Electrolysis gas production pressurization and siphon coupled automatic pollution discharge electrokinetic remediation device and method

Abstract

The invention discloses an automatic blowdown electrokinetic remediation device and method coupling electrolysis gas production pressurization and siphoning. The device comprises a siphoning upward-discharging type conductive drainage plate, a direct-current stabilized power supply and a vacuum self-priming pump. The siphon upward-drainage type conductive drainage plate is made of a flexible material and comprises a vertical drainage plate, a top end U-shaped plate and a flexible water guide pipe. Vertical water guide grooves are formed in the surfaces of the vertical drainage plates, vertical water guide pipes are arranged in the vertical drainage plates, and bottom water storage grooves are formed in the bottoms; the flexible water guide pipe is connected with the top end U-shaped plate and the vacuum self-sucking pump; the bottom water storage tank is communicated with the vertical water guide grooves and the vertical water guide pipes and used for collecting the soil pore water solution guided by the vertical water guide grooves, conveying the soil pore water solution to the top end U-shaped plate from the vertical water guide pipes under internal electrolysis gas production pressurization and external vacuum negative pressure, and meanwhile discharging the soil pore water solution to the flexible water guide pipes under the siphoning action of the top end U-shaped plate. The problems that existing polluted soil / bottom mud electric guiding, discharging and repairing are tedious in procedure, difficult to overhaul, large in workload, high in cost and the like are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil / sediment pollution control, and in particular to an automatic sewage discharge electric repair device and method coupled with electrolysis gas production, pressurization and siphoning. Background Art

[0002] The widespread and severe nature of soil and sediment contamination poses multiple threats to agricultural production, ecosystems, and human health. Highly effective remediation technologies are urgently needed to restore ecological functions and ensure environmental safety and sustainable development. Electroremediation, a novel in-situ remediation technology, offers significant advantages for remediating low-permeability contaminated soil and sediment. It not only efficiently removes active pollutants from soil and sediment, but is also unaffected by external factors such as climate and the environment.

[0003] Existing electroremediation technology primarily involves collecting liquid into a soil / sediment pore solution collection tank under the influence of electric field forces and gravity, and then extracting the collected liquid through pumping and other methods for further processing. The inventors of this application have discovered through long-term practice that the gas generated by electrolysis during the electroremediation process can increase the pressure in the soil / sediment pore solution collection tank and discharge the collected soil / sediment pore solution through an air duct. Summary of the Invention

[0004] The present invention provides an automatic sewage discharge electric repair device and method coupled with electrolytic gas production pressurization and siphon. By coupling electrolytic gas production pressurization and siphon self-drainage, appropriately supplemented by vacuum negative pressure extraction, automatic sewage discharge of soil / sediment is achieved under the action of electric repair, so as to simplify the process, reduce the difficulty of construction and maintenance, and reduce the costs of manpower, material resources and energy consumption in the pumping process.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The siphon pump is a kind of electric drainage device coupled with electrolytic gas production pressurization and siphon automatic sewage discharge, comprising: a siphon upper discharge conductive drainage plate, a DC voltage-regulated power supply and a vacuum self-priming pump; the siphon upper discharge conductive drainage plate is made of flexible material, comprising a vertical drainage plate, a top U-shaped plate and a flexible water guide pipe; a vertical water guide groove is provided on the surface of the vertical drainage plate, a vertical water guide pipe is provided inside, and a bottom water storage groove is provided at the bottom; one end of the flexible water guide pipe is connected to the top U-shaped plate, and the other end is connected to the vacuum self-priming pump; the vertical water guide groove is used to divert the soil pore water solution on the surface of the vertical drainage plate; the bottom water storage groove is connected to the vertical water guide groove and the vertical water guide pipe, and is used to collect the soil pore water solution diverted by the vertical water guide groove, and transport the soil pore solution from the vertical water guide pipe to the top U-shaped plate under the internal electrolytic gas production pressurization and external vacuum negative pressure, and at the same time, the top U-shaped plate is siphoned and discharged to the flexible water guide pipe. Furthermore, the length of the siphon upper discharge conductive drainage board can be cut as needed, wherein the vertical drainage board width is 0.3m-1.2m, the top U-shaped plate bottom width is 0.1m-0.3m, the height is 0.2m-0.5m, the thickness is 1cm-1.5cm, the vertical water pipe diameter is 0.5m-0.8cm, and the flexible water pipe diameter is 1.5cm-3cm.

