CN109553198A - The synchronous interception conversion pool and its method for realizing denitrogenation dephosphorizing - Google Patents
The synchronous interception conversion pool and its method for realizing denitrogenation dephosphorizing Download PDFInfo
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- CN109553198A CN109553198A CN201811468824.6A CN201811468824A CN109553198A CN 109553198 A CN109553198 A CN 109553198A CN 201811468824 A CN201811468824 A CN 201811468824A CN 109553198 A CN109553198 A CN 109553198A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a kind of synchronous interception conversion pools and its method for realizing denitrogenation dephosphorizing, belong to the technical fields such as agricultural non-point source pollution control and water environment treatment.A kind of synchronous interception conversion pool for realizing denitrogenation dephosphorizing is connected with irrigation canals and ditches, including water catchment area, absorption Engagement Area and water storage drainage area.Wherein water catchment area adjusts stream wall and ecological green belt to form by buffering, can not only slow down water velocity, retention paddy field drainage sludge, reduce nutrient loss, also have good landscape effect.It adsorbs Engagement Area and charcoal based filler wall is set, the nitrogen phosphorus in consumption rice field water runoff is adsorbed by suction-operated, nutrient discovery effect.The present invention can be spaced setting in the trench as needed, can also be only used for drainage ditch end as tail water conditioning tank.Flexibly, the purpose for realizing unpowered, Non-energy-consumption, facilitating management is a kind of new process for meeting the processing of China, the network of rivers, villages and small towns irrigation canals and ditches synchronous denitrification dephosphorizing for the configuration of the present invention is simple, with low investment, setting.
Description
Technical field
The present invention relates to a kind of synchronous interception conversion pools for realizing denitrogenation dephosphorizing, belong to agricultural non-point source pollution control and water ring
The technical fields such as border improvement.
Background technique
The pollution problem due to caused by the nitrogen phosphorus of Agricultural land loss can not be ignored in pollution of area source, and peasant largely uses inorganization
Fertilizer, but the utilization rate of crop absorbed nitrogen phosphorus lowly causes farmland nitrogen and phosphorus pollution serious.As population in the world increases, people are to food
It is growing day by day with the demand of fiber, the limited investment for driving the producer to increase more inorganic fertilizers of ploughing, however due to making
Object absorption rate is low, so that agricultural land soil is rich in high concentration N-P, especially nitrogen phosphorus is in high concentration in paddy field area rice field water
Under the conditions of, under the conditions of artificial drainage and storm runoff, lead to a large amount of nitrogen and phosphorus loss, if the agricultural drain of rich Nitrogen-and Phosphorus-containing is direct
Into the receiving water body adjoined with farmland, the potential pollution risk of the receiving water body will be improved.
Therefore, the resistance control of many scholar's research and inquirement agriculture drainage ditch or regulating and controlling effect.Farmland ditch is agriculture ground
Table runoff imports the necessary channel of the natural water bodies such as river, lake, thus plays to the reduction of agricultural non-point source pollution particularly important
Effect.But since irrigation canals and ditches retain, purification nitrogen phosphorus ability is limited, the effect of irrigation canals and ditches retention purification especially under larger flow conditions
Fruit is worse, so being very necessary by building interception conversion pool in irrigation canals and ditches appropriate location.Paddy field drainage flows through interception conversion
Pond can not only retain paddy field drainage sludge, reduce nitrogen phosphorus in nutrient loss absorption conversion water, also have good landscape effect.
Summary of the invention
The present invention be directed to the low technical problems of existing farmland ditch water resistant erosion difference and retention purification nitrogen phosphorus ability, mention
For a kind of pool process can be converted according to the synchronous interception for realizing denitrogenation dephosphorizing of farmland actual conditions flexible setting.
