CN204897511U - Water permeability reaction wall - Google Patents
Water permeability reaction wall Download PDFInfo
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- CN204897511U CN204897511U CN201520252459.0U CN201520252459U CN204897511U CN 204897511 U CN204897511 U CN 204897511U CN 201520252459 U CN201520252459 U CN 201520252459U CN 204897511 U CN204897511 U CN 204897511U
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- reaction wall
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- quartz sand
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Abstract
The utility model discloses a water permeability reaction wall, the both sides of wall body are quartzy sand bed, are the active layer between quartzy sand bed, and the porosity of active layer is 8%-15%. The utility model discloses a heavy metal pollution thing in the groundwater can effectively be got rid of to the reaction wall, has with low costs, simple to use, the ventilative advantage that the waterborne is strong, the treatment effect is good.
Description
Technical field
The utility model relates to a kind of reaction wall used in Heavy Metal Pollution Control, belongs to Environmental Chemical Engineering field.
Background technology
At environmental protection industry (epi), the improvement of heavy metal contamination is a very important content, and especially in groundwater environment is administered, this work is vital.Improvement for heavy metal contamination comprises initiatively administers and passive reparation two kinds; initiatively administer is by adding sinking agent or heavy metal ion precipitation is removed by the mode of chemical reaction by corresponding inner complex, the situation that this method is applicable on a small scale usually or the heavy metal ion of polluted-water is single in water.For the underground water that contents of many kinds of heavy metal ion is polluted, all have optionally in conjunction with carrier common heavy metal ion owing to being difficult to find, the effect of initiatively administering is poor, and cost is very high.Passive reparation is then the administration way that a kind of physical chemistry combines, wherein water-permeable reaction wall is the passive recovery technique of a kind of conventional original position: when the underground water polluted is by water-permeable reaction wall, heavy metal contaminants in underground water and the activeconstituents generation physics in filling materials for wall body, chemical reaction and being removed, thus the object reaching that groundwater pollution repairs.Heavy metal pollutent is needed to have good absorption or degradation capability based on the packing material of this principle also with regard to determining water-permeable reaction wall body of wall, and stable, do not produce secondary pollution.Packing material conventional is at present the composition of modified zeolite and zeroth order iron powder, and this composition has good regulation effect to macromolecule heavy metal contamination, and suitability is not strong.
Summary of the invention
For the defect of prior art, the utility model discloses a kind of water-permeable reaction wall, by the improvement to structure and activity layer, effectively can remove the various heavy pollutents such as Cd, Pb, the Zn in underground water, applied widely, clearance is high.
For achieving the above object, the utility model is achieved by the following technical solution:
A kind of water-permeable reaction wall, the both sides of body of wall are quartz sand layer, are active coating between quartz sand layer, and the porosity of active coating is 8% ~ 15%.
Wherein, active coating is the combination of a kind of and iron powder layer in active carbon layer, lkd layer or sawdust layer.
Under above described holes porosity, active coating heavy metal ion defines and the most effectively adsorbs, and can not form remarkably influenced again to the flowing of water simultaneously.
Above-mentioned active carbon layer, lkd layer or sawdust layer, because the heavy metal contaminants of difference to underground water of absorption mechanism has certain selectivity, iron powder has reductibility to valence heavy metal ions, therefore preferably active coating is iron powder layer, active carbon layer, lkd layer, sawdust layer be combined and form, thus improve the adaptability of the utility model water-permeable reaction wall.
In said structure, when active coating be iron powder layer, active carbon layer, lkd layer, sawdust layer be combined and form time, the thickness of each layer can adjust according to the content of the groundwater pollution situation of reality and heavy metal ion, typically, Thickness Ratio is (1-1.5): (1.6-2): (2.8-3.2): (1.5-2) has more satisfactory effect.
In order to simplify said process, above-mentioned each composition also can mix thus play corresponding adsorption effect by those skilled in the art, and in this case, active coating adopts iron powder: gac, lime, sawdust mix rear compacting stratification according to mass ratio 4: 2: 3: 1.
Because the concentration that underground water is filtering heavy metals in process ion can reduce, in order to reduce product cost under the prerequisite not affecting removal effect, the quartz sand layer of both sides, the thickness of active coating are different, the quartz sand layer of side: active coating: the Thickness Ratio of the quartz sand layer of opposite side is (1.2-1.6): (3-3.5): (1-1.2).
Applicant has carried out the extensive experiment under various applied environment to water-permeable reaction wall of the present utility model.Experimental result shows, and for the water body that there is contents of many kinds of heavy metal ion pollution, the utility model is to heavy metal contaminants such as Cd, Pb, Zn wherein, and when heavy metal concentration is 3 ~ 5mg/L, clearance reaches more than 90%.
Accompanying drawing explanation
Fig. 1 is the structural representation of water-permeable of the present utility model reaction wall.
Embodiment
Shown in figure 1, water-permeable reaction wall of the present utility model, be quartz sand layer 3,4 in the both sides of cavity 1, be the active coating 2 of porosity between 8% ~ 15% between two-layer quartz sand.
Wherein, the Thickness Ratio of quartz sand layer 3, active coating 2, quartz sand layer 4 is (1.2-1.6): (3-3.5): (1-1.2).
Wherein, active coating used both can be iron powder layer, active carbon layer, lkd layer, sawdust layer are arranged in order compacting, also can be add Wingdale and sawdust after iron filings and gac fully being mixed, and mixed also compacting as active coating.
Claims (2)
1. a water-permeable reaction wall, it is characterized in that the both sides of body of wall are quartz sand layer, be active coating between quartz sand layer, and the porosity of active coating is 8% ~ 15%, and wherein active coating is iron powder layer, active carbon layer, lkd layer, sawdust layer be combined and form.
2. water-permeable reaction wall according to claim 1, is characterized in that the thickness of the quartz sand layer of both sides, active coating is different, side quartz sand layer: active coating: the Thickness Ratio of opposite side quartz sand layer is (1.2-1.6): (3-3.5): (1-1.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520252459.0U CN204897511U (en) | 2015-04-23 | 2015-04-23 | Water permeability reaction wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520252459.0U CN204897511U (en) | 2015-04-23 | 2015-04-23 | Water permeability reaction wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204897511U true CN204897511U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520252459.0U Expired - Fee Related CN204897511U (en) | 2015-04-23 | 2015-04-23 | Water permeability reaction wall |
Country Status (1)
| Country | Link |
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| CN (1) | CN204897511U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948303A (en) * | 2016-04-29 | 2016-09-21 | 长沙理工大学 | Device for degrading heavy-metal ion contaminants of soil of mining area and use method for device |
| CN107540128A (en) * | 2017-09-30 | 2018-01-05 | 中国地质大学（武汉） | The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material |
-
2015
- 2015-04-23 CN CN201520252459.0U patent/CN204897511U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948303A (en) * | 2016-04-29 | 2016-09-21 | 长沙理工大学 | Device for degrading heavy-metal ion contaminants of soil of mining area and use method for device |
| CN105948303B (en) * | 2016-04-29 | 2019-09-13 | 长沙理工大学 | A kind of degradation mining area soil body heavy metal ion polluting device and its application method |
| CN107540128A (en) * | 2017-09-30 | 2018-01-05 | 中国地质大学（武汉） | The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20170423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |