CN109205797A - A kind of restorative procedure in heavy metal pollution waters - Google Patents
A kind of restorative procedure in heavy metal pollution waters Download PDFInfo
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- CN109205797A CN109205797A CN201811073387.8A CN201811073387A CN109205797A CN 109205797 A CN109205797 A CN 109205797A CN 201811073387 A CN201811073387 A CN 201811073387A CN 109205797 A CN109205797 A CN 109205797A
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- heavy metal
- bed mud
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses a kind of restorative procedure in heavy metal pollution waters, comprising the following steps: is segmented ejectment of shutting off to polluted water region；Segmentation is to river dredging；Take the native stone on waters bank, backfills riverbed；The bed mud excavated is carried out dehydrating；Wastewater collection, processing to being generated in dehydration；Organic fungi-manure, the heavy metal accumulation microorganism containing domestication in the organic fungi-manure are added in bed mud after dewatering；It is taken on previous riverbank and barrier layer is set above soil point, bed mud is covered on formation sediment layer above barrier layer by treated, nutrition soil layer is covered in the top of sediment layer, in the top of nutrition soil layer building ecological intercepting purification system.The bed mud of polluted water region is excavated, the content of heavy metal in bed mud can be quickly reduced, is combined by microorganism and plant, improves plant to the adsorption efficiency of heavy metal, barrier layer prevents heavy metal from permeating the ground.Present invention application water pollution control technology.
Description
Technical field
The present invention relates to polluted water region Treatment process fields, more particularly to a kind of reparation side in heavy metal pollution waters
Method.
Background technique
In all types of industries production process, a large amount of untreated discharge of wastewater cause river water body into natural environment
The pollution of serious heavy metal.In river water body most heavy metal contaminants by precipitating, absorption with complexing, oxidation and
A variety of different physics chemical actions such as reduction, are transferred in solid phase bed mud by water body, finally deposit and be progressively enriched with, lead to bed mud
In each heavy metal species content severely exceed, cause serious environmental pollution.And heavy metal is in unstable shape in bed mud
State, migration is strong, can move towards, migrate into downstream water system with river under field conditions (factors), while ploughing as river flows into,
Forest zone etc., it is serious to destroy natural environment and the ecosystem even into the drinking water source region in downstream city, endanger the strong of the mankind
Health.
Traditional bed mud Treatment process is to plant heavy metal accumulation plant in waters, the absorption using plant to heavy metal
So that heavy metal element is fixed up with absorption, reduces the metallic element in bed mud, but that there are repairing efficiencies is long for this method, sees
Effect is slow, just the content of beary metal in bed mud can be made to be down to safe range up to the several years to ten several years.The water safety in downstream is made
At seriously threatening.
Polluted water region usually will appear the problem of water eutrophication, and plant largely overgrows, and cause oxygen content in water body anxious
The case where reducing sharply less, eventually leading to water body animal mortality, to maintain water body content, currently used means are to pass through oxygenation
Device carries out oxygenation to water body, and equipment cost is high, and energy consumption is high.
Summary of the invention
The object of the invention is that a kind of restorative procedure in heavy metal pollution waters is provided, it is effective using Biostatic heavy metal
The content of heavy metal in bed mud is reduced, while reducing bed mud landfill land occupation demand and being improved by the building of superimposed flow purification system
Water reoxygenation ability provides stronger growing environment for microorganism, finally polluted-water is made to obtain Long term control.
The technical scheme adopted by the invention is that: a kind of restorative procedure in heavy metal pollution waters, which is characterized in that including
Following steps:
A. shut off ejectment: shutting off ejectment to polluted water region segmentation, remove the water in waters, bed mud is exposed；
B. by artificial, mechanical excavation, dredging dredging engineering: is carried out to the riverbed after segmentation；
C-1. riverbed substrate is restored: taking the native stone on waters bank, backfills riverbed, restores riverbed substrate to planning and designing mark
It is high；
C-2. dewatering projects: the bed mud excavated is delivered to dehydration place and is carried out dehydrating；
D. engineering of water treatment: the waste water generated during dewatering projects is collected, after pretreatment, is delivered to industry
Wastewater treatment is handled using factory；
E. bed mud bio-stabilization is administered: organic fungi-manure is added in bed mud after dewatering；
F. construct ecological intercepting purification system: previous riverbank take soil put above barrier layer 4 is set, will treated bed mud
It is covered on above barrier layer and forms sediment layer 1, cover nutrition soil layer 2 in the top of sediment layer, constructed in the top of nutrition soil layer 2
Ecological intercepting purification system.
