CN104671423B - A kind of sector multidimensional cross-current type is combined terrestrial plant buffer strip and its construction method - Google Patents

A kind of sector multidimensional cross-current type is combined terrestrial plant buffer strip and its construction method Download PDF

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Publication number
CN104671423B
CN104671423B CN201510103809.1A CN201510103809A CN104671423B CN 104671423 B CN104671423 B CN 104671423B CN 201510103809 A CN201510103809 A CN 201510103809A CN 104671423 B CN104671423 B CN 104671423B
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sector
band
fan
buffer strip
laterally
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CN104671423A (en
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王毅力
斯豪文
胡威
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Beijing Forestry University
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Beijing Forestry University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007Contaminated open waterways, rivers, lakes or ponds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/20Prevention of biofouling
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The present invention relates to a kind of sector multidimensional cross-current type is combined terrestrial plant buffer strip and its construction method, the buffer strip laterally streams enriching pollutants filling straw cord, fan-shaped longitudinal direction stream dephosphorization band by fan-shaped horizontal stream herb biology charcoal band, fan-shaped longitudinal direction flow denitrification band, sector, sector laterally streams Qiao's grass charcoal band and the necessary low bank of earth between fields, braiding channel or permeable wall are composed in series.The sewage of low concentration such as the tail water of municipal sewage plant, agricultural wastewater, villages and small towns rainwash flow successively through above-mentioned band after simple precipitation, and suspended material in sewage, organic matter, nutrient, agricultural chemicals etc. occur progressively to cut down.The vegetation buffer strip is applied to around the limited reservoir of bank land surface, river or lake, can effectively prevent water environment pollution;The coordination combination of autochthonous flora, not only high treating effect but also with good landscape effect, ecological benefits and application value.

Description

A kind of sector multidimensional cross-current type is combined terrestrial plant buffer strip and its construction method
Technical field
The invention belongs to water pollution control and ecological restoration technical field, and in particular to a kind of sector multidimensional cross-current type is combined Terrestrial plant buffer strip and its construction method.
Background technology
Land inland water ecotone can intercept entrance lake, reservoir, river etc. as a kind of ecological engineering unit of protection water body Suspension in waters, removal nitrogen and phosphorus element, degrading pesticide, it is ensured that the quality of water environment.Meanwhile, land inland water ecotone is also Region nutrient management, soil erosion control and the important component part for protecting freshwater resources environment, which is between the ecosystem of land and water Material circulation, energy flow, information transmission and biological stream play the effect of important gallery, filter and barrier, right The stable development of local ecosystem plays very important effect.However, with the aggravation of water body extraneous contamination degree, single Land inland water ecotone be difficult to tackle this pollution for processing load more than which.How this kind of asking is solved with a kind of new method Topic, it has also become the trend of vegetation buffer strip development.
The Chinese patent application of Publication No. CN101555071B discloses a kind of using buffer strip control Plain tidal river The method of entoilage area widespread pollution from the overuse of fertilizers and pesticides in rural area, patent application mainly include:Select buffer strip areas, buffer strip edit, setting Buffer strip water distribution system, buffer strip plant are chosen and are imported with plantation and buffer strip water source.The patent describe a kind of using life The method that state engineering philosophy removes Riparian Zone widespread pollution from the overuse of fertilizers and pesticides in rural area, it is adaptable to river network in plain areas, but due to by areal type and The impact of water body type, so larger with the limitation of the method.
The Chinese patent application of Publication No. CN102249416A discloses a kind of method of loke shore buffer strip ecological reconstruction, Totally it is divided into 5 steps, i.e.,:Substrate is drawn the line, removes and transform, is arranged and is collected ditch and water distribution ditch, ecological permeable purification is set Band, determination build technique.The method fundamentally describes the macro-plan method for building loke shore buffer strip, while also highlighting The thought of ecological protection is taken into account while loke shore environment is protected.But there is also following defect:Patent is mainly using plant Water plant and species is single;The current to polluting water are not designed, and systemic-function subregion is indefinite, interception result and energy Power is not enough.
