Rain and sewage diversion structure of flood control ditch in heavy metal pollution plot area

Abstract

The utility model discloses a rain and sewage diversion structure of a flood control ditch in a heavy metal pollution plot area. The rain and sewage diversion structure comprises the flood control ditch, an HDPE anchoring part, an HDPE impermeable film B and a water collecting well. A plurality of HDPE anchoring parts are fixedly connected to the inner wall of the flood control ditch, an HDPE impermeable film B is jointly pasted to the upper portions of the HDPE anchoring parts, and a gap between the HDPE impermeable film B and the inner wall of the flood control ditch is a water collecting ditch. A water collecting well is excavated in the low-lying position of the flood prevention ditch, and the water collecting ditch is communicated with the water collecting well. The HDPE impermeable film B is arranged on the inner side of the flood prevention ditch to prevent seepage water of the flood prevention ditch from flowing out of the external environment, the seepage water flows into the water collecting well through the water collecting ditch below the HDPE impermeable film B to be recycled, and rainwater flows away through the upper portion of the HDPE impermeable film B, so that rainwater and sewage diversion of the area is achieved, and the problems that the seepage water quality of the flood prevention ditch in the area becomes yellow, heavy metal exceeds the standard, and the flood prevention effect is poor are solved. And environmental pollution is caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface water pollution control in heavy metal polluted plots, and specifically relates to a rainwater and sewage diversion structure of a flood control ditch in a heavy metal polluted plot area. Background Art

[0002] A heavy metal mining enterprise has an area that was once a reed marsh. Later, a large amount of tailings flowed into the area, as well as a lot of slag and construction waste. There is a flood control ditch running through the area. Many parts of the flood control ditch seep water all year round, especially after rain. The water seeps a lot for a long time. The seepage water is yellow and contains excessive heavy metals. The seepage water flows out of the flood control ditch to the outside environment, causing environmental pollution. The polluted land is difficult to repair, and the replacement workload is very large and the cost is very high. It is also difficult to find a legal place to go. Under the current conditions, the most economical and feasible way is to carry out effective environmental control to prevent environmental pollution in the surrounding area.

[0003] Therefore, it is very important to provide a rainwater and sewage diversion structure for flood control ditches to achieve rainwater and sewage diversion in the flood control ditches in the area, and solve the problems of yellow water quality and excessive heavy metals in the flood control ditches in the area, and seepage water flowing into the external environment through the flood control ditches, causing environmental pollution. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a rainwater and sewage diversion structure for flood control ditches in heavy metal polluted areas in response to the deficiencies of the above-mentioned existing water pollution control technology for heavy metal polluted areas. The rainwater and sewage diversion structure for flood control ditches is affixed with an HDPE anti-seepage membrane (i.e., HDPE anti-seepage membrane B) on the inner wall of the flood control ditch through HDPE anchors, thereby blocking the seepage water in the flood control ditch from flowing out to the external environment. The seepage water flows into the water collection well through the water collection ditch below the HDPE anti-seepage membrane B for recovery, and the rainwater flows away through the upper part of the HDPE anti-seepage membrane B, thereby realizing the diversion of rainwater and sewage in the area, and solving the problems of yellow water quality and excessive heavy metals in the seepage water in the flood control ditch in the area, and the seepage water flowing out of the external environment through the flood control ditch, causing environmental pollution.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0006] A flood control ditch rainwater and sewage diversion structure in a heavy metal polluted land area, comprising a flood control ditch, a HDPE anchor, a HDPE anti-seepage membrane B and a water collection well;

[0007] A plurality of HDPE anchors are fixedly connected to the inner wall of the flood control ditch, and a HDPE anti-seepage membrane B is commonly pasted on the upper part of the plurality of HDPE anchors, and the gap between the HDPE anti-seepage membrane B and the inner wall of the flood control ditch is a water collection ditch;

[0008] A water collection well is excavated at the low-lying part of the flood control ditch, and the water collection ditch is connected with the water collection well.

[0009] As a further improved technical solution of the utility model, the HDPE anchor comprises a strip-shaped HDPE anti-seepage membrane A, an expansion tube and a pressure strip, and the strip-shaped HDPE anti-seepage membrane A is anchored on the inner wall of the flood control ditch through the expansion tube and the pressure strip.