It advanced optimizes, the ecological intercepting purification system is net including buffer area of shutting off, infiltration buffer area and current wetland
Change area, the current wetland purifying area is located at the polluted water region, and the buffer area of shutting off, infiltration buffer area are by as far as closely successively
It is disposed adjacent on waters bank；
The buffer area of shutting off is made of the resistance to heavy metal arbor of well developed root system, and the infiltration buffer area is by resistance to heavy metal
Herbaceous plant is constituted, and the current wetland purifying area is made of the water plant of resistance to heavy metal.It advanced optimizes, the resistance to huge sum of money
Belonging to water plant includes emergent aquactic plant and phreatophyte, and the emergent aquactic plant is located at the depth of water and is lower than in the region 20cm, the diving
Plant is located in the region that the depth of water is more than 20cm.
Advanced optimize, it is described shut off buffer area and infiltration buffer area between be additionally provided with transition region, the transition region is by resistance to
The shrub of heavy metal is constituted.
It advanced optimizes, the infiltration buffer area is transversely provided with ecological intercepting ditch, the bottom of trench and ditch of the ecological intercepting ditch
Wall is soil property, and the bottom of trench and furrow bank plant and be implanted with heavy metal accumulation plant, and the tail portion of the ecological intercepting ditch, which is equipped with, to be intercepted
Dam, the interception dam are equipped with graduating valve.
Advanced optimize, the barrier layer is made of clay, the barrier layer with a thickness of 0.5-1.0m.
It advanced optimizes, further includes step g: using Upstream Canal water-head, constructing ecological superimposed flow system, it is multiple to improve water body
Oxygen ability increases water body self-purification ability.
It advanced optimizes, in the step e, organic fungi-manure is by screening the indigenous heavy metal accumulation microorganism of domestication, inhaling
Attached medium, organic matter, nitrogenous fertilizer, phosphate fertilizer composition, each ingredient accounting are 3-6%, 37-45%, 45-50%, 1.5-2.0%, 2.5-
3.5%.
It advanced optimizes, in the step e, the weight ratio of organic fungi-manure and bed mud is 1:6-1:4, the thickness of the sediment layer
Degree is 0.3-0.5m.
Advanced optimize, in the step f, nutrition soil layer with a thickness of 0.3-1.0m.
Beneficial effects of the present invention: the present invention excavates the bed mud of polluted water region, and can achieve quickly reduces waters
In heavy metal content, by the bed mud excavated pass through dehydration, in bed mud be added contain heavy metal accumulation
After microorganism, it is covered on bank, the component ecological intercepting purification system above bed mud is combined by microorganism and plant, is improved
Barrier layer is arranged to the adsorption efficiency of heavy metal in plant below sediment layer, prevents metal with making in Groundwater infiltration soil
At secondary pollution.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is process flow chart of the invention；
Fig. 2 is the repair system structural schematic diagram of building.
Specific embodiment
Process flow chart as shown in Figure 1, the restorative procedure in metallic pollution waters, comprising the following steps:
A. shut off ejectment: shutting off ejectment to polluted water region segmentation, remove the water in waters, bed mud is exposed；
B. by artificial, mechanical excavation, dredging dredging engineering: is carried out to the riverbed after segmentation；
C-1. riverbed substrate is restored: taking the native stone on waters bank, backfills riverbed, restores riverbed substrate to planning and designing mark
It is high；
C-2. dewatering projects: the bed mud excavated is delivered to dehydration place and is carried out dehydrating；
D. engineering of water treatment: the waste water generated during dewatering projects is collected, after pretreatment, is delivered to industry
Wastewater treatment is handled using factory；
E. bed mud bio-stabilization is administered: organic fungi-manure is added in bed mud after dewatering；
F. construct ecological intercepting purification system: previous riverbank take soil put above barrier layer 4 is set, will treated bed mud
It is covered on formation sediment layer 1 above barrier layer 4, nutrition soil layer 2 is covered in the top of sediment layer 1, in the top structure of nutrition soil layer 2
Build ecological intercepting purification system.
