CN105464050A - Renewable filler-plant combined type ditch-revetment nitrogen and phosphorus ecological interception system - Google Patents
Renewable filler-plant combined type ditch-revetment nitrogen and phosphorus ecological interception system Download PDFInfo
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- CN105464050A CN105464050A CN201511031431.5A CN201511031431A CN105464050A CN 105464050 A CN105464050 A CN 105464050A CN 201511031431 A CN201511031431 A CN 201511031431A CN 105464050 A CN105464050 A CN 105464050A
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- ditches
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- irrigation canals
- revetment
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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Abstract
The invention discloses a renewable filler-plant combined type ditch-revetment nitrogen and phosphorus ecological interception system. The renewable filler-plant combined type ditch-revetment nitrogen and phosphorus ecological interception system comprises a ditch with the trapezoidal section. The ditch is arranged between farmland and a riverway, and the wall, adjacent to one side of the riverway, of the ditch is connected with an ecological revetment. The walls of the ditch are both paved with three-dimensional ditch plant nets, the three-dimensional ditch plant nets are paved with anti-seepage concrete blocks, and revetment plants are planted in the hollow portions of the anti-seepage concrete blocks. The bottom of the ditch is paved with anti-seepage concrete blocks and a ditch filler layer from bottom to top, and aquatic plants are planted in the hollow portions of the anti-seepage concrete blocks. The ecological revetment comprises a riverway embankment, the riverway embankment is paved with a revetment filler layer, the revetment filler layer is paved with a three-dimensional revetment plant net, and revetment plants are planted on the three-dimensional revetment plant net. The renewable filler-plant combined type ditch-revetment nitrogen and phosphorus ecological interception system has the beneficial effects of being high in treatment efficiency, wide in application range, good in landscape effect and the like and is suitable for purifying treatment of farmland sewage.
Description
Technical field
The present invention relates to a kind of water body purification system, in particular, relate to a kind of renewable filler-plant society formula Gou Qu ?bank protection nitrogen phosphorus ecological intercepting system.
Background technology
China's fertilizer application amount occupies first place in the world, but the utilization rate of chemical fertilizer is very low, the excessive use of chemical fertilizer and the unreasonable of Fertilization Structure cause fertilizer in rainfall and a large amount of loss after irrigating, and the runoff containing a large amount of nitrogen phosphorus nutrient directly enters river course or lake, defines the serious threat to body eutrophication.Research shows, TAIHU LAKE eutrophication problem and widespread pollution from the overuse of fertilizers and pesticides in rural area have direct relation.Widespread pollution from the overuse of fertilizers and pesticides in rural area has become one of primary pollution source of China's water pollution, and Control the Plan Pollution Sources has arrived instant stage.
The domestic research about pollution of area source by the eighties in 20th century, as mountain region, basin, East Lake, Wuhan City and region, farmland nitrogen and phosphorus loss, the agricultural nonpoint source pollution of Taihu Lake, Jiangsu and control way research thereof etc.At present, the pollution of area source Control Engineering that China is common, mainly comprise plant buffer strip, artificial wet land system, multi-pond system, ecological canal system etc., utilize vegetation to the absorption interception capacity of soil nutrient, realize retaining and filtering area source pollutants.In Process of Engineering Construction, combine closely with the view of surrounding, not only effectively cut down Rural Plane Source Pollution load, also can improve rural environment view to a certain extent.
Ecological canal has good catharsis to agricultural area source pollutants, is the technological means of effective control widespread pollution from the overuse of fertilizers and pesticides in rural area of applicable China's national situation and region feature.Numerous and the comparatively unification of China's farmland ditch, if utilize existing farmland ditch to build up the ditch wetland with interception function, can reduce the risk that Agricultural land loss N, P enter water body.But when heavy rain occurs, irrigation canals and ditches displacement is large, hydraulic detention time is short, the absorption interception result of ecological canal to nitrogen phosphorus will significantly decline, cause a large amount of high concentration agricultural drain directly enter river course or enter follow-up unit for treating water, cause the pollutant burden of river course or follow-up unit for treating water to increase substantially.How to ensure the concentration reducing nitrogen and phosphorus pollutants before storm runoff enters river course, become and need the urgent problem solved at present.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, there is provided a kind of integrate sewage transport, interception and renewable filler-plant society formula Gou Qu of purifying ?bank protection nitrogen phosphorus ecological intercepting system, this system makes full use of farmland, existing irrigation canals and ditches and channel revetment, solve ecological engineering to occupy cultivated land many problems, there is the features such as treatment efficiency is high, applied range, landscape effect are good.
