Experimental device for studying remediation of heavy metal contaminated soil by passivation material

Abstract

The utility model discloses an experimental device for studying the remediation of heavy metal contaminated soil by a passivation material, and relates to the technical field of soil remediation. Comprising a main body, a multi-space planting box and a reciprocating driving mechanism, the multi-space planting box is slidably connected to the interior of the main body, the reciprocating driving mechanism is connected to the outer side of the main body, and one end of the reciprocating driving mechanism penetrates through the main body and is connected with the side wall of the multi-space planting box; and a passivation material is arranged in the multi-space planting box. The multi-space planting box is driven by the reciprocating driving mechanism to slide in the main body in a reciprocating manner, so that soil and passivation materials in the multi-space planting box can be sufficiently and uniformly mixed and spread, and the passivation materials and the soil added into each planting space of multi-space planting are sufficiently and uniformly mixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil remediation technical field, concretely relates to an experimental device for studying passivation material remediation of heavy metal contaminated soil. BACKGROUND

[0002] Soil heavy metal pollution caused by atmospheric deposition, pesticides and fertilizers, livestock manure, sewage irrigation, etc. has become a common environmental problem in China. Heavy metals in the soil do not undergo microbial or chemical degradation processes. Residual heavy metals not only pose a threat to soil organisms, but also can be amplified at different trophic levels in the food chain, ultimately threatening human health.

[0003] Chemical passivation remediation of heavy metal contaminated soil is achieved by adding some chemical active materials to the soil. Through ion exchange adsorption, organic complexation, coprecipitation, oxidation and reduction reactions, the chemical form of soil heavy metals is changed, the mobility, plant availability and biological toxicity of soil heavy metals are reduced, and the accumulation of heavy metal pollutants in the edible parts of agricultural products is reduced. Common remediation materials for passivation remediation technology include palygorskite, sepiolite and other natural clay minerals.

[0004] Publication No. CN213875684U, Name: Soil Lead Passivation Experiment System Based on Mudstone or Biochar, This Chinese patent sets up multiple experimental plots to clearly show the influence of different remediation materials and planting on the environmental behavior of heavy metal lead in soil and the reduction of biological availability. The overall occupied area is large, and it is not convenient to uniformly add passivation remediation materials to the experimental plots, which leads to deviations in experimental results. Therefore, it is necessary to provide an experimental device for studying passivation materials remediation of heavy metal contaminated soil, which can assist in adjusting the uniformity of the addition of passivation materials. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide an experimental device for studying passivation materials remediation of heavy metal contaminated soil to solve the problems existing in the prior art. Under field experimental conditions, for the soil application amount of passivation agent, the soil application depth of passivation agent and the soil irrigation water amount, etc., technical support and promotion basis are provided for the remediation of heavy metal contaminated soil using clay minerals (palygorskite, sepiolite, etc.).

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] An experimental device for studying passivation materials remediation of heavy metal contaminated soil, comprising a main body, a multi-space planting box and a reciprocating drive mechanism, the multi-space planting box is slidingly connected to the inside of the main body, the reciprocating drive mechanism is connected to the outside of the main body, one end of the reciprocating drive mechanism penetrates through the main body and is connected with the side wall of the multi-space planting box, and the multi-space planting box is provided with passivation materials.

[0008] Further, the plurality of space planting boxes are provided with sliding rails on the circumferential side, and the inner wall of the main body is provided with sliding grooves, and the sliding rails are slidingly connected in the sliding grooves.

[0009] Further, the plurality of space planting boxes are provided with sliding columns away from one end of the reciprocating driving mechanism, the sliding columns penetrate the main body, one end of the sliding column penetrating the main body is threadedly connected with a limiting buckle cover, a buffer spring is sleeved on the sliding column, one end of the buffer spring is fixedly connected with the outer side wall of the plurality of space planting boxes away from the reciprocating driving mechanism, and the other end is fixedly connected with the inner side wall of the main body away from the reciprocating driving mechanism.

[0010] Further, the passivation material is one of sepiolite, palygorskite or bentonite.

[0011] Further, the reciprocating driving mechanism comprises a double-shaft motor, a connecting rod, a sliding block and a sliding limiting piece, the double-shaft motor is fixedly connected to one side of the main body, both output ends of the double-shaft motor are connected with one connecting rod, the connecting rod is rotationally connected with the sliding block through a connecting column, and the sliding limiting piece is fixedly connected to the outer side wall of the main body through a supporting arm, and the sliding block is slidingly connected to the sliding limiting piece.

[0012] Further, the bottom end of the main body is provided with a foma wheel.

[0013] Further, a plurality of planting spaces are formed in the plurality of space planting boxes.

[0014] Further, the top end of the plurality of space planting boxes is provided with a water pipe fixing arm, a water pipe is fixedly connected to the water pipe fixing wall, the top end of each planting space is provided with one water pipe, the top end of the water pipe is provided with one water inlet, and the bottom end of the water pipe is provided with a plurality of water outlets.

[0015] Further, the water inlet of the water pipe is provided with a liquid flow meter.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The reciprocating driving mechanism drives the plurality of space planting boxes to reciprocally slide in the main body, the soil and the passivation material in the plurality of space planting boxes can be fully mixed and leveled, and the passivation material and the soil added into each planting space of the plurality of space planting boxes can be fully mixed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a kind of overall schematic view of experimental device for studying passivation material to repair heavy metal contaminated soil.

[0019] Figure 2It is another overall schematic view of an experimental device for studying a passivation material for repairing heavy metal contaminated soil.

