In-situ remediation ecological blanket for treating water body pollution

Abstract

The utility model relates to the technical field of environmental treatment, provides an in-situ remediation ecological blanket for treating water pollution, and aims to solve the problems that in the prior art, submerged plants are planted on a remediation material of an in-situ covering technology, so that a remediation device is too thick, is not easy to fold and transport and is high in cost, and the submerged plants can damage the remediation material, so that the remediation effect is poor. And the repairing effect of the whole repairing device is weakened. The in-situ remediation ecological blanket comprises a remediation part, the remediation part comprises a gravity covering layer and an adsorption layer which are sequentially connected, the gravity covering layer is used for depositing the adsorption layer at the bottom of a water body, the adsorption layer is used for adsorbing heavy metal in the water body, and a plurality of containing openings are sequentially formed in the remediation part at intervals; and the plurality of plant parts are correspondingly arranged in the plurality of accommodating openings.

Description

Technical Field

[0001] This application relates to the technical field of environmental treatment, and more specifically, to an in-situ repair ecological blanket for treating water pollution. Background Art

[0002] The pollution of heavy metals in water is the focus of current environmental governance, and sediment is an important source of heavy metal pollution in water. Among them, sediment will slowly release pollutants, such as heavy metals like lead, zinc, copper, cadmium, etc., resulting in a gradual increase in the content of heavy metals in the water, thus causing a series of environmental problems such as secondary pollution of the water body.

[0003] To solve the above problems, the technology of submerged plant planting combined with in-situ covering is one of the important measures for the remediation of heavy metal pollution in water. Among them, the in-situ covering technology is to cover one or more layers of repair materials on the sediment to block the release and migration of pollutants to the overlying water body, so as to achieve the purpose of protecting the water quality of the overlying water body. And the surface area and biomass of submerged plants are relatively large, which can effectively adsorb heavy metals. The combination of the two can effectively improve the remediation efficiency of heavy metal pollution in water.

[0004] The existing combination of submerged plants and in-situ covering technology generally plants submerged plants on the repair materials of the in-situ covering technology, and the two form a repair device to repair heavy metal pollution in water. However, this measure will not only cause the repair device to be too thick, difficult to fold and transport, and costly, but also the submerged plants will damage the repair materials, resulting in a weakened repair effect of the entire repair device.

[0005] Therefore, the existing technology still needs to be improved. Summary of the Utility Model

[0006] The purpose of this application is to provide an in-situ repair ecological blanket for treating water pollution, so as to solve the problems that when the existing submerged plants are planted on the repair materials of the in-situ covering technology, it will not only cause the repair device to be too thick, difficult to fold and transport, and costly, but also the submerged plants will damage the repair materials, resulting in a weakened repair effect of the entire repair device.

[0007] To achieve the above purpose, the technical solution adopted in the first aspect embodiment of this application is:

[0008] An in-situ repair ecological blanket for treating water pollution, comprising:

[0009] A repair part, including a gravity covering layer and an adsorption layer connected in sequence. The gravity covering layer is used to deposit the adsorption layer at the bottom of the water body, and the adsorption layer is used to adsorb heavy metals in the water body. A number of accommodation openings are sequentially and spaced apart on the repair part;

[0010] A plurality of plant parts are correspondingly arranged in a plurality of the receiving openings.

[0011] According to the above-mentioned in-situ remediation ecological blanket for treating water pollution, the spacing distance between adjacent plant parts is set to 20-25 cm.

[0012] According to the above-mentioned in-situ restoration ecological blanket for treating water pollution, the plant part includes:

[0013] A grass planting bag, which is arranged in the receiving opening;

[0014] Submerged plants are arranged in the grass planting bag.

[0015] According to the above-mentioned in-situ restoration ecological blanket for treating water pollution, the in-situ restoration ecological blanket also includes:

[0016] An upper bottom layer, which is arranged on a side of the gravity covering layer away from the adsorption layer;

[0017] The lower bottom layer is arranged on the side of the adsorption layer away from the gravity covering layer.

[0018] According to the above-mentioned in-situ restoration ecological blanket for treating water pollution, the upper bottom layer and the lower bottom layer are both degradable plant fiber layers, and the thickness of the upper bottom layer and the lower bottom layer is set to 3-5 cm.

[0019] According to the above-mentioned in-situ restoration ecological blanket for treating water pollution, the in-situ restoration ecological blanket also includes:

[0020] A first structural reinforcement layer, which is disposed on a side of the upper bottom layer away from the gravity cover layer;

[0021] The second structure reinforcement layer is arranged on a side of the lower base layer away from the adsorption layer.

[0022] According to the above-mentioned in-situ restoration ecological blanket for treating water pollution, the in-situ restoration ecological blanket also includes:

[0023] A plurality of weight bags are sequentially and spaced apart on the repairing part, and the weight bags are filled with an adsorption metal layer.

