CN109607798A - A kind of highway sewage staged hybrid constructed wetland processing method - Google Patents
A kind of highway sewage staged hybrid constructed wetland processing method Download PDFInfo
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- CN109607798A CN109607798A CN201811549086.8A CN201811549086A CN109607798A CN 109607798 A CN109607798 A CN 109607798A CN 201811549086 A CN201811549086 A CN 201811549086A CN 109607798 A CN109607798 A CN 109607798A
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- sewage
- reaction tank
- artificial swamp
- highway
- swamp reaction
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
Abstract
A kind of highway sewage staged hybrid constructed wetland processing method, sewage is by the multistage abundant reoxygenation of ladder that drops, and aerobic microbiological mass propagation is to organic compounds such as COD in efficient degradation sewage；Then pass through the sedimentation of setting pot, most of inorganic particle is deposited in bottom of pond, lightens the load for the further purification of subsequent sewage；By the absorption degradation of two-stage artificial swamp reaction tank, sewage can reach discharge standard.Method of the invention, which can increase, collects treatment effeciency along highway rain sewage, it is drained using topography height difference, the synergistic effect for the processes such as entire pollutant process is retained by aeration biochemical degradation, physical filtering, plant growth adsorbs, so that highway sewage pollution be controlled.
Description
Technical field
The present invention relates to small watershed Ides On Prevention And Control of Regional Pollution and rain sewage treatment field more particularly to a kind of highway sewage
Processing method.
Background technique
As China's expressway construction is developed rapidly, more and more highways pass through farmland, water source and protect
Protect area, natural water etc..And dust on the roads, transport projected object, greasy dirt etc. that freeway traffic transportational process generates, contain
A large amount of hydrocarbons, heavy metal and fuel additive, COD, BOD isoconcentration are higher than " integrated wastewater discharge mark in many areas
It is quasi- " limit value, if collection is handled not in time, for a long time to soil and natural water with serious pollution.Highway pavement
Runoff pollution is a kind of important non-point pollution, is extended linearly along highway, different from sanitary sewage, and pollution is more dispersed,
Sewage not can be carried out full section centralized processing.To solve the above problems, relevant department builds in Expressway Service and charge station
Rainwater treatment station, including delaying basin, oxidation pond etc. control rainwater runoff pollution, but this kind of method is lacked there are following
Fall into: 1, can only small range sewage is handled, have ignored the rain effluent problem of long range Highways '；2, such sewage treatment
Pond can not effectively supply oxygen, and COD, nitrogen phosphorus in sewage etc. can not effectively degrade, seriously polluted to farmland breeding water body etc.；3, such
Processing method needs professional to manage, and takes up a large area, and investment is big.
Summary of the invention
Above-mentioned measure there are aiming at the problem that, it is an object of that present invention to provide a kind of highway sewage staged combine people
Work wet land treating method.This method is drained rain sewage using topography height difference, can concentrate sewage segmentation along highway
Processing realizes the sewerage ecologicalization processing along highway in the case where not adding chemical agent, without secondary pollution to ask
Topic.
To achieve the goals above, the present invention uses following technical scheme.
A kind of highway sewage staged hybrid constructed wetland processing method, includes the following steps:
(a) multistage drop ladder is set on highway slope protection, keeps sewage upper out-of-date abundant from multistage drop ladder
Reoxygenation, the organic compounds such as COD in sewage of degrading；
(b) setting pot is set, the sewage for flowing through multistage drop ladder is introduced into progress inorganic particle sedimentation in setting pot；
(c) artificial swamp reaction tank is set, will be introduced into artificial swamp reaction tank, pass through from the sewage flowed out in setting pot
Plant absorption, microbiological deterioration purify sewage further.
Further, the multistage drop ladder is connected with express highway pavement drainpipe, brickwork construction, sand finish,
The ladder sum of series gradient is determined according to the length and the gradient of highway slope protection.Drop ladder both sides renovation waterwall, prevents dirt
Water is overflowed from ladder both sides.
Further, the setting pot is horizontal flow type grit chamber.Setting pot be concrete Semi-seal structure, sand finish,
Setting pot surrounding carries out Anti-seeping technology.Oil removal sewage blocking plate is set in pond, using gravity by floating zonal isolation, while intercepting floating
Rubbish incidental.Rain sewage maximum flow rate in pond is 0.3m/s, with reference to 30~60s of residence time；Available depth using 0.25~
1.0m；Setting pot width is not less than 0.6m.
