CN209276229U - A kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system - Google Patents
A kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system Download PDFInfo
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- CN209276229U CN209276229U CN201822017327.6U CN201822017327U CN209276229U CN 209276229 U CN209276229 U CN 209276229U CN 201822017327 U CN201822017327 U CN 201822017327U CN 209276229 U CN209276229 U CN 209276229U
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Abstract
The utility model discloses a kind of rural area landscape type ecological canal nitrogen phosphorus intercepting systems, belong to the technical fields such as agricultural non-point source pollution control and water environment treatment.It includes silt buffer strip, ecological canal unit, intercepts conversion pool and ridge hedgerow plant；The silt buffer strip, ecological canal unit intercept conversion pool and are sequentially arranged in continuous irrigation canals and ditches along water (flow) direction；The ridge hedgerow plant is set on the ridge of irrigation canals and ditches one or both sides.The utility model can further play its Ecology Action on the basis of not influencing farmland and normally producing function, converge farmland as the consumption of environment nitrogen, phosphorus, to achieve the purpose that optimization draining water quality, improve farmland ecological environment.
Description
Technical field
The utility model relates to a kind of rural area landscape type ecological canal nitrogen phosphorus intercepting systems, belong to agricultural non-point source pollution control
With the technical fields such as water environment treatment.
Background technique
Ecological canal technology is similar to the artificial swamp wastewater processing technology being currently widely used, agricultural drain in irrigation canals and ditches
Nitrogen, phosphorus nutrition substance are under the collective effect of irrigation canals and ditches water plant and irrigation canals and ditches bottom mud microbe, with absorption, absorption, precipitating, filtering
Got off with the diversified forms such as microbial degradation by obstruction.Water plant root system can directly absorb the ammonia nitrogen in agricultural drain,
Nitrate nitrogen and phosphate promote it in the exchange interaction at interface, so that pollutant be accelerated to enter bed mud by breaking interface balance
Speed enhances its interception capacity.
There has been ecological canal made of a large amount of newly-built and transformation in China at present, these ecological canals are intercepted in face source sewage
Play the role of huge in processing, but there is also can not be ignored:
1) common ecological canal is not high to nitrogen and phosphorus pollutants removal efficiency, and it is micro- to rely primarily on emergent aquactic plant and bed mud in canal
Biosphere is adsorbed and is absorbed to nitrogen and phosphorus pollutants, and bio-diversity is single, and ecosystem stability is insufficient, vulnerable to extraneous ring
Border influences, and since phytomass, contact area, reaction efficiency and the limitation of residence time, removal efficiency of nitrogen and phosphorus are typically maintained in
70% or so, and can also be reduced in system adsorption saturation efficiency of post treatment；
2) absorption, the pollutant absorbed fail effectively to be disposed in common ecological canal, carry out special meeting in heavy rain, flood
It releases pollutant is counter in the form of leaching or alienation into water body and farmland, causes secondary pollution.
3) common ecological canal fails " field-ridge-ditch-pond-road " as unified entirety, and the ecological functions in farmland fail
It is played to effective, and does not meet the construction demand of Space For Beauity and green ecological gallery.
Summary of the invention
The purpose of this utility model is insufficient for existing farmland ecosystem function and irrigation canals and ditches intercept detergent power weakness
The shortcomings that, on the basis of not influencing farmland and normally producing function, further to play its Ecology Action, provide a kind of " field-
The rural area landscape type ecological canal nitrogen phosphorus Interception Technology of stalk-ditch-pond-road " composite integrated.
Specific technical solution used by the utility model is as follows:
A kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system, including silt buffer strip, ecological canal unit, interception turn
Change pond and ridge hedgerow plant；The silt buffer strip, ecological canal unit intercept conversion pool and are sequentially arranged along water (flow) direction
In continuous irrigation canals and ditches；The ridge hedgerow plant is set on the ridge of irrigation canals and ditches one or both sides；
A downward slope is arranged along the front end in water inlet direction in the silt buffer strip, constitutes drop area, and drop area
End connection irrigation canals and ditches canal bottom；The area downstream Transverse to the flow direction setting buffering that drops adjusts stream wall；The buffering tune stream wall is horizontal
Cross section across entire irrigation canals and ditches, buffering are adjusted and are disposed with several flowing holes on stream wall, and the distribution density of flowing hole on the wall is from upper
It is gradually reduced under；
The ecological canal unit includes embedded nitrification-denitrification-dephosphorization complete set processing unit and water plant
Group's unit；In embedded nitrification-denitrification-dephosphorization complete set processing unit insertion irrigation canals and ditches, for being taken off to agricultural drain
Nitrogen dephosphorization；The aquatic vegetation unit is set to embedded nitrification-denitrification-dephosphorization complete set processing unit downstream
In irrigation canals and ditches, slope protection bracket is fixed in the irrigation canals and ditches section side wall where aquatic vegetation unit, gather bracket net on slope protection bracket
Lattice, for planting emergent aquactic plant and submerged plant；
The interception conversion pool be set to insertion irrigation canals and ditches in, intercept conversion bottom of pond portion be lower than canal bottom, and water inlet and go out
The mouth of a river is concordant with canal bottom；It intercepts and is sequentially divided into water catchment area, absorption Engagement Area and water storage draining inside conversion pool along water (flow) direction
Area, described adsorbs the charcoal based filler wall being equipped in Engagement Area across pond body section, passes through between water catchment area and water storage drainage area
The barrier of charcoal based filler wall is not connected to directly；The shell of the 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 out in cavity between spongy layer
Filled with two layers of different filler, middle and lower part is filter layer, and top is charcoal base adsorption stuffing layer；
The ridge hedgerow plant is set on the ridge of the irrigation canals and ditches one or both sides, and bottom is to be layed in ridge
The cobble band on surface, kind is implanted with emergent aquactic plant and/or wetland shrub on cobble band.