[0010] As a further improved technical solution of the utility model, the HDPE anti-seepage membrane A has a thickness of 1.5 mm and a width of 10 cm; the layering strip is an aluminum alloy layering strip with a width of 1 cm.

[0011] As a further improved technical solution of the utility model, the strip-shaped HDPE anti-seepage membrane A in the HDPE anchor is extended and laid along the length direction of the flood control ditch.

[0012] As a further improved technical solution of the utility model, a plurality of HDPE anti-seepage membranes A are arranged at intervals on the bottom wall and the side wall inside the flood control ditch, and a HDPE anti-seepage membrane B is glued to the plurality of HDPE anti-seepage membranes A together.

[0013] As a further improved technical solution of the utility model, the surrounding walls of the water collection well are paved with bricks, gravel and river sand with good water permeability from the inside to the outside.

[0014] As a further improved technical solution of the utility model, a submersible pump with automatic water level control is installed inside the water collection well.

[0015] As a further improved technical solution of the utility model, a wall is provided around the top of the water collection well, and the top of the wall is flush with the ground; the wall is located on the inner side of the flood control ditch, and HDPE anchors are fixedly connected to the outer wall of the wall, and the HDPE anchors on the wall and the HDPE anchors on the inner wall of the flood control ditch are jointly pasted with the HDPE anti-seepage membrane B.

[0016] HDPE anti-seepage membrane A and HDPE anti-seepage membrane B are HDPE anti-seepage membranes with different widths.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model adheres the HDPE anti-seepage membrane B on the inner wall of the flood control ditch through the HDPE anchor, which effectively realizes the separation of rainwater and sewage in the area, that is, rainwater flows away through the upper part of the HDPE anti-seepage membrane B, and sewage flows into the collection well through the collection ditch below the HDPE anti-seepage membrane B for recovery.

[0019] 2. The utility model uses the method of sticking the HDPE anti-seepage membrane B to the HDPE anti-seepage membrane A in the HDPE anchor, which effectively solves the problem that the HDPE anti-seepage membrane B cannot be directly pasted on the inside of the wet and seeping flood control ditch due to the continuous water seepage in the flood control ditch all year round.

[0020] 3. The utility model can effectively collect the seepage water of the flood control ditch below the HDPE anti-seepage membrane B by digging a flood control ditch seepage collection well, that is, a water collection well. The seepage water flows into the water collection well through the water collection ditch below the HDPE anti-seepage membrane B for recycling, which better solves the problem of yellow water quality and excessive heavy metals in the flood control ditch seepage water in the area, and the seepage water flows out of the external environment through the flood control ditch, causing environmental pollution;

[0021] 4. The structure of the utility model can also effectively reduce the groundwater level in the heavy metal contaminated area and reduce the risk of heavy metal-containing groundwater flowing into the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the HDPE anti-seepage membrane B pasted on the inner side of the flood control ditch of the utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the seepage collection well for digging flood control ditches.

[0024] Figure 3 for Figure 2 A partial enlarged view of middle A. DETAILED DESCRIPTION

[0025] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0026] This embodiment provides a flood control ditch rainwater and sewage diversion structure in a heavy metal polluted area, including a flood control ditch 1, a HDPE anchor 3, a HDPE anti-seepage membrane B2 and a water collection well 5.

[0027] like Figure 1 As shown, a plurality of HDPE anchors 3 are fixedly connected to the inner wall of the flood control ditch, a HDPE anti-seepage membrane B2 is commonly pasted on the top of the plurality of HDPE anchors 3, and the gap between the HDPE anti-seepage membrane B2 and the inner wall of the flood control ditch 1 is a water collecting ditch 4.

[0028] like Figure 2 As shown, a water collection well 5 is excavated in the low-lying area of ​​the flood control ditch 1, and the water collection ditch 4 is connected to the water collection well 5 through a channel, and the channel is located below the HDPE anti-seepage membrane B2.

[0029] In this embodiment, the HDPE anchor 3 includes a strip-shaped HDPE anti-seepage membrane A, an expansion tube and a pressure strip. The strip-shaped HDPE anti-seepage membrane A is anchored on the inner wall of the flood control ditch 1 through the expansion tube and the pressure strip.

[0030] In this embodiment, the HDPE anti-seepage membrane A has a thickness of 1.5 mm and a width of 10 cm; the layering strip is an aluminum alloy layering strip with a width of 1 cm.