Additionally, there is problems with foregoing invention and correlative study:
1) using bank buffer strip (land inland water ecotone) as unique barrier of water protection, do not account in buffer strip periphery Set up terrestrial vegetation buffer strip;
2) for the limited problem of water body bank land surface, the design on shape in buffer strip, streamflow regime is not filled Point;
3) conventional buffer strip mainly completes pollution by the physical chemistry and biological chemistry action of matrix fill and plant The removal of thing, fails clearly to mark off the remove function region of different pollutants in structure, and contaminant removal capacity can not be filled Distribution is waved.
4) conventional buffer strip payes attention to its pollution reduction function, shorter mention bio-diversity conservation and the aesthetic of landscape mostly Etc. function.
Therefore, a kind of simple structure of invention, floor space are less, can be according to the landform dough mixing machine spirit on water body periphery land Laying living and operation are while it is very necessary to take into account the aesthetic of landscape and the compound terrestrial vegetation buffer strip of bio-diversity conservation.
Content of the invention
In the case of above-mentioned existing method consideration deficiency, the present invention provides a kind of sector multidimensional cross-current type and is combined terrestrial Plant buffer strip and its construction method, this method have compact conformation, construction method unique, to sewage of low concentration treatment effect Good, while taking into account the feature of the aesthetic of landscape and bio-diversity conservation.
For the purpose of the present invention is realized, a kind of method of protection land inland water ecotone is provided, the present invention includes that following order is walked Suddenly:
1)Water after simple precipitation is introduced fan-shaped laterally stream draft-charcoal band, removes the suspended material in sewage With partial solubility organic matter;
2)Fan-shaped longitudinal direction flow denitrification band, Main Function are entered by the water outlet after the draft-charcoal tape handling of fan-shaped laterally stream It is denitrogenation;
3)Sector is entered by the water outlet after denitrogenation tape handling enriching pollutants filling straw cord is laterally streamed, absorb or degraded water The pollutants such as middle remaining organic matter, agricultural chemicals;
4)The water outlet after straw cord is processed will be filled fan-shaped longitudinal direction stream dephosphorization band is introduced, complete physical chemistry of the filler to P elements Suction-operated;
5)The water outlet inflow sector of dephosphorization band is made laterally to stream tall grass-charcoal band.
Wherein, water is unpowered flowing in the ground line gradient of 1 ° -5 ° in pre-existing topography physical features or after manual sorting.
Wherein, each processing region is composed in series by the low bank of earth between fields, braiding channel, permeable wall.
Especially, the low bank of earth between fields refers to that the soil compaction for being higher by each processing region 10-20cm is constituted.
Particularly, braiding channel size:Width be 20-50cm, depth be 10-30cm, length depending on landform, braiding channel Material is cobble, gravel or marble.
Especially, permeable wall size:Width be 10-20cm, depth be 10-30cm, length depending on landform, permeable wall Material is the less cobble of particle diameter or gravel.
Wherein, step 1)In herbaceous plant be Bermuda, Festuca Arundinacea, spend clover, one kind of dewdrop grass or combination in vain.
Particularly, in soil, soil is 0.4-0.8 with the ratio of charcoal:0.6-0.2.
Especially, water inlet is to enter laterally stream draft-charcoal band by screen pack, and the size of screen pack regards actual conditions Depending on.
Particularly, the periphery of fan-shaped laterally stream draft-charcoal band is surrounded by the low bank of earth between fields.
Wherein, step 2)Described in denitrogenation filler be followed successively by gravel, zeolite from down to up, surface mulching soil be 10- 20cm.
Particularly, the grain size of gravel 30mm-50mm, depth of cracking closure are 20cm-30cm.
Especially, the sized zeolite particles 10mm-30mm, depth of cracking closure are 20cm-30cm.
