Contaminated soil remediation and soilless culture integrated device

Abstract

The invention discloses a contaminated soil remediation and soilless culture integrated device, and relates to the technical field of resource recycling equipment. The device comprises a blending tank, a base is fixedly connected to the bottom of the blending tank, a soil remediation mechanism is arranged on the top of the base, and a leacheate treatment mechanism is arranged on the rear side of the soil remediation mechanism; a mixing mechanism is arranged at the top of the blending tank and comprises a transverse plate fixedly connected to the top of the blending tank. By arranging the first stirring plate which is horizontally designed and the second stirring plate which is obliquely designed, a composite stirring flow field in the horizontal and vertical directions is formed under the driving of the motor, so that layering and stirring dead zones which are easy to occur in a traditional stirring device are effectively broken, additives such as nutritive salt and trace elements are quickly and uniformly dispersed in leacheate, and the leacheate quality is improved. The homogenization degree of the nutrient solution is obviously improved, so that soilless culture crops can obtain the irrigation solution with balanced nutrients, and the culture quality and the crop yield are improved.

Description

Technical Field

[0001] This invention belongs to the field of resource recycling equipment technology, and in particular relates to an integrated device for contaminated soil remediation and soilless cultivation. Background Technology

[0002] Among contaminated soil remediation technologies, leaching remediation is widely used due to its short treatment cycle and wide applicability. Its principle is to extract and separate pollutants from the soil through leaching solution, and then carry out subsequent treatment and resource utilization of the leached soil and leaching solution. In order to improve remediation efficiency and realize resource recycling, an integrated device design combining contaminated soil remediation with hydroponics has emerged.

[0003] Currently, integrated devices typically include a soil remediation mechanism, a leaching solution collection and treatment mechanism, and a nutrient solution preparation mechanism for hydroponics. The workflow is as follows: after the contaminated soil is remediated by leaching, the leaching solution is recovered and treated through processes such as sedimentation, filtration, and adsorption to remove pollutants. Then, the nutrients required by plants are added to the purified leaching solution to prepare a nutrient solution suitable for hydroponics, which is ultimately used to irrigate hydroponically grown crops, thereby achieving synergy between remediation and production.

[0004] In existing integrated devices, there are still significant technical bottlenecks in the uniform distribution of nutrient solution during operation. In common devices, the purified leaching liquid needs to be mixed with additives such as nutrients and trace elements to form a nutrient solution with stable physicochemical properties and uniform distribution of components. To ensure the mixing effect, mechanical stirring devices are equipped. However, these stirrers are often installed horizontally. This structural design can easily lead to fluid stratification or the formation of stirring dead zones during the mixing process. This is especially true when the concentration of nutrient solution is high or the viscosity changes. The phenomenon of lighter components floating and heavier components sinking is more obvious, making it difficult to achieve sufficient homogenization of nutrients. Due to uneven mixing, when the nutrient solution is delivered to soilless cultivation crops, the distribution of key nutrients such as nitrogen, phosphorus, potassium and trace elements is not balanced, affecting the quality of soilless cultivation.

[0005] To address these issues, we provide an integrated device for contaminated soil remediation and hydroponics. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated device for contaminated soil remediation and hydroponics. By setting up a mixing mechanism, it solves the problem of uneven nutrient solution distribution during the use of existing integrated devices, which affects the quality of hydroponics.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0008] This invention relates to an integrated device for contaminated soil remediation and hydroponics, comprising a mixing tank, a base fixedly connected to the bottom of the mixing tank, a soil remediation mechanism on the top of the base, and a leaching solution treatment mechanism on the rear side of the soil remediation mechanism; a mixing mechanism is provided on the top of the mixing tank, the mixing mechanism comprising a horizontal plate fixedly connected to the top of the mixing tank, a bracket fixedly connected to the top of the horizontal plate, a protective filter cartridge fixedly connected to the bottom of the bracket, a motor fixedly connected to the top of the protective filter cartridge, a stirring rod fixedly connected to the output end of the motor, a first stirring plate fixedly connected to one side of the stirring rod, a second stirring plate fixedly connected to the other side of the stirring rod, and an aeration component disposed on one side of the stirring rod.

