CN215049243U

CN215049243U - Underground water heavy metal chromium pollution removal material wall

Info

Publication number: CN215049243U
Application number: CN202120313053.4U
Authority: CN
Inventors: 高镜清; 高源�; 陈勇; 姚贯扬; 陈少华; 李林帅; 尚娜; 李顺灵; 潘志恒
Original assignee: Henan Jingu Industrial Development Co ltd; Zhengzhou Yuanzhihe Environmental Protection Technology Co ltd; Zhengzhou University
Current assignee: Henan Jingu Industrial Development Co ltd; Zhengzhou Yuanzhihe Environmental Protection Technology Co ltd; Zhengzhou University
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-12-07
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a groundwater heavy metal chromium pollutes gets rid of material wall, including outer cobble layer, interior cobble layer has been laid on the right side on outer cobble layer, be provided with outer cobble layer and interior cobble layer between outer cobble layer and the interior cobble layer, iron-based modified material reaction zone has been laid on the right side on outer cobble layer, medical stone modified material reaction zone has been laid on the right side in iron-based modified material reaction zone, be provided with activated carbon material reaction zone between medical stone modified material reaction zone and the interior cobble layer, fixed cover is equipped with the drinking-water pipe between outer cobble layer and the outer cobble layer, the bottom and the fixed cover that the end of drinking-water pipe extended to outer cobble layer are equipped with the filter, the outside and the activity that the top of drinking-water pipe extended to outer cobble layer have cup jointed sealed lid. The underground water heavy metal chromium pollution removing material wall can ensure that the active material in the underground water heavy metal chromium pollution removing material wall is durable and not easy to block, and is convenient for underground construction to replace the filler.

Description

Underground water heavy metal chromium pollution removal material wall

Technical Field

The utility model belongs to the technical field of the offal pollutes and gets rid of, concretely relates to material wall is got rid of in groundwater heavy metal chromium pollution.

Background

After the reformation is opened, the industrialization process is accelerated, the water environment pollution condition in China is increasingly serious, and the underground water is used as a very important natural resource and can be used for drinking water, industrial water and agricultural water. The pollution of the underground water becomes a serious environmental problem in China, and the work of treating the polluted underground water is urgent. Through the exploration and the effort of scholars and engineers in recent years, the Permeable Reactive Barrier (PRB) technology is taken as a new technology for repairing polluted underground water, has the characteristics of good treatment effect, low manufacturing cost, small influence on ecological environment and the like, and can effectively remove organic chloride, heavy metal or inorganic ions and the like in the underground water.

In the current PRB technology, the reaction materials mainly comprise iron-based materials, hydroxyl phosphate, peroxide, clay minerals, activated carbon materials and the like. The problem that the iron-based material is easy to agglomerate and oxidize restricts the service life of the permeable reactive barrier material, and simultaneously, the difficulty is increased for the practical application of engineering, and the cost is increased. The utility model discloses an utilize iron-based material and medical stone material after the modification to solve to a certain extent that current permeable reactive barrier active material has with high costs, easily blocks up, adsorption capacity is low, the short problem of life, improve the effect of getting rid of pollutant heavy metal Cr (VI), Cd (II) in the groundwater, make it have great application prospect in the restoration of heavy metal Cr (VI), Cd (II) pollution groundwater.

Disclosure of Invention

Not enough to prior art, the utility model provides a groundwater heavy metal chromium pollutes gets rid of material wall has solved the problem of proposing in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a groundwater heavy metal chromium pollutes gets rid of material wall, includes outer cobble layer, interior cobble layer has been laid on the right side on outer cobble layer, and is provided with outer metalling and interior metalling between outer cobble layer and the interior cobble layer, iron-based modified material reaction zone has been laid on the right side on outer metalling, medical stone modified material reaction zone has been laid on the right side in iron-based modified material reaction zone, be provided with activated carbon material reaction zone between medical stone modified material reaction zone and the interior metalling, fixed cover is equipped with the drinking-water pipe between outer cobble layer and the outer metalling.

Further, the thickness of the outer crushed stone layer and the inner crushed stone layer is recommended to be 300-500 mm, and the outer crushed stone layer and the inner crushed stone layer are filled with crushed stones, and the grain size is 30-60 meshes.

Furthermore, the thickness of the reaction zone of the iron-based modified material is recommended to be 100-200 mm, and the particle size is 100-200 meshes.

Furthermore, the reaction zone of the medical stone modified material is suggested to be 100-200 mm thick, and is filled with anionic surfactant Sodium Dodecyl Benzene Sulfonate (SDBS) modified medical stone material with the particle size of 60-100 meshes.

Furthermore, the thickness of the active carbon material reaction zone is recommended to be 100-200 mm, and the particle size is recommended to be 60-100 meshes.

Further, the end of the pumping pipe extends to the bottom of the outer pebble layer and is fixedly sleeved with a filter head, the top of the pumping pipe extends to the outside of the outer pebble layer and is movably sleeved with a sealing cover, and the diameter of the pumping pipe is suggested to be 60-100 mm.

Has the advantages that:

1. the underground water heavy metal chromium pollution removing material wall is characterized in that a modification material filled with zero-valent iron as a base material, a modified medical stone material reaction area and an activated carbon material reaction area are matched for use, so that the active material in the underground water heavy metal chromium pollution removing material wall is durable and not easy to block.