G. it constructs ecological superimposed flow system: constructing ecological superimposed flow system, improve water reoxygenation ability, increase self-purification of water energy
Power.
By carrying out draining of shutting off to waters, bed mud is exposed, by manually or mechanically equal excavations mode, will contain
The bed mud of heavy metal is excavated, and the content of heavy metal in waters can be quickly reduced, and achievees the purpose that quickly to improve water quality.
By excavating the earthwork stone on bank, riverbed is backfilled, so that riverbed is restored to designed elevation, while the earthwork is taken on bank
The place of stone is laid with barrier layer 4 after finishing, then dewatered bed mud is laid on formation sediment layer 1 above barrier layer 4,
Without the settlement in addition looking for bed mud.
It is laid with nutrition soil layer 2 in the top of sediment layer 1, constructs ecological intercepting purification system, benefit in the top of nutrition soil layer 2
It is combined with microorganism and plant, accelerates the absorption efficiency to heavy metal, while plant intercepts surface flowing water, protect surface layer,
Prevent rain drop erosion soil from causing secondary pollution.
Using the difference in height of the channel of waters upstream, ecological superimposed flow system is constructed, is kinetic energy, classification by the potential energy of water
Fall, form water curtain and water droplet, improve water reoxygenation ability, increases water body self-purification ability.It avoids because water eutrophication is made
At water hypoxia, it is not necessarily to aerator, reduces energy consumption.
Ecological intercepting purification system includes shut off buffer area 31, infiltration buffer area 32 and current wetland purifying area 33, undercurrent
Wetland purification area 33 is located at polluted water region, and buffer area 31 of shutting off, infiltration buffer area 32 are by as far as being closely successively disposed adjacent in waters
Bank；
Buffer area 31 of shutting off is made of the resistance to heavy metal arbor of well developed root system, infiltration buffer area 32 by resistance to heavy metal draft
Plant constitution, current wetland purifying area 33 are made of the water plant of resistance to heavy metal.
Buffer area 31 of shutting off is made of a variety of resistance to heavy metal arbors of well developed root system, arbor include Chinese tallow tree, poplar, sweetgum,
The combination of one or more of dry land willow, yew, basket oak, the planting density of arbor are 2m-2m.Shut off buffer area 31 formation
First layer ecological riparian buffer zone, can radix saposhnikoviae, Gu Tan, slope protection, flood control, protecting against shock and intercept rainwash and rainwater
The dirts such as bring floating material, silt, tentatively rainwater is intercepted, is purified and played protection next stage infiltration buffer area and
The effect of the current wetland purifying area of junior again.
Permeating buffer area 32 includes planting the herbaceous plant of resistance to heavy metal in bank hillside fields, and herbaceous plant includes Radix Ophiopogonis, Pu
The combination of one or more of public English, herbal planting density are 1-3 plants/m2。
Current wetland purifying area 33 includes being lower than the emergent aquactic plant of 20cm ecological region planting heavy metal accumulation in water depth,
Water depth is more than the phreatophyte of the ecological region planting heavy metal accumulation of 20cm, and emergent aquactic plant includes mullet grass, oenanthe stolonifera, water
The combination of one or more of taro, Scirpus tabernaemontani, imperial crown grass, calamus, the planting density of emergent aquactic plant is 9-25 plants/m2, diving
Plant includes the combination of one or more of hornwort, black algae, eel grass, and the planting density of phreatophyte is 3-9 plants/m2。
The effects of absorption, accumulation of the physical actions such as resistance filter, sedimentation, absorption by aquatic vegetation and plant
And achieve the effect that carry out pollution water quality deep purifying, and play reduction flood, stablize bank base, while being river biocoene
Habitat is provided, suitable River Landscape is built.
Shut off and be additionally provided with transition region 34 between buffer area 31 and infiltration buffer area 32, transition region 34 by resistance to heavy metal shrub
It constitutes, to improve interception clean-up effect.