The object of the invention is to be achieved through the following technical solutions.
Renewable filler of the present invention-plant society formula Gou Qu ?bank protection nitrogen phosphorus ecological intercepting system, comprising cross section is trapezoidal irrigation canals and ditches, and described irrigation canals and ditches are arranged between farmland and river course, and the canal wall that described irrigation canals and ditches adjoin side, river course is connected with ecological revetment; All be equipped with irrigation canals and ditches three-dimensional plant net inside the canal wall of described irrigation canals and ditches, described irrigation canals and ditches three-dimensional plant is equipped with the concrete anti-seepage building block of hollow on the net, and the hollow part of the concrete anti-seepage building block that described irrigation canals and ditches canal wall is laid is filled with filler and plants and is implanted with slope-protecting plant; Described trench bottom is equipped with concrete anti-seepage building block and the irrigation canals and ditches packing layer of hollow from the bottom to top, and the hollow part of the concrete anti-seepage building block that described trench bottom is laid is filled with filler and plants and is implanted with water plant; Described ecological revetment comprises channel revetment, described channel revetment is equipped with bank protection packing layer, and described bank protection packing layer is equipped with the bank protection three-dimensional plant net be connected with irrigation canals and ditches three-dimensional plant net, described bank protection three-dimensional plant is planted on the net and is implanted with slope-protecting plant.
The Qu Bi upper end of described irrigation canals and ditches Adjacent Farms side is provided with irrigation canals and ditches gallery and bears down on one.
Described irrigation canals and ditches adjoin the canal wall height of canal wall height lower than side, adjacent farmland of side, river course, and described irrigation canals and ditches adjoin that the Qu Bi upper end of side, river course is equally spaced is provided with boss.
Described concrete anti-seepage building block is made up of hollow hexagonal revetment brick, and two sides of described concrete anti-seepage building block are respectively arranged with the projection and groove that connect to each other for each concrete anti-seepage building block.
Described irrigation canals and ditches packing layer and bank protection packing layer are formed by rubble or cobble.
Compared with prior art, the beneficial effect that technical scheme of the present invention is brought is:
(1) the present invention does not occupy cultivated land, and irrigation canals and ditches are arranged between farmland and river course, and build up according to existing irrigation canals and ditches and Channel slope transformation, construction costs is low, it is simple and easy to operate, and is suitable for large scale application;
(2) in the present invention, concrete anti-seepage building block by the connection close-packed arrays of projection and groove in irrigation canals and ditches perisporium and bottom, effectively prevent seepage, hollow part plantation slope-protecting plant or water plant, intensive plant stem-leaf and root system can effectively filter, the suspension retained in agricultural run-off, and absorb the nutrients such as the nitrogen phosphorus tackled;
(3) in the present invention, the water plant planted in the concrete anti-seepage building block of trench bottom selects emergent aquactic plant and submerged plant, can by the oxygen transport in air to root, again through the diffusion of plant root, aerobic zone, aerobic area and anaerobic zone is there is successively in plant root whisker surrounding environment, be conducive to nitrated, anti-nitration reaction and microorganism to the excess accumulation effect of phosphorus, reach denitrogenate, the effect of the pollutant such as phosphorus;
(4) in the present invention, trench bottom is equipped with irrigation canals and ditches packing layer, channel revetment is equipped with bank protection packing layer, described irrigation canals and ditches packing layer and bank protection packing layer are formed by the filler such as cobble or rubble, be beneficial to biomembranous formation and growth, form plant-microorganism system, improve water purification ability;