Specific technical solution of the present invention is as follows:
A kind of synchronous interception conversion pool for realizing denitrogenation dephosphorizing, the pond body of the interception conversion pool, which is equipped with, is higher than pool bottom
Inlet and outlet, water catchment area, absorption Engagement Area and water storage drainage area are sequentially divided into inside pond body along water (flow) direction；Institute
It is equipped with the charcoal based filler wall across pond body section in the absorption Engagement Area stated, is filled out between water catchment area and water storage drainage area by charcoal base
Material wall barrier is not connected to directly；Be equipped with buffering in the water catchment area and adjust stream wall and ecological green belt, buffering adjust stream wall, ecology every
Bottom from band and charcoal based filler wall is supported in pool bottom；
The buffering tune stream wall and water (flow) direction is vertically arranged and offers several mistakes on pond body section, wall
Discharge orifice, and the distribution density of flowing hole on the wall is gradually reduced from top to bottom；
The ecological green belt is set to buffering and adjusts between stream wall and absorption Engagement Area, including several are heavy for planting
The plant biological bag of water plant and/or emergent aquactic plant；
In the absorption Engagement Area, the shell of charcoal based filler wall uses porous framework, porous framework inner hollow and outer
Wall is permeable, in inner cavity in upstream face, go out the water surface and bottom and be equipped with spongy layer respectively；It is filled in cavity between spongy layer
Two layers of different filler, middle and lower part are filter layer, and top is charcoal base adsorption stuffing layer.
Preferably, the inlet and outlet for intercepting conversion pool are separately connected externally drained irrigation canals and ditches, and gutter
The canal bottom of canal is higher than pool bottom.
Preferably, the interception conversion pool pool capacity size is 1.5~3m3, and pool side edge and bottom cement solidification.
Preferably, the plant biological bag uses the sack made of needle punched non-woven fabrics, bag interior loads plant growth
Matrix.
Preferably, the plant biological bag volume is 0.003~0.005m3, highly it is no more than canal bottom.
Preferably, the charcoal based filler wall thickness is 40~60cm, top is higher than the externally drained irrigation canals and ditches
Top.
Preferably, the buffering tune stream wall thickness is 20~30cm, it is high that overhead height is located at externally drained irrigation canals and ditches
2/3rds positions of degree.
Preferably, the charcoal base adsorption stuffing layer by 3~5mm of partial size 5~10mm of rice hull carbon and/or partial size bamboo
Charcoal composition.
Preferably, the filter layer is the graded gravel of 3~5mm of partial size.
Interception conversion is carried out to agricultural drain using above-mentioned interception conversion pool another object of the present invention is to provide a kind of
Method, its step are as follows:
1) it is excavated in the centre of agriculture drainage ditch or terminal position and intercepts conversion pool, and by submerged plant and very water plant
Species are planted on plant biological bag；
2) it after collecting agricultural drain by irrigation canals and ditches confluence, inputs and is intercepted in conversion pool from water inlet；
3) adjust stream wall to carry out energy dissipating reduction of speed to water flow using buffering, and make water flow along flowing hole, with latent flow patterns into
Enter in subsequent ecological green belt；
4) using the submerged plant and emergent aquactic plant planted on plant biological bag in ecological green belt, to agricultural drain bring mud
Husky and nutrient is stopped, and sedimentation then passes through plant in the nutrient in ecological green belt, and in draining and absorbed；
5) it is heavy further to carry out absorption by charcoal based filler wall for the agricultural drain after ecological green belt is tentatively stopped
Drop；Agricultural drain contacts charcoal base adsorption stuffing layer in flow process, so that Water, phosphorus and organic matter are filled out by the absorption of charcoal base
Material absorption, then the microorganism by growing nonparasitically upon another plant in filler are converted removal by metabolism；Farmland at charcoal base adsorption stuffing layer
Draining flows downward with charcoal based filler wall, forms vertical current, and enter in water storage drainage area by filter layer；Agricultural drain exists
During filter layer, pollutant is filtered again and absorbs；
6) agricultural drain in water storage drainage area is discharged into the agriculture drainage ditch or other water bodys at rear by outlet；
7) charcoal based filler wall is periodically taken out, and is reentered into pond after replacing filler therein, the old filler more to swap out is made
For fertilizer returning to the field.