[0031] In this embodiment, the strip-shaped HDPE anti-seepage membrane A in the HDPE anchor 3 is laid extending along the length direction of the flood control ditch 1 .

[0032] In this embodiment, a plurality of HDPE anti-seepage membranes A are arranged at intervals on the bottom wall and the side wall inside the flood control ditch 1, and a HDPE anti-seepage membrane B2 is glued to the plurality of HDPE anti-seepage membranes A.

[0033] In this embodiment, Figure 3 As shown, the surrounding walls of the water collection well 5 are paved with bricks 7, gravel 8 and river sand 9 with good water permeability from the inside to the outside. The paving method of bricks 7, gravel 8 and river sand 9 adopts the existing technology.

[0034] In this embodiment, a submersible pump 10 for automatic water level control is installed inside the water collection well 5 .

[0035] In this embodiment, a wall 6 is provided around the top of the water collection well 5, and the top of the wall 6 is flush with the ground; the wall 6 is located on the inner side of the flood control ditch 1, and an HDPE anchor 3 is fixedly connected to the outer wall of the wall 6. The HDPE anchor 3 on the wall 6 and the HDPE anchor 3 on the inner wall of the flood control ditch 1 are jointly pasted with an HDPE anti-seepage membrane B2.

[0036] The construction process of the rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated land area of ​​this embodiment is as follows:

[0037] S1. The inner wall of the flood control ditch 1 is painted and leveled; HDPE anchors 3 are fixed on the bottom and sides of the flood control ditch 1; HDPE anti-seepage membrane B2 is pasted on the HDPE anchors 3; there is a gap between the flood control ditch 1 and the HDPE anti-seepage membrane B2 to form a water collection ditch 4.

[0038] S2, such as Figure 2 As shown, a water collection well 5 is excavated in the low-lying part of the flood control ditch 1; the water collection ditch 4 is connected to the water collection well 5 through the excavated channel; then, bricks 7 with good water permeability are built around the water collection well 5, and the outside is filled with crushed stones 8 and river sand 9 in sequence; a submersible pump 10 with automatic water level control is installed in the water collection well 5; the water collection well 5 collects the sewage flowing out of the water collection ditch 4 and lowers the groundwater level in the area. Therefore, the sewage seeping from the flood control ditch 1 flows into the channel through the water collection ditch 4, and seeps into the inside of the water collection well 5 through the bricks 7, crushed stones 8, and river sand 9, and realizes rainwater and sewage separation with the rainwater on the HDPE anti-seepage membrane B2.

[0039] Among them, the inner wall of the flood control ditch 1 is painted and leveled. If the inner wall of the flood control ditch 1 is relatively flat, it can be ignored. If it is not flat, a wire mesh skeleton is hung and anti-seepage cement mortar is used for overall painting.

[0040] Among them, HDPE anchors 3 are fixed on the bottom and sides of the flood control ditch 1, that is, the HDPE anti-seepage membrane A with a thickness of 1.5 mm is cut into 10 cm wide strips, that is, a strip-shaped HDPE anti-seepage membrane A is formed, and then an expansion tube is used to pass through a 1 cm wide aluminum alloy strip, the strip-shaped HDPE anti-seepage membrane A and the inner wall of the flood control ditch 1 for anchoring.

[0041] The gaps formed between adjacent HDPE anchors 3 and between the HDPE anti-seepage membrane B and the bottom of the flood control ditch are the water collection ditch 4 .

[0042] The HDPE anti-seepage membrane B2 is pasted, that is, during pasting, the surfaces of the strip-shaped HDPE anti-seepage membranes A in the plurality of HDPE anchors 3 are all coated with glue; and then the HDPE anti-seepage membranes B2 are pasted together.

[0043] Among them, the HDPE anchor 3 is fixed to the inner side of the flood control ditch 1 through an expansion tube, and is fixed relatively firmly; the HDPE anti-seepage membrane B2 and the HDPE anchor 3 can be effectively adhered; since the flood control ditch 1 is constantly seeping water all year round, the problem that the HDPE anti-seepage membrane B2 cannot be adhered to the moist and seeping inner side of the flood control ditch 1 is effectively solved.

[0044] Among them, the digging of the water collection well 5, that is, digging the water collection well 5 in the low-lying part of the flood control ditch 1, ensures that the sewage seeping from the flood control ditch 1 can flow into the water collection well 5. The surrounding area of ​​the water collection well 5 is built with bricks 7 with good water permeability, and the outside is filled with gravel 8 and river sand 9, which has a certain filtering effect on the sewage.