[0007] Furthermore, the end length of the top U-shaped plate can be trimmed and adjusted so that the flexible water pipe forms a certain inclination angle after being connected to the top U-shaped plate, which facilitates the gravity collection of the solution discharged from the soil / sediment by electrolysis pressurization-self-priming siphon into the sewage pool.

[0008] Furthermore, a conductive mud-blocking and water-permeable membrane is attached to the surface of the siphon upper-drainage conductive drainage board, and the vertical water guide channel guides the soil pore water solution that passes through the mud-blocking and water-permeable membrane on the surface of the vertical drainage board.

[0009] Furthermore, a wire is led out from one end of the top U-shaped plate to connect to a DC regulated power supply.

[0010] A method for an automatic sewage discharge electric repair device coupled with electrolytic gas production, pressurization and siphoning is performed using the device, and the method comprises:

[0011] Pre-activate heavy metal pollutants in the soil and stir it evenly into a muddy state using a tiller;

[0012] Use mechanical laying equipment to insert the U-shaped part of the siphon upper drainage conductive drainage board into the soil / sediment, where the siphon upper drainage conductive drainage board is arranged in parallel with an interval of 50-100cm;

[0013] Connect the vacuum self-priming pump and the flexible water pipe, and connect the wires at one end of two adjacent U-shaped plates arranged in parallel to the positive and negative poles of the DC regulated power supply respectively;

[0014] Turn on the DC regulated power supply and set the DC voltage to 50-100V. The high-concentration pollutants in the soil / sediment pore water at both ends of the siphon upper drainage plate will migrate and accumulate to both sides under the action of the electric field. After passing through the mud-retaining and permeable membrane, they will be stored in the water storage tank at the bottom along the vertical water guide trough.

[0015] In the initial stage of drainage, negative pressure is drawn by a vacuum self-priming pump to assist drainage. Afterwards, under the synergistic effect of electrolytic gas production and U-tube siphon, the solution stored in the bottom water tank is discharged into the soil / sediment in sequence along the vertical water guide pipe, the top U-shaped plate and the flexible water guide pipe, thereby achieving automatic separation of pollutants from the soil / sediment. Using the above technical device and method, the present invention discloses the following technical effects:

[0016] (1) For the first time, a unique drainage system design of "electrolysis gas production pressurization-vacuum self-priming pump negative pressure-siphon gravity flow" was proposed, which realized the automatic drainage of soil / sediment under the action of electric remediation, improved the stability and controllability of the remediation process, and had significant technical novelty.

[0017] (2) Through innovative structural design, the vertical water guide trough, vertical water guide pipe, bottom water storage tank, top U-shaped plate, and flexible water guide pipe are connected in sequence, making full use of the electrolytic gas production pressurization, siphon drainage and inclined gravity flow characteristics of the U-shaped plate. This creative design realizes the automatic discharge of soil / sediment pollutants, significantly reducing labor and energy costs. It is simple to operate and easy to maintain, and has wide practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 An overall schematic diagram of an electric drainage device coupled with electrolytic gas production pressurization and siphon automatic sewage drainage provided by an embodiment of the present invention;

[0020] Figure 2 A schematic structural diagram of a siphon-type conductive drainage plate provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 AA section view and its partial enlarged schematic diagram;

[0022] Figure 4 for Figure 2 BB cross-section view in.

