who adopts ecological bank protection, artifical intensive purification filler to mix matrix and artifical drop to constitute cuts dirty purification irrigation canals and ditches is provided, overcomes concrete ditch rivers speed fast, water conservancy dwell time is short, do not have ecological purification performance and soil property irrigation canals and ditches and do not have the shortcoming of scour prevention function, easy soil erosion loss.
Research is carried out in two directions aiming at the section structure form and the plane arrangement direction of the traditional interception ditch, the section form and the plane arrangement form of the interception ditch suitable for the environmental lake surface source pollution interception are selected according to local conditions, initial rainwater surface runoff is collected to the maximum extent, surface source pollution is intercepted to the maximum extent, initial rainwater is purified, water and soil loss caused by water flow scouring of the ditch is reduced to the maximum extent, and the interception ecological ditch which is different from the traditional ecological ditch and used for collecting, intercepting, purifying and conveying the surface source pollution is formed.
The technical proposal of the utility model is composed of three parts of ecological slope protection, artificial strengthening and purifying filler mixed matrix and artificial water drop.
Ecological slope protection: abandons the traditional hard revetment which only meets the requirements of closure and takes the ecological revetment which can realize the material and energy exchange of the water and land ecosystem as the idea to carry out ecological construction on the revetment of the retaining trench. Considering ecological factors such as a slope protection habitat, a plant population, a biological corridor and the like from the perspective of an ecological system to remove organic matters, N, P and other nutrient substances in water, mainly because the roots of planted plants transmit generated oxygen into the water, the oxygen is diffused into surrounding anoxic bottom mud, the oxygen and root base secretion (a microorganism C source) promote bacterial growth, and the absorption and transformation of the nutrient substances in the water body are promoted; the aquatic plants can directly absorb organic matters, N, P and other nutrient substances from the water body and the particles intercepted by the aquatic plants and convert the nutrient substances into substances required by the aquatic plants; meanwhile, the aquatic plants planted on the revetment can play a role in slowing down water flow, prolonging the retention time of water power, and promoting the absorption of organic matters, N, P and other nutrient substances.
Artificially reinforcing and purifying a filler mixed matrix: the traditional soil interception ditch and concrete interception ditch mainly adsorb pollutants in water by means of sediments at the ditch bottom and slope protection soil (or plates), and when the adsorption reaches saturation, the removal rate of the ditch on the pollutants is reduced. Gravel and rubble among the ecological purification irrigation canals and ditches mainly used cut down the effect obviously to the nitrogen in the initial stage rainwater runoff, trapezoidal ecological purification irrigation canals and ditches can increase the flood discharge ability, in order to ensure the water delivery ability of ecological purification irrigation canals and ditches, rainwater accessible ecological purification irrigation canals and ditches discharge smoothly when guaranteeing the torrential rain, the effective degree of depth of ecological purification irrigation canals and ditches should be greater than the maximum effective depth of water, nevertheless should not exceed 0.6m, in order to reduce to erode, the end wide region of ecological purification irrigation canals and ditches is at 0.15 ~.
The artificial substrate is added with the mixed functional material, the corresponding functional material is selected according to the actual requirements of nitrogen and phosphorus removal of the polluted water, the mixed functional material has large specific surface area, pore volume and porosity, when the mixed functional material is thrown into an ecological ditch, pollutants such as organic matters, N, P and the like in water can penetrate into pores of the material along with water flow, so that the material is fully contacted with the organic matters, N, P and the like in the water to react, and the removal rate of the pollutants is increased. Secondly, the pores of the material are grown with microorganisms, and the aerobic microorganisms utilize DO of the material slowly released in the water to grow and reproduce, so that organic pollutants in the water are consumed in the process, and the adsorption and ion exchange effects of the material on the pollutants are added, so that the removal rate of pollutants can be increased. On the other hand, the addition of the artificial matrix strengthening material can prolong the hydraulic retention time of water flow in the ecological ditch, slow down the water flow and be more beneficial to the removal of pollutants.
Compared with the traditional ditch, the ecological purification ditch has the advantages that the ecological system is complete, the hydraulic condition is good, the ecological ditch can adjust the regional hydrological situation, and pollutants in the drainage water of the farmland can be intercepted and purified through the effects of bottom mud and soil adsorption, plant interception and absorption, microbial degradation and the like in the drainage ditch. Meanwhile, the ecological ditch is full of plants and can be used as a place for the migration and inhabitation of animals and plants.
300, manual water dropping: the method is an important engineering measure for preventing water from scouring the downstream, so that water flow of an upstream ditch freely falls into a downstream ditch, the bottom of a water-falling ditch is stepped and is generally arranged in a place with a steep slope surface and easy scouring, and the method has certain ecological landscape value while reducing the hydraulic scouring. The method can also play a role in increasing the residence time of the water body in the water environment treatment with less water quantity, and provides sufficient time for the adsorption and filtration of harmful substances by aquatic plants and microorganisms in the area.