Further, the artificial swamp reaction tank includes that first order artificial swamp reaction tank and second level artificial swamp are anti-
Ying Chi will be introduced into people's first order artificial swamp reaction tank from the sewage flowed out in setting pot, then will be from first order artificial swamp
The sewage of reaction tank outflow is introduced into the artificial swamp reaction tank of the second level.
Still further, the artificial swamp reaction tank according to water (flow) direction select surface current artificial wetland, brick mix structure,
The setting of bottom of pond bottom is not less than the C10 concrete cushion of 100mm thickness, and surface current artificial wetland relies on surface materials, root system of plant
Interception, the absorption of biomembrane is by water body purification.According to Design of Constructed Wetland specification, intake control COD≤200mg/L, SS≤
80mg/L, occupied area estimate that length-width ratio controls between 3:1~5:1 by most torrential rain amount, available depth 0.3~
0.5m, outlet pipe are arranged on wetland effective height.Matrix makees wetland packing material, provides the life of wetland plant and microorganism
It is long, while having filtering, absorption to pollutant, it mainly include soil, sand, gravel, shale, lime stone etc..To have filler
There is a good water penetration, filler wetland porosity not preferably less than 0.3 after mounting.Artificial swamp apolegamy plant should have root system hair
It reaches, the features such as oxygen carrying capacity is strong, resistant outlet capacity is strong, the plant of Chang Xuan has reed, cattail, wild rice stem, canna etc..Arrange two-stage
Rain sewage can be carried out deep purifying, while have certain pondage capacity by wastewater treatment pond, occurred promptly
When accident is revealed in traffic, the emergent management for dangerous material pollutant gains time and space.
Further, the multistage drop ladder, horizontal flow type grit chamber, first order artificial swamp reaction tank and the second level
The relative altitude of artificial swamp reaction tank successively reduces, enable sewage flow successively through under the effect of gravity multistage drop ladder,
Horizontal flow type grit chamber, first order artificial swamp reaction tank and second level artificial swamp reaction tank.
The principle of above method processing sewage: express highway pavement sewage leads to multistage drop ladder by drainpipe, leads to
It is sufficiently contacted with oxygen for excessively high official post, and the aerobic microbiological in sewage is able to better growth and breeding, to effectively reduce
The substances such as COD, BOD, nitrogen phosphorus.A large amount of organic pollution materials are eliminated by the sewage that staged drop water aeration is handled, are entered
In setting pot, since discharge area increases, sediment transport capacity is reduced, and insoluble impurities particle is able to be deposited in setting pot bottom,
Setting pot periodically carries out manual cleaning.In addition, arrange oil baffle in setting pot, using gravity by a small amount of greasy dirt of highway pavement
It separates with sewage, while the rubbish incidental of floating can also be filtered, prevent from blocking.It is artificial that setting pot outlet pipe connects a two-stage
Wetland reaction tank kind is implanted with the hygrophytes such as cattail, calamus, the warbler tail of stronger detergent power in pond.Sewage flows through matrix and plant
Object underwater portion, by the conversion of microorganism, absorption, the sedimentation of plant carry out catabolism, and two-stage Manual moist to pollutant
The filtering on ground has stronger clean-up effect to sewage.
According to the above method, it can be deduced that a kind of highway sewage staged hybrid constructed wetland processing system, it is wrapped
Include multistage drop ladder, horizontal flow type grit chamber, first order artificial swamp reaction tank and second level artificial swamp reaction tank；Multistage is fallen
Water ladder is arranged by highway, and multistage drop ladder connects horizontal flow type grit chamber, and horizontal flow type grit chamber connects first order people
Work wetland reaction tank, first order artificial swamp reaction tank connect second level artificial swamp reaction tank；Multistage drop ladder, flat flow
The relative altitude of setting pot, first order artificial swamp reaction tank and second level artificial swamp reaction tank successively reduces.Drop ladder
Changed using the height difference of landform, makes sufficiently to react with oxygen by the multistage sewage for dropping ladder aeration, aerobic microbiological can
Fast-growth breeding, to effectively be degraded to COD, ammonia nitrogen in sewage etc..Highway surface runoff water, change of water quality
Larger, the sedimentation of setting pot preferably controls rainwater runoff pollution.By the sedimentation of setting pot, suspend insoluble granule in sewage
Impurity is deposited in bottom of pond, lightens the load for the processing of subsequent artefacts' wetland purification, and have certain water balance ability.Two-stage people
Work wetland has precipitating, filtration, the effect adsorbed, absorbed by the root system biomembrane of wetland plant, the solubility in sewage
Organic matter is decomposed removal, thus by highway minimizing of rainwater runoff pollution.
