CN105236785B - Activity diafiltration wall filler - Google Patents
Activity diafiltration wall filler Download PDFInfo
- Publication number
- CN105236785B CN105236785B CN201510529910.3A CN201510529910A CN105236785B CN 105236785 B CN105236785 B CN 105236785B CN 201510529910 A CN201510529910 A CN 201510529910A CN 105236785 B CN105236785 B CN 105236785B
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- Prior art keywords
- filler
- activity
- wall
- percolated
- steel
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The present invention relates to a kind of activity diafiltration wall filler, belong to the technical field of underground water pollution control.Activity diafiltration wall filler of the present invention, the filler is contained in terms of raw material composition：The steel-making slag powder of 30~40wt%, and 60~70wt% agstone；The steel-making slag powder and agstone after mixing pelletizing grain, dry after i.e. can obtain the filler.The raw material of filler of the present invention is lime stone and slag, aboundresources and cheap, and preparation process is simple, and cost is relatively low.When contaminated underground water is by activity diafiltration wall, the filler in wall can be purified the pollutant in water, can effectively adsorb each metal ion species in water.
Description
Technical field
The present invention relates to the technical field of underground water pollution control, it is more particularly related to a kind of activity diafiltration
Wall filler.
Background technology
Underground water is the important component of water resource, is human survival, life and the essential preciousness of production activity
Natural resources.Used as tellurian freshwater resources, it has the ecological value and economic worth very high.
The underground water of current China is generally polluted by different degrees of, the water quality severe overweight of some areas, and dirty
Dye also is continuing to aggravate.Especially North City pollution is more serious, and pollution element is more, and exceeding standard rate is high.Main transnormal itemses
There are mineralizer, fluoride, total hardness, three nitrogen etc..China's underground water pollution showed from point to face develop, from east to western part
Extend, spread to rural area from city, from trend from part to regional diffusion；Pollutant component is then sent out from inorganic matter to organic matter
Exhibition, the extent of injury is on the rise；Underground water pollution area constantly expands, and pollution level is constantly aggravated.
According to pollutant produce industry type, can by pollution source of groundwater be divided into industrial pollution source, agricultural pollution source,
Domestic pollution source and natural pollution source.Industrial pollution source：It is primarily referred to as the pollution of " three wastes " (waste water,waste gas and industrial residue) of industry.
Such as electroplating wastewater, pickling waste waters, light industry waste water, metallurgy industry waste water, petrochemical organic wastewater poisonous and harmful waste water, all
It is the main cause for causing ground water chemistry to pollute.Industrial waste gas such as SO2、H2S、CO、CO2, the material such as nitrogen oxides and BaP
Fallen earthward with rainfall, by the runoff of ground surface and under ooze, so as to cause secondary pollution to underground water.Industrial residue such as blast furnace
Slag, slag, flyash, pyrite cinder, carbide slag, red mud, slime, ferro-silicon slag, ore dressing mine tailing, the sludge of sewage treatment plant
Deng, because air storage or underground landfill antiseepage leak-proof measure are unreasonable, the poisonous and harmful substance therein after wind and rain leaching
Direct or indirect polluted underground water.Agricultural pollution source：It is main to include remaining agricultural chemicals, chemical fertilizer and irrational sewage irrigation.According to
Incomplete statistics, Chinese organo-chlorine pesticide year amount of application is more than 80 ten thousand tons, more than 20 ten thousand tons of organophosphorus pesticide.Pouring water with precipitation etc.
