Lake body slope bank ecological water environment restoration ion separation system and restoration method thereof

Abstract

The application discloses a kind of lake body slope bank ecological water environment restoration ion separation system and its restoration method, belong to ecological water environment restoration technical field.The system is set on the slope surface from lake side road to lake surface, including by high and low sequentially set on the slope surface, and all longitudinal distribution sewage sedimentation ditch and multistage ion separation ditch;Sewage sedimentation ditch and each stage ion separation ditch are sequentially communicated by drain pipe series connection;The ion separation ditch of the bottom of slope surface is communicated with lake surface by overflow, and by first sedimentation then multistage delayed ion separation method, the problem of dynamic rainwater pollution on the slope surface between city road and lake surface is solved, and the ecological water environment restoration is easy to operate and implement.

Description

Technical Field

[0001] This invention belongs to the field of ecological water environment restoration, and more specifically, relates to an electro-ion separation system and restoration method for ecological water environment restoration of lake slopes. Background Technology

[0002] Currently, in the ecological restoration of urban lakes, most methods combine chemical treatment with ecological restoration to treat wastewater. However, in practice, the treatment work is quite difficult due to differences in the degree of water pollution and the types of pollutants. For example, excessive use of chemicals may further pollute the water. At the same time, it is not easy to distinguish acidic substances in turbid rainwater, resulting in poor overall effectiveness. The distribution of ecological plants on the lake slopes also affects the improvement of water quality. In some industrial cities, there are many ways to treat the water environment, but the general approach is to use chemical methods combined with plant purification. This method can be very effective in treating fixed water pollution, but it is not very effective in treating dynamic rainwater on the slopes from roads to lakes.

[0003] According to the search, Chinese patent publication number CN 116217019 Patent document A, published on June 6, 2023, discloses an apparatus and method for purifying acidic wastewater from mines. The apparatus includes a treatment tank, a reagent dosing component, a mixing component, and a filter press component. The reagent dosing component includes a filling disc engaged inside the treatment tank, a transmission screw threaded to the filling disc, a stirring rod engaged on the transmission screw, and a power motor providing power to the transmission screw. The mixing component includes a mesh cylinder inside the treatment tank and two lifting plates slidably engaged inside the mesh cylinder. The two lifting plates are threaded to the transmission screw. The filter press component includes a filter sleeve inside the treatment tank, an outer sleeve outside the filter sleeve, a filter rod engaged inside the outer sleeve, a pressure plate engaged with the filter sleeve, and a filter press motor located on the bottom surface of the treatment tank with a filter screw threaded to the pressure plate on its output shaft. This invention requires the addition of a large amount of reagent, which, when dealing with unstable water pollution, can easily lead to secondary pollution or result in poor purification effects. Summary of the Invention

[0004] 1. The problem to be solved

[0005] To address the problem of secondary pollution caused by dynamic rainwater on slopes leading to lakes in existing treatment methods, this invention provides an electro-ion separation system and its restoration method for ecological water environment restoration of lake slopes. This system uses a "physical + plant" approach to restore the water environment without the need for chemical additives, thus avoiding the problem of secondary pollution from chemical treatments.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An electro-ion separation system for ecological water environment restoration of lake slopes is installed on the slope from the lakeside road to the lake surface. It includes sewage sedimentation ditches and multi-stage electro-ion separation ditches arranged longitudinally from high to low on the slope. The sewage sedimentation ditches and each stage of electro-ion separation ditches are connected in series by drainage pipes. The electro-ion separation ditches at the bottom of the slope are connected to the lake surface through an overflow outlet. Pollutants are adsorbed and separated by a first sedimentation followed by a multi-stage delayed electro-ion separation method, thereby solving the problem of ecological water environment restoration of dynamic rainwater pollution on the slope between urban roads and the lake surface. The system is simple to operate and easy to implement.

[0009] As a further improvement to the technical solution, vegetation is planted between the multi-stage electro-ion separation ditches. Through the adsorption of the vegetation roots, the dynamic sewage generated by rainwater is further delayed and slowed down to flow into the lake. In conjunction with the multi-stage electro-ion separation ditches, the dynamic rainwater pollution on the slope can be thoroughly purified.

[0010] As a further improvement to the technical solution, the electro-ion separation trench is equipped with positive and negative electrode plates that are vertically distributed and fixed at the bottom of the trench. The positive and negative electrode plates adsorb the positive and negative ions in the polluted water in a classified manner, which is highly targeted and has a better purification effect.