Kind is implanted with the shrub of resistance to heavy metal between infiltration buffer area 32 and buffer area 31 of shutting off, shrub shrub include cuckoo,
Combination of the calyx away from one or more of flower, serissa serissoide, Euonymus japonicus, castor, oleander, the planting density of shrub are density
For 1m-1m.
Infiltration buffer area 32 is transversely provided with ecological intercepting ditch 5, and the bottom of trench and furrow bank of ecological intercepting ditch 5 are soil property, bottom of trench
It is planted with furrow bank and is implanted with heavy metal accumulation plant, the tail portion of ecological intercepting ditch 5, which is equipped with, intercepts dam, intercepts dam and is equipped with graduating valve.
By ecological intercepting ditch 5, rainwash water and interflow subsurface drainage water are intercepted, prevents water from entering waters, avoids secondary dirt
Dye plants heavy metal accumulation plant in ecological intercepting ditch 5, achievees the purpose that purified water, open interception dam again after water quality reaching standard,
The water for intercepting structure is put into the waters of downstream.
Barrier layer 4 is equipped between sediment layer 1 and the soil layer on bank, barrier layer 4 is located at the lower section of ecological intercepting ditch 5.Barrier
Layer 4 is made of clay, barrier layer 4 with a thickness of 0.5-1.0m, during lower infiltration, heavy metal can enter surface water with dampening
Underground, clay have good waterproof performance, are a kind of natural waterproof materials, can prevent from seeping under heavy metal.
In the step e, organic fungi-manure is made of indigenous advantage resistant strain, adsorbing medium, organic matter, nitrogenous fertilizer, phosphate fertilizer,
Each ingredient accounting is 3-6%, 37-45%, 45-50%, 1.5-2.0%, 2.5-3.5%, wherein indigenous advantage resistant strain is
Screen the indigenous heavy metal accumulation microorganism of domestication.
The weight ratio of organic fungi-manure and bed mud is 1:6-1:4, and organic fungi-manure provides enough for heavy metal accumulation microorganism
Nutritional ingredient, sediment layer 1 with a thickness of 0.3-0.5m.
Nutrition soil layer 2 makes with a thickness of 0.3-1.0m according to the length of different root systems of plant laying 2 thickness of nutrition soil layer
It obtains after root system of plant passes through nutrition soil layer 2 and enters in sediment layer 1, achieve the purpose that absorb heavy metal.
Certainly, the invention is not limited to above embodiment, those skilled in the art are without prejudice to the present invention
Equivalent deformation or replacement can be also made under the premise of spirit, these equivalent variation or replacement are all contained in the claim of this application
In limited range.
Claims (10)
1. a kind of restorative procedure in heavy metal pollution waters, which comprises the following steps:
A. shut off ejectment: shutting off ejectment to polluted water region segmentation, bed mud is exposed；
B. dredging engineering: segmentation carries out dredging to riverbed；
C-1. riverbed substrate is restored: taking the native stone on waters bank, backfills riverbed；
C-2. dewatering projects: the bed mud excavated is carried out dehydrating；
D. engineering of water treatment: to generated during dewatering projects wastewater collection, purified treatment；
E. bed mud bio-stabilization is administered: organic fungi-manure is added in bed mud after dewatering；
F. it constructs ecological intercepting purification system: being taken on previous riverbank and barrier layer (4) are set above soil point, bed mud covers by treated
Formation sediment layer (1) above barrier layer is covered, nutrition soil layer (2) are covered in the top of sediment layer, in the top of nutrition soil layer (2)
Construct ecological intercepting purification system.
2. the restorative procedure in heavy metal pollution waters according to claim 1, it is characterised in that: the ecological intercepting purification
System includes shut off buffer area (31), infiltration buffer area (32) and current wetland purifying area (33), the current wetland purifying area
(33) it is located at the polluted water region, the buffer area of shutting off (31), infiltration buffer area (32) are by as far as being closely successively disposed adjacent
Waters bank；
The buffer area of shutting off (31) is made of the resistance to heavy metal arbor of well developed root system, and the infiltration buffer area (32) is by a resistance to huge sum of money
The herbaceous plant of category is constituted, and the current wetland purifying area (33) is made of the water plant of resistance to heavy metal.