The solution have the advantages that: 1, it using this highway sewage staged hybrid constructed wetland processing method can
Rain sewage along highway is collected processing；2, it is drained by topography height difference, without increasing power device；3, by heavy
Drop, plant absorption, microorganism decomposition bottom sewage are handled, and entire treatment process does not add chemical agent, does not generate secondary dirt
Dye, more environmentally-friendly energy conservation；4, design structure is simple, and maintenance management is not necessarily to ad hoc personnel, and investment operating cost is low；5, artificial swamp
There is certain landscape effect.
Detailed description of the invention
Fig. 1 is a kind of agent structure schematic diagram of highway sewage disposal system of the invention.
Fig. 2 is the schematic diagram of setting pot of the invention；
Fig. 3 is the schematic diagram of artificial swamp reaction tank of the invention.
In figure: 1, multistage drop ladder；2, setting pot；3, artificial swamp reaction tank；2-1, setting pot water inlet；2-2, it sinks
Sha Chi advection area；2-3, setting pot decanting zone；2-4, setting pot water outlet；2-5 setting pot oil removal sewage blocking plate；3-1, artificial swamp
Water inlet；3-2, artificial wetland effluent mouth；3-3, artificial swamp bed course；3-4, artificial swamp hypothallus.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown, highway sewage staged hybrid constructed wetland processing system is built according to the method for the present invention,
The system includes multistage drop ladder 1, setting pot 2 and two-stage artificial swamp reaction tank 3.It is public that this example chooses Jiangxi Province's high speed
Road takes 10 years one chance situations as the calculating return period.Highway is averaged width 40m, and choosing every 2km is processing section, collects rain
Area is 0.08km2.Highway Rainfall Runoff factor alpha obtains 0.9.
The multistage drop ladder 1 is connected with road surface drainage pipe, brickwork construction, sand finish, ladder quantity and gradient root
It is drafted according to the length and the gradient of highway slope protection.Four to six ladders, the ladder gradient and slope protection slope is arranged in general every meter of slope protection
It spends identical.Renovation waterwall in ladder both sides prevents sewage from overflowing from ladder both sides.The ladder that drops is changed using the height difference of landform,
Make sufficiently react with oxygen by the multistage sewage for dropping ladder aeration, aerobic microbiological can fast-growth breed, thus right
COD is effectively degraded in sewage.
2 type of setting pot is horizontal flow type grit chamber, and highway surface runoff water, change of water quality are larger, sand setting
The sedimentation in pond preferably controls rainwater runoff pollution.Setting pot be concrete Semi-seal structure, sand finish, setting pot surrounding into
Row Anti-seeping technology.Setting pot is divided into three sections, including inhalant region 2-1, advection area 2-2, decanting zone 2-3 and water outlet 2-4, inhalant region
2-1 is connect with the water outlet of multistage drop ladder 1, and the water inlet 3-1 of water outlet 2-4 and first order artificial swamp reaction tank connects
It connects；Oil removal sewage blocking plate 2-5 is set in pond, using gravity by floating zonal isolation, while intercepting the rubbish incidental of floating.Rain sewage exists
Maximum flow rate is 0.3m/s in pond, with reference to 30~60s of residence time；Available depth uses 0.25~1.0m；Setting pot width is not
Less than 0.6m.By the sedimentation of setting pot, suspension insoluble granule impurity is deposited in bottom of pond in sewage, is that subsequent artefacts' wetland is net
Change processing lightens the load, and has certain water balance ability.Pretreated sewage is settled by drop water aeration and particle,
Its COD content, SS content meet artificial swamp water inlet standard (COD≤200mg/L, SS≤80mg/L), can be arranged by water outlet 2-4
Enter artificial swamp reaction tank and does deep purifying.
The artificial swamp reaction tank 3 selects surface current artificial wetland, brick mix structure, including water inlet according to water (flow) direction
3-1, water outlet 3-2, bed course 3-3, hypothallus 3-4.The setting of bottom of pond bottom is not less than the C10 concrete cushion 3-3 of 100mm thickness,
Surface current artificial wetland relies on surface materials, the interception of root system of plant, and the absorption of biomembrane is by water body purification.According to artificial swamp
Design specification, occupied area estimate that length-width ratio controls between 3:1~5:1 by most torrential rain amount, available depth 0.3~
0.5m, outlet pipe 3-2 are arranged on wetland available depth.Hypothallus 3-4 as wetland packing material, provide wetland plant and
The growth of microorganism, while having filtering, absorption to pollutant, it mainly include soil, sand, gravel, shale, lime stone etc..
To make filler have good water penetration, wetland porosity is not less than 0.3 to filler after mounting.Artificial swamp apolegamy plant should have
Standby well developed root system, the features such as oxygen carrying capacity is strong, durability against pollution is strong, the plant of Chang Xuan has reed, cattail, wild rice stem, canna etc..Through
Calculate this example artificial swamp reaction pool area 4000m2Meet runoff requirement, takes length-width ratio 4:1, size design 100m × 40m
×1.5m.Through checking, under normal circumstances, going out water quality can reach discharge standard；In special especially big concentrated heavy rainfall weather and high speed
Highway groove tank car (20m3Left and right) topple over leakage, since the artificial swamp reaction tank is regulated and stored the depth of water equipped with 0.5m, to artificial swamp
Treatment effeciency does not impact.It arranges two-stage wastewater treatment pond, rain sewage can be subjected to deep purifying, had simultaneously
Have certain pondage capacity, occur emergency traffic leakage accident when, for dangerous material pollutant emergent management gain time and
Space.
Claims (9)
1. a kind of highway sewage staged hybrid constructed wetland processing method, includes the following steps:
(a) multistage drop ladder is set on highway slope protection, makes sewage from the upper out-of-date abundant reoxygenation of multistage drop ladder,
The organic compounds such as the COD in degradation sewage；
(b) setting pot is set, the sewage for flowing through multistage drop ladder is introduced into progress inorganic particle sedimentation in setting pot；
(c) artificial swamp reaction tank is set, will be introduced into artificial swamp reaction tank from the sewage flowed out in setting pot, pass through plant
Absorption, microbiological deterioration purify sewage further.
2. according to the method described in claim 1, it is characterized by: the multistage drop ladder and express highway pavement drainpipe
It is connected.
3. according to the method described in claim 2, it is characterized by: the multistage drop ladder both sides renovation waterwall, drop
Ladder water outlet connects setting pot water inlet.
4. according to the method described in claim 3, it is characterized by: the setting pot is horizontal flow type grit chamber, water outlet connection
Artificial swamp reaction tank.
5. according to the method described in claim 4, it is characterized by: being equipped with oil removal sewage blocking plate in the horizontal flow type grit chamber.
6. according to the method described in claim 1, it is characterized by: the artificial swamp reaction tank includes first order artificial swamp
The sewage flowed out from setting pot is introduced people's first order artificial swamp reaction tank by reaction tank and second level artificial swamp reaction tank
In, then will be introduced into the artificial swamp reaction tank of the second level from the sewage that first order artificial swamp reaction tank flows out.
7. according to the method described in claim 6, it is characterized by: the artificial swamp reaction tank plantation plant be reed,
One of cattail, wild rice stem, canna are a variety of.
8. method according to claim 6 or 7, it is characterised in that: the multistage drop ladder, horizontal flow type grit chamber, the
The relative altitude of level-one artificial swamp reaction tank and second level artificial swamp reaction tank successively reduces, and sewage is enable to make in gravity
It is anti-that multistage drop ladder, horizontal flow type grit chamber, first order artificial swamp reaction tank and second level artificial swamp are flowed successively through under
Ying Chi.
9. a kind of highway sewage staged hybrid constructed wetland processing system, it is characterised in that: including multistage drop ladder,
Horizontal flow type grit chamber, first order artificial swamp reaction tank and second level artificial swamp reaction tank；Multistage drop ladder is arranged in height
Fast road, multistage drop ladder connect horizontal flow type grit chamber, and horizontal flow type grit chamber connects first order artificial swamp reaction tank, the
Level-one artificial swamp reaction tank connects second level artificial swamp reaction tank；Multistage drop ladder, horizontal flow type grit chamber, first order people
The relative altitude of work wetland reaction tank and second level artificial swamp reaction tank successively reduces.
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| CN201811549086.8A CN109607798A (en) | 2018-12-18 | 2018-12-18 | A kind of highway sewage staged hybrid constructed wetland processing method |
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| CN201811549086.8A CN109607798A (en) | 2018-12-18 | 2018-12-18 | A kind of highway sewage staged hybrid constructed wetland processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573758A (en) * | 2020-11-17 | 2021-03-30 | 博域环保技术研究院(南京)有限公司 | Rural distributed sewage ecological treatment process |
| CN112592005A (en) * | 2020-12-29 | 2021-04-02 | 中信建设有限责任公司 | Highway rain sewage treatment system |
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