Preferably, the embedded nitrification-denitrification-dephosphorization complete set processing unit bottom is lower than irrigation canals and ditches canal
The inlet and outlet at bottom, device are concordant with canal bottom, form concave shape drop structure in water inlet position；The processing unit
Pond body in be equipped with baffle plate A, baffle plate B, baffle plate C, baffle plate D, the plate face of four pieces of baffle plates is vertical with water (flow) direction,
There are circulation passages between every piece of baffle plate and device side wall, the circulation passage position between adjacent two pieces of baffle plates and device side wall
In the not ipsilateral of device, bowed water flow passage is formed inside processing unit under the water conservancy diversion of four pieces of baffle plates；Baffle plate A, folding
Flowing plate B, baffle plate C, the side baffle plate D the circulation passage at be respectively equipped with plant biological bag module, ferrimanganic complex oxide film mould
Block, inhales phosphorus medium module at denitrification module；The plant biological bag module by be built in ecology bag eco-concrete, rubble group
At opening up the hole for emergent aquactic plant in bag body；The ferrimanganic combined oxidation film module is by the multi-panel that is built in ecology bag
Hollow sphere and rubble composition, are wherein attached with Fe-Mn oxidation film on polyhedron empty ball；The denitrification module is by being built in ecology
Polyhedron empty ball and rubble composition in bag, wherein adhere to or are filled with denitrification matrix on polyhedron empty ball；The suction phosphorus is situated between
Matter module is made of the polyhedron empty ball and rubble being built in ecology bag, is wherein adhered to or is filled on polyhedron empty ball and inhales phosphorus
Medium.
Preferably, further including wide paths for tractors in the countryside, and the ecological canal nitrogen phosphorus intercepting system is along the side of wide paths for tractors in the countryside or two
Side is laid with；Wide paths for tractors in the countryside plants landscape plant along journey.
Preferably, the ramp slope in the drop area is 1:1~1:2.
Preferably, the buffering adjust stream wall with a thickness of 20~30cm, 2/3rds of a height of irrigation canals and ditches height, width with
Irrigation canals and ditches are identical.
Preferably, the slope protection bracket is worked out by wicker or agricultural crop straw, bracket side length of element is 20~
30cm。
Preferably, the interception conversion pool pool capacity size is 1.5~3m3, and pool side edge and bottom cement solidification.
Preferably, the charcoal based filler wall thickness is 40~60cm, top is higher than at the top of irrigation canals and ditches, width and irrigation canals and ditches
It is identical；Charcoal base adsorption stuffing layer is made of the bamboo charcoal of 5~10mm of rice hull carbon and/or partial size of 3~5mm of partial size；The diafiltration
Layer is the graded gravel of 3~5mm of partial size.
Preferably, the cobble bandwidth is 0.3~0.5m, it is laid with using partial size 3~10cm cobble, and keeps 3
~10% gradient, the gradient are tilted to irrigation canals and ditches side.
The utility model can further play its Ecology Action on the basis of not influencing farmland and normally producing function,
It is converged farmland as the consumption of environment nitrogen, phosphorus, to achieve the purpose that optimization draining water quality, improve farmland ecological environment.This reality
With it is novel be for solve the problems, such as that existing agricultural ecological function is insufficient and irrigation canals and ditches to intercept detergent power weak, optimize " field-the ridge-
Agricultural biodiversity is enriched in effect of the ditch-pond-road " in entire composite system, increases ridge buffering, beautification, economic function
Can, water body environment landscape effect and pollution self-purification capacity are promoted, while catering to the demand of Space For Beauity construction, makes every effort to make farmland
Green ecological gallery promotes agriculture Green Development.
Detailed description of the invention
Fig. 1 is ecological canal sectional view described in the utility model；
Fig. 2 is the buffering tune stream wall partial enlargement diagram of Fig. 1；
Fig. 3 is the slope protection support schematic diagram of Fig. 1；
Fig. 4 is the slope protection bracket partial enlargement diagram of Fig. 3；
Fig. 5 is the interception conversion pool sectional view of Fig. 1；
Fig. 6 is the interception conversion pool top view of Fig. 1；
Fig. 7 is the charcoal based filler wall sectional side elevation of Fig. 5；
Fig. 8 is ridge hedgerow plant sectional view；
Fig. 9 is embedded nitrification-denitrification-dephosphorization complete set processing unit sectional view；
Figure 10 is embedded nitrification-denitrification-dephosphorization complete set processing unit top view；
The utility model appended drawing reference is as follows:
1 --- drop area 2 --- canal bottom
3 --- buffering adjusts stream wall 4 --- flowing holes
5 --- embedded nitrification-denitrification-dephosphorization complete set processing unit 6 --- slope protection brackets
7 --- bracket grid 8 --- emergent aquactic plants
9 --- submerged plants 10 --- intercept conversion pool
Adsorb Engagement Area in 11 --- water catchment areas 12 ---
13 --- water storage drainage area 14 --- charcoal based filler walls
15 --- porous plastics frame 16 --- sponges
17 --- charcoal base adsorption stuffing layer 18 --- filter layers
19 --- cobble band 20 --- wetland shrubs
Specific embodiment
The utility model is further elaborated and is illustrated with reference to the accompanying drawings and detailed description.In the utility model
The technical characteristic of each embodiment can carry out the corresponding combination under the premise of not conflicting with each other.