Under eluviation, underground water large area agricultural chemicals and pollution by chemical fertilizer are caused.In addition, China has rural sewage disposal farm more than nearly 100 ten thousand public
Hectare, agriculture fills that sewage major part is unprocessed, and the sewage that there are about 70%~80% does not meet agriculture and pours water quality requirement.Every year due to dirt
Water irrigates the large amount of sewage of seepage, directly contributes the pollution of underground water.Domestic pollution source：Domestic pollution source is mainly house refuse
And sanitary sewage.Current house refuse mainly takes the mode of landfill, with exposing to the sun and rain and rainwash washes away, its dissolution
Thing can slowly permeate the ground, polluted underground water；On the other hand, discharged after sanitary sewage can not be disposed effectively, particularly vast agriculture
Village area, sanitary sewage be directly discharged into nearby water body, have by the direct seepage of septic tank, surface water and groundwater is produced
Raw severe contamination.Natural pollution source：In some areas, due to the activity of the mankind and natural calamity, the dirt of underground water is will also result in
Dye.Subway is such as built, diversion of digging a canal, the activity such as mining, it can change the water level of underground water, influence the flowing of underground water.
The natural calamities such as earthquake volcano can bring some harmful substances of crust depth into underground water, polluted-water.
Underground water pollution not only results in the generation of the social effects of pollution such as communicable disease, can also lose the economic of water resource and
The ecological value, so that aggravate the shortage of water resource and nervous situation, economic and society the sustainable development of serious restriction.Specific danger
Evil outstanding behaviours is the following aspects：(1) it is detrimental to health：Greatly infringement is brought to the body and mind of the people, various diseases are caused
Disease；(2) yield and quality of crops are reduced：The nutrient of some crops can also be reduced；(3) accelerate ecological environment degeneration and
Destruction：After pollutant enters river, lake, in addition to being caused harm to fish and aquatic organism, the normal of organism in water can be also influenceed
Growth, even results in the extinction of some organisms in water；(4) huge economic loss is caused：Underground water pollution is to health, agriculture
Industry production, the negative effect of ecological environment, can all show as economic loss.
For the preventing and treating and improvement of underground water pollution, mainly there are Pump-and-Treat technology (P＆T) and original position-treatment technology two
Type.Pump-and-Treat technology (P＆T), the underground water of pollution exactly is extracted into ground surface carries out purified treatment, and it can be divided into
Physical, chemical method and bioanalysis.Original position-treatment technology：The underground water of pollution is exactly carried out into purified treatment in ground in-situ,
Including activity diafiltration wall (PRB) technology：The technology that nineteen eighty-two is proposed by EPA, is exactly to dispose active material wall in underground
Body makes Contaminant plumes by after reaction medium, as environmentally acceptable underground water to intercept Contaminant plumes.Specific practice be
A bar ditch are dug in the downstream of Contaminant plumes, and the ditch digs to water-bearing layer bottom horizon d or impervious clay blanket, then filled in ditch
Can be reacted with the medium after flowing into ditch with the water penetration medium of pollutant reaction, Polluted Groundwater, generated innoxious
Product or sediment and be removed.Conventional filled media has：A. limestone, is used to neutralize acidic groundwater or removes removing heavy metals；
B. activated carbon, is used to remove nonpolar pollutant and CCl4, benzene etc.；C. zeolite and synthetic ion-exchange resin, are used to remove molten
Solution state heavy metal；D. iron filings etc., above-mentioned filled media is relatively costly, and acts on often relatively simple.
The content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of activity diafiltration wall filler.
To achieve these goals, the first aspect of the present invention employs following technical scheme：
A kind of activity diafiltration wall filler, it is characterised in that：The filler is contained in terms of raw material composition：30~40wt%
Steel-making slag powder, and 60~70wt% agstone；The steel-making slag powder and agstone after mixing pelletizing grain, dry after
Obtain the filler.
Wherein, the activity diafiltration wall filler is used for the improvement of underground water pollution.
Wherein, the diameter of the spherolite is preferably 5~20mm, more preferably 10~20mm.
Preferably, the preferred vessel slag of the slag, the vessel slag is contained in terms of oxide：15~26wt%'s
FeO, the CaO of 35~45wt%, the SiO of 9~15wt%2, the MgO of 6~12wt%, the MnO of 3~5wt%, 1~5wt%
Al2O3, and 1~3wt% P2O5。
Wherein, the slag by crusher in crushing, ball mill is levigate obtains the steel-making slag powder that particle diameter is 150~200 mesh.