(5) in the present invention, the nitrogen phosphorus that in irrigation canals and ditches packing layer, filler adsorbs reduces gradually under the absorption of plant and the effect of bacterium, environment Drought-wet change residing for filler, aerobic anaerobism hockets, be conducive to the pollutant such as organic matter in filler to be decomposed absorption, thus reach the effect of filler regeneration, without the need to changing filler;
(6) in the present invention, ecological revetment is laid bank protection packing layer and bank protection three-dimensional plant net, bank protection three-dimensional plant is planted on the net and is implanted with slope-protecting plant, and bank protection three-dimensional plant is held on the net and is connected with irrigation canals and ditches three-dimensional plant net, utilize the anchorage effect of slope-protecting plant root system and bank protection three-dimensional plant net to reach protective slope structure to stablize, bank protection packing layer and slope-protecting plant can play interception and absorption to pollutants such as the nitrogen phosphorus in draining;
(7) in the present invention, irrigation canals and ditches are equally spaced near the Qu Bi upper end of side, river course arranges boss, build into Great Wall shape, and be connected with ecological revetment, the end of irrigation canals and ditches can be connected to river course or downstream wastewater processing unit, and irrigation canals and ditches end is provided with emptying gate, under normal circumstances, agricultural run-off is after irrigation canals and ditches packing layer and aquatic plant purification, directly can be disposed to river course or the downstream wastewater processing unit of the connection of irrigation canals and ditches end, but when irrigation canals and ditches flow is comparatively large or downstream wastewater processing unit is received limited in one's ability, irrigation canals and ditches end emptying gate is closed, will from the short outflow of Great Wall shape furrow bank by the agricultural drain of irrigation canals and ditches, be evenly distributed on the ecological revetment of connection, through the absorption of slope-protecting plant and rubble, river course is entered after interception, various pollutants in effective removal agricultural drain, when avoiding heavy rain, a large amount of agricultural drain is unprocessed directly enters river course.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
Fig. 2 is A-A view in Fig. 1.
Fig. 3 is the structural representation of concrete anti-seepage building block in the present invention.
Reference numeral: 2 irrigation canals and ditches three-dimensional plant net 3 irrigation canals and ditches packing layer 4 concrete anti-seepage building block 5 water plant 6 irrigation canals and ditches gallerys bear down on one 8 bank protection packing layer 9 slope-protecting plant 10 bank protection three-dimensional plant nets
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1 to Figure 3, renewable filler of the present invention-plant society formula Gou Qu ?bank protection nitrogen phosphorus ecological intercepting system, comprising cross section is trapezoidal irrigation canals and ditches, described irrigation canals and ditches are arranged between farmland and river course, the canal wall gradient of closing on farmland and river course of described irrigation canals and ditches all can be about 60 °, canal body is about 0.8m deeply, the Qu Bi upper end of described irrigation canals and ditches Adjacent Farms side is provided with the irrigation canals and ditches gallery be made up of pea gravel concreten and bears down on one 6, the canal wall that described irrigation canals and ditches adjoin side, river course is connected with ecological revetment, described irrigation canals and ditches adjoin the canal wall height of canal wall height lower than side, adjacent farmland of side, river course, described irrigation canals and ditches adjoin that the Qu Bi upper end of side, river course is equally spaced is provided with boss, a 20cm can be built long every 20cm, the rectangular boss that 10cm is wide, form the canal wall of Great Wall shape.