In one preferred embodiment of the utility model, rural area landscape type ecological canal nitrogen phosphorus intercepting system is as shown in Figure 1.
The basic functional units of the rural area landscape type ecological canal nitrogen phosphorus intercepting system can be divided into silt buffer strip, ecological canal list
Member intercepts conversion pool and ridge hedgerow plant.Silt buffer strip, ecological canal unit, intercept conversion pool along water (flow) direction sequentially
It is set in continuous irrigation canals and ditches, and ridge hedgerow plant is set on the ridge of irrigation canals and ditches one or both sides.Each functional unit can be with
Excavation building is carried out on the basis of existing agriculture drainage ditch, can also excavate to form corresponding structure again completely, but its
Essence is the ecological canal with irrigation canals and ditches nitrogen phosphorus ability.Each functional unit has the function of different in this system, below
Being structurally and functionally described in detail to each functional unit respectively.
Silt buffer strip is arranged in the upstream of irrigation canals and ditches, for carrying out reduction of speed to the water flow for entering system, so that silt obtains
Deposition prevents the functional unit at blocking rear.The front end of silt buffer strip is arranged a downward slope along water inlet direction and constitutes
Drop area 1, and gradient 1:1~1:2 is arranged according to practical irrigation canals and ditches size and current conditions in drop area slope, and drop 1 posterior end of area
The canal bottom 2 for connecting irrigation canals and ditches, is in same plane with trench bottom.1 downstream Transverse to the flow direction of the area setting buffering that drops adjusts stream wall
3, buffering adjusts stream wall 3 across the cross section of entire irrigation canals and ditches.Water flow slows down since the depth of water increases flow velocity, realizes behind the area that drops
Buffering is to more conducively sediment settlement；The 1 rear vertical water (flow) direction of area that drops setting buffering adjusts stream wall 3, with a thickness of 20~
30cm, 2/3rds of a height of practical irrigation canals and ditches height, width and practical irrigation canals and ditches are the same as wide.As shown in Fig. 2, buffering is adjusted on stream wall 3
Even arrangement flowing hole 4, flowing hole 4 is set as the structure that distribution density is gradually reduced from top to bottom, to reach better barrier
Silt is to guarantee the effects of tail water cleannes.Buffering adjust stream wall be used for and drop area's down stream formed of short duration acceleration water flow collision,
To consume the kinetic energy generated by down stream, so that adjusting the water velocity of stream wall to slow down by buffering, even velocity of flow is dropping in this way
Under the gentle comprehensive function for reconstituting stream wall 3 in area 1, water flow has the characteristics that deep and delays, and greatly improves the effect of settling of silt；It is heavy
The silt for dropping accumulation can remove in regular dredging according to the actual situation, prevent obstruction irrigation canals and ditches water flow circulation.
Ecological canal unit includes that embedded nitrification-denitrification-dephosphorization complete set processing unit 5 and aquatic vegetation are single
Member, and embedded nitrification-denitrification-dephosphorization complete set processing unit 5 is located at upstream, aquatic vegetation unit is located at downstream.
Embedded nitrification-denitrification-dephosphorization complete set processing unit 5 is embedded in irrigation canals and ditches, for taking off to agricultural drain
Nitrogen dephosphorization.Its specific structure is as shown in Figures 9 and 10, and embedded nitrification-denitrification-dephosphorization complete set processing unit 5 is with irrigation canals and ditches
Based on continue downwards excavate formed cube groove, therefore the bottom of its device be lower than irrigation canals and ditches canal bottom 2, the water inlet of device
It is concordant with canal bottom 2 with water outlet, concave shape drop structure is formed in water inlet position.Drop locations of structures can be vertical drop
It is also possible to the slope with certain inclination angle to drop.Whole device bottom along water (flow) direction the gradient, that is, gradient be 0.3
~0.5%, which can make that water flow is promoted to flow automatically under the effect of gravity, without in addition energy consumption.
It is equipped with baffle plate A5-7, baffle plate B5-8, baffle plate C5-9, baffle plate D5-10 in the pond body of processing unit, every piece
The length of baffle plate is less than the cross-sectional width of groove, so that there are circulation passages between every piece of baffle plate and device side wall.
Adjacent baffle plate is set on the not ipsilateral side wall of groove, and the circulation passage of adjacent two pieces of baffle plates and device side wall distinguishes position
In the two sides of device.Therefore, as can be seen from the figure.The interlude groove of processing unit shape under the water conservancy diversion of four pieces of baffle plates
The water flow passage of archwise.Baffle plate A5-7, baffle plate B5-8, baffle plate C5-9, the side baffle plate D5-10 circulation passage at
It is respectively equipped with plant biological bag module 5-2, ferrimanganic combined oxidation film module 5-3, denitrification module 5-4, inhales phosphorus medium module 5-5.Often
A module is wrapped up with ecology bag, in order to avoid scattered and disappeared by current scour.Ecology bag is had using gunnysack, geotextiles etc.