3. heavy metal pollution waters ecological management system according to claim 2, it is characterised in that: the water of resistance to heavy metal
Plant includes emergent aquactic plant and phreatophyte, and the emergent aquactic plant is located at the depth of water and is lower than in the region 20cm, the phreatophyte
It is more than in the region of 20cm positioned at the depth of water.
4. heavy metal pollution waters ecological management system according to claim 2 or 3, it is characterised in that: it is described shut off it is slow
Rush area (31) and infiltration buffer area (32) between be additionally provided with transition region (34), the transition region (34) by resistance to heavy metal shrub structure
At.
5. the restorative procedure in heavy metal pollution waters according to claim 2 or 3, it is characterised in that: the infiltration buffering
Area (32) is transversely provided with ecological intercepting ditch (5), and the bottom of trench and furrow bank of the ecological intercepting ditch (5) are soil property, the bottom of trench and
Furrow bank, which is planted, is implanted with heavy metal accumulation plant, and the tail portion of the ecological intercepting ditch (5), which is equipped with, intercepts dam, and the interception dam is equipped with
Graduating valve.
6. according to claim 1 to the restorative procedure in heavy metal pollution waters described in 3 any one, it is characterised in that: described
Barrier layer (4) is made of clay, the barrier layer (4) with a thickness of 0.5-1.0m.
7. the restorative procedure in heavy metal pollution waters according to claim 1, it is characterised in that: further include step g: utilizing
The water-head of Upstream Canal and waters constructs ecological superimposed flow system.
8. the restorative procedure in heavy metal pollution waters according to claim 1, it is characterised in that: organic in the step e
Bacterial manure is made of the indigenous heavy metal accumulation microorganism of screening domestication, adsorbing medium, organic matter, nitrogenous fertilizer, phosphate fertilizer, and each ingredient accounts for
Than for 3-6%, 37-45%, 45-50%, 1.5-2.0%, 2.5-3.5%.
9. the restorative procedure in heavy metal pollution waters according to claim 1 or 8, it is characterised in that: in the step e,
The weight ratio of organic fungi-manure and bed mud is 1:6-1:4；The sediment layer (1) with a thickness of 0.3-0.5m.
10. the restorative procedure in heavy metal pollution waters according to claim 1, it is characterised in that: in the step f, battalion
Support soil layer (2) with a thickness of 0.3-1.0m.
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| CN110294580A (en) * | 2019-07-23 | 2019-10-01 | 长安大学 | A kind of method of biotic population and artificial swamp combination processing Sediments |
| CN110565577A (en) * | 2019-09-05 | 2019-12-13 | 湖北久树环境科技有限公司 | Ecological restoration method for channel renovation project |
| CN111661915A (en) * | 2020-06-12 | 2020-09-15 | 广州市广绿园林绿化有限公司 | Wetland ecosystem restoration method |
| CN112219485A (en) * | 2020-10-12 | 2021-01-15 | 昆明理工大学 | Soil microorganism culture method for improving soil in alpine and high-altitude areas |
| CN114349292A (en) * | 2021-11-23 | 2022-04-15 | 河海大学 | Comprehensive resource method for river treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110294580A (en) * | 2019-07-23 | 2019-10-01 | 长安大学 | A kind of method of biotic population and artificial swamp combination processing Sediments |
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| CN111661915B (en) * | 2020-06-12 | 2022-02-22 | 广州市广绿园林绿化有限公司 | Wetland ecosystem restoration method |
| CN112219485A (en) * | 2020-10-12 | 2021-01-15 | 昆明理工大学 | Soil microorganism culture method for improving soil in alpine and high-altitude areas |
| CN112219485B (en) * | 2020-10-12 | 2021-08-20 | 昆明理工大学 | Soil microorganism culture method for improving soil in alpine and high-altitude areas |
| CN114349292A (en) * | 2021-11-23 | 2022-04-15 | 河海大学 | Comprehensive resource method for river treatment |
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Application publication date: 20190115 |