Under the condition of tense land and large terrain altitude difference, the artificial water drop 300 needs to analyze terrain conditions for arranging water drop, and focuses on the change of terrain altitude, and single-stage or multi-stage water drop is arranged. The water quantity is large, the fall is single, and single-stage drop can be selected; the water quantity is small, the terrain has step-shaped fall, and multistage drop can be selected. The drop water can slow down the flow velocity, and the direct scouring of the residual water and the surface runoff on the ditch slope protection and the bottom is reduced. Meanwhile, a small-area fixed water area can be formed in a small range of the ecological purification ditch, natural stones are arranged in a row in the water falling process, natural river stream characteristics are built, a certain landscape effect is achieved, a inhabitation space is provided for aquatic animals, and natural recovery and healthy development of ecological diversity are facilitated. At the moment, attention must be paid to the side slope anti-scouring problem of the ecological purification ditch, and rubble concrete is backfilled on the side slope at the downstream of the water drop.
In the embodiment, firstly, the ecological slope protection 100 is excavated, and the bottom layer is tamped with plain soil 210 (the tamping degree is 90%); secondly, paving an artificial reinforced purification filler mixed matrix 200 at the bottom of the trench, and paving an impermeable geotextile 220 (two cloths and one film), a gravel cushion layer 230 (the thickness is 100mm, the particle size is 10cm) and a gravel mixed functional filler cushion layer 240 (the thickness is 200mm, the particle size is 10cm) on the tamped plain soil 210 from bottom to top in sequence; and finally, paving planting soil 250mm (250mm), and selecting native plants and plant varieties with better landscape ecological performance according to regional characteristics for planting. The plant 260 is maintained as necessary to form a complete ecological slope protection 100+ artificial reinforced purification filler mixed matrix 200 structure; in addition, the artificial water drop 300 is constructed in places with steep slopes and easy washout and places with landscape requirements, the terrain conditions are analyzed, and single-stage or multi-stage water drop is arranged with the emphasis on the height change of the terrain. The bottom of the water drop ditch is stepped, rubble concrete 140 is backfilled at the downstream of the ditch to prevent scouring, the concrete pouring adopts layered pouring according to the design size, and rubble is manually thrown in the concrete pouring and vibrating processes to try to be uniform. Then plastering and maintaining. 7.5 of mortar, 120 Kg of single rubble concrete, the thickness of the middle part of the concrete is not less than 100mm, the concrete C20 has 20 percent of rubble doping amount and 30MPa of strength. Natural stone blocks 130 (a single natural stone block with the weight of 35Kg and the thickness of the middle part of 350mm) are arranged in series in the small water surface formed by the water drop.
The above description has been made of the embodiments of the present invention, but the present invention is not limited thereto, and various changes may be made without departing from the spirit of the present invention.
Claims (4)
1. Dirty purification irrigation canals and ditches are cut to farmland non-point source with scour prevention function and ecological purification performance, its characterized in that includes: the artificial water drop system comprises an ecological slope protection (100), an artificial reinforced purification filler mixed matrix (200) and artificial water drops (300), wherein the ecological slope protection (100) is connected with two sides of the artificial reinforced purification filler mixed matrix (200), the artificial water drops (300) are arranged on the inner side of the ecological slope protection (100), and the artificial water drops (300) are arranged below the artificial reinforced purification filler mixed matrix (200);
wherein the artificially strengthened purified filler mixed matrix (200) comprises: the soil planting method comprises the following steps of tamping plain soil (210), anti-seepage geotextile (220), a gravel cushion layer (230), a gravel mixed functional filler cushion layer (240), planting soil (250) and plants (260), wherein the upper end of the tamping plain soil (210) is connected with the anti-seepage geotextile (220), the upper end of the anti-seepage geotextile (220) is connected with the gravel cushion layer (230), the upper end of the gravel cushion layer (230) is connected with the gravel mixed functional filler cushion layer (240), the upper end of the gravel mixed functional filler cushion layer (240) is connected with the planting soil (250), and the plants (260) are connected with the upper end of the planting soil (250).
2. The non-point source pollution-intercepting purification ditch with the anti-scouring function and the ecological purification function for the farmland as claimed in claim 1, which is characterized in that: the ecological slope protection (100) comprises: the backfilled soil comprises backfilled soil (110), rubble concrete (120), natural stones (130) and backfilled rubble concrete (140), wherein the backfilled soil (110) is connected with one side of the rubble concrete (120), the natural stones (130) are arranged on the rubble concrete (120), and the backfilled rubble concrete (140) is connected with the other side of the rubble concrete (120).
3. The non-point source pollution-intercepting purification ditch with the anti-scouring function and the ecological purification function for the farmland as claimed in claim 1, which is characterized in that: the structural form of the artificial reinforced purified filler mixed matrix (200) is trapezoidal.
4. The non-point source pollution-intercepting purification ditch with the anti-scouring function and the ecological purification function for the farmland as claimed in claim 1, which is characterized in that: the ecological slope protection (100) is used for planting turf or planting hygrophytes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921902630.2U CN211035614U (en) | 2019-11-06 | 2019-11-06 | Farmland non-point source sewage interception and purification ditch with anti-scouring function and ecological purification function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921902630.2U CN211035614U (en) | 2019-11-06 | 2019-11-06 | Farmland non-point source sewage interception and purification ditch with anti-scouring function and ecological purification function |
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| Publication Number | Publication Date |
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| CN211035614U true CN211035614U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921902630.2U Active CN211035614U (en) | 2019-11-06 | 2019-11-06 | Farmland non-point source sewage interception and purification ditch with anti-scouring function and ecological purification function |
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| CN (1) | CN211035614U (en) |
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