Wherein, step 3)Described in shrub be a mao leaf cloves, prunus cerasifera, Ligustrum quihoui, one kind of camellia or combination, woods Lower draft is based on nature, it is not necessary to artificial growth.
Particularly, the sector is laterally streamed enriching pollutants and fills the low bank of earth between fields of the straw cord for longitudinal arrangement, the head and the tail of the low bank of earth between fields according to Secondary leave the notch flow through for current, shrub plants the region on the low bank of earth between fields, and current are streamed between the low bank of earth between fields.
Especially, the low bank of earth between fields length of the longitudinal arrangement is 5-15m, and width is 30-50cm, is highly 10-20cm, notch Width be 10-20cm.
Wherein, step 4)Described in filler be followed successively by cobble, slag, haydite from down to up.
Particularly, the cobble particle diameter 30mm-50mm, depth of cracking closure are 10cm-20cm.
Especially, the slag particle diameter 10mm-30mm, depth of cracking closure are 10cm-10cm.
Particularly, the waterworks sludge depth of cracking closure is 10cm-20cm.
Especially, described filler layer length is 5m-10m.
Wherein, step 5)Described in arbor wood be smalt tree, weeping willow, Salix cavaleriei, one kind of taxodium ascendens or combination, sylvan life draft Based on nature, it is not necessary to artificial growth.
Particularly, the sector laterally streams the low bank of earth between fields of the tall grass-charcoal band for longitudinal arrangement, and the head and the tail of the low bank of earth between fields are stayed successively There is the notch flow through for current, arbor plants the region on the low bank of earth between fields, current are streamed between the low bank of earth between fields.
Especially, the low bank of earth between fields length of the longitudinal arrangement is 10-25m, and width is 50-80cm, is highly 20-50cm, groove The width of mouth is 20-30cm.
A kind of sector multidimensional cross-current type of the present invention is combined terrestrial plant buffer strip and its construction method, at present to this land and water The research of the vegetation buffer strip of ecotone periphery is clear and perfect not enough, compared with many existing land buffer strip technology, tool Have the following advantages and effect:
1) multistage interception barrier thinking of the present invention based on pollutant, arranges terrestrial vegetation in the periphery of land inland water ecotone Buffer strip, enters the first order interception unit of water body as contaminant water, mitigates the pollutional load of follow-up land inland water ecotone, ensures which The reduction of pollution interception result.
2) the terrestrial plant buffer strip of the present invention sufficiently can be utilized using fan-shaped multidimensional structure, current cross-current flow The limited land surface in bank, extends hydraulic detention time.
3) the terrestrial plant buffer strip of the present invention has the subregion of pollutant removal definite functions, by combining tall filling grass Plant and functional stuffing, effectively remove various pollutants in sewage.
4) present invention is planted according to fan-shaped landform using terrestrial plant, and species are abundant, thing is mutually various, landscape effect and life State benefit is obvious.
5) when carbon of the present invention in design removal contaminant water, nitrogen, P elements, it is considered to which low-pollution water processes later stage denitrogenation When the not enough problem of carbon source, so denitrogenation is placed on early stage carrying out, and suitably increase carbon source using charcoal band.
6) the inventive method simple structure, floor space are less, can according to the water body periphery landform on land and area, Flexibly lay and run, with good application value.
Description of the drawings
Fig. 1 is the structural representation that fan-shaped multidimensional cross-current type is combined terrestrial plant buffer strip.
Description of reference numerals:
1. screen pack;2. the low bank of earth between fields;3. sector laterally flows draft-charcoal band;4. braiding channel;5. permeable wall;6. fan-shaped Longitudinal flow denitrification band;7. sector laterally streams enriching pollutants filling straw cord;8. dephosphorization band is flowed in fan-shaped longitudinal direction;9. fan-shaped horizontal Stream tall grass-charcoal band.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment premised in the process of the present invention under carry out reality Apply, detailed embodiment and specific operating process is given, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1:
Fan-shaped multidimensional cross-current type is built on the land on certain lakeside bank and terrestrial plant buffer strip is combined, concrete structure parameter is such as Under:
Agricultural run-off is introduced in the system, water inlet and each index of water outlet are as follows:
Wherein, except TN is not up to earth's surfaceOutside the standard of class water, remaining indices all reaches earth's surfaceThe standard of class water. As a result prove that this method can effectively mitigate the pollutional load that low-pollution water enters land inland water ecotone.After 1 year, to region botanizing It was found that the region is not in the case of introducing a fine variety, increase by 7 kinds of herbaceous plant, and the visual experience of area peripheral edge also has very big carrying Rise, illustrate that the method brings the effect in front to bio-diversity conservation and the aesthetic of landscape.
