CN208791293U - It is a kind of to be detained pool structure with the rainwater biology for flooding layer - Google Patents
It is a kind of to be detained pool structure with the rainwater biology for flooding layer Download PDFInfo
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- CN208791293U CN208791293U CN201821216523.XU CN201821216523U CN208791293U CN 208791293 U CN208791293 U CN 208791293U CN 201821216523 U CN201821216523 U CN 201821216523U CN 208791293 U CN208791293 U CN 208791293U
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Abstract
The utility model provides a kind of with the rainwater biology delay pool structure for flooding layer, it is mainly used in the reduction of rainfall runoff flood peak and rainfall runoff bring controlling area-source pollution, it is purified including city and rural area Introduced cases pollution of area source, the delaying basin is set gradually from top to bottom are as follows: retention layer, filter layer, transition zone and drainage blanket, successively sequential build from bottom to top；The transition zone and drainage blanket have as layer is flooded and effectively store rainwater, provide anaerobic environment, enhance contaminant removal capacity；Each layer filler of the utility model is used in combination, and guarantees that biological delaying basin can for a long time, efficiently handle the polluter in rainwater, especially has significant effect to denitrogenation dephosphorizing.
Description
Technical field
Can be used in that rainfall runoff peak is effectively reduced the utility model relates to technical field of water environment treatment, especially one kind
Value and volume, and effectively remove the nutriments such as contained solid suspension, nitrogen, phosphorus, heavy metal, pathogen, carbon in runoff pollution
The rainwater biology delaying basin of the filterability facility of hydrogen compound and some micro quantity organic pollutants, specifically a kind of have flood
No the rainwater biology of layer is not detained pool structure.
Background technique
The rainwater biology delaying basin implemented at this stage largely uses soil or sand mixture cultivated plant, and passes through
Naturally the lower rainwater seeped in root system of plant treatment tank body, generally uses opening Design, i.e., by pond body surface collection rainwater, certainly
It is so lower to seep into Soil Surrounding environment.Due to limited infiltration rate and storage space, the rainfall runoff in system can not stored up
It can occur excessive to pond body periphery in the case where depositing excessive rainwater, can not both collect a large amount of rainwater of processing, and to pollutant
Processing capacity is also extremely limited, especially in the shallower area of level of ground water (River Network), it is micro- to the ability of rainwater treatment its
It is micro-.Moreover, the growing environment that this design also results in plant is not sufficiently stable, can not in the less arid area of rainwater
It protects and stores enough water sources, plant needs to irrigate to guarantee to grow needs when drought period.
Moreover, internal blockage problem occurs in actual operation for a large amount of constructed rainwater biology delaying basins, for rain
The processing of water produces certain negative influence, or even causes secondary pollution.The reason of causing this phenomenon is mainly existing stagnant
It stays the filler of facility not fully consider the property of layering filler, does not carry out the design and test of science.For pollutant input compared with
For the region of concentration, design originally also cannot achieve efficient pollutant removal.Therefore, for preferably meet rainwater treatment and
Water environment treatment demand need to consider more to enhance the effect to rainwater-collecting and pollutant removal, to obtain cleaning
Water source supplement.
Utility model content
It is open biological gaseous-waste holdup system that the purpose of this utility model, which is for traditional rainwater biology delaying basin, frequent occurrence
Inside blocking, can not save water source leads to the problems such as dry season plant growth is difficult, and pollutant process effect is poor, proposes that one kind has
The rainwater biology for flooding layer is detained pool structure.
The technical solution of the utility model is:
It is a kind of to be detained pool structure with the rainwater biology for flooding layer, it is set gradually from top to bottom in the delaying basin are as follows: be detained
As layer is flooded, the height for flooding layer passes through collector pipe for layer, filter layer, transition zone and drainage blanket, foregoing transition layer and drainage blanket
Water outlet height be arranged and realize, aforementioned collector pipe is divided into two parts, and a part is located in drainage blanket, and another part is located at pond body
It is external；The end of collector pipe is connected to rain collection well, collects the rainwater saved in rain collection well and extracts reuse by water pump.