In the present invention, converted by the way that special interception is arranged in farmland drainage ditch, agricultural drain can be carried out it is low at
This consumption processing.In the interception conversion pool, water catchment area adjusts stream wall and ecological green belt to form by buffering, can not only slow down water
Flow velocity degree, reduces nutrient loss at retention paddy field drainage sludge, also has good landscape effect.It adsorbs Engagement Area and charcoal base is set
Filler wall adsorbs the nitrogen phosphorus in consumption rice field water runoff by suction-operated, nutrient discovery effect.The present invention can be as needed
Interval setting in the trench, can also be only used for drainage ditch end as tail water conditioning tank.The configuration of the present invention is simple, it is with low investment,
Setting flexibly, the purpose for realizing unpowered, Non-energy-consumption, facilitating management, be one kind meet China, the network of rivers, villages and small towns irrigation canals and ditches synchronize it is de-
The new process of nitrogen dephosphorization processing.
Detailed description of the invention
Fig. 1 is interception conversion pool top view of the present invention；
Fig. 2 is interception conversion pool sectional side elevation of the present invention；
Fig. 3 is the front view schematic diagram that buffering adjusts stream wall；
Fig. 4 is the partial enlargement diagram of ecological green belt；
Fig. 5 is the diagrammatic cross-section of charcoal based filler wall.
Appended drawing reference of the present invention is as follows:
Adsorb Engagement Area in 1 --- water catchment area 2 ---
3 --- water storage drainage areas 4 --- buffering adjusts stream wall
5 --- ecological green belt 6 --- charcoal based filler walls
7 --- canal bottom 8 --- porous plastics frames
9 --- spongy layer 10 --- charcoal base adsorption stuffing layers
11 --- filter layer 12 --- flowing holes
13 --- plant biological bag 14 --- submerged plants
15 --- emergent aquactic plant
Specific embodiment
The present invention is further elaborated and is illustrated with reference to the accompanying drawings and detailed description.Each implementation in the present invention
The technical characteristic of mode can carry out the corresponding combination under the premise of not conflicting with each other.
In a preferred embodiment of the invention, the synchronous interception conversion pool for realizing denitrogenation dephosphorizing is as illustrated in fig. 1 and 2, is in
Rectangular shape.The pond body of the interception conversion pool is set to conventional agriculture drainage ditch medium position, as in water flow process
Consumption pond.It intercepts the inlet and outlet that conversion pool is equipped with higher than pool bottom and intercepts conversion pool in the present embodiment
Inlet and outlet be separately connected externally drained irrigation canals and ditches, and the canal bottom 7 of drainage ditch is higher than pool bottom, the accumulation in pond
Capacity makes water flow have certain residence time in pond.Water catchment area 1 is sequentially divided into along water (flow) direction inside pond body, absorption is blocked
Area 2 and water storage drainage area 3 are cut, different functional areas undertake different effects.Wherein, it adsorbs in Engagement Area 2 and is equipped with across pond body
The charcoal based filler wall 6 of section, the bottom of charcoal based filler wall 6 connect with pool bottom, and wall both ends connect the two side walls of pond body,
So that pond body is that boundary is divided into two pond bodies, respectively water catchment area 1 and water storage drainage area 3 with charcoal based filler wall 6.Water catchment area
Due to being blocked and not being connected to directly there are charcoal based filler wall 6 between 1 and water storage drainage area 3, the water to come from water catchment area 1
Stream needs to can enter water storage drainage area 3 by 6 rear of charcoal based filler wall.It is equipped with buffering in water catchment area 1 and adjusts stream wall 4 and ecology isolation
The bottom of stream wall 4, ecological green belt 5 is adjusted to be supported in pool bottom with 5 bufferings.Charcoal based filler wall assumes responsibility for main denitrogenation and removes
Phosphorus task, water storage drainage area can temporarily store the draining of small part irrigation canals and ditches for adjusting irrigation canals and ditches water.It is set according to irrigation canals and ditches actual conditions
Setting and intercepting conversion pool pool capacity size is 1.5~3m3, bottom of pond portion and pool side edge cement solidification.