2. This groundwater heavy metal chromium pollutes gets rid of material wall uses through the cooperation of sealed lid and filter head and drinking-water pipe for this groundwater heavy metal chromium pollutes gets rid of material wall and can take groundwater out through the drinking-water pipe, keeps apart impurity beyond groundwater underground through the filter head, and the underground construction of being convenient for is changed and is packed not carrying out the sealed of during operation drinking-water pipe through sealed lid guarantee.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the water pumping pipe of the present invention;

fig. 3 is a schematic structural view of the filter head of the present invention.

In the figure: 1. an outer pebble layer; 2. an outer crushed stone layer; 3. an iron-based modified material reaction zone; 4. a reaction zone of medical stone modified material; 5. an activated carbon material reaction zone; 6. an inner crushed stone layer; 7. an inner pebble layer; 8. a sealing cover; 9. a filter head; 10. a water pumping pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 3, the present invention provides a technical solution: a material wall for removing heavy metal chromium pollution of underground water comprises an outer pebble layer (1), an inner pebble layer (7) is laid on the right side of the outer pebble layer (1), an outer gravel layer (2) and an inner gravel layer (6) are arranged between the outer pebble layer (1) and the inner pebble layer (7), the thickness of the outer gravel layer (2) and the thickness of the inner gravel layer (6) are recommended to be 300-500 mm, gravel is filled, the particle size is 30-60 meshes, a certain gap is formed between gravel inside the outer gravel layer (2) and gravel inside the inner gravel layer (6), underground water can be circulated, stable work of other structures between the outer gravel layer (2) and the inner gravel layer (6) can be protected, an iron-based modified material reaction area (3) is laid on the right side of the outer gravel layer (2), the thickness of the iron-based modified material reaction area (3) is recommended to be 100-200 mm, zero-valent iron is filled as a base material to carry out silicon-coated treatment on the surface of the iron-based material, and then organic modified reaction material is carried out, the particle size is 100-200 meshes, the filled zero-valent iron material can perform oxidation-reduction reaction with high-valent metal ions in groundwater to absorb the high-valent metal ions, the right side of the iron-based modified material reaction zone (3) is provided with a medical stone modified material reaction zone (4), the medical stone modified material reaction zone (4) is recommended to be 100-200 mm thick, the filled anionic surfactant SDBS modified medical stone material is filled, the particle size is 60-100 meshes, the medical stone has strong adsorption capacity on elements harmful to human bodies, such as cadmium, mercury, arsenic, lead and the like, and can effectively adsorb the ions in the water, an activated carbon material reaction zone (5) is arranged between the medical stone modified material reaction zone 4 and the inner crushed stone layer 6, the recommended thickness of the activated carbon material reaction zone (5) is 100-200 mm, the particle size is 60-100 meshes, and the activated carbon material reaction zone (5) can absorb some solid impurities in the groundwater, prevents impurities from entering the medical stone modified material reaction zone (4) and the iron-based modified material reaction zone (3) along with water flow, the device has an influence on the work of the medical stone modified material reaction zone (4) and the iron-based modified material reaction zone (3), a water pumping pipe (10) is fixedly sleeved between the outer pebble layer (1) and the outer gravel layer (2), the tail end of the water pumping pipe (10) extends to the bottom of the outer pebble layer (1) and is fixedly sleeved with a filter head (9), the top of the water pumping pipe (10) extends to the outside of the outer pebble layer (1) and is movably sleeved with a sealing cover (8), the sealing cover (8) can seal the water pumping pipe (10) to prevent impurities in the gravel layer or reaction materials at the front end from entering the pipe, when the blockage occurs, the water pumping pipe (10) can be connected to a water pumping pump to pump underground water to the ground, and the diameter of the water pumping pipe is recommended to be 60-100 mm.

To sum up, when the underground water heavy metal chromium pollution removing material wall is used, firstly, according to underground water flow of a polluted site or a groove excavated around the polluted site, the underground water flow comprises an outer pebble layer 1, an outer gravel layer 2, an iron-based modified material reaction area 3, a medical stone modified material reaction area 4, an activated carbon material reaction area 5, an inner gravel layer 6 and an inner pebble layer 7 in sequence along the water flow direction, when a water pumping pipe 10 is not needed during normal operation of the permeable reaction wall, a sealing cover 8 is sealed to prevent impurities or front-end reaction materials in the gravel layer from entering the pipe and blocking, if the filler needs to be replaced, the sealing cover 8 of the water pumping pipe 10 needs to be opened and connected to a water pumping pump to pump underground water to the ground through a filter head 9, then underground construction is carried out to replace the filler, and the whole underground water heavy metal chromium pollution removing material wall is paved to pump and pumped, and (4) finishing.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a material wall is got rid of in groundwater heavy metal chromium pollution, a serial communication port, including outer cobble layer (1), interior cobble layer (7) have been laid on the right side of outer cobble layer (1), and be provided with outer rubble layer (2) and interior rubble layer (6) between outer cobble layer (1) and interior cobble layer (7), iron-based modified material reaction zone (3) have been laid on the right side of outer rubble layer (2), medical stone modified material reaction zone (4) have been laid on the right side of iron-based modified material reaction zone (3), be provided with activated carbon material reaction zone (5) between medical stone modified material reaction zone (4) and interior rubble layer (6), fixed cover is equipped with drinking-water pipe (10) between outer cobble layer (1) and outer rubble layer (2), the end of drinking-water pipe (10) extends to the bottom of outer layer (1) and fixed cover is equipped with filter (9), the top of the water pumping pipe (10) extends to the outside of the outer pebble layer (1) and is movably sleeved with a sealing cover (8).