[0023] In the figure: 1-siphon upper discharge conductive drainage board, 2-DC regulated power supply, 3-vacuum self-priming pump, 1-1-vertical drainage board, 1-2-top U-shaped plate, 1-3-flexible water guide pipe, 1-11-vertical water guide trough, 1-12-bottom water storage trough, 1-13-vertical water guide pipe, 1-14-mud retaining membrane, 1-15-conductor. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, taking the remediation of contaminated soil with a thickness of 30 cm as an example.

[0026] like Figure 1-4 As shown, an automatic sewage discharge electric repair device coupled with electrolytic gas production pressurization and siphoning includes: a siphon upper discharge conductive drainage plate 1, a DC voltage-stabilized power supply 2, and a vacuum self-priming pump 3.

[0027] The siphon upward-discharge conductive drainage board 1 includes a vertical drainage board 1-1, a top U-shaped board 1-2, and a flexible water pipe 1-3.

[0028] The vertical drainage board 1-1 includes a vertical water guide groove 1-11, a bottom water storage groove 1-12, a vertical water guide pipe 1-13, a mud-blocking and water-permeable membrane 1-14, a conductor 1-15, etc.

[0029] The siphon upper discharge conductive drainage board 1 is made of flexible material and can be cut to length as needed. The vertical drainage board 1-1 is 0.3m wide, and the top U-shaped board 1-2 is 0.1m wide at the bottom, 0.2m high, and 1cm thick.

[0030] The vertical water guide trough 1-11 is arranged on the surface of the vertical drainage board 1-1, and is used to guide the soil pore water solution that passes through the mud-blocking and permeable membrane 1-14 on the surface of the vertical drainage board 1-1; the bottom water storage tank 1-12 is connected with the vertical water guide trough 1-11 and the vertical water guide pipe 1-13 (diameter 0.5 cm), and is used to collect the soil pore water solution, and can transport the soil pore solution from the vertical water guide pipe 1-13 to the top U-shaped plate 1-2 under internal electrolysis gas production pressurization and external vacuum negative pressure, and at the same time, the top U-shaped plate 1-2 is siphoned and discharged to the flexible water guide pipe 1-3 (diameter 2 cm).

[0031] One end of the flexible water pipe 1 - 3 is connected to the top U-shaped plate 1 - 2 of the siphon upper discharge conductive drainage board 1 , and the other end is connected to the vacuum self-priming pump 3 .

[0032] The end length of the top U-shaped plate 1-2 can be trimmed and adjusted, so that the flexible water pipe 1-3 can be connected to it to form a certain inclination angle, which is convenient for the solution discharged from the soil / sediment by electrolysis pressurization-self-priming siphon to be collected by gravity into the sewage pool.

[0033] The liquid level of the sewage pool can be a mobile box embedded in the ground, or a pit can be directly dug and covered with an impermeable membrane. The height of the upper edge of the sewage pool is lower than the height of the bottom water storage tank 1-12 of the siphon upper discharge conductive drainage board 1.

[0034] The surface of the siphon upper discharge conductive drainage board 1 is attached with a conductive mud-blocking and water-permeable membrane 1-14, and a wire 1-15 is led out from one end of the U-shaped board 1-4, which can be used to connect to a DC regulated power supply 2.

[0035] The working principle of the present invention is as follows: through the action of electric field force, the soil pore solution is migrated and enriched near the siphon upper discharge type conductive drainage board 1, and the soil pore solution enriched on the surface of the siphon upper discharge type conductive drainage board 1 passes through the mud-retaining and water-permeable membrane 1-14 under the action of gravity, hydraulic gradient, etc., and is guided through the vertical water guide 1-11 on the surface of the vertical drainage board 1-1 and stored in the bottom water storage tank 1-12, and then transported to the top U-shaped plate 1-2 along the vertical water guide pipe 1-13 with the assistance of internal electrolysis gas production pressurization and external vacuum negative pressure, and the siphon effect of the top U-shaped plate 1-2 can continuously siphon the soil pore solution stored in the bottom water storage tank 1-12 to the flexible water guide pipe 1-3, and finally discharged to the sewage pool by gravity in the inclined flexible water guide pipe 1-3.

