CN210915560U - Permeable reactive barrier applied to repairing of underground water heavy metal Cr6+ in tailing reservoir - Google Patents
Permeable reactive barrier applied to repairing of underground water heavy metal Cr6+ in tailing reservoir Download PDFInfo
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- CN210915560U CN210915560U CN201921537962.5U CN201921537962U CN210915560U CN 210915560 U CN210915560 U CN 210915560U CN 201921537962 U CN201921537962 U CN 201921537962U CN 210915560 U CN210915560 U CN 210915560U
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Abstract
The utility model discloses a be applied to tailing storehouse groundwater heavy metal Cr6+A permeable reactive barrier for repairing is composed of four reactive barrier skeletons with same structure, exhaust pipes welded to said reactive barrier skeletons, pebble layer, bentonite-iron powder composite layer, zeolite layer and activated carbon layer filled in said reactive barrier skeletons, connecting plates welded to four corners of said reactive barrier skeleton, and bolts passing through said connecting plates for connecting said reactive barrier skeletons,the device improves the heavy metal Cr of underground water by arranging the pebble layer, the bentonite iron powder composite layer, the zeolite layer and the activated carbon layer6+The purification effect of (2) adopts bolted connection through filling four reaction wall frameworks of cobble layer, bentonite iron powder composite bed, zeolite layer and activated carbon layer respectively, be convenient for dismouting transportation and later stage's change maintenance.
Description
Technical Field
The utility model relates to a groundwater heavy metal repair equipment field, concretely relates to be applied to tailing storehouse groundwater heavy metal Cr6+And repairing the permeable reactive barrier.
Background
The influence of pollution factors contained in tailing leachate borne by a tailing pond on underground water exists, and for the condition that an aged tailing pond is likely to leak, toxic heavy metals in the leachate are liable to diffuse to peripheral areas along with the underground water, and Cr in the heavy metals6+Can invade human body through digestive tract, respiratory tract, skin and mucosa, and contains Cr6+When excessive intake of water is caused by poisoning, Cr in groundwater6+When the content exceeds the standard, purification treatment is required.
The existing method applied to purifying the heavy metal Cr in underground water of a tailing pond6+The device has poor purification effect, and the prior device is applied to purifying the underground water heavy metal Cr in the tailing pond6+The device of (2) is generally the structure of integral type, and is comparatively heavy and inconvenient transportation and later maintenance.
Disclosure of Invention
An object of the utility model is to provide a be applied to tailing storehouse groundwater heavy metal Cr6+Repairing permeable reactive barrier to solve the problem of the prior method for purifying heavy metal Cr in underground water of tailing pond6+The device has the defect of poor purification effect and the prior device applied to purifying the underground water heavy metal Cr in the tailing pond6+The device has the defects of generally integrated structure, heavy weight, inconvenient transportation and later maintenance.
Heavy metal Cr applied to underground water of tailing pond6+The permeable reactive barrier is repaired, the permeable reactive barrier comprises four reactive barrier frameworks with the same structure, exhaust pipes are welded on the reactive barrier frameworks, pebble layers, bentonite iron powder composite layers, zeolite layers and activated carbon layers are filled in the four reactive barrier frameworks respectively, connecting plates are welded at four corners of the reactive barrier frameworks, and the four reactive barrier frameworks are connected through the connecting plates on which bolts sequentially penetrate.
Preferably, the reaction wall framework comprises a support frame, the top of the support frame is provided with a jack, and two sides of the support frame are fixedly connected with stainless steel nets.
Preferably, the specific filling position of the pebble layer, the bentonite iron powder composite layer, the zeolite layer and the activated carbon layer is between two stainless steel nets in the support frame.
Preferably, the exhaust pipe is inserted between the two stainless steel nets in the support frame through the insertion holes in the support frame and is welded on the support frame.
Preferably, the zeolite layer is mordenite.
The utility model has the advantages that: the utility model discloses in be applied to tailing storehouse groundwater heavy metal Cr6+The permeable reactive barrier is repaired by arranging a pebble layer, a bentonite iron powder composite layer, a zeolite layer and an active carbon layer, thereby improving the heavy metal Cr of underground water6+The purification effect of (2) adopts bolted connection through filling four reaction wall frameworks of cobble layer, bentonite iron powder composite bed, zeolite layer and activated carbon layer respectively, be convenient for dismouting transportation and later stage's change maintenance.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of the present invention with different viewing angles.
Fig. 3 is a cross-sectional view at a in fig. 2.
The device comprises a reaction wall framework, a support frame 11, a jack 111, a stainless steel net 12, an exhaust pipe 2, a pebble layer 3, a bentonite iron powder composite layer 4, a zeolite layer 5, an activated carbon layer 6 and a connecting plate 7.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in figures 1 to 3, the heavy metal Cr is applied to underground water of a tailing pond6+The permeable reactive barrier is repaired, and the permeable reactive barrier comprises four reactive barrier frameworks 1 with the same structure, wherein an exhaust pipe 2 is welded on the reactive barrier framework 1, a pebble layer 3, a bentonite iron powder composite layer 4, a zeolite layer 5 and an activated carbon layer 6 are respectively filled in the four reactive barrier frameworks 1, connecting plates 7 are welded at four corners of each reactive barrier framework 1, and the four reactive barrier frameworks 1 sequentially penetrate through the connecting plates 7 on the reactive barrier frameworks 1 through bolts to be connected.
In this embodiment, the reaction wall framework 1 includes a support frame 11, wherein the top of the support frame 11 is provided with a hole 111, and both sides of the support frame 11 are fixedly connected with stainless steel nets 12.