[0011] As a further improvement to the technical solution, the positive and negative plates in two adjacent electro-ion separation trenches are staggered to avoid potential short circuit problems.

[0012] As a further improvement to the technical solution, it also includes a photovoltaic power generation system, which is electrically connected to the positive and negative plates in each stage of the electro-ion separation trench via wires; providing stable and continuous power energy to the multi-stage electro-ion separation trench that is far from the city's power supply system.

[0013] As a further improvement to the technical solution, the openings of the sewage sedimentation ditch and the various levels of electro-ion separation ditch are all covered with grid-shaped covers to avoid the risk of stepping into the air.

[0014] As a further improvement to the technical solution, the sewage sedimentation ditch is divided into multiple sedimentation chambers by longitudinally distributed baffles fixed to the bottom of the ditch. Each sedimentation chamber is connected to the others by an overflow outlet. The height of each overflow outlet from the bottom of the ditch decreases sequentially along the slope, which can achieve the purpose of multi-level classification and sedimentation of pollutants.

[0015] As a further improvement to the technical solution, two pairs of positive and negative electrode plates are staggered in the electro-ion separation trench at the bottom of the slope. During the final discharge of sewage, multiple pairs are set according to the content of pollutants in the sewage to achieve the purpose of thorough purification.

[0016] As a further improvement to the technical solution, the multi-stage electro-ion separation trench is three-stage, consisting of the first, second, and third electro-ion separation trenches from top to bottom; the vegetation consists of shrub vegetation, tree vegetation, low-lying vegetation, and aquatic vegetation from top to bottom, which separates pollutant ions in dynamic sewage and adsorbs them onto the positive and negative plates. At the same time, combined with the delayed purification of the vegetation, the ecological water environment restoration of urban lake slopes is completed, forming a comprehensive electro-ion separation method for the ecological water environment restoration of urban lake slopes.

[0017] An electro-ion separation remediation method for lake slope ecological aquatic environment restoration, the specific steps of which are as follows:

[0018] S1. After the sewage flows into the sewage sedimentation ditch, it flows into the first electro-ion separation ditch through the drain pipe.

[0019] S2. In the first ionization trench, positive ions in the sewage are adsorbed on the negative electrode plate of the first ionization trench, and negative ions in the sewage are adsorbed on the positive electrode plate of the first ionization trench, thus undergoing preliminary purification. Excess sewage flows into the second ionization trench.

[0020] S3. In the second ionization trench, positive ions in the sewage are adsorbed on the negative electrode plate of the second ionization trench, and negative ions in the sewage are adsorbed on the positive electrode plate of the second ionization trench for further purification. Excess sewage flows into the third ionization trench.

[0021] S4. In the third ionization trench, positive ions in the sewage are adsorbed onto the negative electrode plate of the third ionization trench, and negative ions in the sewage are adsorbed onto the positive electrode plate of the third ionization trench, thus undergoing fine purification. The purified water is then discharged into the lake.

[0022] S5. The aquatic plant community in the lake further purifies the water. The shrub, tree and low-lying plant communities purify some of the pollutants in the rainwater through plant purification. The excess rainwater flows to the first, second and third electro-ion separation ditches, where it is treated before being discharged into the lake, completing the entire process of sewage purification.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] (1) The electro-ion separation system and its restoration method for lake slope ecological water environment restoration of the present invention use the "physical + plant" method to restore the water environment, which can more easily block the rapid flow of dynamic sewage and thoroughly purify it before it flows into the lake. It is simple to operate and easy to implement.

[0026] (2) The electrical energy required for electron-ion separation in this invention is provided by a photovoltaic power generation system, which is both environmentally friendly and energy-saving. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the electro-ion separation system for the ecological water environment restoration of the lake slope in a specific embodiment;

[0028] Figure 2 This is a plan view of the electro-ion separation system for the ecological water environment restoration of the lake slope in a specific embodiment;

[0029] Figure 3 This is a schematic diagram of a sewage sedimentation ditch in a specific embodiment;

[0030] Figure 4 This is a schematic diagram of the first electro-ion separation channel in a specific embodiment;

[0031] Figure 5 This is a schematic diagram of the second electro-ion separation channel in a specific embodiment.