[0036] An automatic sewage discharge electric repair method coupled with electrolytic gas production, pressurization and siphoning is implemented using the above-mentioned device, and the method comprises the following steps:

[0037] (1) Pre-activate heavy metals and other pollutants in the soil and stir them evenly into a muddy state using a tiller.

[0038] (2) Using mechanical laying equipment, insert the U-shaped plate 1-2 below the siphon upper discharge conductive drainage board 1 into the soil / sediment, wherein the siphon upper discharge conductive drainage board 1 is arranged in parallel with an interval of 100 cm.

[0039] (3) Connect the vacuum self-priming pump 3 and the flexible water pipe 1-3, and connect the wires 1-15 at one end of two adjacent U-shaped plates arranged in parallel and spaced apart to the positive and negative poles of the DC regulated power supply 2 respectively.

[0040] (4) Turn on the DC regulated power supply 2, and set the DC voltage to 100V. The high-concentration pollutants in the soil / sediment pore water at both ends of the siphon upper discharge conductive drainage board 1 can migrate and enrich to both sides under the action of the electric field, and then pass through the mud-retaining permeable membrane 1-14 and are stored in the bottom water storage tank 1-12 along the vertical water guide trough 1-11.

[0041] (5) In the initial stage of drainage, negative pressure 3 is drawn by a vacuum self-priming pump to assist drainage. Afterwards, under the synergistic effect of electrolytic gas production and U-shaped tube siphon, the solution stored in the bottom water tank 1-12 can be discharged from the soil / bottom mud to the sewage collection tank in sequence along the vertical water pipe 1-13, the top U-shaped plate 1-2 and the flexible water pipe 1-3, thereby realizing the automatic separation of pollutants from the soil / bottom mud.

[0042] The present invention has achieved the following significant beneficial effects through its unique structural design and working mode:

[0043] 1. Innovative drainage system design: This innovative drainage system combines electrolytic gasification for pressurization, vacuum self-priming pumping for negative pressure, and siphonic gravity flow, combining electrolytic gasification for pressurization, vacuum self-priming pumping for negative pressure, and siphonic gravity flow. During the electric remediation process, electrolytic gasification increases the pressure in the bottom water storage tank. Combined with the initial negative pressure assistance of the vacuum self-priming pump and the siphon effect of the U-shaped plate, this system automatically drains the pore solution from the soil / sediment, improving the stability and controllability of the remediation process and demonstrating its technical novelty.

[0044] 2. Simplified Process and Reduced Costs: This device utilizes an innovative structure that sequentially connects a vertical water channel, a vertical water pipe, a bottom water storage tank, a top U-shaped plate, and a flexible water pipe. This automatically separates pollutants from soil / sediment, eliminating the need for complex manual operations and extensive labor input. Compared to traditional pumping methods, this system reduces labor, material, and energy consumption, easing construction and maintenance complexity, and effectively lowering costs, making it widely practical and widely applicable.

[0045] 3. Improve remediation efficiency and effect: Under the action of the electric field, high-concentration pollutants in the soil / sediment pore water migrate and enrich toward the siphon-type conductive drainage board. The unique structural design of the device realizes automatic sewage discharge, so that pollutants can be separated from the soil / sediment more efficiently, significantly improving the electric conductive drainage effect of contaminated soil / sediment, and providing a more effective solution for soil / sediment pollution control.