Sack made of the seepy material of mesh, different functional module materials, which is loaded into, executes different functions in sack.Below by
A specific setting that different modules is described in detail.
Plant biological bag module 5-2 is made of the eco-concrete, rubble and very water landscape plant being built in ecology bag, rubble
With certain type, stabilization pocket body position can be played the role of in ecology bag, prevent from being subjected to displacement with water flow, under
The rubble in other sacks stated also functions to similar effect.Very water landscape plant 5-6 is planted on eco-concrete, and top passes through
Bag body is stretched out in aperture on ecology bag, and is higher than horizontal plane 5-1, can be irradiated to sunlight.Very water landscape plant is proposed with Huang
Flower kite or canna etc. can use plant stalk system and carry out absorption and absorption to water pollutant, while also having good
Ornamental performance.Paddy field drainage sweeps along silt to first pass around the nitrogen phosphorus quick coupling plant biological bag for holding emergent aquactic plant, has in water
The elements such as machine object and N, P can be intercepted first as nutrient matrix by plant and be utilized, and reduce the load of subsequent processing module.It plants
Object root system discharges the transmitting of oxygen, makes its surrounding microenvironment that aerobic-anaerobic-anaerobism successively be presented, passes through nitration and opposite nitration
And microorganism is removed the excess accumulation effect of phosphorus, reaches the purpose and effect of retention removal some of the contaminants.Ferrimanganic is multiple
It closes oxidation film module 5-3 to be made of the polyhedron empty ball being built in ecology bag, can according to need placement rubble in ecology bag.
Adhere to or be filled with ferrimanganic complex oxide film on polyhedron empty ball.Any side in the prior art can be used in ferrimanganic complex oxide film
Method preparation is coated on polyhedron empty ball, can also be compound in polyhedron empty ball surface using commercially available material.Ferrimanganic combined oxidation
Film is amorphous structure, and main component is iron, manganese, calcium, oxygen etc., since it is with biggish specific surface area and hydroxyl-functional
Group, therefore there is good oxidation susceptibility and adsorption capacity, catalysed oxidn effectively can be carried out to ammonia nitrogen in water and then reach
Removal effect.But since Fe-Mn oxidation film oxidation-adsorption ability is limited, unadsorbed ammonia nitrogen is oxidizable at nitrate and nitrous
Hydrochlorate enters in water, and then the three cause substances for being converted into " carcinogenic teratogenesis mutagenesis " are detrimental to health, therefore need to be into after also wanting
The processing of one step.Denitrification module 5-4 is made of the polyhedron empty ball being built in ecology bag, also can according to need in ecology bag
Place rubble.Denitrification matrix is attached on polyhedron empty ball.Denitrification matrix be one layer with denitrifying bacterium biomembrane or
Polyhedron empty ball can be placed a period of time, to its biofilm by person's sludge in the sludge with denitrifying bacterium by domestication
It is taken out afterwards loaded in ecology bag.In the present embodiment, part denitrification sludge and polyhedron empty ball is directly taken to be mixed loaded in bag,
Sludge can adhere to, be filled in the gap of sphere, and polyhedron empty ball surface can gradually biofilm during processing.In other realities
It applies in example, can also directly take in the denitrification zone in reactor or sewage treatment facility that the polyhedron empty ball of biofilm is loaded on
In bag.It inhales phosphorus medium module 5-5 to be made of the polyhedron empty ball being built in ecology bag, can according to need placement in ecology bag
Rubble.Adhere on polyhedron empty ball or filled with phosphorus medium is inhaled, inhales phosphorus medium mainly by calcite and its phosphate-modified product
Composition, removes phosphate by suction-operated.Calcite is the carbonate mineral of crystal category trigonal system, low in cost and be easy to
It obtains, and the product after its absorption phosphate can be re-used for phosphatic removal in water.After calcite can clay into power, it is kneaded into
Spherical shape is loaded on polyhedron empty ball inner cavity, or polyhedron empty ball surface is sprayed into after claying into power.
In the device of the present embodiment, the ecology bag volume that each module uses is 0.003~0.005m3, highly it is no more than
Canal bottom 2.The overhead height of 4 pieces of baffle plates is concordant with canal bottom 2,1~2cm of plate thickness.The bottom of device of processing unit interlude and
The equal rough surface of device groove walls strengthens the processing to draining in order to biofilm.
Aquatic vegetation unit is set to embedded nitrification-denitrification -5 downstream of dephosphorization complete set processing unit irrigation canals and ditches
In, which reconstructed based on irrigation canals and ditches itself.Shield is fixed in irrigation canals and ditches section side wall where aquatic vegetation unit
Slope bracket 6, gather on slope protection bracket 6 bracket grid 7.Emergent aquactic plant 8 can be planted in bracket grid and bottom of trench and heavy water is planted
Object 9 increases irrigation canals and ditches animals and plants diversity, so that the unit forms the complete of " the miniature aquatic animals-microbiologic population of water plant-"
The kind ecosphere.When rice field, water flows through aquatic vegetation unit, since blocking for canal bottom emergent aquactic plant and submerged plant is viscid
Effect, sluggish flow and it is uniform.By precipitation, the suspended particulate substance SS in the water of rice field further carries particle organic contamination
Object precipitating condenses upon on the aquatic vegetation and bed mud of canal bottom and side wall.Active zoogloea, aquatic micro- in bed mud and in water
Biology adsorbs organic pollutant by biggish specific surface area and is inhaled organic pollutant by metabolism under aerobic environment
It receives, convert, assimilating into removal of the biomass completion to biochemical oxygen demand (BOD) BOD；And water plant and the rhizosphere life for depending on its growth
Object circle then contains phosphor contaminant by the nitrogen-containing pollutant in root system absorption, synergistic effect absorption water and partially, and passes through nitre respectively
Change reaction, anti-nitration reaction, suction phosphorus release phosphorus reaction and are converted into nitrogen and organic phosphorus completion removal.