[0045] Wherein, a water level automatic control submersible pump 10 is installed in the water collection well 5, and a suitable submersible pump is selected according to the amount of seepage, and the sewage recovered by the submersible pump is comprehensively utilized or sent to a sewage treatment station.

[0046] The collection well 5 is located in the low-lying area of ​​the flood control ditch 1, and can effectively collect sewage seeping out of the flood control ditch 1. The sewage seeping out of the flood control ditch 1 flows into the collection well 5 through the collection ditch 4; the sewage collected in the collection well 5 is recovered by the submersible pump 10 with automatic water level control; at the same time, the groundwater level in the heavy metal contaminated area is lowered, reducing the risk of heavy metal-containing groundwater flowing out of the external environment.

[0047] The HDPE anti-seepage membrane A and the HDPE anti-seepage membrane B of this embodiment are both HDPE anti-seepage membranes.

[0048] Application Implementation:

[0049] A heavy metal mining enterprise has a heavy metal pollution area with a flood control ditch 1 running through it. Many parts of the flood control ditch 1 seep water all year round, especially after rain, when the amount of seepage is large for a long time. The water quality of the seepage water is yellow and the heavy metal content exceeds the standard, causing environmental pollution.

[0050] By sticking HDPE anti-seepage membrane B on the inner side of the flood control ditch 1, water seepage in the flood control ditch 1 is blocked, and the seepage water flows into the water collection well 5 through the water collection ditch 4 below the HDPE anti-seepage membrane B for recovery, and the rainwater flows away through the upper part of the HDPE anti-seepage membrane B, thereby realizing the separation of rainwater and sewage in the area, which better solves this problem. At the same time, it can also effectively reduce the groundwater level in the heavy metal contaminated area and reduce the risk of heavy metal-containing groundwater flowing out of the external environment.

[0051] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A rainwater and sewage diversion structure for flood control ditches in heavy metal polluted areas, characterized in that: Including flood control ditch, HDPE anchor, HDPE anti-seepage membrane B and water collection well; A plurality of HDPE anchors are fixedly connected to the inner wall of the flood control ditch, and a HDPE anti-seepage membrane B is commonly pasted on the upper part of the plurality of HDPE anchors, and the gap between the HDPE anti-seepage membrane B and the inner wall of the flood control ditch is a water collection ditch; A water collection well is excavated at the low-lying part of the flood control ditch, and the water collection ditch is connected with the water collection well.

2. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated land area according to claim 1 is characterized in that: The HDPE anchoring piece comprises a strip-shaped HDPE anti-seepage membrane A, an expansion tube and a pressure strip, and the strip-shaped HDPE anti-seepage membrane A is anchored on the inner wall of the flood control ditch through the expansion tube and the pressure strip.

3. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated area according to claim 2 is characterized in that: The HDPE anti-seepage membrane A has a thickness of 1.5 mm and a width of 10 cm; the layering strip is an aluminum alloy layering strip with a width of 1 cm.

4. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated area according to claim 3 is characterized in that: The strip-shaped HDPE anti-seepage membrane A in the HDPE anchor is laid extending along the length direction of the flood control ditch.

5. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated land area according to claim 4 is characterized in that: A plurality of HDPE anti-seepage membranes A are arranged at intervals on the bottom wall and the side wall inside the flood control ditch, and a HDPE anti-seepage membrane B is glued to the plurality of HDPE anti-seepage membranes A.

6. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated area according to claim 5 is characterized in that: The surrounding walls of the water collection well are paved with bricks, crushed stones and river sand with good water permeability from the inside to the outside.

7. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated area according to claim 6 is characterized in that: A submersible pump with automatic water level control is installed inside the water collection well.

8. The rainwater and sewage diversion structure of the flood control ditch in the heavy metal contaminated area according to claim 7 is characterized in that: A wall is also provided around the top of the water collection well, and the top of the wall is flush with the ground; the wall is located inside the flood control ditch, and HDPE anchors are fixedly connected to the outer wall of the wall. The HDPE anchors on the wall and the HDPE anchors on the inner wall of the flood control ditch are jointly pasted with the HDPE anti-seepage membrane B.

Images