[0046] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0047] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An electric drainage device that couples electrolytic gas production pressurization and siphon automatic sewage discharge, characterized in that: include: Siphon upper-drainage conductive drainage board, DC voltage-regulated power supply and vacuum self-priming pump; the siphon upper-drainage conductive drainage board is made of flexible material, including a vertical drainage board, a top U-shaped board and a flexible water guide pipe; a vertical water guide groove is provided on the surface of the vertical drainage board, a vertical water guide pipe is provided inside, and a bottom water storage tank is provided at the bottom; one end of the flexible water guide pipe is connected to the top U-shaped board, and the other end is connected to the vacuum self-priming pump; the vertical water guide groove is used to divert the soil pore water solution on the surface of the vertical drainage board; the bottom water storage tank is connected to the vertical water guide groove and the vertical water guide pipe, and is used to collect the soil pore water solution diverted by the vertical water guide groove, and transport the soil pore solution from the vertical water guide pipe to the top U-shaped board under internal electrolytic gas production pressurization and external vacuum negative pressure, and at the same time, it is discharged to the flexible water guide pipe by the siphon action of the top U-shaped board.

2. The automatic sewage discharge electric repair device coupled with electrolytic gas production, pressurization and siphoning according to claim 1 is characterized in that: The length of the siphon upper discharge conductive drainage board can be cut as needed, wherein the vertical drainage board width is 0.3m-1.2m, the top U-shaped plate bottom width is 0.1m-0.3m, the height is 0.2m-0.5m, the thickness is 1cm-1.5cm, the vertical water pipe diameter is 0.5m-0.8cm, and the flexible water pipe diameter is 1.5cm-3cm.

3. The automatic sewage discharge electric repair device coupled with electrolytic gas production, pressurization and siphoning according to claim 1 is characterized in that: The end length of the top U-shaped plate can be trimmed and adjusted so that the flexible water pipe forms a certain tilt angle after being connected to the top U-shaped plate, which facilitates the gravity collection of the solution discharged from the soil / sediment by electrolysis pressurization-self-priming siphon into the sewage pool.

4. The automatic sewage discharge electric repair device coupled with electrolytic gas production, pressurization and siphoning according to claim 1 is characterized in that: The surface of the siphon upper discharge conductive drainage board is attached with a conductive mud-blocking and water-permeable membrane, and the vertical water guide channel guides the soil pore water solution that passes through the mud-blocking and water-permeable membrane on the surface of the vertical drainage board.

5. The automatic sewage discharge electric repair device coupled with electrolytic gas production, pressurization and siphoning according to claim 1 is characterized in that: A wire is led out from one end of the top U-shaped plate to connect to a DC regulated power supply.

6. A method for an automatic sewage discharge electric repair device coupled with electrolytic gas production, pressurization and siphoning, characterized in that: The method is carried out using the device according to any one of claims 1 to 5, comprising: Pre-activate heavy metal pollutants in the soil and stir it evenly into a muddy state using a tiller; Use mechanical laying equipment to insert the U-shaped part of the siphon upper drainage conductive drainage board into the soil / sediment, where the siphon upper drainage conductive drainage board is arranged in parallel with an interval of 50-100cm; Connect the vacuum self-priming pump and the flexible water pipe, and connect the wires at one end of two adjacent U-shaped plates arranged in parallel to the positive and negative poles of the DC regulated power supply respectively; Turn on the DC regulated power supply and set the DC voltage to 50-100V. The high-concentration pollutants in the soil / sediment pore water at both ends of the siphon upper drainage plate will migrate and accumulate to both sides under the action of the electric field. After passing through the mud-retaining and permeable membrane, they will be stored in the water storage tank at the bottom along the vertical water guide trough. In the initial stage of drainage, negative pressure is drawn by a vacuum self-priming pump to assist drainage. Afterwards, under the synergistic effect of electrolytic gas production pressurization and U-tube siphon, the solution stored in the bottom water tank is discharged into the soil / sediment along the vertical water pipe, the top U-shaped plate and the flexible water pipe in turn, realizing the automatic separation of pollutants from the soil / sediment.

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