In the present embodiment, slope protection bracket is worked out by wicker or agricultural crop straw, bracket side length of element be 20~
30cm。
Pollutant in agricultural drain can be dissolved in plant ecosystem by stopping, but precipitating, plant absorption
Process is relatively slow, is unable to satisfy water outlet when processing flow is biggish and requires, it is therefore desirable to cooperate other treatment process
It is assisted, to guarantee outlet effect.It is realized in the present embodiment by the way that interception conversion pool 10 is arranged in irrigation canals and ditches end.It intercepts and turns
Change pond 10 to be set in insertion irrigation canals and ditches, intercept conversion pool and be connected with irrigation canals and ditches, intercepts 10 bottom of conversion pool and be lower than canal bottom 2, and intake
Mouth and water outlet are concordant with canal bottom 2.It is arranged according to irrigation canals and ditches actual conditions and intercepts conversion pool pool capacity size as 1.5~3m3, bottom of pond portion
Lower than trench bottom, and pool side edge and bottom cement solidification.As it can be seen in figures 5 and 6, being divided into three systems in pond, i.e., along water flow
Direction is sequentially divided into water catchment area 11, absorption Engagement Area 12 and water storage drainage area 13.Wherein adsorb Engagement Area 12 in be equipped with across
The charcoal based filler wall 14 of pond body section is not connected directly between water catchment area 11 and water storage drainage area 13 by the barrier of charcoal based filler wall 14
It is logical.The nitrogen phosphorus adsorbed in conversion pool 10 by suction-operated, nutrient discovery effect in consumption rice field water runoff is intercepted, was reached
Journey intercepts, reduces the purpose of nitrogen and phosphorus loss.
Charcoal based filler wall size is long 50cm and irrigation canals and ditches are with width, slightly above irrigation canals and ditches top, so that rice field water comes into full contact with charcoal
Based filler wall carries out adsorption and sedimentation to water pollutant.Charcoal based filler wall selects packaged type made of the biggish plastics of hardness
Porous framework 15 is used as shell, periodically to take out replacement.15 inner hollow of porous framework, and formed on outer wall by aperture
Water-bound.The structure of lower portion as shown in fig. 7, in its inner cavity in upstream face, go out the water surface and bottom is equipped with 2~3cm respectively
Spongy layer 16, spongy layer can be all covered on each face of inner cavity when necessary, to prevent the loss of smaller filler particles.Sponge
Two layers of different filler is filled in cavity between layer 16, middle and lower part is filter layer 18, and top is charcoal base adsorption stuffing layer
17.Filter layer 18 can fill filtrate by fluid-tight grain and stack, for being percolated to draining.And charcoal base adsorption stuffing layer
17 adsorbent materials, such as conventional active carbon etc. using charcoal base.In the present embodiment, filter layer 18 is by 3~5mm's of partial size
Graded gravel filling, packed height are a quarter of charcoal based filler wall height.Graded gravel preferably uses packing volume ratio
Haydite, sandstone and cobblestone the mixing composition that example is 1:1:1, have and are preferably percolated out dirty effect.Charcoal base adsorption stuffing layer 17
Using the bamboo charcoal of 5~10mm of rice hull carbon or partial size of 3~5mm of partial size, packed height is 3/4ths of charcoal based filler wall height.
Two kinds of charcoals may be used alone, can also be used in combination, and preferably rice hull carbon and bamboo charcoal mix and the volume ratio of filling is
1:2.Certainly, specific filler also can according to need and be adjusted in two layers of packing layer.Filter layer can make the suspension in water body
Pollutant is settled and is adsorbed, and charcoal base adsorption stuffing layer can effectively absorb the eutrophication pollutions object such as Water phosphorus, and
The nitrogen phosphorus rested on charcoal based filler wall converts under microbial action, to improve agricultural drain water treatment efficiency.
Since in charcoal based filler wall 14, filter layer 18 is located at bottom, therefore agricultural drain will be in absorption Engagement Area
Existing horizontal, vertical composite underflow state.The water flow on 14 top of charcoal based filler wall can flow downward along wall, and pollutant is in flow process
It is middle to be adsorbed by charcoal based filler, into filter layer 18 after start in the form of level stream by enter subsequent water storage drainage area 13.Agriculture
Pollutant in the draining of field passes through the obstruction of filtrate first and screens out the organic contamination composition granule that effect intercepts different-grain diameter respectively,
Removal is converted by the microorganism adsorption grown nonparasitically upon another plant in filtrate and filtrate and by bacteria metabolism again.After saturation
The nutrients such as nitrogen phosphorus are adsorbed in carbon based material, fertility enhancing can continue fertilizer or soil agricultural, as non-edible plant
Earth modifying agent uses, and achievees the purpose that resource utilization.