Preferably, the steel-making slag powder is processed under turbulent-flow conditions by steam calcination, and the temperature of calcination processing is
800~900 DEG C, process time is 20~120min.Preferably, process time is 30~60min.
Preferably, vapor partial pressure is 0.15~0.30 atmospheric pressure.
The second aspect of the present invention, further relates to a kind of activity diafiltration wall.
Activity diafiltration wall of the present invention, it is characterised in that：The activity diafiltration wall is arranged on underground water of getting dirty and collects
Horizon d or impervious clay blanket on, and it is described activity diafiltration wall using it is above-mentioned activity diafiltration wall filler as wall
Material.
Activity diafiltration wall filler of the present invention has the advantages that compared with prior art：
The raw material of filler of the present invention is lime stone and slag, aboundresources and cheap, and prepares work
Skill is simple, and cost is relatively low.When contaminated underground water is by activity diafiltration wall, the filler in wall can be by the pollutant in water
Purified, can effectively be adsorbed each metal ion species in water, such as Cr, Pb, Cd, Cu, Ni, As, Zn heavy metal ion, can
To reach the purpose of purified water.
Brief description of the drawings
Fig. 1 is the preparation flow figure of activity diafiltration wall filler of the present invention.
Specific embodiment
Activity diafiltration wall filler of the present invention is further elaborated below with reference to specific embodiment, to help
Help those skilled in the art has more complete, accurate and deep understanding to inventive concept of the invention, technical scheme.
Embodiment 1
Activity diafiltration wall filler preparation technology flow described in the present embodiment is as shown in figure 1, i.e. with jaw crusher point
Grain block by lime stone and slag crushing into granularity less than 15cm, be then sent through ball mill carry out it is levigate, wear into granularity 150~
The powder of 200 mesh, as an example property ground, the slag is the vessel slag of certain steel plant in the present embodiment, wherein containing：
The SiO of CaO, 12wt% of FeO, 38wt% of 20wt%2, 10wt% MgO, 5wt% MnO, 3wt% Al2O3, and
The P of 1.2wt%2O5, and surplus other components.Then the agstone and steel-making slag powder that will be made are by 6: 4 mass ratio in steel
Mixed in container, add water and be uniformly mixing to obtain compound, amount of water is 10~15wt% of filler.By compound
Feeding pelletizer carries out pelletizing, and it is 5~20mm to control sphere diameter.Finally, the sphere diameter for just making is that the filler of 5~20mm is carried out
Dry or dry, the moisture removed in filler is the filler that can obtain the present embodiment.
Embodiment 2
With jaw crusher grain block respectively by lime stone with slag crushing into granularity less than 15cm, ball mill is then sent through
Carry out levigate, wear into the powder of the mesh of granularity 150~200, as an example property ground, the slag is certain steel plant in the present embodiment
Vessel slag, wherein containing：The SiO of CaO, 12wt% of FeO, 38wt% of 20wt%2, 10wt% MgO, 5wt%
The Al of MnO, 3wt%2O3, and 1.2wt% P2O5, and surplus other components.In the present embodiment, it is described it is levigate after
Slag carries out steam calcination treatment in recirculating fluidized bed, and it is 2: 8 with the flow-rate ratio of air that steam is controlled in atmospheric conditions,
In the state of turbulent flow, control the temperature of calcination processing for 800~900 DEG C, process time is 60min.Then the lime that will be made
Stone flour and steel-making slag powder are mixed by 6: 4 mass ratio in steel vessel, are added water and are uniformly mixing to obtain compound, and amount of water is
10~15wt% of filler.Feeding the mixture into pelletizer carries out pelletizing, and it is 5~20mm to control sphere diameter.Finally, just make
Sphere diameter be that the filler of 5~20mm is dried or dried, the moisture removed in filler is that can obtain filling out for the present embodiment
Fill agent.
