CN209620231U - A kind of rainwater purification ecology tree cell system with laminate filtration construct - Google Patents

Abstract

A kind of rainwater purification ecology tree cell system with laminate filtration construct, the system are located at the lower section of surface filtration grid, and the medium filler region including layered arrangement is interior to be equipped with the root blocking structure that guide trees root growth direction；Internal structure is from top to bottom successively are as follows: retention layer, filter layer, transition zone and drainage blanket, transition zone and drainage blanket are equipped with perforated drain pipe, are connected to urban rainwater river outlet or water storage facility by perforated drain pipe as layer, the bottom of drainage blanket is flooded.On the one hand the system has the advantage that defaulted, filtering, clean-up effect of the enhancing tree cell system to rainwater especially enhance the efficiency of system removal solid suspension and denitrogenation dephosphorizing；On the other hand, by the way that root blocking structure, the growth of k-index, or the destruction according to the direction of growth of artificial subjective desire control root system, to avoid flourishing root system to facilities such as roads and pavement are arranged in tree pond.

Description

A kind of rainwater purification ecology tree cell system with laminate filtration construct

Technical field

It is especially a kind of not only to have a Water storage the utility model relates to technical field of water environment treatment, and can be with The tree pond for carrying out dmp filter purified treatment is a kind of sponge City Green infrastructure of efficiently removal pollutant, specifically Say it is a kind of rainwater purification ecology tree cell system with laminate filtration construct.

Background technique

When plant tree on the ground, one block of soil that do not mat formation should be retained around trees, usually it is cried Pond or plant pit are set, sets pond according to different scenes, including square landscape tree pond, roadside greening tape tree pond etc..

Traditional tree pond is beautified as urban landscape to be used, most without rainwater purification processing function, and part passes through height Completely cut off in the boundaries such as the enclosing on ground and rainfall runoff, to prevent water soil overflow from washing away.And from greenery patches, road, square etc. The rainwater collected, if directly drained by the fast discharge pipe of rainwater without processing, silt, the rubbish, agriculture taken away in runoff The organic matters such as medicine, petroleum, heavy metal, pathogenic bacteria etc. can be directly discharged into Storm Sewer Network, be ultimately discharged into the natural waters such as river and lake, Natural water outburst cyanobacteria is caused even to develop into the black and odorous water for being difficult to restore.Existing announcement handles function with rainwater-collecting Landscape tree pond is transform as soil, haydite and gravel layering knot with shallow-layer simple filtration function by the ecology tree pond of energy mostly The rainwater of structure, collection receives moment natural precipitation from tree pool surface product, and the rainwater that neighboring area is collected still is arranged from periphery fastly is System is drained, and rainwater-collecting and purification function are limited.Simultaneously as most of tree pond is arranged by road and pavement, with The growth of trees is easy to cause road and pavement certain destruction, maintenance cost is high, needs since root system is excessively flourishing There is certain facility to carry out the undue growth of k-index.

Utility model content

The purpose of this utility model is for traditional tree pond rainwater treatment scarce capacity and trees ' root undue growth pair In peripheral facility destroy the problem of, propose a kind of rainwater purification ecology tree cell system with laminate filtration construct；On the one hand, lead to Cross the Functional Design of amplified medium filler, defaulted, filtering, clean-up effect of the enhancing tree cell system to rainwater, especially enhancing system To the efficiency of solid suspension and denitrogenation dephosphorizing；And the setting for flooding layer enables tree root to continue to play good pollutant removal Ability, purifying rainwater；Improved system realizes water reuse or qualified discharge to natural water after capable of making rainwater purification；Separately On the one hand, by the setting root blocking structure in tree pond, the growth of k-index, or root is controlled according to artificial subjective desire The direction of growth of system, the destruction to avoid flourishing root system to facilities such as roads and pavement.

The technical solution of the utility model is:

A kind of rainwater purification ecology tree cell system with laminate filtration construct, the system are located at the lower section of filtering grid, Medium filler region including layered arrangement is equipped with the root obstacle knot that can guide trees root growth direction in filler region Structure；Aforementioned filler region is set gradually from top to bottom are as follows: filter layer, transition zone and drainage blanket, filter layer top is for storing The retention layer of rainwater, foregoing transition layer and drainage blanket are equipped with perforated drain pipe, perforation draining as layer, the bottom of drainage blanket is flooded The end of pipe is equipped with water outlet, is connected to urban rainwater river outlet or containment structures by water outlet to recycle.