Since the water flow in farmland ditch has certain flow velocity, especially its initial velocity when rainfall generates larger runoff
It is larger, be directly entered in pond on the one hand be easy because the residence time it is too short cause treatment effeciency low, on the other hand as
Flow velocity is excessive to cause the pollutant for adsorbing, settling originally in pond to be gone out again.Therefore, in the pond at water inlet rear in the present invention
The stifled buffering of middle setting one adjusts stream wall 4.Buffering adjusts stream wall 4 and water (flow) direction to be vertically arranged and across pond body section, and Xiang Shui is met in front
Flow direction.As shown in figure 3, offering several flowing holes 12 on wall.It is 20~30cm, overhead height that buffering, which adjusts stream wall thickness,
Positioned at 2/3rds positions of externally drained irrigation canals and ditches height, width and practical irrigation canals and ditches are the same as wide.It is evenly arranged on buffering tune stream wall
Flowing hole plays the role of energy dissipating, slows down water velocity, can reduce and wash away to subsequent processing units, can make full use of
The interception decontamination of ecological green belt, and bottom stagnant water can be prevented.Flowing hole pore size is 5cm, mistake in the present embodiment
The distribution density of discharge orifice 12 on the wall is gradually reduced from top to bottom, so that the silt for sinking to lower section is not easy to reenter subsequent ring
Border, to achieve the effect that preferably to obstruct silt to guarantee tail water cleannes.
Ecological green belt 5 is set to buffer and adjust between stream wall 4 and absorption Engagement Area 2, including multiple for planting heavy water plant
Object 14 and the plant biological bag of emergent aquactic plant 15 13.It, will be big by rice field water bring silt and nutrient by the obstruction of ecological green belt
Part silt stays in ecological green belt, and the plant of isolation strip plantation can absorb the nutrient in water flow simultaneously, reaches control rice
Field draining reduces the purpose of nutrient discharge in water.
In the present embodiment, it is raw material, two-sided ironing acupuncture nonwoven that plant biological bag 13, which is by polypropylene PP or polyester fiber PET,
Cloth is process sack, can load plant growth medium, such as eco-concrete, boulder and cobble, sand etc. inside plant biological bag 13
Deng.Plant is fixed with plant biological bag 13, plant growth in situ can be kept, avoids spreading growth blocking irrigation canals and ditches to surrounding because of plant
Water channel.The single volume of plant biological bag 13 is 0.003~0.005m3, highly it is no more than canal bottom 7.
The plant planted in plant biological bag 13, which can according to need, to be selected.Wherein, submerged plant includes but is not limited to hardship
Grass, hornwort, watermifoil, small najas marina；Emergent aquactic plant includes but is not limited to reed, cattail, rhizoma calami, canna.Seed selection is as far as possible
Increase autochthonous flora ratio and avoid introducing the local existing ecological balance of wetland plant destruction, planting proportion is true according to local condition
It is fixed.Utilize complementarity of the different plants to nutrient absorption capability and the retention to agricultural non-point source pollution, filter capacity, effect master
Show two aspects: first is that playing to paddy field drainage stagnant since vegetal cover increases ecological green belt bottom roughness degree
Slow effect, adjusts the water flow for entering absorption Engagement Area；Second is that solid particle and nutrient content in paddy field drainage are effectively reduced, from
And become nutrient filter, improve draining water quality.