[0009] The invention is further configured such that the aeration assembly includes a fixed box rotatably connected to the top surface of the stirring rod, a rotating rod rotatably connected to the bottom of the fixed box, a first gear fixedly connected to the top of the rotating rod, an air inlet pipe connected to the top of the fixed box, a movable pipe rotatably connected to the bottom of the air inlet pipe and located inside the fixed box, a fixed pipe rotatably connected to the bottom of the movable pipe, an aerator connected to the bottom of the fixed pipe, a one-way valve sleeved on the surface of the aerator, a second gear fixedly connected to the surface of the movable pipe, and turbine blades fixedly connected to the inside of the movable pipe.

[0010] The present invention is further configured such that the bottom of the rinsing liquid treatment mechanism is fixedly connected to the base, the second stirring plate is inclined, and the first stirring plate is horizontal.

[0011] The present invention is further configured such that the bottom of the fixed pipe extends to the bottom of the fixed box and is connected to the aerator, and the fixed pipe is fixedly connected to the fixed box.

[0012] The present invention is further configured such that the one-way valve is located on the surface of the air outlet end of the aerator, and the first gear and the second gear are meshed.

[0013] The present invention is further configured such that there is a gap between the turbine blades and the movable tube, which can ensure normal airflow.

[0014] The present invention is further configured such that a dustproof net is fixedly connected to the top of the air intake pipe, and the diameter of the second gear is smaller than that of the first gear.

[0015] The present invention has the following beneficial effects.

[0016] 1. This invention, by setting up a horizontally designed first stirring plate and an inclined second stirring plate, forms a composite stirring flow field in the horizontal and vertical directions under the drive of a motor. This effectively breaks the stratification and stirring dead zones that are prone to occur in traditional stirring devices, allowing additives such as nutrients and trace elements to be quickly and evenly dispersed in the leaching solution. This significantly improves the homogenization of the nutrient solution, thereby ensuring that soilless cultivation crops obtain nutrient-balanced irrigation solution, improving cultivation quality and crop yield.

[0017] 2. This invention links the aeration component with the mechanical stirring structure, simultaneously drawing in air and releasing tiny bubbles during the stirring process. The mixture is stirred from the bottom of the tank upwards, further enhancing the turbulence effect of the liquid and preventing solid particles from settling and separating from the components. This structure is particularly suitable for liquid-solid mixing systems with high viscosity or large density differences, achieving efficient mixing of gas, liquid, and solid phases.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional diagram of an integrated device for contaminated soil remediation and soilless cultivation.

[0021] Figure 2 This is a cross-sectional view of the mixing tank in an integrated device for contaminated soil remediation and hydroponics.

[0022] Figure 3 This is a cross-sectional view of the fixed box in an integrated device for contaminated soil remediation and soilless cultivation.

[0023] Figure 4 This is a cross-sectional view of the movable tube in an integrated device for contaminated soil remediation and soilless cultivation.

[0024] Figure 5 This is an integrated device for contaminated soil remediation and hydroponics. Figure 3 A magnified view of A in the middle.

[0025] In the attached diagram: 1. Mixing tank; 2. Base; 3. Soil remediation mechanism; 4. Leachate treatment mechanism; 5. Mixing mechanism; 51. Horizontal plate; 52. Support; 53. Protective filter cartridge; 54. Motor; 55. Stirring rod; 56. First stirring plate; 57. Second stirring plate; 58. Aeration assembly; 581. Fixed box; 582. Rotating rod; 583. First gear; 584. Air inlet pipe; 585. Movable pipe; 586. Fixed pipe; 587. Aerator; 588. One-way valve; 589. Second gear; 5810. Turbine blades; 6. Dustproof net. Detailed Implementation