Further, the surface filtration grid of tree cell system setting can be according to surrounding landscape demand by art up processing Being customized design, surface filtration grid main function be can remove the biggish dead leaf of surface area, rubbish etc., and for tree pond system The functional woody plant of the mating plantation in surface of uniting provides growing space, enhances system removal ability.

Further, the root blocking structure of filter layer setting is to be fitted into spliced obstacle n-cube lattice coral, including at least One layer of mesh grille, mesh grille are equipped with column, when mesh grille is multilayer, are equipped between adjacent layer mesh grille vertical Column, preferably material are PVC.

Further, column is arranged the size for the tree root that the channel to be formed is guided with needs, the direction phase of growth Match.

Further, the porosity of perforated drain pipe need to be greater than 3%.

Further, the pond body side wall setting waterproof layer in pond is set, opens up overflow port on the pond body side wall above retention layer, The overflow port passes through piping connection to municipal Storm Sewer Network.

Further, filled media raw material, the medium filled in transition zone, filter layer and drainage blanket are layered in filler region Partial size is sequentially increased.

Further, being detained layer height is 100~250mm, and filtering layer height is 400~600mm, and transition layer height is 200~300mm, draining layer height are 100~200mm.Further, filter layer filler middle layer addition absorption particle, it is preferably living Property charcoal and zeroth order iron mixture or zeolite and zeroth order iron mixture；The two mass ratio is 5:1, and mixture quality is filter layer The 3%~5% of packing quality.

Further, slow release carbon source, the natural carbon source of preferred plant biomass, plant biological are added in transition zone filler The preferred corncob of the natural carbon source of matter, rice husk, sawdust perhaps stalk or by corncob, rice husk, sawdust or stalk through processing The solid carbon source of generation；The slow release carbon source quality of addition accounts for the 1%~3% of transition zone filler.

The utility model has the beneficial effects that

The rainwater purification processing tree cell system of the utility model can collect the rainwater diameter from road surface, greenery patches, square etc. Stream, certain region can largely alleviate the pressure that rainwater concentration is discharged into underground pipe network using multiple systems, reduce peak value；Rainwater During lower infiltration, most suspended matter is amputated by surface materials, further through the effect of adsorption stuffing in filter layer, It goes to denitrogenate with physical chemistry and biological treatment principle method, phosphorus, organic matter, heavy metal, pollutants (the especially denitrogenation such as pathogenic bacteria Phosphor-removing effect is good)；Purified rainwater is collected to water tank reuse, or is emitted into Storm Sewer Network, or imports natural water.

Waterproof outer wall is arranged in the tree pond of the utility model, guarantees the layer that floods that certain altitude is contained in its bottom, Ke Yiti For anaerobic environment, nitrification and denitrification efficiency is improved, its processing capacity to rainwater is enhanced.It sets in pond, it is big according to trees size Small and root system sturdy degree flexible setting root blocking structure is placed in inside tree pond, with the growth of k-index, or presses Destruction according to the direction of growth of artificial subjective desire control root system, to avoid flourishing root system to road and pavement.

Each layer filler in the filler region of the utility model is used in combination, to guarantee that Introduced cases runoff can be within effective time Filtration treatment is obtained, and long-play is unlikely to block.In addition, going back mixed active charcoal, Zero-valent Iron, slow release carbon in filler Source guarantees efficiently to handle the polluter in rainwater, especially to going the oil removal, denitrogenation dephosphorizing to have significant effect Fruit.

The interior media surface for setting pond can plant the herbaceous plant with purification function simultaneously as needed, enhance pollutant Absorption and conversion capability also increases bio-diversity and landscape function.

Other features and advantages of the utility model will then part of the detailed description can be specified.

Detailed description of the invention

The utility model illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the utility model it is upper It states and other purposes, feature and advantage will be apparent, wherein in the utility model illustrative embodiments, phase Same reference label typically represents same parts.

Fig. 1 shows the structural schematic diagram of the utility model.

In figure: 1, filtering grid；2, filler region；3, root blocking structure；4, mesh grille；5, column；6, perforation row Water pipe；7, retention layer；8, filter layer；9, transition zone；10, drainage blanket；11, overflow port；12, water outlet.

Specific embodiment

Preferred embodiments of the present invention are described below, may be realized in various forms the utility model without answering It is limited by the embodiments set forth herein.