[0032] Figure 6 This is a schematic diagram of the third electro-ion separation channel in a specific embodiment.

[0033] In the diagram: 1. Sewage sedimentation ditch; 2. First electro-ion separation ditch; 3. Second electro-ion separation ditch; 4. Third electro-ion separation ditch; 5. Lakeside road; 6. Shrub vegetation; 7. Tree vegetation; 8. Low vegetation; 9. Aquatic vegetation; 10. Photovoltaic power generation system; 11. Drainage pipe;

[0034] 1-1. Sedimentation ditch cover; 1-2. Sedimentation chamber; 1-3. Sedimentation ditch wall; 1-4. Sedimentation ditch drain outlet;

[0035] 2-1. Cover plate of the first electro-ion separation trench; 2-3. Inlet of the first electro-ion separation trench; 2-4. Outlet of the cover plate of the first electro-ion separation trench; 2-5. Negative electrode plate of the first electro-ion separation trench; 2-6. Positive electrode plate of the first electro-ion separation trench;

[0036] 3-1. Cover plate of the second electro-ion separation trench; 3-3. Inlet of the second electro-ion separation trench; 3-4. Outlet of the cover plate of the second electro-ion separation trench; 3-5. Negative electrode plate of the second electro-ion separation trench; 3-6. Positive electrode plate of the second electro-ion separation trench;

[0037] 4-1, Cover plate of the third electro-ion separation trench; 4-3, Inlet of the third electro-ion separation trench; 4-4, Outlet of the cover plate of the third electro-ion separation trench; 4-5, Negative electrode plate of the third electro-ion separation trench; 4-6, Positive electrode plate of the third electro-ion separation trench. Detailed Implementation

[0038] Exemplary embodiments of the present invention are described in detail below. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be implemented and various changes may be made to the invention without departing from its spirit and scope. The more detailed description of embodiments of the invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to suggest the best mode for carrying out the invention and to enable those skilled in the art to practice it. Therefore, the scope of the invention is defined only by the appended claims.

[0039] Example 1

[0040] This embodiment describes an electro-ion separation system for ecological water environment restoration of lake slopes. It is applied to the slope of a lakeside road 5 to the lake surface in a city. The system includes sewage sedimentation ditches 1 and multi-stage electro-ion separation ditches arranged longitudinally on the slope from high to low. The sewage sedimentation ditches 1 and each stage of the electro-ion separation ditches are connected in series by drainage pipes 11. The electro-ion separation ditches at the bottom of the slope are connected to the lake surface through an overflow outlet.

[0041] This embodiment presents an electro-ion separation system for the ecological water environment restoration of lake slopes. In the treatment of groundwater generated by dynamic rainwater from urban roads to slopes, pollutants are adsorbed and separated by a multi-stage delayed electro-ion separation method after sedimentation. The number of stages of the electro-ion separation trench can be selected according to the pollution level of the wastewater. This solves the problem of ecological water environment restoration for dynamic rainwater pollution on slopes between urban roads and lakes. The system is simple to operate and easy to implement.

[0042] Example 2

[0043] The electro-ion separation system for lake slope ecological water environment restoration in this embodiment has the same basic structure as in Embodiment 1, with the difference or improvement being that vegetation is planted between the multi-stage electro-ion separation trenches. Through the adsorption of the vegetation roots, the dynamic wastewater generated by rainwater is further delayed and slowed down from flowing into the lake. In conjunction with the multi-stage electro-ion separation trenches, it can thoroughly purify the dynamic rainwater pollution on the slope. The electro-ion separation trenches are equipped with longitudinally distributed positive and negative electrode plates fixed vertically to the bottom of the trench. These plates classify and adsorb positive and negative ions in the polluted water, resulting in targeted and better purification effects. The positive and negative electrode plates in adjacent electro-ion separation trenches are staggered to avoid potential short-circuit problems.

[0044] It also includes a photovoltaic power generation system 10, which is electrically connected to the positive and negative plates in each stage of the electro-ion separation trench via wires; providing stable and continuous power energy for the multi-stage electro-ion separation trenches located far from the city's power supply system. The openings of the sewage sedimentation ditch 1 and each stage of the electro-ion separation trench are covered with grid-like covers to prevent the risk of falling into the gap. The sewage sedimentation ditch 1 is divided into multiple sedimentation chambers 1-2 by longitudinally distributed partitions fixed vertically to the bottom of the ditch and the front and rear sedimentation ditch walls 1-3, such as... Figure 3 As shown, the structure is divided into four sedimentation chambers 1-2 by three partitions. These chambers are interconnected by overflow outlets, with the height of each overflow outlet from the bottom of the ditch decreasing sequentially along the slope. This design allows for multi-stage sedimentation of pollutants. At least two pairs of positive and negative electrodes are staggered within the electro-ion separation ditch at the bottom of the slope. Multiple pairs are then installed based on the pollutant content of the wastewater during final discharge to ensure thorough purification.

[0045] Example 3

[0046] The electro-ion separation system for lake slope ecological water environment restoration in this embodiment has the same basic structure as in Embodiment 2, but the difference or improvement is that: the multi-stage electro-ion separation trench is three-stage, from top to bottom as the first electro-ion separation trench 2, the second electro-ion separation trench 3, and the third electro-ion separation trench 4; the vegetation from top to bottom is shrub vegetation group 6, tree vegetation group 7, low vegetation group 8, and aquatic vegetation group 9, so that pollutant ions in dynamic sewage are separated and adsorbed on the positive and negative plates. At the same time, combined with the delayed purification of the vegetation group, the ecological water environment restoration of urban lake slope is completed, forming a comprehensive electro-ion separation method for the ecological water environment restoration of urban lake slope.

[0047] like Figure 1-6 As shown, from the lakeside road 5 to the lake surface, the slope from top to bottom consists of sewage sedimentation ditch 1, shrub vegetation group 6, first ion separation ditch 2, tree vegetation group 7, second ion separation ditch 3, low vegetation group 8, third ion separation ditch 4, and aquatic vegetation group 9. There is no vertically fixed photovoltaic power generation system 10 on the slope where shrub vegetation group 6 and low vegetation group 8 are located, which provides power energy for the first ion separation ditch 2, the second ion separation ditch 3, and the third ion separation ditch 4.

[0048] The openings of the sewage sedimentation ditch 1, the first electro-ion separation ditch 2, the second electro-ion separation ditch 3, and the third electro-ion separation ditch 4 are respectively covered by sedimentation ditch cover plate 1-1, first electro-ion separation ditch cover plate 2-1, second electro-ion separation ditch cover plate 3-1, and third electro-ion separation ditch cover plate 4-1.

[0049] The sedimentation outlet 1-4 of the sewage sedimentation ditch 1 is connected to the inlet 2-3 of the first electro-ion separation ditch 2 through a drain pipe 11. The first electro-ion separation ditch outlet 2-4 of the first electro-ion separation ditch 2 is connected to the inlet 3-3 of the second electro-ion separation ditch 3 through a drain pipe 11. The second electro-ion separation ditch outlet 3-4 of the second electro-ion separation ditch 3 is connected to the inlet 4-3 of the third electro-ion separation ditch 4 through a drain pipe 11. The outlet 4-4 of the third electro-ion separation ditch discharges the treated water into the lake.

[0050] The electro-ion separation remediation method for lake slope ecological water environment restoration in this embodiment includes the following specific steps:

[0051] S1. After the sewage flows into the sewage sedimentation ditch 1, it passes through the sewage sedimentation ditch outlets 1-4 and flows into the first electro-ion separation ditch 2 through the drain pipe 11.

[0052] S2. In the first ionization trench 2, positive ions in the sewage are adsorbed on the negative electrode plate 2-5 of the first ionization trench, and negative ions in the sewage are adsorbed on the positive electrode plate 2-6 of the first ionization trench, thus undergoing preliminary purification. Excess sewage flows into the second ionization trench 3.

[0053] S3. In the second ionization trench 3, positive ions in the sewage are adsorbed on the negative electrode plate 3-5 of the second ionization trench, and negative ions in the sewage are adsorbed on the positive electrode plate 3-6 of the second ionization trench for further purification. Excess sewage flows into the third ionization trench 4.

[0054] S4. In the third ionization trench 4, positive ions in the sewage are adsorbed onto the negative electrode plate 4-5 of the third ionization trench, and negative ions in the sewage are adsorbed onto the positive electrode plate 4-6 of the third ionization trench, thus undergoing fine purification. The purified water is then discharged into the lake.