In this embodiment, the specific filling positions of the pebble layer 3, the bentonite iron powder composite layer 4, the zeolite layer 5 and the activated carbon layer 6 are between two stainless steel nets 12 in the support frame 11.
In this embodiment, the exhaust pipe 2 is inserted between the two stainless nets 12 in the support frame 11 through the insertion holes 111 of the support frame 11 and welded to the support frame 11.
In this embodiment, mordenite is specifically used for the zeolite layer 5.
The working process and principle are as follows: when the device is used, workers confirm that the mine in the tailings pond leaks and define the area range of pollutants by monitoring and sampling, and then determine the flow path of underground water and heavy metal Cr by hydrologic underground exploration6+The migration range of the device is determined according to the installation position of the reaction wall, then bolts for connecting four reaction wall frameworks 1 respectively filled with a pebble layer 3, a bentonite iron powder composite layer 4, a zeolite layer 5 and an activated carbon layer 6 can be firstly unscrewed, so that the device can be conveniently transported to the installation position, then construction grooves are dug at the installation position, and the construction grooves need to be dug to the position 3 below a watertight foundation layerAt 0 cm, four reaction wall frameworks 1 respectively filled with a pebble layer 3, a bentonite iron powder composite layer 4, a zeolite layer 5 and an activated carbon layer 6 are connected through bolts to form a reaction wall, then the reaction wall is vertically inserted into a 30 cm position below a waterproof foundation layer in a construction groove, a concrete top cover is arranged on the ground surface to stabilize the reaction wall, the concrete top cover does not exceed the height of an exhaust pipe 2 so as not to influence the exhaust of the exhaust pipe 2, after the reaction wall is installed, underground water firstly enters the pebble layer 3 and is uniformly distributed under the action of the pebble layer, then the underground water flowing through the pebble layer 3 enters the bentonite iron powder composite layer 4, and Cr in the underground water6+Reacts therewith to be reduced into Cr3+And finally hydrolyzed into Cr (OH) which is hardly soluble3Reaction to produce O2Is discharged from the exhaust pipe 2, then the underground water flow enters the zeolite layer 5, and the mordenite adsorbs Cr in the underground water6+And the problem of operation blockage can be relieved, then the underground water enters the activated carbon layer 6, and the activated carbon layer 6 further adsorbs Cr in the underground water6+Finally, Cr in the groundwater is obtained6+Purifying to reach the standard.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (5)
1. Heavy metal Cr applied to underground water of tailing pond6+Repair permeable reactive barrier, its characterized in that: including four reaction wall skeleton (1) that the structure is the same, the welding has blast pipe (2) and has filled pebble layer (3), bentonite iron powder composite bed (4), zeolite layer (5) and active carbon layer (6) respectively in four reaction wall skeleton (1) on reaction wall skeleton (1), connecting plate (7) have all been welded in reaction wall skeleton (1) four corners, and four reaction wall skeleton (1) pass connecting plate (7) on it in proper order through the bolt and connect.
2. According to the claims1, the heavy metal Cr applied to underground water of a tailing pond6+Repair permeable reactive barrier, its characterized in that: the reaction wall skeleton (1) comprises a supporting frame (11), wherein the top of the supporting frame (11) is provided with a jack (111) and two sides of the supporting frame are fixedly connected with stainless steel nets (12).
3. The heavy metal Cr applied to underground water of a tailing pond according to claim 26+Repair permeable reactive barrier, its characterized in that: the concrete filling positions of the pebble layer (3), the bentonite iron powder composite layer (4), the zeolite layer (5) and the activated carbon layer (6) are between two stainless steel nets (12) in the supporting frame (11).
4. The heavy metal Cr applied to underground water of a tailing pond according to claim 26+Repair permeable reactive barrier, its characterized in that: the exhaust pipe (2) is inserted between the two stainless steel nets (12) in the support frame (11) through the insertion holes (111) in the support frame (11) and is welded on the support frame (11).
5. The heavy metal Cr applied to underground water of a tailing pond according to claim 16+Repair permeable reactive barrier, its characterized in that: the zeolite layer (5) is mordenite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921537962.5U CN210915560U (en) | 2019-09-16 | 2019-09-16 | Permeable reactive barrier applied to repairing of underground water heavy metal Cr6+ in tailing reservoir |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921537962.5U CN210915560U (en) | 2019-09-16 | 2019-09-16 | Permeable reactive barrier applied to repairing of underground water heavy metal Cr6+ in tailing reservoir |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314859A (en) * | 2021-12-29 | 2022-04-12 | 北京建工环境修复股份有限公司 | Method for treating pollution by permeation type reaction wall |
| CN114314813A (en) * | 2021-12-29 | 2022-04-12 | 北京建工环境修复股份有限公司 | Biological filling permeable reaction wall and construction method thereof |
| WO2023123140A1 (en) * | 2021-12-29 | 2023-07-06 | 北京建工环境修复股份有限公司 | Method for preventing and treating pollution plume migration of permeable reactive barrier |
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2019
- 2019-09-16 CN CN201921537962.5U patent/CN210915560U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314859A (en) * | 2021-12-29 | 2022-04-12 | 北京建工环境修复股份有限公司 | Method for treating pollution by permeation type reaction wall |
| CN114314813A (en) * | 2021-12-29 | 2022-04-12 | 北京建工环境修复股份有限公司 | Biological filling permeable reaction wall and construction method thereof |
| WO2023123140A1 (en) * | 2021-12-29 | 2023-07-06 | 北京建工环境修复股份有限公司 | Method for preventing and treating pollution plume migration of permeable reactive barrier |
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