Further, collector pipe is located at the pipeline in drainage blanket using perforated pipe, and the pipeline outside pond body is using non-
Perforated pipe.
Further, the collector pipe water outlet, that is, not perforated pipe end height and the upper surface for flooding layer are mutually neat.
Further, it is straight pipe that collector pipe, which is located at the pipeline in drainage blanket, and end connects emptying after stretching out drainage blanket
Valve, the rear portion of straight pipe are connected to the upper surface of rain collection well on the front collector pipe of blow valve by bend pipe.
Further, the delaying basin side wall above retention layer is equipped with the first overflow port, and first overflow port passes through pipe
Road is connected to municipal Storm Sewer Network；The second overflow port is arranged in the side wall of rain collection well, and aforementioned second overflow port is connected by pipeline
It is connected to municipal Storm Sewer Network.
Further, the lower surface of the second overflow port is not higher than the upper surface for flooding layer.
Further, being detained layer height is 200-300mm；Filtering layer height is 400-600mm；Transition layer height is 200-
300mm；Draining layer height is 100-200mm.
Further, filter layer adds the fertilizer for plant growth from 0~100mm depth of the upper surface under.
The utility model has the beneficial effects that
Not permeable outer wall around the rainwater biology delaying basin setting of the utility model guarantees that inside biological delaying basin be complete
Impermeable hydrospace；The setting of drainpipe water outlet away from bottom 400mm or so eminence, can guarantee biology delay bottom of pond portion guarantor in this way
There are layer is flooded, the setting of layer is flooded, ensure that in non-prolonged drought persistently there is water at corresponding height, is provided ideal
Anaerobic environment, medium flood the growth that can guarantee anaerobe into water for a long time, increase nitrification and denitrification effect, are promoted
Denitrogenation dephosphorizing ability.In addition, flooding layer by setting, biological delaying basin deposit moisture can be made, guarantee that plant can in drought period
With continued propagation.
Compounded mix is used in the pond of the utility model, each layer filler is used in combination, and can be improved the place to input runoff
Manage efficiency；Enhance physics processing capacity (suction-operated), chemical processability (redox reaction), biological treatment capabilities are (micro-
Biological biochemistry reaction), improve denitrogenation dephosphorizing efficiency；Promote good biological ecological environment in filler to be formed, enhances long-time denitrogenation
Dephosphorization efficiency can keep detergent power for a long time, be not easy to plug, and form good biological cleaning local environment.
It is described in the utility model to have the rainwater biology delaying basin for flooding layer, it can be effectively reduced rainfall runoff peak value and body
Product, dispersion short-time storm collects water flow, and improves the treatment effeciency to input runoff；It, can while enhancing denitrogenation dephosphorizing effectiveness
Suspended matter, heavy metal, organic matter, pathogen, hydrocarbon and some micro quantity organic pollutants are effectively removed, runoff rain is purified
Water realizes the reuse of water；Since the effect of plant increases bio-diversity, Landscape benefit is provided, and is improved local microcosmic
Weather reduces tropical island effect.For economy, the delaying basin cost performance is high, because its good performance can reduce maintenance cost,
And produced modularization in batches can be further realized.
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.
Fig. 2 shows the grading curve schematic diagrames of candidate dielectric.
Fig. 3 is shown in embodiment one, solid suspension TSS concentrations versus's curve before and after five continuous natural precipitation events.
Fig. 4 is shown in embodiment one, total nitrogen TN concentrations versus's curve before and after five continuous natural precipitation events.
Fig. 5 is shown in embodiment one, total phosphorus TP concentrations versus's curve before and after five continuous natural precipitation events.
Fig. 6 is shown in embodiment two, 12 catchment water inlet front and back solid suspension TSS concentrations versus's curves.