[0024] According to the above-mentioned in-situ remediation ecological blanket for treating water pollution, the spacing distance between adjacent weight bags is set to 300-500 cm.

[0025] According to the above-mentioned in-situ restoration ecological blanket for treating water pollution, the adsorption layer is a biochar layer, the thickness of the adsorption layer is set to 1-1.2 cm, and the specific surface area of ​​the adsorption layer is set to 20m 2 / g, the total pore volume of the adsorption layer is 0.1 - 0.6 cm 3 / g.

[0026] For the in-situ remediation ecological blanket for treating water pollution as described above, the in-situ remediation ecological blanket further includes a plurality of suture fixing lines, and the plurality of suture fixing lines sequentially pass through the first structural reinforcement layer, the upper bottom layer, the remediation part, the lower bottom layer and the second structural reinforcement layer and are fixed.

[0027] The beneficial effects of an in-situ remediation ecological blanket for treating water pollution provided by the present application are at least as follows: by providing a gravity covering layer and an adsorption layer, the present application can reduce the release flux of heavy metals in the silt sediment by more than 90%, achieving the effect of stabilizing the underwater sediment. At the same time, it cooperates with the submerged plants in the plant part to repair the heavy metals in the water. Moreover, by sequentially and spacedly arranging a plurality of accommodation openings on the remediation part and respectively arranging a plurality of plant parts in the corresponding accommodation openings of the remediation part instead of on the adsorption layer, it can not only prevent the submerged plants in the plant part from damaging the adsorption layer and ensure the integrity of the adsorption layer, but also reduce the overall thickness of the entire in-situ remediation ecological blanket, thus facilitating folding, transportation and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a partial front view structural schematic diagram of an in-situ remediation ecological blanket for treating water pollution provided by an embodiment of the present application.

[0030] Figure 2 It is a top view structural schematic diagram of an in-situ remediation ecological blanket for treating water pollution provided by an embodiment of the present application.

[0031] Among them, the reference numerals in the drawings are as follows:

[0032] 1. Remediation part; 11. Gravity covering layer; 12. Adsorption layer; 13. Accommodation opening; 2. Plant part; 21. Grass planting bag; 3. Upper bottom layer; 4. Lower bottom layer; 5. First structural reinforcement layer; 6. Second structural reinforcement layer; 7. Counterweight bag; 8. Adsorbed metal layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clear and understandable, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0034] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The orientations or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positions shown in the accompanying drawings, and are only for convenience of description and cannot be construed as limitations on this technical solution. The terms "first" and "second" are only used for convenience of description and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0035] Heavy metal pollution in water bodies is the focus of current environmental governance, and sediment deposits are an important source of heavy metal pollution in water bodies. Among them, sediment deposits will slowly release pollutants, such as heavy metals like lead, zinc, copper, cadmium, etc., resulting in a gradual increase in the heavy metal content in the water body, thereby causing a series of environmental problems such as secondary pollution of the water body.

[0036] To solve the above problems, the technology of submerged plant cultivation combined with in-situ covering is one of the important measures for the remediation of heavy metal pollution in water bodies. Among them, the in-situ covering technology is to cover one or more layers of remediation materials on the sediment deposits to block the release and migration of pollutants to the overlying water body, so as to achieve the purpose of protecting the water quality of the overlying water body. And the surface area and biomass of submerged plants are relatively large, which can effectively adsorb heavy metals. The combination of the two can effectively improve the remediation efficiency of heavy metal pollution in water bodies.

[0037] The existing combination of submerged plants and in-situ covering technology generally plants submerged plants on the remediation materials of the in-situ covering technology, and the two form a remediation device to remediate heavy metal pollution in water bodies. However, this measure will not only cause the remediation device to be too thick, making it difficult to fold and transport and having a high cost, but also the submerged plants will damage the remediation materials, resulting in a weak remediation effect of the entire remediation device.

[0038] Refer to Figure 1, An in-situ remediation ecological blanket for treating water pollution provided by an embodiment of the present application includes a remediation part 1 and a plurality of plant parts 2. The remediation part 1 includes a gravity covering layer 11 and an adsorption layer 12 connected in sequence. The gravity covering layer 11 is used to deposit the adsorption layer 12 at the bottom of the water body, and the adsorption layer 12 is used to adsorb heavy metals in the water body. A plurality of accommodation openings 13 are sequentially and spaced apart on the remediation part 1, and a plurality of plant parts 2 are correspondingly arranged in the plurality of accommodation openings 13.