[0026] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Example 1 Please see Figures 1-5 This invention relates to an integrated device for contaminated soil remediation and hydroponics, comprising a mixing tank 1, a base 2 fixedly connected to the bottom of the mixing tank 1, a soil remediation mechanism 3 on the top of the base 2, and a leaching liquid treatment mechanism 4 on the rear side of the soil remediation mechanism 3; a mixing mechanism 5 is provided on the top of the mixing tank 1, the mixing mechanism 5 comprising a horizontal plate 51 fixedly connected to the top of the mixing tank 1, a bracket 52 fixedly connected to the top of the horizontal plate 51, a protective filter cartridge 53 fixedly connected to the bottom of the bracket 52, a motor 54 fixedly connected to the top of the inner part of the protective filter cartridge 53, a stirring rod 55 fixedly connected to the output end of the motor 54, a first stirring plate 56 fixedly connected to one side of the stirring rod 55, a second stirring plate 57 fixedly connected to the other side of the stirring rod 55, and an aeration component 58 disposed on one side of the stirring rod 55.

[0028] As a preferred embodiment of the above: the mixing tank 1 is connected to a connecting pipe on the side away from the aerator 587, and a connecting flange is fixedly connected to the surface of the connecting pipe for connection to the hydroponic irrigation pipeline. The soil remediation mechanism 3 and the leaching solution treatment mechanism 4 are both existing mature technologies, and their components and operating principles will not be described in detail here. The mixing tank 1 is used to hold and treat the leaching solution and nutrient solution, and is the core container for the preparation of hydroponic nutrient solution. The base 2 supports the entire device and maintains structural stability. The soil remediation mechanism 3 performs leaching remediation on the contaminated soil, separating the pollutants from the soil through the leaching solution. The leaching solution treatment mechanism 4 purifies the leaching solution after leaching. The first stirring plate removes contaminants and prepares the nutrient solution for subsequent preparation. The mixing mechanism 5 is responsible for uniformly mixing the purified leaching liquid with nutrients to form a nutrient solution suitable for hydroponics. The horizontal plate 51 supports the components of the mixing mechanism 5, and the bracket 52 supports the motor 54 and the stirring assembly to ensure structural stability. The protective filter cartridge 53 protects the motor 54. The motor 54 provides power to drive the stirring rod 55 to rotate. The stirring rod 55 connects the motor 54 and the stirring plate to transmit power and realize the stirring function. The first stirring plate 56 stirs horizontally to enhance the horizontal flow of the liquid, and the second stirring plate 57 stirs at an angle to generate vertical circulation, eliminate stirring dead corners, and improve the mixing uniformity.

[0029] Example 2 Please see Figures 1-5 Based on Embodiment 1, the aeration assembly 58 includes a fixed box 581 rotatably connected to the top surface of the stirring rod 55, a rotating rod 582 rotatably connected to the bottom of the fixed box 581, a first gear 583 fixedly connected to the top of the rotating rod 582, an air inlet pipe 584 communicating with the top of the fixed box 581, a movable pipe 585 rotatably connected to the bottom of the air inlet pipe 584 and located inside the fixed box 581, a fixed pipe 586 rotatably connected to the bottom of the movable pipe 585, an aerator 587 communicating with the bottom of the fixed pipe 586, a one-way valve 588 sleeved on the surface of the aerator 587, a second gear 589 fixedly connected to the surface of the movable pipe 585, and a fixed valve 588 fixedly connected to the movable pipe 585. The turbine blades 5810 inside 585, the bottom of the scrubbing liquid treatment mechanism 4 is fixedly connected to the base 2, the second stirring plate 57 is inclined, the first stirring plate 56 is horizontal, the bottom of the fixed pipe 586 extends to the bottom of the fixed box 581 and is connected to the aerator 587, the fixed pipe 586 and the fixed box 581 are fixedly connected, the one-way valve 588 is located on the surface of the air outlet end of the aerator 587, the first gear 583 and the second gear 589 mesh with each other, there is a gap between the turbine blades 5810 and the movable pipe 585 to ensure normal air flow, the top of the air inlet pipe 584 is fixedly connected to a dustproof net 6, and the diameter of the second gear 589 is smaller than that of the first gear 583.