Fig. 7 is shown in embodiment two, 12 catchment water inlet front and back total nitrogen TN concentrations versus's curves.
Fig. 8 is shown in embodiment two, 12 catchment water inlet front and back total phosphorus TP concentrations versus's curves.
Fig. 9 is shown in embodiment three, solid suspension TSS concentrations versus's curve before and after six continuous natural precipitation events.
Figure 10 is shown in embodiment three, total nitrogen TN concentrations versus's curve before and after six continuous natural precipitation events.
Figure 11 is shown in embodiment three, total phosphorus TP concentrations versus's curve before and after six continuous natural precipitation events.
In figure: 1, retention layer；2, filter layer；3, transition zone；4, drainage blanket；5, layer is flooded；6, impervious barrier；7, cobblestone；
8, greenery patches；9, the first overflow port；10, collector pipe；11, rain collection well；12, the second overflow port；13, water pump；14, blow valve；
15, sighting tube.
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.
It is a kind of to be detained pool structure with the rainwater biology for flooding layer, it is set gradually from top to bottom in the delaying basin are as follows: be detained
As layer 5 is flooded, the height for flooding layer 5 is logical for layer 1, filter layer 2, transition zone 3 and drainage blanket 4, foregoing transition layer 3 and drainage blanket 4
The water outlet height setting for crossing collector pipe 10 realizes that aforementioned collector pipe 10 divides for two parts, and a part is located in drainage blanket 4, separately
A part is located at outside pond body；The end of collector pipe 10 is connected to rain collection well 11, and collection is saved in rain collection well 11
Rainwater extracts reuse by water pump 13.
Further, the delaying basin side wall of 1 top of retention layer is equipped with the first overflow port 9, and first overflow port 9 passes through
Piping connection to municipal Storm Sewer Network, the lower section of drainage blanket 4 is connected to rain collection well 1 by perforated catchment pipe 10；Flood layer 5
Including drainage blanket 4 and transition zone 3, highly it is arranged by the water outlet height of collector pipe 10 and is realized；Collector pipe 10 divides for two parts,
The part for being distributed in pool bottom is designed as perforated pipe, and not perforated pipe is divided into outside pond body；The lower section of drainage blanket 4 passes through collector pipe
10 are connected to rain collection well 11, and the rainwater saved is collected in rain collection well 11 and extracts reuse by water pump 13；The collection
The height of 10 water outlet of water pipe and the upper surface for flooding layer 5 are mutually neat, and the straight pipe of aforementioned collector pipe 10 is equipped with blow valve 14；It is detained
The delaying basin side wall of 1 top of layer is equipped with the first overflow port 9, and first overflow port 9 passes through piping connection to municipal rain pipe
Net；The second overflow port 12 is arranged in the side wall of rain collection well 11, and aforementioned second overflow port 12 passes through piping connection to municipal rainwater
Pipe network；The lower surface of second overflow port 12 is not higher than the upper surface for flooding layer 5.
In pond body, 1 height of retention layer is 200-300mm；2 height of filter layer is 400-600mm；3 height of transition zone is
200-300mm；4 height of drainage blanket is 100-200mm.It is not permeable outer around the rainwater biology delaying basin setting of the utility model
Wall guarantees inside biological delaying basin to be totally-enclosed space；The setting of drainpipe water outlet is away from bottom 400mm or so eminence, in this way
Biology can be guaranteed, which to be detained at bottom of pond portion certain altitude, persistently water；Medium floods for a long time can guarantee anaerobe into water
Growth, increase nitrification and denitrification effect, promotion denitrogenate ability.In addition, flooding layer 5 by setting, biological delay can be made
Moisture is laid in pond within drought period, guarantees that plant can be avoided with continued propagation because withered or even dead caused by water shortage within drought period
It dies.