Irrigation canals and ditches three-dimensional plant net 2 is all equipped with inside the canal wall of described irrigation canals and ditches, described irrigation canals and ditches three-dimensional plant net 2 is all equipped with the concrete anti-seepage building block 4 of hollow with trench bottom, the effective antiseepage of irrigation canals and ditches perisporium and bottom can be made, described concrete anti-seepage building block 4 can be made up of hollow hexagonal revetment brick, and two sides of described concrete anti-seepage building block 4 can be respectively arranged with the projection and groove that connect to each other for each concrete anti-seepage building block.Concrete anti-seepage building block 4 upper strata of described trench bottom is equipped with irrigation canals and ditches packing layer 3, described irrigation canals and ditches packing layer 3 can be made up of the filler such as rubble or cobble, be beneficial to biomembranous formation and growth, certain filtration, suction-operated is had to pollutant, for microbial adhesion provides carrier, be easy to microorganism membrane, form Zhi Wu ?microflora, more efficiently can tackle and the nutrition pollutant such as the suspension purified in agricultural drain and nitrogen phosphorus, effectively improve the water purification ability of ecological canal.Short slope-protecting plant 9 can be planted by the filler such as filling soil in the hollow part of the concrete anti-seepage building block 4 that described irrigation canals and ditches canal wall is laid, planting aquatic plants 5 can be carried out by the filler such as filling soil in the hollow part of the concrete anti-seepage building block 4 that described trench bottom is laid, described water plant can select emergent aquactic plant and submerged plant, described water plant 5 can select biomass large, the perennial water plant wild rice stem in this locality that demanding volume of nitrogen and phosphorus is high or yellow flag etc., the particle can effectively tackled in agricultural run-off also absorbs the nutriments such as the nitrogen phosphorus tackled, and be built with around plant root whisker be beneficial to nitrated, anti-nitration reaction and microorganism are to the aerobic zone of the excess accumulation of phosphorus, aerobic area and anaerobic zone, reach removal nitrogen, the effect of the pollutants such as phosphorus.The nitrogen phosphorus adsorbed in described irrigation canals and ditches packing layer 3 reduces gradually under the absorption of plant and the effect of bacterium, environment Drought-wet change residing for filler, aerobic anaerobism hockets, and is conducive to the pollutant such as organic matter in filler and is decomposed absorption, thus reach the effect of filler regeneration, without the need to changing filler.
Described ecological revetment has certain gradient, can according to actual conditions, and effluent road revetment modification forms, after the subsoil compacting of described channel revetment, lay bank protection packing layer 8, described bank protection packing layer 8 can be set to 5-10cm, and described bank protection packing layer 8 can be made up of rubble or cobble etc.Described bank protection packing layer 8 is equipped with bank protection three-dimensional plant net 10, the irrigation canals and ditches three-dimensional plant net 2 that the upper end of described bank protection three-dimensional plant net 10 can be laid with canal wall is connected, described bank protection three-dimensional plant net 10 is planted and is implanted with slope-protecting plant 9, utilize the anchorage effect of slope-protecting plant 9 root system and bank protection three-dimensional plant net 10 to reach protective slope structure to stablize, described bank protection three-dimensional plant net 10 can adopt turf transplanting mode plant bermudagrass grass, to replay winter rye grass, ensure that Various Seasonal bank protection has vegetation straw cord to cover, rubble and vegetation straw cord can play interception to pollutants such as the nitrogen phosphorus in draining and absorption.According to the concrete terrain of the existing irrigation canals and ditches in farmland, this cleaning system form of structure is concatenated, enables water body obtain multi-stage filtration purifying.
The end of described irrigation canals and ditches can be connected to river course or downstream wastewater processing unit, and the end of irrigation canals and ditches arranges controlled emptying gate, when field runoff volume is comparatively large or contaminants in drainage concentration is higher or downstream wastewater processing unit is received limited in one's ability, ecological canal disposal ability can not meet, now close the emptying gate of irrigation canals and ditches end, when irrigation canals and ditches middle water level rises to canal wall short place, agricultural run-off will from the short outflow of Great Wall shape canal wall, be evenly distributed on the ecological revetment of and then irrigation canals and ditches side, ecology through ecological revetment filler and plant is adsorbed, river course is entered after absorbing interception purification.
Although be described function of the present invention and the course of work by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned concrete function and the course of work; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection of the present invention.
Claims (5)
1. renewable filler-plant society formula ditch canal ?bank protection nitrogen phosphorus ecological intercepting system, comprising cross section is trapezoidal irrigation canals and ditches, it is characterized in that, described irrigation canals and ditches are arranged between farmland and river course, and the canal wall that described irrigation canals and ditches adjoin side, river course is connected with ecological revetment; All be equipped with irrigation canals and ditches three-dimensional plant net inside the canal wall of described irrigation canals and ditches, described irrigation canals and ditches three-dimensional plant is equipped with the concrete anti-seepage building block of hollow on the net, and the hollow part of the concrete anti-seepage building block that described irrigation canals and ditches canal wall is laid is filled with filler and plants and is implanted with slope-protecting plant; Described trench bottom is equipped with concrete anti-seepage building block and the irrigation canals and ditches packing layer of hollow from the bottom to top, and the hollow part of the concrete anti-seepage building block that described trench bottom is laid is filled with filler and plants and is implanted with water plant; Described ecological revetment comprises channel revetment, described channel revetment is equipped with bank protection packing layer, and described bank protection packing layer is equipped with the bank protection three-dimensional plant net be connected with irrigation canals and ditches three-dimensional plant net, described bank protection three-dimensional plant is planted on the net and is implanted with slope-protecting plant.