[0030] As a preferred embodiment of the above: the top of the stirring rod 55 is located inside the fixed box 581; the output end of the motor 54 extends into the fixed box 581 and is connected to the stirring rod 55; the output end of the motor 54 is rotatably connected to the protective filter cartridge 53 and the fixed box 581 via bearings; the bottom of the stirring rod 55 extends into the mixing tank 1; the stirring rod 55 is rotatably connected to the fixed box 581 and the horizontal plate 51 via bearings; the first stirring plate 56 and the second stirring plate 57 are both located inside the mixing tank 1; the bottom of the fixed box 581 is fixed to the horizontal plate 51. The rotating rod 582 is rotatably connected to the fixed box 581 via a bearing at its bottom. Synchronous pulleys are fixedly connected to the top surface of the stirring rod 55 and the surface of the rotating rod 582. The two synchronous pulleys are connected by a synchronous belt drive, which drives the synchronous belt through tooth meshing. This is a mature existing technology and will not be elaborated further. The movable pipe 585 is rotatably connected to the air inlet pipe 584 and the fixed pipe 586 via bearings. The air outlet of the aerator 587 is fixedly connected to the inner side of the bottom of the mixing tank 1, and its bottom is sealed. One side of the aerator 587... A backwash pipe is connected, and one-way valves 588 are fitted at the junctions between the backwash pipe and the aerator 587. These valves are used to periodically backwash the aerator 587 to prevent clogging. The aeration assembly 58 introduces air into the mixing tank 1 to generate bubbles, assisting in stirring, enhancing the mixing effect, and preventing sedimentation. The fixed box 581 houses the transmission and air intake components in the aeration assembly 58. The rotating rod 582 transmits the power of the stirring rod 55 to the first gear 583. The first gear 583 drives the second gear 589 to rotate, transmitting power to... The movable pipe 585 and the air inlet pipe 584 introduce external air into the aeration system. The movable pipe 585 drives the turbine blades 5810 to rotate, generating negative pressure and drawing in air. The fixed pipe 586 delivers the air from the movable pipe 585 to the aerator 587. The aerator 587 releases the air evenly to the bottom of the mixing tank 1 in the form of bubbles. The one-way valve 588 prevents liquid from flowing back into the aeration system. The second gear 589 is driven by the first gear 583, which drives the movable pipe 585 to rotate. The dustproof net 6 prevents dust from entering and contaminating the turbine blades 5810.

[0031] The working principle of this invention is as follows: The purified eluent from the eluent treatment mechanism 4 is transported to the mixing tank 1, and additives such as nutrients and trace elements are added according to the specified ratio. The motor 54 is started, and its output shaft drives the stirring rod 55 to rotate, which in turn drives the first stirring plate 56 and the second stirring plate 57 fixed on the stirring rod 55 to rotate synchronously. The first stirring plate 56 mainly generates horizontal shear and circulation, propelling the liquid in the tank laterally; the second stirring plate 57, due to its tilt angle, forms an axial flow vertically during rotation, promoting vertical circulation of the liquid. The superposition of the two-phase flow fields creates a three-dimensional stirring effect, quickly breaking down local concentration gradients and achieving initial mixing.