Wherein: retention layer 1 is used to store rainwater in short term when catchment；
The filler with conventional filtration effect, sandstone of the preferable particle size less than 3400 μm are equipped in filter layer 2；
Transition zone 3 is equipped with conventional fillers between filter layer 2 and drainage blanket 3, and preferable particle size is greater than filling out for filter layer 2
Material；
Drainage blanket 4 is equipped with the filler conventionally used for embedding drainpipe, and preferable particle size is greater than the filler of transition zone 3.
It is a kind of when being detained pool structure with the rainwater biology for flooding layer and specifically constructing, it can preferred following steps:
Impervious barrier 6 is arranged in S1, building pond body, pond body side wall, from being sequentially disposed in drainage blanket 4, mistake from top to bottom in pond body
It crosses layer 3, filter layer 2,1 height of retention layer and is respectively as follows: 100-200mm；200-300mm,400-600mm,200-300m m；
S2, it takes media stock to be numbered, sieving processing is carried out to several media stock using multilayer screen cloth, obtain each
The size distribution curve of kind media stock；The multilayer screen cloth number of plies is no less than 6 layers, and from top to bottom, aperture is sequentially reduced；Wherein, most
The sieve of large aperture is about 3400 microns, and the sieve of minimum-value aperture is about 50 microns；
S3, when obtaining the sieving processing of each media stock respectively according to aforementioned particle size distribution curve, 15% and 85% can be made
The strainer dimension D that the medium of quality is detained15iAnd D85i, the number of i expression media stock；
The medium of S4, configurating filtered layer 2, the preferably particle diameter distribution of table 1；
Table 1
| Screen mesh size (μm) | It is detained the percentage of sieve | |
| Soil | <50 | < 3% |
| Fines | 50-150 | 5-30% |
| Fine grained | 150-250 | 10-30% |
| Medium fine grained | 250-500 | 40-60% |
| Coarse granule | 500-1000 | 25% |
| Pole coarse granule | 1000-2000 | 0-10% |
| Bulky grain | 2000-3400 | < 3% |
The preferably following screening conditions of the media stock of S5, transition zone 3 and drainage blanket 4:
D15(transition zone)≤5 × D85(filter layer)；
D15(drainage blanket)≤5 × D85(transition zone)
Wherein: D15Indicate the size for the strainer for being detained the medium of 15% mass；D85Expression keeps the medium of 85% mass stagnant
The size of the strainer stayed；
S6, it selects at least one as corresponding drainage blanket 4 in the media stock for meeting drainage blanket 4, carries out drainage blanket 4
Filling；
S7, select at least one as corresponding transition zone 3 in the media stock for meeting transition zone 3, to carry out transition
Layer 3 is filled；Slow release carbon source and complex microorganism preparations are added in 3 filler of transition zone or by complex microorganism preparations, slow
The property released carbon source and the multilayer embedded particles of chitosan preparation.Multilayer embedded particles preparation method is by microorganism formulation and sustained release
Property carbon source mixes, and multilayer embedded particles are made in outer layer covers chitosan；Aforementioned slow release carbon source is the jade that particle is made
Meter Xin, rice husk, sawdust or stalk；Complex microorganism preparations are using pottery luer microbial inoculum, bacillus subtilis microbial inoculum and/or false unit cell
Microbial inoculum is uniformly mixed, the quality of slow release carbon source, microorganism formulation and chitosan when using three kinds of microbial inoculums by 3:2:1
Than being respectively 500:1:10, multilayer embedded particles dosage is in every cubic metre of 300~500g.
In S8, filter layer 2, from 0~100mm depth addition of the upper surface under for the fertilizer of plant growth；Every 100m2
0~82kg is added in the filler of surface area for the fertilizer of plant growth；In the fertilizer for plant growth containing as follows at
Point: animal organic manure 61%, calcium superphosphate 2.4%, magnesium sulfate 3.7%, potassium sulfate 2.4%, microelement 1.2%, nitrogen phosphorus
Potash fertilizer 4.9%, quick lime 24.4%；2 filler middle layer of filter layer addition absorption particle, preferably active carbon and zeroth order iron mixture,
Or zeolite and zeroth order iron mixture；The two mass ratio is 5:1, and mixture quality is the 3%~5% of filter layer packing quality,
Complete the building of rainwater biology delaying basin.