[0039] In this embodiment, by setting the gravity covering layer 11 and the adsorption layer 12, the release flux of heavy metals in the silt sediment can be reduced by more than 90%, achieving the effect of stabilizing the underwater sediment. At the same time, it cooperates with the submerged plants in the plant part 2 to repair the heavy metals in the water body. Moreover, in this embodiment, a plurality of accommodation openings 13 are sequentially and spaced apart on the remediation part 1, and a plurality of plant parts 2 are respectively arranged in the corresponding accommodation openings 13 of the remediation part 1, rather than on the adsorption layer 12. This not only avoids the submerged plants in the plant part 2 from damaging the adsorption layer 12 and ensures the integrity of the adsorption layer 12, but also can reduce the overall thickness of the entire in-situ remediation ecological blanket, thereby facilitating folding, transportation, and having low costs.

[0040] Refer to Figure 1 and Figure 2 , In one embodiment, the plant part 2 includes a grass planting bag 21 and submerged plants (not shown in the figure). The grass planting bag 21 is arranged in the accommodation opening 13, and the submerged plants are placed in the grass planting bag 21.

[0041] Among them, the grass planting bag 21 can be a degradable plant fiber bag. The thickness of the grass planting bag 21 can be 3.0 mm - 5.0 mm. The spacing distance between adjacent plant parts 2 can be 20 - 25 cm. The common planting density of submerged plants is as follows: Vallisneria natans 16 - 25 clusters per square meter, Potamogeton distinctus 20 - 30 clusters per square meter, Hydrilla verticillata 9 - 16 clusters per square meter, Myriophyllum verticillatum 6 - 9 clusters per square meter, Elodea nuttallii 25 - 36 clusters per square meter.

[0042] In one embodiment, the gravity covering layer 11 can be a steel slag powder layer or a red mud layer. The thickness of the gravity covering layer 11 can be 1 - 1.2 cm. Among them, the setting of the steel slag powder layer or the red mud layer not only effectively inhibits the release of heavy metals in the silt sediment, but also avoids the problems of difficult deposition of the adsorption layer 12 and unstable gravity.

[0043] In one embodiment, the adsorption layer 12 can be a modified biochar layer. The thickness of the adsorption layer 12 can be 1 - 1.2 cm. Among them, the specific surface area of this modified biochar layer is about 20 m2 / g, and the total pore volume is between 0.1 - 0.6 cm3 / g, which can reduce the release flux of heavy metals in the silt sediment by more than 90%.

[0044] Refer to Figure 1 In one embodiment, the in-situ remediation ecological blanket further includes an upper bottom layer 3 and a lower bottom layer 4. The upper bottom layer 3 is disposed on the side of the gravity covering layer 11 away from the adsorption layer 12, and the lower bottom layer 4 is disposed on the side of the adsorption layer 12 away from the gravity covering layer 11. In this embodiment, by providing the upper bottom layer 3 and the lower bottom layer 4, the gravity covering layer 11 and the adsorption layer 12 can be wrapped to prevent the leakage of the adsorption layer 12.

[0045] Wherein, both the upper bottom layer 3 and the lower bottom layer 4 can be biodegradable plant fiber layers, and the thickness of the upper bottom layer 3 and the lower bottom layer 4 can be 3-5 cm.

[0046] Refer to Figure 1 In one embodiment, the in-situ remediation ecological blanket further includes a first structural reinforcement layer 5 and a second structural reinforcement layer 6. The first structural reinforcement layer 5 is disposed on the side of the upper bottom layer 3 away from the gravity covering layer 11, and the second structural reinforcement layer 6 is disposed on the side of the lower bottom layer 4 away from the adsorption layer 12. In this embodiment, by providing the first structural reinforcement layer 5 and the second structural reinforcement layer 6, the overall structural strength of the in-situ remediation ecological blanket can be enhanced.

[0047] Wherein, both the first structural reinforcement layer 5 and the second structural reinforcement layer 6 can be polypropylene layers or polyethylene layers, and the thickness of the first structural reinforcement layer 5 and the second structural reinforcement layer 6 can be 0.8-1.5 cm.

[0048] Refer to Figure 1 and Figure 2 In one embodiment, the in-situ remediation ecological blanket further includes a plurality of counterweight bags 7. The plurality of counterweight bags 7 are sequentially and spaced apart on the repair portion 1. In this embodiment, by providing the counterweight bags 7, it can cooperate with the gravity covering layer 11 to further effectively solve the problems of difficult deposition of the adsorption layer 12 and unstable gravity.

[0049] Furthermore, in one embodiment, the spacing distance between adjacent counterweight bags 7 can be 300-500 cm.

[0050] Furthermore, refer to Figure 1 In one embodiment, the counterweight bag 7 is filled with an adsorption metal layer 8. The adsorption metal layer 8 has good heavy metal adsorption ability. In this embodiment, by providing the adsorption metal layer 8, the release of heavy metals in the silt sediment can be further reduced.

[0051] Wherein, the counterweight bag 7 can be a permeable fiber bag, and the adsorption metal layer 8 can be one of a volcanic rock layer, a steel slag layer, a red mud layer or a gravel layer.