Embodiment 2:
Fan-shaped multidimensional cross-current type is built on the land on certain river bank and terrestrial plant buffer strip is combined, concrete structure parameter is such as Under:
The tail water of municipal sewage plant is introduced in the system, water inlet and each index of water outlet are as follows:
Testing index SS(mg/L) CODCr(mg/L) NH4 +-N(mg/L) TP(mg/L) TN(mg/L)
Water inlet 216 48 6.9 0.6 16
Water outlet 49 41 2.6 0.3 7.1
Clearance(%) 87.4 14.6 62.4 50.0 55.7
Wherein, except TN index is not up to earth's surfaceOutside the standard of class water, remaining indices basically reaches earth's surfaceClass water Standard.As a result prove that this method can effectively mitigate the pollutional load that low-pollution water enters land inland water ecotone.After 1 year, region is planted Thing investigation finds that the region, in the case of not introducing a fine variety, increases by 12 kinds of herbaceous plant, and the visual experience of area peripheral edge also has Very big lifting, illustrates that the method brings the effect in front to bio-diversity conservation and the aesthetic of landscape.
Embodiment 3:
Fan-shaped multidimensional cross-current type is built on the land on certain reservoir bank and terrestrial plant buffer strip is combined, concrete structure parameter is such as Under:
The agricultural wastewater of low concentration is introduced in the system, water inlet and each index of water outlet are as follows:
TN is below standard outer, and remaining indices basically reaches earth's surfaceThe standard of class water.As a result prove that this method can be effective Mitigate the pollutional load that low-pollution water enters land inland water ecotone.
Embodiment 4:
Fan-shaped multidimensional cross-current type is built on the land on certain reservoir bank and terrestrial plant buffer strip is combined, concrete structure parameter is such as Under:
Villages and small towns rainwash and ditch water in a canal are introduced in the system, water inlet and each index of water outlet are as follows:
TN removal effect is general, and remaining indices basically reaches earth's surfaceThe standard of class water, SS removal effect are fine.Knot Fruit proves that this method can effectively mitigate the pollutional load that low-pollution water enters land inland water ecotone.

Claims (9)

1. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip, it is characterised in that described method bag Include following steps:
1) fan-shaped laterally stream draft-charcoal band, fan-shaped longitudinal direction flow denitrification band, sector are laterally streamed enriching pollutants and fill grass Band, fan-shaped longitudinal direction stream dephosphorization band and sector are laterally streamed tall grass-charcoal band and pass sequentially through the low bank of earth between fields, braiding channel, permeable wall and carry out Series connection, the wherein foundation slope of this 5 kinds of bands are 1 ° -5 °, and sector structure angle is 30 ° -120 °, to expand the cross-section of river, subtracts Slow water inlet flow velocity, improves hydraulic detention time;
2) the peripheral land that terrestrial plant buffer strip is arranged on land inland water ecotone, municipal sewage are combined fan-shaped multidimensional cross-current type The tail water for the treatment of plant, agricultural run-off, villages and small towns rainwash and ditch water in a canal flow successively through fan-shaped laterally stream draft-charcoal band, fan Shape longitudinal direction flow denitrification band, sector are laterally streamed enriching pollutants filling straw cord, fan-shaped longitudinal direction stream dephosphorization band, sector and laterally stream Qiao Grass-charcoal band, carries out the reduction of suspension, organic matter, nutrient, heavy metal and agricultural chemicals.
2. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip as claimed in claim 1, and its feature exists In:Fan-shaped laterally stream draft-charcoal band length-width ratio is more than 3-5, and width is 10-15m;Its water inlet is arranged on low bank of earth between fields edge, Width is 20-40cm, is highly 100-200mm.
3. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip as claimed in claim 2, wherein fan-shaped Laterally herbaceous plant planted by stream draft-charcoal band, and coverage is 30%-80%, soil and charcoal in the 10-20cm soil of top layer Ratio is 0.4-0.8:0.6-0.2.
4. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip as claimed in claim 1, and its feature exists In:Fan-shaped longitudinal direction flow denitrification band is made up of braiding channel, permeable wall and packing belt;Wherein braiding channel size:Width is 20-50cm, Depth is 10-30cm;Permeable wall size:Width be 10-20cm, depth be 10-30cm, filler be followed successively by from down to up gravel, Zeolite, surface mulching soil are 10-20cm, and class herbaceous plant is viewed and admired in plantation, and coverage is 30%-60%.
5. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip as claimed in claim 1, and its feature exists In:Sector is laterally streamed enriching pollutants and fills straw cord;The structure of the filling straw cord is:The low bank of earth between fields of longitudinal arrangement, the head and the tail of the low bank of earth between fields according to Secondary leave the notch flow through for current, above the low bank of earth between fields transplant shrub;The size of the filling straw cord is:Low bank of earth between fields length is 5-15m, width For 30-50cm, it is highly 10-20cm, the width of notch is 10-20cm, plants shrub;The species of wherein shrub is:Mao Yeding Perfume, prunus cerasifera, Ligustrum quihoui, camellia, the combination of little leaf boxwood.
6. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip as claimed in claim 1, and its feature exists In:Fan-shaped longitudinal direction stream dephosphorization band structure is made up of braiding channel, permeable wall and packing belt;Filler is followed successively by cobble, steel from down to up Slag, waterworks sludge.
7. a kind of sector multidimensional cross-current type is combined the construction method of terrestrial plant buffer strip as claimed in claim 1, and its feature exists In:Sector laterally streams tall grass-charcoal band;The structure of the tall grass-charcoal band is:The low bank of earth between fields of longitudinal arrangement, the head of the low bank of earth between fields Tail leaves the notch flow through for current successively, plants arbor above the low bank of earth between fields;The size of the tree zone is:Low bank of earth between fields length is 10- 25m, width are 50-80cm, are highly 20-50cm, and the width of notch is 20-30cm;Plantation arbor;The species of wherein arbor For:Smalt tree, weeping willow, Salix cavaleriei, the combination of taxodium ascendens.
8. as described in 3,4,5,7 any one of claim, a kind of sector multidimensional cross-current type is combined the structure side of terrestrial plant buffer strip Method, it is characterised in that:The herbaceous plant is Bermuda, Festuca Arundinacea, spends the combination of clover, dewdrop grass in vain.
9. a kind of sector multidimensional cross-current type is combined terrestrial plant buffer strip, including being connected by the low bank of earth between fields, braiding channel, permeable wall Sector laterally stream draft-charcoal band, fan-shaped longitudinal direction flow denitrification band, sector are laterally streamed enriching pollutants and fill straw cord, sector Longitudinal direction stream dephosphorization band and sector laterally stream tall grass-charcoal tape handling band, and the foundation slope of this 5 kinds of bands is 1 ° -5 °, fan Shape structural point is 30 ° -120 °;In tail water, agricultural run-off, villages and small towns rainwash and ditch water in a canal to municipal sewage plant Suspension, organic matter, nutrient, heavy metal and agricultural chemicals are removed.
CN201510103809.1A 2015-03-10 2015-03-10 A kind of sector multidimensional cross-current type is combined terrestrial plant buffer strip and its construction method Expired - Fee Related CN104671423B (en)

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