Embodiment 1
By certain urban road, 5m is established2Rainfall runoff of the small-sized biological delaying basin with filtration, purification from two sides road,
Heel row is purified to storm sewer.Wherein: delaying basin overall height 1m, 1 height 200mm of retention layer, filtering layer height are 400mm,
Transition layer height is 300mm, and draining layer height is 100mm, maximum infiltration rate no more than 360mm/hr, content of chemical substances and
Particle diameter distribution property meets the requirements parameter；Wherein, increase 3kg organic fertilizer in 0~100mm filler of filter layer, for planting
Object growth survival；Filter layer adds active carbon and zeroth order iron mixture 70kg；Transition zone addition complex microorganism embedded particles are filled out
Expect 36kg.After the facility operation is stablized, to 5 continuous natural precipitation event test purification front and back main pollutions of rainfall runoff
Object carries out test analysis, and as in Figure 3-5, major pollutants removal efficiency is respectively TSS > 99%, TN > 75%, TP > 70%,
See Table 2 for details for data.
Table 2
Embodiment 2
300m is established in certain park2Macro-organism delaying basin, the rainwater diameter that purification periphery greenery patches, road, parking lot are collected
Stream, while cross flow runoff in peripheral cell part is mixed in water inlet, it is discharged into river after purification.Wherein: delaying basin overall height
1.35m, 1 height 250mm of retention layer, filtering layer height are 600mm, and transition layer height is 300mm, and draining layer height is 200mm,
Maximum infiltration rate is no more than 500mm/hr, content of chemical substances and particle diameter distribution property meet it is contained in text require parameter,
Wherein, uniformly increase 100kg organic fertilizer in 0~100mm filler of filter layer；Filter layer adds zeolite and Zero-valent Iron mixing
Object 1000kg；Transition zone adds complex microorganism embedded particles filler 100kg.After the facility operation is stablized, to 12 rainfalls
The main pollutant in event system water inlet front and back carries out test analysis, and as shown in figs 6-8, major pollutants removal efficiency is respectively
TSS > 99%, TN > 70%, TP > 70%, see Table 3 for details for data.
Table 3
Embodiment 3
In certain large parking lot, 20m is established2The biological delaying basin of purification, for purifying the diameter collected from parking lot
Stream, is discharged into landscape pond after purification.Wherein: delaying basin overall height 1.2m, 1 height 300mm of retention layer, filtering layer height are
500mm, transition layer height are 300mm, and draining layer height is 100mm, and maximum infiltration rate is no more than 500mm/hr, chemical substance
Content and particle diameter distribution property meet it is contained in text require parameter, wherein in 0~100mm filler increase 12kg organic fertilizer
Material；Filter layer adds active carbon and zeroth order iron mixture 200kg；Transition zone adds complex microorganism embedded particles filler 100kg.
After the facility operation is stablized, 6 main pollutants of continuous natural precipitation event test purification front and back rainfall runoff are carried out
Test analysis, as shown in figs. 9-11, major pollutants removal efficiency is respectively TSS > 99%, TN > 75%, TP > 70%, and data are detailed
It is shown in Table 4.
Table 4
Rainwater biology delaying basin described in the utility model, increases the setting for flooding layer, on the one hand, nitrifies anti-nitre to increase
Change the effect of reaction provides anaerobic environment, enhances system denitrogenation dephosphorizing；On the other hand, the functional plant to be grown in system
Object provides water source, guarantees demand of the drought period to water.Meanwhile there is inherent connection between biological each layer filler of delaying basin,
And there is specific size distribution profile for filler, be refined to the percentage of medium within the scope of different-grain diameter；While it further provides that
The infiltration coefficient of the concrete content of chemical substance, the range of pH value and medium in medium ensure that system is long-term, stablizes
Operation.In addition, strengthening compound filler mixed active charcoal or zeolite, Zero-valent Iron, natural organic carbon source and complex microorganism system
Agent etc. guarantees that biological delaying basin can efficiently handle the polluter in rainwater, especially to removal solid suspension, denitrogenation
Dephosphorization has significant effect.