2. renewable filler according to claim 1-plant society formula ditch canal ?bank protection nitrogen phosphorus ecological intercepting system, it is characterized in that, the Qu Bi upper end of described irrigation canals and ditches Adjacent Farms side is provided with irrigation canals and ditches gallery and bears down on one.
3. renewable filler according to claim 1-plant society formula Gou Qu ?bank protection nitrogen phosphorus ecological intercepting system, it is characterized in that, described irrigation canals and ditches adjoin the canal wall height of canal wall height lower than side, adjacent farmland of side, river course, and described irrigation canals and ditches adjoin that the Qu Bi upper end of side, river course is equally spaced is provided with boss.
4. renewable filler according to claim 1-plant society formula Gou Qu ?bank protection nitrogen phosphorus ecological intercepting system, it is characterized in that, described concrete anti-seepage building block is made up of hollow hexagonal revetment brick, and two sides of described concrete anti-seepage building block are respectively arranged with the projection and groove that connect to each other for each concrete anti-seepage building block.
5. renewable filler according to claim 1-plant society formula irrigation canals and ditches-bank protection nitrogen phosphorus ecological intercepting system, is characterized in that, described irrigation canals and ditches packing layer and bank protection packing layer are formed by rubble or cobble.
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| CN201511031431.5A CN105464050B (en) | 2015-12-30 | 2015-12-30 | Renewable filler-plant society formula irrigation canals and ditches-bank protection nitrogen phosphorus ecological intercepting system |
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| CN201511031431.5A CN105464050B (en) | 2015-12-30 | 2015-12-30 | Renewable filler-plant society formula irrigation canals and ditches-bank protection nitrogen phosphorus ecological intercepting system |
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Cited By (8)
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| CN106865891A (en) * | 2017-03-06 | 2017-06-20 | 常州大学 | A kind of rice field recovery of nitrogen and phosphorus and pollution of area source control system |
| CN109469078A (en) * | 2018-12-30 | 2019-03-15 | 内蒙古蒙草生态环境（集团）股份有限公司 | A kind of flexible multiple green gully detention method |
| CN109553190A (en) * | 2018-11-20 | 2019-04-02 | 云南省农业科学院农业环境资源研究所 | A method of the ecological ditch pool, which is embedded in, using buffer strip intercepts farmland nitrogen phosphorus runoff |
| CN109874639A (en) * | 2019-03-21 | 2019-06-14 | 金陵科技学院 | A kind of farmland sand irrigation canals and ditches soil and water conservation works system |
| CN111535248A (en) * | 2020-06-08 | 2020-08-14 | 西南林业大学 | Biomass-based natural river bank imitating hanging plate |
| CN112062280A (en) * | 2020-06-28 | 2020-12-11 | 桂林理工大学 | Combined trapezoidal ecological ditch |
| CN112875868A (en) * | 2021-03-02 | 2021-06-01 | 安徽农业大学 | Method for solving agricultural non-point source pollution |
| CN113582448A (en) * | 2021-07-29 | 2021-11-02 | 长三角(义乌)生态环境研究中心 | Processing system for reducing farmland non-point source pollution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106865891A (en) * | 2017-03-06 | 2017-06-20 | 常州大学 | A kind of rice field recovery of nitrogen and phosphorus and pollution of area source control system |
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| CN111535248A (en) * | 2020-06-08 | 2020-08-14 | 西南林业大学 | Biomass-based natural river bank imitating hanging plate |
| CN112062280A (en) * | 2020-06-28 | 2020-12-11 | 桂林理工大学 | Combined trapezoidal ecological ditch |
| CN112875868A (en) * | 2021-03-02 | 2021-06-01 | 安徽农业大学 | Method for solving agricultural non-point source pollution |
| CN113582448A (en) * | 2021-07-29 | 2021-11-02 | 长三角(义乌)生态环境研究中心 | Processing system for reducing farmland non-point source pollution |
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