[0052] Refer to Figure 2 Figure 2 , in one embodiment, the in-situ repair ecological blanket further includes a plurality of suture fixing lines 9, and the plurality of suture fixing lines 9 sequentially pass through the first structural reinforcement layer 5, the upper bottom layer 3, the repair part 1, the lower bottom layer 4 and the second structural reinforcement layer 6 and are fixed. In this embodiment, by providing a plurality of suture fixing lines 9, each part (such as the repair part 1) in the in-situ repair ecological blanket can be fixed, further enhancing the structural strength of the in-situ repair ecological blanket.

[0053] In summary, an in-situ repair ecological blanket for treating water pollution provided by the present application includes a repair part 1 and a plurality of plant parts 2. The repair part 1 includes a gravity covering layer 11 and an adsorption layer 12 connected in sequence. The gravity covering layer 11 is used to deposit the adsorption layer 12 at the bottom of the water body, and the adsorption layer 12 is used to adsorb heavy metals in the water body. A plurality of accommodation openings 13 are sequentially and spaced apart on the repair part 1, and a plurality of plant parts 2 are correspondingly arranged in the plurality of accommodation openings 13. By providing the gravity covering layer 11 and the adsorption layer 12, the present application can reduce the release flux of heavy metals in the silt sediment by more than 90%, achieving the effect of stabilizing the underwater bottom mud. At the same time, it cooperates with the submerged plants in the plant part 2 to repair the heavy metals in the water body. Moreover, by sequentially and spaced apart a plurality of accommodation openings 13 on the repair part 1 and arranging a plurality of plant parts 2 in the corresponding accommodation openings 13 of the repair part 1 instead of on the adsorption layer 12, not only can it prevent the submerged plants of the plant part 2 from damaging the adsorption layer 12 and ensure the integrity of the adsorption layer 12, but also it can reduce the overall thickness of the entire in-situ repair ecological blanket, thus facilitating folding, transportation and low cost.

[0054] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An in-situ restoration ecological blanket for treating water pollution, characterized in that: include: The repair part includes a gravity covering layer and an adsorption layer connected in sequence, wherein the gravity covering layer is used to deposit the adsorption layer at the bottom of the water body, and the adsorption layer is used to adsorb heavy metals in the water body, and the repair part is provided with a plurality of receiving ports spaced in sequence; A plurality of plant parts are correspondingly arranged in a plurality of the receiving openings.

2. The in-situ restoration ecological blanket for treating water pollution according to claim 1, characterized in that: The spacing distance between adjacent plant parts was set to 20-25 cm.

3. The in-situ restoration ecological blanket for treating water pollution according to claim 1, characterized in that: The plant parts include: A grass planting bag, which is arranged in the receiving opening; Submerged plants are arranged in the grass planting bag.

4. The in-situ restoration ecological blanket for treating water pollution according to claim 1, characterized in that: The in-situ restoration ecological blanket also includes: An upper bottom layer, which is arranged on a side of the gravity covering layer away from the adsorption layer; The lower bottom layer is arranged on the side of the adsorption layer away from the gravity covering layer.

5. The in-situ restoration ecological blanket for treating water pollution according to claim 4, characterized in that: The upper bottom layer and the lower bottom layer are both degradable plant fiber layers, and the thickness of the upper bottom layer and the lower bottom layer is set to 3-5 cm.

6. The in-situ restoration ecological blanket for treating water pollution according to claim 4, characterized in that: The in-situ restoration ecological blanket also includes: A first structural reinforcement layer, which is disposed on a side of the upper bottom layer away from the gravity cover layer; The second structure reinforcement layer is arranged on a side of the lower base layer away from the adsorption layer.

7. The in-situ restoration ecological blanket for treating water pollution according to claim 1, characterized in that: The in-situ restoration ecological blanket also includes: A plurality of weight bags are sequentially and spaced apart on the repairing part, and the weight bags are filled with an adsorption metal layer.

8. The in-situ restoration ecological blanket for treating water pollution according to claim 5, characterized in that: The spacing between adjacent weight bags is set to 300-500cm.

9. The in-situ restoration ecological blanket for treating water pollution according to claim 1, characterized in that: The adsorption layer is a biochar layer, the thickness of the adsorption layer is set to 1-1.2 cm, and the specific surface area of ​​the adsorption layer is set to 20 m 2 / g, the total pore volume of the adsorption layer is 0.1-0.6cm 3 / g.

10. The in-situ restoration ecological blanket for treating water pollution according to claim 6, characterized in that: The in-situ repair ecological blanket also includes a plurality of suture fixing lines, which sequentially pass through the first structural reinforcement layer, the upper bottom layer, the repair part, the lower bottom layer and the second structural reinforcement layer and are fixed.

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