[0055] S5. The aquatic plant community 9 in the lake further purifies the water. The shrub vegetation community 6, tree vegetation community 7, and low-lying plant community 8 purify some of the pollutants in the rainwater through plant purification. Different pollutants are adsorbed by different vegetation communities. At the same time, they can also slow down the flow rate of rainwater as much as possible. Excess rainwater flows to the first electro-ion separation trench 2, the second electro-ion separation trench 3, and the third electro-ion separation trench 4 for treatment before being discharged into the lake, completing the entire process of sewage purification. Positive ions in sewage are adsorbed by negative electrode plates, and negative ions in sewage are adsorbed by positive electrode plates. After the electro-ion separation trench has been working for a period of time or according to the actual adsorption of the electrode plates, the covers of each electro-ion separation trench are opened to clean each electrode plate and reuse it.

[0056] The electro-ion separation remediation method for lake slope ecological water environment restoration in this embodiment uses a "physical + plant" approach to adsorb and remediate the water environment. This method is more effective in blocking the rapid flow of dynamic sewage while thoroughly purifying the sewage before it flows back into the lake. It is simple to operate and easy to implement.

Claims

1. A lake body slope bank ecological water environment restoration ion separation system, which is arranged on a slope surface from a lake side road (5) to a lake surface, characterized in that: The sewage precipitation groove (1) and the multi-stage ion separation groove are arranged on the slope surface in sequence from high to low and longitudinally distributed; the sewage precipitation groove (1) and each stage of the ion separation groove are sequentially connected in series through the drain pipe (11); the ion separation groove at the bottom of the slope is connected with the lake surface through the overflow port; The multi-stage ion separation groove is planted with vegetation; The ion separation groove is provided with the positive plate and the negative plate which are longitudinally distributed and vertically fixed on the groove bottom; The positive plate and the negative plate in the adjacent two ion separation grooves are arranged in a staggered manner; The photovoltaic power generation system (10) is electrically connected with the positive plate and the negative plate in each stage of the ion separation groove through the wire; The groove opening of the sewage precipitation groove (1) and each stage of the ion separation groove is covered by the grid-shaped cover plate; The sewage precipitation groove (1) is divided into a plurality of precipitation cavities (1-2) by the longitudinal distribution and vertical fixation of the baffle on the groove bottom; the precipitation cavities (1-2) are sequentially communicated through the overflow port, and the height of each overflow port from the groove bottom decreases along the slope gradient; The positive plate and the negative plate in the ion separation groove at the bottom of the slope are two pairs of plates arranged in a staggered manner; The multi-stage ion separation groove is three stages, which are the first ion separation groove (2), the second ion separation groove (3) and the third ion separation groove (4) from top to bottom; the vegetation is the shrub vegetation group (6), the arbor vegetation group (7), the low-lying plant group (8) and the aquatic plant group (9) from top to bottom.

2. The ion separation repair method of the lake body slope bank ecological water environment repair of the separation system according to claim 1, characterized in that, The steps are: S1, after the sewage flows into the sewage precipitation groove (1), it flows into the first ion separation groove (2) through the drain pipe (11); S2, in the first ion separation groove (2), the positive ions in the sewage are adsorbed on the negative plate (2-5) of the first ion separation groove, the negative ions in the sewage are adsorbed on the positive plate (2-6) of the first ion separation groove, and the sewage is preliminarily purified, and the excess sewage flows into the second ion separation groove (3); S3, in the second ion separation groove (3), the positive ions in the sewage are adsorbed on the negative plate (3-5) of the second ion separation groove, the negative ions in the sewage are adsorbed on the positive plate (3-6) of the second ion separation groove, and the sewage is further purified, and the excess sewage flows into the third ion separation groove (4); S4, in the third ion separation groove (4), the positive ions in the sewage are adsorbed on the negative plate (4-5) of the third ion separation groove, the negative ions in the sewage are adsorbed on the positive plate (4-6) of the third ion separation groove, and the sewage is finely purified, and the completed water is discharged into the lake; S5, the aquatic plant group (9) in the lake further purifies the water, and the shrub vegetation group (6), the arbor vegetation group (7) and the low-lying plant group (8) purify part of the pollutants in the rainwater through plant purification, and the excess rainwater is discharged into the lake after being treated by the first ion separation groove (2), the second ion separation groove (3) and the third ion separation groove (4), thereby completing the whole process of sewage purification.

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