Pollutant in agricultural drain can be dissolved in ecological green belt 5 by stopping, but precipitate, the mistake of plant absorption
Journey is relatively slow, when handle flow it is biggish when be unable to satisfy water outlet and require, it is therefore desirable to cooperate other treatment process into
Row auxiliary, to guarantee outlet effect.It is realized in the present embodiment by the way that charcoal based filler wall 6 is arranged in absorption Engagement Area 2.Charcoal base is filled out
Expect that wall size is with a thickness of 40~60cm, with irrigation canals and ditches with width, slightly above at the top of irrigation canals and ditches, so that rice field water comes into full contact with charcoal based filler
Wall carries out adsorption and sedimentation to water pollutant.The shell of charcoal based filler wall 6 is using packaged type made of the biggish plastics of hardness
Porous framework 8, periodically to take out replacement.8 inner hollow of porous framework, and permeable structure is formed by aperture on outer wall.Frame
Structure inside frame as shown in figure 5, in its inner cavity in upstream face, go out the water surface and bottom is equipped with the spongy layer 9 of 2~3cm respectively,
Spongy layer can be all covered on each face of inner cavity when necessary, to prevent the loss of smaller filler particles.Sky between spongy layer 9
Two layers of different filler is filled in chamber, middle and lower part is filter layer 11, and top is charcoal base adsorption stuffing layer 10.Filter layer 11 can
To be stacked by fluid-tight grain dress filtrate, for being percolated to draining.And charcoal base adsorption stuffing layer 10 then uses charcoal base
Adsorbent material, such as conventional active carbon etc..In the present embodiment, filter layer 11 is filled out by the graded gravel of 3~5mm of partial size
It fills, packed height is a quarter of charcoal based filler wall height.Graded gravel preferably uses packing volume ratio for 1:1:1's
Haydite, sandstone and cobblestone mixing composition, have and are preferably percolated out dirty effect.The use of charcoal base adsorption stuffing layer 10 partial size 3~
The bamboo charcoal of 5~10mm of rice hull carbon or partial size of 5mm, packed height are 3/4ths of charcoal based filler wall height.Two kinds of charcoals can be with
It is used alone, can also be applied in combination, preferably rice hull carbon and bamboo charcoal mix and the volume ratio of filling is 1:2.Certainly, two
Specific filler, which also can according to need, in layer packing layer is adjusted.Filter layer can make the suspended contaminant in water body be sunk
Drop and absorption, charcoal base adsorption stuffing layer can effectively absorb the eutrophication pollutions object such as Water phosphorus, and rest on charcoal base and fill out
Nitrogen phosphorus on material wall converts under microbial action, to improve agricultural drain water treatment efficiency.
Since in charcoal based filler wall 6, filter layer 11 is located at bottom, therefore agricultural drain will be presented in absorption Engagement Area
Horizontal, vertical composite underflow state.The water flow on 6 top of charcoal based filler wall can flow downward along wall, and pollutant is in flow process
Adsorbed by charcoal based filler, into filter layer 11 after start in the form of level stream by enter subsequent water storage drainage area 3.Farmland row
Pollutant in water passes through the obstruction of filtrate first and screens out the organic contamination composition granule that effect intercepts different-grain diameter respectively, then by
The microorganism adsorption grown nonparasitically upon another plant in filtrate and filtrate is simultaneously converted removal by bacteria metabolism.Due to the charcoal base after saturation
The nutrients such as nitrogen phosphorus are adsorbed in material, fertility enhancing can continue agricultural, and fertilizer or soil as non-edible plant change
Good dose of use, achievees the purpose that resource utilization.