Where ridge hedgerow plant is set to nitrogen phosphorus intercepting system on the ridge of irrigation canals and ditches one or both sides, bottom is to be laid with
Cobble band 19 in ridge surface, kind is implanted with emergent aquactic plant 8 and wetland shrub 20 on cobble band 19.Ridge hedgerow plant according to
Irrigation canals and ditches situation setting, it is proposed that it is tall that cobble band, emergent aquactic plant and wetland are set on the ridge of fairly large irrigation canals and ditches one or both sides
Shrub；Cobble band and emergent aquactic plant are only laid on the ridge of small-scale irrigation canals and ditches one or both sides.Cobble bandwidth is according to reality
0.3~0.5m is arranged in border irrigation canals and ditches ridge width, is laid with using partial size 3~10cm cobble, and keeps 3~10% gradient, the gradient
It is tilted to irrigation canals and ditches side, the dense planting plant as needed outward of the cobble band in hedgerow plant.Ridge hedgerow plant can be used as life
State slope protection protects irrigation canals and ditches, while when the spill-over of irrigation canals and ditches water or flood arrive, ridge hedgerow plant can form wetland with irrigation canals and ditches
Buffer strip, Gu soil controls flood and sewage outflow is prevented to cause secondary pollution；In heavy rain, ridge hedgerow plant can not only pass through ovum
The Intercepting effects of stone band and root system of plant cauline leaf avoid heavy rain entrainment foreign matter from entering irrigation canals and ditches and cause obstruction or pollution, can also be uniform
Heavy rain water is buffered, sewerage is protected.Ridge hedgerow plant and ecological canal unit composition association system can be formed compared with
For high ecological community, while strengthening rice field water process, good littoral ecoscape can also be formed, beautiful field is met
The construction demand in garden and farmland green ecological gallery.
After above-mentioned each unit, silt therein is effectively settled for agricultural drain, and nitrogen phosphorus, that is, organic matter etc. is easy
The substance of eutrophication is caused also efficiently to be removed, draining can continue to enter along irrigation canals and ditches in other water environments.
Certainly, in another embodiment, can also build in ecological canal two sides for the wide paths for tractors in the countryside as road.Tractor-ploughing
The both sides on road or on one side building ecology corridor, vegetation type, the population structure, strain of ecology corridor are determined according to different regions
Away from, bandwidth, band spacing parameter: arbor spacing is generally 1.5~2m, shrub of arranging in pairs or groups between two arbors, sows grassed area in shrub, grass
Bandwidth is 0.5~1m, is determined with specific reference to the width of wide paths for tractors in the countryside；Arbor, shrub, herbaceous plant are combined into plantation, realize life
Object diversity takes into account the enrichment of nitrogen phosphorus and plants landscape economic effect.
In the utility model, the plant planted in the entire system can according to need determination.Emergent aquactic plant includes but not
It is limited to reed, cattail, rhizoma calami, canna；Submerged plant includes but is not limited to eel grass, hornwort, watermifoil, small najas marina；Grass
This plant includes but is not limited to reed, cattail, rhizoma calami, canna；Wetland shrub includes but is not limited to the cattail's spike, the rose of Sharon, phoenix
Tail orchid, Chinese wistaria.Seed selection increases autochthonous flora ratio as far as possible and avoids introducing the local existing ecological balance of wetland plant destruction, plantation
Ratio is determined according to local condition.
Plant in ecological canal unit and ridge needs to be gathered in annual autumn, and passes through anaerobic composting, poultry
Plant is disposed by nursing, economic plants deep processing etc., to prevent nitrogen and phosphorus pollutants release from causing secondary pollution, realizes simultaneously
Environmental economical profit feedback is in the people.
Based on above-mentioned nitrogen phosphorus intercepting system, interception conversion can be carried out to agricultural drain.And in the nitrogen phosphorus intercepting system,
Different units can be arranged 1 as shown in fig. 1, can also agriculture drainage ditch different location along journey be arranged it is multiple.