A kind of rainwater purification ecology tree cell system with laminate filtration construct, the system are located at the lower section of filtering grid 1, Medium filler region 2 including layered arrangement, filler region 2 is interior to be equipped with the root obstacle that can guide trees root growth direction Structure 3；Aforementioned filler region 2 is set gradually from top to bottom are as follows: filter layer 8, transition zone 9 and drainage blanket 10 are above filter layer 8 Perforation is equipped with for storing the retention layer 7 of rainwater, foregoing transition layer 9 and drainage blanket 10 as layer, the bottom of drainage blanket 10 is flooded The end of drainpipe 6, perforated drain pipe 6 is equipped with water outlet 12, is connected to urban rainwater river outlet or water storage by water outlet 12 Structure is to recycle.

The system construction step are as follows: rainwater purification ecology tree pond is arranged in selected certain, according to system catchment area to tree The size in pond is designed, and General System surface area and catchment area ratio are no more than 5%；The position Shu Chi is excavated, bottom The waterproof outer wall of building concrete or it is directly placed into the watertight housing of corresponding size in the position after compacting, according to drainage blanket 10, transition zone 9, filter layer 8 sequence load medium filler, wherein antipriming pipe is embedded in drainage blanket 10, be connected to catch-basin or Water storage device；After the completion of transition zone 9 loads, nursery stock is put into system, installs root blocking structure additional, is then situated between with filter layer 8 Matter is loaded.Finally, according to actually functional herbaceous plant can be planted on surface, and cover both surface filtration grid.

As shown in Figure 1, the root blocking structure 3 that filter layer 8 is arranged is to be fitted into spliced obstacle n-cube lattice coral, including extremely Few one layer of mesh grille 4, mesh grille 4 are equipped with column 5, when mesh grille 4 is multilayer, between adjacent layer mesh grille 4 Equipped with column 5；The size of tree root that guides with needs of channel that the arrangement of column 5 is formed, the direction of growth match, by not The modular structure of same specification is spliced.In the pond the utility model Zhong Shu, according to trees size and the sturdy degree of root system Can flexible setting root blocking structure, be placed in tree pond inside, with the growth of k-index, or according to artificial subjective desire Control the direction of growth of root system, the destruction to avoid flourishing root system to facilities such as roads and pavement.

Further, the porosity of perforated drain pipe 6 need to be greater than 3%.

Further, 7 height of retention layer is 100~250mm, and 8 height of filter layer is 400~600mm, 9 height of transition zone For 200~300mm, 10 height of drainage blanket is 100~200mm, media particle size selected by 8 transition zone of filter layer, 9 drainage blanket 10 It is sequentially increased.

8 filler middle layer of filter layer addition absorption particle, preferably active carbon and zeroth order iron mixture or zeolite and Zero-valent Iron Mixture；The two mass ratio is 5:1, and mixture quality is the 3%~5% of 8 packing quality of filter layer.

Slow release carbon source, the natural carbon source of preferred plant biomass, plant biomass natural carbon are added in 9 filler of transition zone The preferred corncob in source, rice husk, sawdust perhaps stalk or by corncob, rice husk, sawdust or stalk by processing generate consolidating Body carbon source；The slow release carbon source quality of addition accounts for the 1%~3% of 9 filler of transition zone.

There is inherent connections between the above-mentioned each layer in filler region, and have specific particle diameter distribution to want filler It asks, is refined to the percentage of medium within the scope of different-grain diameter, can guarantee that Introduced cases runoff can be obtained within effective time Filter processing, and long-play is unlikely to block.In addition, going back mixed active charcoal, Zero-valent Iron, slow release carbon source in filler, protect Card can efficiently handle the polluter in rainwater, especially have significant effect to denitrogenation dephosphorizing.

In the utility model, the pond body side wall setting waterproof layer in pond is set, waterproof outer wall is formed, guarantees that its bottom contains one That determines height floods layer, can provide anaerobic environment, improves nitrification and denitrification efficiency, enhances its processing capacity to rainwater.

Embodiment one:

The one of tree pond for being built in certain square transform functional rainwater purification ecology tree cell system as, by its original height It is reduced, apparent height is down to below ground, is designed as 1m²；Reserved 7 height 150mm of retention layer, 10 height of drainage blanket 150mm, 9 height 300mm of transition zone, 8 height 500mm of filter layer, medium are provided by standard by local supplier；Tree species are selected resistance to Excess water China fir, diameter 100mm or so；For outer wall using PVC shell as external water-tight structure, surrounding is set into water notch；Antipriming pipe Nearest catch-basin is accessed, and overflow pipe is set；One layer of root barrier is arranged in plant root, after interior media loads, Surface surrounding edge plants sedge, and mats formation crescent surface filtration grid on system top.After tested, which cuts suspended particle Rate is stayed to reach 95% or more, water outlet main indicator reaches III class water of earth's surface.