In the underground water pollution three-dimensional simulation model of laboratory, the activity that embodiment 1 and embodiment 2 obtain is respectively adopted and oozes
Saturating wall filler prepares permeable active reaction wall as materials for wall, and the ground polluted by Cr (VI) and TCE is processed with it
After lower water, test run 3 months, by the way that in the underground water that the osmotically active reaction wall is passed through, for embodiment 1, Cr (VI) is dense
Degree is reduced to below 0.1mg/L by the 5mg/L of upstream, and TCE can be reduced to below 0.5mg/L by 5mg/L；And for embodiment 2,
Cr (VI) concentration is reduced to below 0.01mg/L by the 5mg/L of upstream, and TCE can be reduced to below 0.01mg/L by 5mg/L.
For the ordinary skill in the art, specific embodiment is that the present invention is exemplarily described,
The obvious present invention is implemented and is not subject to the restrictions described above, as long as employ method of the present invention design entering with technical scheme
The improvement of capable various unsubstantialities, or it is not improved by it is of the invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (7)
1. a kind of activity is percolated wall filler, it is characterised in that：The filler is contained in terms of raw material composition：30~40wt%'s
Steel-making slag powder, and 60~70wt% agstone；The steel-making slag powder and agstone after mixing pelletizing grain, dry after can
To the filler；The steel-making slag powder is processed under turbulent-flow conditions by steam calcination, and the temperature of calcination processing is 800~900
DEG C, process time is 20~120min, and vapor partial pressure is 0.15~0.30 atmospheric pressure.
2. activity according to claim 1 is percolated wall filler, it is characterised in that：The activity diafiltration wall filler is used for
The improvement of underground water pollution.
3. activity according to claim 1 is percolated wall filler, it is characterised in that：A diameter of 5~20mm of the spherolite.
4. activity according to claim 1 is percolated wall filler, it is characterised in that：The steel-making slag powder is converter ground-slag.
5. activity according to claim 4 is percolated wall filler, it is characterised in that：The converter ground-slag is contained in terms of oxide
Have：The FeO of 15~26wt%, the CaO of 35~45wt%, the SiO of 9~15wt%2, the MgO of 6~12wt%, 3~5wt%
The Al of MnO, 1~5wt%2O3, and 1~3wt% P2O5。
6. activity according to claim 1 is percolated wall filler, it is characterised in that：Slag is by crusher in crushing, ball milling
Machine is levigate to obtain the steel-making slag powder that particle diameter is 150~200 mesh.
7. a kind of activity is percolated wall, it is characterised in that：The activity diafiltration wall be arranged on the horizon d that underground water of getting dirty collects or
On impervious clay blanket, and the activity diafiltration wall is using the activity diafiltration wall filling described in any one of claim 1~6
Agent is used as materials for wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529910.3A CN105236785B (en) | 2015-08-26 | 2015-08-26 | Activity diafiltration wall filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529910.3A CN105236785B (en) | 2015-08-26 | 2015-08-26 | Activity diafiltration wall filler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105236785A CN105236785A (en) | 2016-01-13 |
| CN105236785B true CN105236785B (en) | 2017-06-06 |
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ID=55034669
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510529910.3A Expired - Fee Related CN105236785B (en) | 2015-08-26 | 2015-08-26 | Activity diafiltration wall filler |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145306A (en) * | 2016-08-05 | 2016-11-23 | 上海市环境工程设计科学研究院有限公司 | A kind of method using slag to purify Polluted Groundwater |
| CN106745907B (en) * | 2017-02-09 | 2024-02-09 | 河南城建学院 | Groundwater pollution remediation system and method thereof |
| CN111056585A (en) * | 2018-10-17 | 2020-04-24 | 武汉市秀谷科技有限公司 | Active infiltration wall filler and preparation method thereof |
| CN113372039A (en) * | 2021-07-01 | 2021-09-10 | 山东尚治新材料科技有限公司 | Wall secondary structure filler |
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| US7105084B1 (en) * | 2002-01-23 | 2006-09-12 | Hilton Jr Gene T | Hybrid flow pond |
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| CN105236785A (en) | 2016-01-13 |
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