It is confirmed according to test result, the biological delaying basin of the utility model is to Introduced cases face source Runoff contaminants removal effect
Obviously.
It is described in the utility model to have the rainwater biology delaying basin for flooding layer, it can be effectively reduced rainfall runoff peak value and body
Product, dispersion short-time storm collects water flow, and improves the treatment effeciency to input runoff, and enhancing physics processing capacity (make by absorption
With), chemical processability (redox reaction), biological treatment capabilities (microbial biochemical reaction) improve denitrogenation dephosphorizing efficiency；
Meanwhile suspended matter, heavy metal, organic matter, pathogen, hydrocarbon and some micro quantity organic pollutants are effectively removed, it purifies
Runoff rainwater realizes the reuse of water；Since the effect of plant increases bio-diversity, Landscape benefit is provided, and improve and work as
The microcosmic weather in ground reduces tropical island effect.Since system can keep good service performance for a long time, therefore maintenance cost can be reduced,
And it can realize produced modularization in batches.
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 (8)
1. a kind of be detained pool structure with the rainwater biology for flooding layer, which is characterized in that successively set from top to bottom in the delaying basin
Be set to: retention layer (1), filter layer (2), transition zone (3) and drainage blanket (4), foregoing transition layer (3) and drainage blanket (4), which are used as, to be flooded
No layer (5), the height for flooding layer (5) realize that aforementioned collector pipe (10) is divided by the water outlet height setting of collector pipe (10)
Two parts, a part are located in drainage blanket (4), and another part is located at outside pond body；The end of collector pipe (10) is connected to rainwater
It collects well (11), the rainwater saved is collected in rain collection well (11) and extracts reuse by water pump (13).
2. according to claim 1 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that collector pipe (10)
Pipeline in drainage blanket (4) uses perforated pipe, and the pipeline outside pond body uses not perforated pipe.
3. according to claim 2 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that described catchments
Pipe (10) water outlet, that is, not perforated pipe end height and the upper surface for flooding layer (5) are mutually neat.
4. according to claim 3 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that collector pipe (10)
Pipeline in drainage blanket (4) is straight pipe, and end connects blow valve (14) after stretching out drainage blanket, the rear portion of straight pipe,
The upper surface of rain collection well (11) is connected on the front collector pipe (10) of blow valve (14) by bend pipe.
5. according to claim 1 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that retention layer (1)
The delaying basin side wall of top is equipped with the first overflow port (9), and first overflow port (9) passes through piping connection to municipal rain pipe
Net；The second overflow port (12) are arranged in the side wall of rain collection well (11), and aforementioned second overflow port (12) passes through piping connection to city
Political affairs Storm Sewer Network.
6. according to claim 5 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that the second overflow port
(12) lower surface is not higher than the upper surface for flooding layer (5).
7. according to claim 1 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that retention layer (1)
Height is 200-300mm；Filter layer (2) is highly 400-600mm；Transition zone (3) is highly 200-300mm；Drainage blanket (4) is high
Degree is 100-200mm.
8. according to claim 7 be detained pool structure with the rainwater biology for flooding layer, which is characterized in that filter layer (2)
From 0~100mm depth addition of the upper surface under for the fertilizer of plant growth.
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| CN201821216523.XU CN208791293U (en) | 2018-07-30 | 2018-07-30 | It is a kind of to be detained pool structure with the rainwater biology for flooding layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331041A (en) * | 2021-06-21 | 2021-09-03 | 上海应用技术大学 | Biological detention pond with multiple view effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331041A (en) * | 2021-06-21 | 2021-09-03 | 上海应用技术大学 | Biological detention pond with multiple view effect |
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