Embodiment two:

The tree pond for being built in certain road green belt is transformed, and a 1m is arranged every 10m²Pond is set, is come from collection processing The rainfall runoff of middles lanes, concave indentation is arranged in greenbelt, to guarantee that rainwater is discharged into system in time；Indentation, there is by square bar Silk screen impales, and stops bulky refuse, leaf；Reserved 7 height of retention layer is 200mm, 10 height 100mm of drainage blanket, and transition zone 9 is high 300mm, 8 height 400mm of filter layer are spent, medium is provided by standard by local supplier；Tree species select the diameter 20mm rose of Sharon；Outer wall Using precast concrete as water-tight structure；Antipriming pipe accesses Storm Sewer Network, and overflow pipe is arranged；One layer of root is arranged in plant root Portion's barrier, after interior media loads, surface surrounding edge plants iris, and mats formation on system top and can control open surface Filter grid.After tested, which reaches 95% or more to suspended particle rejection, and water outlet main indicator reaches III class water of earth's surface More than.

In conclusion the rainwater purification processing tree cell system of the utility model can be collected from road surface, greenery patches, square etc. Rainfall runoff, rainwater removes most suspended substances during lower infiltration, through surface, by adsorption stuffing in filter layer 8 Effect, go to denitrogenate with physical chemistry and biological treatment principle method, phosphorus, organic matter, heavy metal, the pollutants such as pathogenic bacteria it is (outstanding Its Nitrogen/Phosphorus Removal is good), purified rainwater is collected to water tank reuse, or is emitted into Storm Sewer Network, or is imported certainly Right water body.

Waterproof outer wall is arranged in the tree pond of the utility model, guarantees the layer that floods that certain altitude is contained in its bottom, Ke Yiti For anaerobic environment, nitrification and denitrification efficiency is improved, its processing capacity to rainwater is enhanced.It sets in pond, it is big according to trees size Small and root system sturdy degree flexible setting root blocking structure is placed in inside tree pond, with the growth of k-index, or presses Destruction according to the direction of growth of artificial subjective desire control root system, to avoid flourishing root system to facilities such as roads and pavement.

Each embodiment of the utility model is described above, above description is exemplary, and non-exclusive, and And it is also not necessarily limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for Many modifications and changes are obvious for those skilled in the art.

Claims (5)

1. a kind of rainwater purification ecology tree cell system with laminate filtration construct, which is characterized in that the system is located at filter grid The lower section of grid (1), the medium filler region (2) including layered arrangement, being equipped in filler region (2) can guide trees ' root raw The root blocking structure (3) of length direction；Aforementioned filler region (2) is set gradually from top to bottom are as follows: filter layer (8), transition zone (9) With drainage blanket (10), filter layer (8) top is the retention layer (7) for storing rainwater, foregoing transition layer (9) and drainage blanket (10) As layer is flooded, the bottom of drainage blanket (10) is equipped with perforated drain pipe (6), and the end of perforated drain pipe (6) is equipped with water outlet (12), urban rainwater river outlet or containment structures are connected to recycle by water outlet (12)；Filter layer (8) setting 's；Root blocking structure (3) is spliced obstacle n-cube lattice coral, including at least one layer of mesh grille (4), mesh grille (4) It is equipped with column (5), when mesh grille (4) are multilayer, is equipped with column (5) between adjacent layer mesh grille (4)；Column (5) The size of tree root that guides with needs of channel that arrangement is formed, the direction of growth match.

2. the rainwater purification ecology tree cell system according to claim 1 with laminate filtration construct, which is characterized in that wear The porosity of hole drainpipe (6) need to be greater than 3%.

3. the rainwater purification ecology tree cell system according to claim 1 with laminate filtration construct, which is characterized in that tree Waterproof layer is arranged in the pond body side wall in pond, opens up overflow port (11), the overflow port on the pond body side wall above retention layer (7) (11) pass through piping connection to Storm Sewer Network.

4. the rainwater purification ecology tree cell system according to claim 1 with laminate filtration construct, which is characterized in that fill out Expect to be layered filled media raw material in region (2), the media particle size filled in transition zone, filter layer and drainage blanket is sequentially increased.

5. the rainwater purification ecology tree cell system according to claim 1 with laminate filtration construct, which is characterized in that stagnant Staying layer (7) highly is 100 ~ 250mm, and filter layer (8) is highly 400 ~ 600mm, and transition zone (9) is highly 200 ~ 300mm, draining Layer (10) is highly 100 ~ 200mm.