[0032] When the stirring rod 55 rotates, it drives the rotating rod 582 to rotate via a synchronous pulley and synchronous belt at its top. The first gear 583 installed on the rotating rod 582 meshes with the second gear 589 on the movable tube 585, driving the movable tube 585 and the internal turbine blades 5810 to rotate. When the turbine blades 5810 rotate, a negative pressure is formed at the inlet of the air intake pipe 584, drawing in external air. The air is transported through the movable tube 585 and the fixed tube 586 to the aerator 587 at the bottom, where it is evenly sprayed into the bottom of the mixing tank 1 in the form of microbubbles. The released bubbles generate turbulence and vortices during their ascent, further agitating the liquid, especially driving the heavier components at the bottom to move upwards and exchange with the liquid in the middle and upper parts, preventing sedimentation. The synergistic effect of the bubbles and mechanical stirring achieves a high degree of homogenization of the components of the nutrient solution in a short time. The evenly mixed nutrient solution is then transported to the hydroponically grown plants through the connecting pipe on the side of the mixing tank 1. The one-way valve 588 prevents liquid backflow, and the backwash pipe equipped with aerator 587 can be cleaned regularly to prevent blockage, thereby improving the uniformity and efficiency of nutrient solution preparation and ensuring the quality of hydroponics.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated device for contaminated soil remediation and hydroponics, comprising a mixing tank (1), characterized in that: The mixing tank (1) is fixedly connected to a base (2) at the bottom, and a soil remediation mechanism (3) is provided on the top of the base (2). A leaching liquid treatment mechanism (4) is provided on the rear side of the soil remediation mechanism (3). The mixing tank (1) is provided with a mixing mechanism (5) at the top. The mixing mechanism (5) includes a horizontal plate (51) fixedly connected to the top of the mixing tank (1), a bracket (52) fixedly connected to the top of the horizontal plate (51), a protective filter cartridge (53) fixedly connected to the bottom of the bracket (52), a motor (54) fixedly connected to the top of the protective filter cartridge (53), a stirring rod (55) fixedly connected to the output end of the motor (54), a first stirring plate (56) fixedly connected to one side of the stirring rod (55), a second stirring plate (57) fixedly connected to the other side of the stirring rod (55), and an aeration component (58) provided on one side of the stirring rod (55).

2. The integrated device for contaminated soil remediation and hydroponics according to claim 1, characterized in that: The aeration assembly (58) includes a fixed box (581) rotatably connected to the top surface of the stirring rod (55), a rotating rod (582) rotatably connected to the bottom of the fixed box (581), a first gear (583) fixedly connected to the top of the rotating rod (582), an air inlet pipe (584) connected to the top of the fixed box (581), a movable pipe (585) rotatably connected to the bottom of the air inlet pipe (584) and located inside the fixed box (581), a fixed pipe (586) rotatably connected to the bottom of the movable pipe (585), an aerator (587) connected to the bottom of the fixed pipe (586), a one-way valve (588) sleeved on the surface of the aerator (587), a second gear (589) fixedly connected to the surface of the movable pipe (585), and a turbine blade (5810) fixedly connected to the inside of the movable pipe (585).

3. The integrated device for contaminated soil remediation and hydroponics according to claim 1, characterized in that: The bottom of the rinsing liquid treatment mechanism (4) is fixedly connected to the base (2), the second stirring plate (57) is inclined, and the first stirring plate (56) is horizontal.

4. The integrated device for contaminated soil remediation and hydroponics according to claim 2, characterized in that: The bottom of the fixed pipe (586) extends to the bottom of the fixed box (581) and is connected to the aerator (587). The fixed pipe (586) and the fixed box (581) are fixedly connected.

5. The integrated device for contaminated soil remediation and hydroponics according to claim 2, characterized in that: The one-way valve (588) is located on the surface of the air outlet end of the aerator (587), and the first gear (583) and the second gear (589) mesh with each other.

6. The integrated device for contaminated soil remediation and hydroponics according to claim 2, characterized in that: There is a gap between the turbine blade (5810) and the movable tube (585) to ensure normal airflow.

7. The integrated device for contaminated soil remediation and hydroponics according to claim 2, characterized in that: A dustproof net (6) is fixedly connected to the top of the air intake pipe (584), and the diameter of the second gear (589) is smaller than that of the first gear (583).

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