The method for carrying out intercepting conversion to agricultural drain based on above-mentioned nitrogen phosphorus intercepting system is explained in detail below, its step are as follows:
1) after farmland being carried out confluence collection by drainage ditch, from silt buffer strip input nitrogen phosphorus intercepting system；
2) water flow is made to consume agricultural drain using the gentle barrier for reconstituting stream wall 3 of the increasing of depth of water depth by drop area
Because of the kinetic energy that down stream generates, slow down flow rate of water flow, so that silt gradually settles；
3) water flow is made to continue to flow, into embedded nitrification-denitrification-dephosphorization complete set processing unit 5, and its into
Height journey drop drop water aeration, while further energy dissipating are utilized at the mouth of a river；Agricultural drain pass through drop water aeration after by plant biological bag
Module 5-2 absorbs Organic substance in water and nutritive salt as nutrient using emergent aquactic plant；Transmitting of the root system of plant to oxygen is utilized simultaneously
Release, makes its surrounding microenvironment that aerobic-anaerobic-anaerobism successively be presented, by nitration and opposite nitration and microorganism to the mistake of phosphorus
Measure summation, retention removal part nitrogen and phosphorus pollutants；After the processing of plant biological bag module 5-2, it is multiple that farmland water enters ferrimanganic
Oxidation film module 5-3 is closed, using the oxidation susceptibility and adsorption capacity of ferrimanganic complex oxide film, catalysis oxidation is carried out to ammonia nitrogen in water
Act on and then reach removal effect；The subsequent NO3-N and NO2-N that is oxidized to of unadsorbed ammonia nitrogen enters in water；By
After ferrimanganic combined oxidation film module 5-3 processing, agricultural drain enters denitrification module 5-4, and using being enriched in denitrification module
Denitrification flora using the NO3-N and NO2-N generated early period as electron donor carry out denitrification, nitrate nitrogen
It is reduced into nitrogen；Agricultural drain will continue by inhaling phosphorus medium module 5-5 to the phosphorus in water body after passing through denitrification module 5-4
Hydrochlorate carries out Adsorption；It is discharged by inhaling phosphorus medium module 5-5 treated agricultural drain from the outlet of the processing unit,
Continuation flows into aquatic vegetation unit along irrigation canals and ditches；
4) when agricultural drain flows through aquatic vegetation unit, by planting in the emergent aquactic plant on canal bottom and canal wall and sinking
The stiction of blocking of water plant, delays water flow to flow, so that the suspended particulate substance in water further carries particle organic contamination
Object precipitating condenses upon on the aquatic vegetation and bed mud of canal bottom and side wall；Utilize the microorganism in bed mud and in water, aquatic plant
Object absorption, degradation nitrogen, phosphorus, organic pollutant；
5) agricultural drain after aquatic vegetation unit goes successively to intercept in the water catchment area 11 of conversion pool 10,
Adsorption and sedimentation is carried out by charcoal based filler wall 14；Agricultural drain contacts charcoal base adsorption stuffing layer 17 in flow process, so that water
Nitrogen, phosphorus and organic matter are adsorbed by charcoal base adsorption stuffing in body, then the microorganism by growing nonparasitically upon another plant in filler passes through metabolism for its turn
Change removal；Agricultural drain at charcoal base adsorption stuffing layer 17 flows downward with charcoal based filler wall 14, forms vertical current, and pass through
Filter layer 18 enters in water storage drainage area 13；During by filter layer 18, pollutant is filtered again and inhales for agricultural drain
It receives；
6) by intercepting treated the waste water of conversion pool 10, continue to flow along irrigation canals and ditches, into other water environments, for filling
It irrigates or is discharged into rivers and lakes.
Embodiment described above is a kind of preferable scheme of the utility model, and so it is not practical to limit
It is novel.Those of ordinary skill in related technical field can be in the case where not departing from the spirit and scope of the utility model
It makes a variety of changes and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within
In the protection scope of the utility model.
Claims (10)
1. a kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system, which is characterized in that including silt buffer strip, ecological canal list
Member intercepts conversion pool and ridge hedgerow plant；The silt buffer strip, ecological canal unit intercept conversion pool along water flow side
To being sequentially arranged in continuous irrigation canals and ditches；The ridge hedgerow plant is set on the ridge of irrigation canals and ditches one or both sides；
A downward slope is arranged along the front end in water inlet direction in the silt buffer strip, constitutes drop area (1), and drop area
(1) the canal bottom (2) of end connection irrigation canals and ditches；Area (1) the downstream Transverse to the flow direction setting buffering that drops adjusts stream wall (3)；Described
Buffering adjusts stream wall (3) across the cross section of entire irrigation canals and ditches, and buffering is adjusted to be disposed with several flowing holes (4) on stream wall (3), and flowing hole
(4) distribution density on the wall is gradually reduced from top to bottom；The ecological canal unit includes embedded nitrification-denitrification-
Dephosphorization complete set processing unit (5) and aquatic vegetation unit；Embedded nitrification-denitrification-dephosphorization complete set processing unit
(5) it is embedded in irrigation canals and ditches, for carrying out denitrogenation dephosphorizing to agricultural drain；The aquatic vegetation unit is set to embedded nitre
In the irrigation canals and ditches of change-denitrification-dephosphorization complete set processing unit (5) downstream, the irrigation canals and ditches section side wall where aquatic vegetation unit
On be fixed with slope protection bracket (6), on slope protection bracket (6) gather bracket grid (7), for plant emergent aquactic plant (8) and heavy water plant
Object (9)；
The interception conversion pool (10) is set in insertion irrigation canals and ditches, is intercepted conversion pool (10) bottom and is lower than canal bottom (2), and intakes
Mouth and water outlet are concordant with canal bottom (2)；It intercepts and is sequentially divided into water catchment area (11), absorption inside conversion pool (10) along water (flow) direction
Engagement Area (12) and water storage drainage area (13) are equipped with the charcoal based filler wall across pond body section in the absorption Engagement Area (12)
(14), it is not connected to directly between water catchment area (11) and water storage drainage area (13) by charcoal based filler wall (14) barrier；The charcoal
The shell of based filler wall (14) uses porous framework (15), porous framework (15) inner hollow and outer wall is permeable, in inner cavity
Upstream face, the water surface and bottom are equipped with spongy layer (16) respectively out；It is different filled with two layers in cavity between spongy layer (16)
Filler, middle and lower part be filter layer (18), top be charcoal base adsorption stuffing layer (17)；
The ridge hedgerow plant is set on the ridge of the irrigation canals and ditches one or both sides, and bottom is to be layed in ridge surface
Cobble band (19), cobble band (19) on kind is implanted with emergent aquactic plant (8) and/or wetland shrub (20).
2. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that described is embedded
Nitrification-denitrification-dephosphorization complete set processing unit (5) bottom be lower than irrigation canals and ditches canal bottom (2), the inlet and outlet of device with
Canal bottom (2) concordantly, in water inlet position forms concave shape drop structure；Baffle plate A (5- is equipped in the pond body of the processing unit
7), baffle plate B (5-8), baffle plate C (5-9), baffle plate D (5-10), the plate face of four pieces of baffle plates is vertical with water (flow) direction,
There are circulation passages between every piece of baffle plate and device side wall, the circulation passage position between adjacent two pieces of baffle plates and device side wall
In the not ipsilateral of device, bowed water flow passage is formed inside processing unit under the water conservancy diversion of four pieces of baffle plates；Baffle plate A (5-
7), baffle plate B (5-8), baffle plate C (5-9), the side baffle plate D (5-10) the circulation passage at be respectively equipped with plant biological bag
Module (5-2), denitrification module (5-4), inhales phosphorus medium module (5-5) at ferrimanganic combined oxidation film module (5-3)；The plant life
Bag module (5-2) is made of eco-concrete, the rubble being built in ecology bag, is opened up in bag body for planting emergent aquactic plant
Hole；The ferrimanganic combined oxidation film module (5-3) is made of the polyhedron empty ball and rubble being built in ecology bag, wherein more
Fe-Mn oxidation film is attached on the hollow sphere of face；The denitrification module (5-4) by the polyhedron empty ball that is built in ecology bag and
Rubble composition wherein adheres to or is filled with denitrification matrix on polyhedron empty ball；The suction phosphorus medium module (5-5) is by being built in
Polyhedron empty ball and rubble composition in ecology bag, wherein adhere to or are filled on polyhedron empty ball and inhale phosphorus medium.
3. rural area landscape type ecological canal nitrogen phosphorus intercepting system as claimed in claim 1 or 2, which is characterized in that further include machine
Road is ploughed, and the ecological canal nitrogen phosphorus intercepting system is laid with along the side of wide paths for tractors in the countryside or two sides；Wide paths for tractors in the countryside plants landscape along journey
Plant.
4. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the drop area
(1) ramp slope is 1:1~1:2.
5. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the buffering adjusts stream
Wall (3) with a thickness of 20~30cm, 2/3rds of a height of irrigation canals and ditches height, width is identical as irrigation canals and ditches.
6. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the slope protection bracket
(6) it is worked out by wicker or agricultural crop straw, bracket grid (7) side length is 20~30cm.
7. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the interception turns
Change pond (10) pool capacity size is 1.5~3m3, and pool side edge and bottom cement solidification.
8. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the charcoal base is filled out
Wall (14) are expected with a thickness of 40~60cm, and top is higher than at the top of irrigation canals and ditches, and width is identical as irrigation canals and ditches；Charcoal base adsorption stuffing layer (17) by
The bamboo charcoal of 5~10mm of rice hull carbon and/or partial size of 3~5mm of partial size forms；The filter layer (18) is the grade of 3~5mm of partial size
With gravel.
9. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the cobble band
(19) width is 0.3~0.5m, is laid with using partial size 3~10cm cobble.
10. rural area landscape type ecological canal nitrogen phosphorus intercepting system as described in claim 1, which is characterized in that the cobble
Band (19) keeps 3~10% gradient, and the gradient is tilted to irrigation canals and ditches side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822017327.6U CN209276229U (en) | 2018-12-04 | 2018-12-04 | A kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822017327.6U CN209276229U (en) | 2018-12-04 | 2018-12-04 | A kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system |
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| Publication Number | Publication Date |
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| CN209276229U true CN209276229U (en) | 2019-08-20 |
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ID=67609672
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| CN201822017327.6U Withdrawn - After Issue CN209276229U (en) | 2018-12-04 | 2018-12-04 | A kind of rural area landscape type ecological canal nitrogen phosphorus intercepting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553191A (en) * | 2018-12-04 | 2019-04-02 | 浙江大学 | Rural area landscape type ecological canal nitrogen phosphorus intercepting system and method |
| CN111233263A (en) * | 2020-01-21 | 2020-06-05 | 浙江问源环保科技股份有限公司 | Nitrogen and phosphorus degradation equipment for ditch |
| CN114249429A (en) * | 2021-11-25 | 2022-03-29 | 中铁第五勘察设计院集团有限公司 | River beach type artificial wetland for enhanced denitrification |
-
2018
- 2018-12-04 CN CN201822017327.6U patent/CN209276229U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553191A (en) * | 2018-12-04 | 2019-04-02 | 浙江大学 | Rural area landscape type ecological canal nitrogen phosphorus intercepting system and method |
| WO2020114039A1 (en) * | 2018-12-04 | 2020-06-11 | 浙江大学 | System and method for intercepting nitrogen and phosphorus in countryside landscape type ecological ditch |
| US11352279B2 (en) | 2018-12-04 | 2022-06-07 | Zhejiang University | Rural landscape-type nitrogen and phosphorus ecological interception ditch system and farmland drainage nitrogen and phosphorus interception method using the same |
| CN111233263A (en) * | 2020-01-21 | 2020-06-05 | 浙江问源环保科技股份有限公司 | Nitrogen and phosphorus degradation equipment for ditch |
| CN114249429A (en) * | 2021-11-25 | 2022-03-29 | 中铁第五勘察设计院集团有限公司 | River beach type artificial wetland for enhanced denitrification |
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