Based on above-mentioned interception conversion pool, interception conversion can be carried out to agricultural drain.And the interception conversion pool can be
The different location of agriculture drainage ditch is multiple along journey, dissolves as process；Also it can be set in the end of irrigation canals and ditches, as tail water tune
Save pond.The method for carrying out intercepting conversion to agricultural drain based on above-mentioned interception conversion pool is explained in detail below, its step are as follows:
1) it is excavated in the centre of agriculture drainage ditch or terminal position and intercepts conversion pool, and by submerged plant 14 and very water
15 kinds of plant are planted on plant biological bag 13；
2) it after collecting agricultural drain by irrigation canals and ditches confluence, inputs and is intercepted in conversion pool from water inlet；
3) it adjusts stream wall 4 to carry out energy dissipating reduction of speed to water flow using buffering, and makes water flow along flowing hole 12, with flow patterns of diving
Into in subsequent ecological green belt 5；
4) using the submerged plant 14 and emergent aquactic plant 15 planted on plant biological bag 13 in ecological green belt 5, to agricultural drain
Bring silt and nutrient are stopped, and sedimentation is then carried out by plant in the nutrient in ecological green belt 5, and in draining
It absorbs；
5) it is heavy further to carry out absorption by charcoal based filler wall 6 for the agricultural drain after ecological green belt 5 is tentatively stopped
Drop；Agricultural drain contacts charcoal base adsorption stuffing layer 10 in flow process, so that Water, phosphorus and organic matter are adsorbed by charcoal base
Filling adsorption, then the microorganism by growing nonparasitically upon another plant in filler are converted removal by metabolism；At charcoal base adsorption stuffing layer 10
Agricultural drain flows downward with charcoal based filler wall 6, forms vertical current, and enter in water storage drainage area 3 by filter layer 11；Agriculture
During by filter layer 11, pollutant is filtered again and absorbs for field draining；
6) agricultural drain in water storage drainage area 3 is discharged into the agriculture drainage ditch or other water bodys at rear by outlet；
7) charcoal based filler wall 6 is periodically taken out, and is reentered into pond after replacing charcoal base adsorption stuffing therein, is more swapped out
Old filler, especially charcoal base adsorption stuffing can be used as fertilizer returning to the field.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention.Have
The those of ordinary skill for closing technical field can also make various changes without departing from the spirit and scope of the present invention
Change and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within guarantor of the invention
It protects in range.
Claims (10)
1. a kind of synchronous interception conversion pool for realizing denitrogenation dephosphorizing, which is characterized in that the pond body for intercepting conversion pool, which is equipped with, to be higher than
The inlet and outlet of pool bottom are sequentially divided into water catchment area (1), absorption Engagement Area (2) inside pond body along water (flow) direction
With water storage drainage area (3)；The charcoal based filler wall (6) across pond body section, water catchment area are equipped in the absorption Engagement Area (2)
(1) it is not connected to directly between water storage drainage area (3) by charcoal based filler wall (6) barrier；It is equipped in the water catchment area (1) slow
Stream wall (4) and ecological green belt (5) is reconstituted, buffering adjusts the bottom of stream wall (4), ecological green belt (5) and charcoal based filler wall (6)
It is supported in pool bottom；
The buffering tune stream wall (4) and water (flow) direction is vertically arranged and offers several mistakes on pond body section, wall
Discharge orifice (12), and the distribution density of flowing hole (12) on the wall is gradually reduced from top to bottom；
The ecological green belt (5) is set to buffering and adjusts between stream wall (4) and absorption Engagement Area (2), including several are used for
The plant biological bag (13) of kind planting submerged plant (14) and/or emergent aquactic plant (15)；
In the absorption Engagement Area (2), the shell of charcoal based filler wall (6) uses porous framework (8), and porous framework (8) is internal
Hollow and outer wall is permeable, in inner cavity in upstream face, go out the water surface and bottom and be equipped with spongy layer (9) respectively；Between spongy layer (9)
Cavity in be filled with two layers of different filler, middle and lower part be filter layer (11), top be charcoal base adsorption stuffing layer (10).
2. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as described in claim 1, which is characterized in that the interception conversion pool
Inlet and outlet be separately connected externally drained irrigation canals and ditches, and the canal bottom (7) of drainage ditch is higher than pool bottom.
3. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as described in claim 1, which is characterized in that the interception conversion
Pond pool capacity size is 1.5~3m3, and pool side edge and bottom cement solidification.
4. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as described in claim 1, which is characterized in that the plant biological bag
(13) sack made of needle punched non-woven fabrics is used, bag interior loads plant growth medium.
5. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as claimed in claim 2, which is characterized in that the plant biological bag
(13) volume is 0.003~0.005m3, highly it is no more than canal bottom (7).
6. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as claimed in claim 2, which is characterized in that the charcoal based filler
Wall (6) is higher than at the top of the externally drained irrigation canals and ditches with a thickness of 40~60cm, top.
7. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as described in claim 1, which is characterized in that the buffering tune stream
Wall (4) is located at 2/3rds positions of externally drained irrigation canals and ditches height with a thickness of 20~30cm, overhead height.
8. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as described in claim 1, which is characterized in that the charcoal base absorption
Packing layer (10) is made of the bamboo charcoal of 5~10mm of rice hull carbon and/or partial size of 3~5mm of partial size.
9. the synchronous interception conversion pool for realizing denitrogenation dephosphorizing as described in claim 1, which is characterized in that the filter layer
(11) graded gravel for being 3~5mm of partial size.
10. a kind of using the method as described in claim 1 for intercepting conversion pool and carrying out intercepting conversion to agricultural drain, feature exists
In steps are as follows:
1) it is excavated in the centre of agriculture drainage ditch or terminal position and intercepts conversion pool, and by submerged plant (14) and very water plant
Object (15) is planted on plant biological bag (13)；
2) it after collecting agricultural drain by irrigation canals and ditches confluence, inputs and is intercepted in conversion pool from water inlet；
3) it adjusts stream wall (4) to carry out energy dissipating reduction of speed to water flow using buffering, and makes water flow along flowing hole (12), with flow patterns of diving
Into in subsequent ecological green belt (5)；
4) using the submerged plant (14) and emergent aquactic plant (15) planted on plant biological bag (13) in ecological green belt (5), to farmland
Draining bring silt and nutrient are stopped, and sedimentation is in ecological green belt (5), and the nutrient in draining then passes through plant
Object is absorbed；
5) it is heavy further to carry out absorption by charcoal based filler wall (6) for the agricultural drain after ecological green belt (5) are tentatively stopped
Drop；Agricultural drain contacts charcoal base adsorption stuffing layer (10) in flow process, so that Water, phosphorus and organic matter are inhaled by charcoal base
Attached filling adsorption, then the microorganism by growing nonparasitically upon another plant in filler are converted removal by metabolism；Charcoal base adsorption stuffing layer (10)
The agricultural drain at place flows downward with charcoal based filler wall (6), forms vertical current, and drain into water storage by filter layer (11)
In area (3)；During by filter layer (11), pollutant is filtered again and absorbs for agricultural drain；
6) agricultural drain in water storage drainage area (3) is discharged into the agriculture drainage ditch or other water bodys at rear by outlet；
7) charcoal based filler wall (6) periodically are taken out, and is reentered into pond after replacing filler therein, the old filler conduct more to swap out
Fertilizer returning to the field.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627328A (en) * | 2019-11-11 | 2019-12-31 | 长江水资源保护科学研究所 | Ecological low-lying pool and application thereof in farmland runoff and irrigation water-withdrawal purification |
| CN113800642A (en) * | 2021-09-27 | 2021-12-17 | 浙江清天地环境工程有限公司 | Ecological interception ditch for farmland runoff pollution |
| CN114230102A (en) * | 2021-12-21 | 2022-03-25 | 浙江大学 | Farmland water-returning treatment system and method based on ecological interception and circular purification |
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| CN110627328B (en) * | 2019-11-11 | 2021-06-08 | 长江水资源保护科学研究所 | Ecological low-lying pool and application thereof in farmland runoff and irrigation water-withdrawal purification |
| CN113800642A (en) * | 2021-09-27 | 2021-12-17 | 浙江清天地环境工程有限公司 | Ecological interception ditch for farmland runoff pollution |
| CN114230102A (en) * | 2021-12-21 | 2022-03-25 | 浙江大学 | Farmland water-returning treatment system and method based on ecological interception and circular purification |
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