[0020] Figure 3 It is a partial enlarged view of Figure 2 .

[0021] Wherein, 1 - main body; 2 - multi-space planting box; 3 - reciprocating drive mechanism; 31 - double-shaft motor; 32 - connecting rod; 33 - sliding block; 34 - sliding limit piece; 35 - connecting column; 36 - support arm; 4 - sliding column; 5 - limit buckle cover; 6 - buffer spring; 7 - foma wheel; 8 - water pipe fixing wall; 9 - water pipe; 10 - liquid flow meter. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model is further described below by means of drawings and embodiments.

[0023] EMBODIMENT

[0024] In combination Figures 1-3 , the utility model provides a kind of experimental device for studying passivation material for repairing heavy metal contaminated soil, including main body 1, multi-space planting box 2 and reciprocating drive mechanism 3, the multi-space planting box 2 is slidably connected in the inside of the main body 1, the reciprocating drive mechanism 3 is connected to the outside of the main body 1, one end of the reciprocating drive mechanism 3 penetrates the main body 1 and is connected with the side wall of the multi-space planting box 2, and the multi-space planting box 2 is provided with passivation material and soil, the passivation material uses one of sepiolite, palygorskite or bentonite.

[0025] The periphery of the multi-space planting box 2 is provided with slide rail, the inner wall of the main body is provided with slide groove, the slide rail is slidably connected in the slide groove, the reciprocating movement of the multi-space planting box 2 is realized under the reciprocating drive mechanism 3, and then the passivation material and soil contained in the multi-space planting box 2 can be mixed and leveled, to facilitate planting experiment.

[0026] The end of the multi-space planting box 2 away from the reciprocating drive mechanism 3 is provided with sliding column 4, the sliding column 4 penetrates the main body 1, one end of the sliding column 4 penetrating the main body 1 is threadedly connected with limit buckle cover 5, buffer spring 6 is sleeved on the sliding column 4, one end of the buffer spring 6 is fixedly connected with the outer side wall of the multi-space planting box 2 away from the reciprocating drive mechanism 3, and the other end is fixedly connected with the inner side wall of the main body 1 away from the reciprocating drive mechanism 3, and the buffer spring 6 can realize impact buffering in reciprocating movement process, to avoid excessive rigid impact.

[0027] The reciprocating drive mechanism 3 includes a double-shaft motor 31, connecting rods 32, sliding blocks 33 and sliding limit pieces 34, the double-shaft motor 31 is fixedly connected to one side of the main body 1, both output ends of the double-shaft motor 31 are connected with one connecting rod 32, each connecting rod 32 is rotatably connected with the sliding block 33 through a connecting column 35, the sliding limit piece 34 is fixedly connected to the outer side wall of the main body 1 through a support arm 36, and the sliding block 33 is slidably connected to the sliding limit piece 34.

[0028] The bottom end of the main body 1 is provided with a form wheel 7, so that the device can be moved or positioned.

[0029] The inside of the multi-space planting box 2 is formed with a plurality of planting spaces, and the soil in each planting space can be individually sampled and measured for heavy metal content.

[0030] The top end of the multi-space planting box 2 is provided with a water pipe fixing arm 8, the water pipe fixing arm 8 is fixedly connected with a water pipe 9, the top end of each planting space is provided with one water pipe 9, the top end of the water pipe 9 is provided with an inlet, and the bottom end of the water pipe 9 is provided with a plurality of outlets, the plurality of outlets can uniformly add water into the planting space, and the inlet of the water pipe 9 is provided with a liquid flow meter 10, so that the amount of water added into each planting space can be controlled.

[0031] The reciprocating drive mechanism 3 drives the multi-space planting box 2 to reciprocally slide in the main body 1, which can assist in fully mixing and flattening the soil and passivation material in the multi-space planting box 2, and ensure that the passivation material and soil added into each planting space of the multi-space planting are fully mixed.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification according to the technical essence of the utility model are still within the scope of the utility model technical scheme.

Claims

1. An experimental device for investigating the remediation of heavy metal contaminated soil by a passivation material, characterized in that, Including a main body, a multi-space planting box and a reciprocating driving mechanism, the multi-space planting box is slidingly connected inside the main body, the reciprocating driving mechanism is connected outside the main body, one end of the reciprocating driving mechanism penetrates the main body and is connected with the side wall of the multi-space planting box, and the multi-space planting box is provided with a passivation material.

2. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 1, characterized in that, The multi-space planting box is provided with a sliding rail on the periphery, the main body is provided with a sliding groove on the inner wall, and the sliding rail is slidingly connected in the sliding groove.

3. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 1, characterized in that, The multi-space planting box is provided with a sliding column away from one end of the reciprocating driving mechanism, the sliding column penetrates the main body, one end of the sliding column penetrating the main body is threadedly connected with a limiting cover, a buffer spring is sleeved on the sliding column, one end of the buffer spring is fixedly connected with the outer side wall of the multi-space planting box away from the reciprocating driving mechanism, and the other end is fixedly connected with the inner side wall of the main body away from the reciprocating driving mechanism.

4. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 1, characterized in that, The passivation material is one of sepiolite, palygorskite or bentonite.

5. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 1, characterized in that, The reciprocating driving mechanism comprises a double-shaft motor, a connecting rod, a sliding block and a sliding limiting piece, the double-shaft motor is fixedly connected to one side of the main body, the two output ends of the double-shaft motor are both connected with one connecting rod, the connecting rod is rotationally connected with the sliding block through a connecting column, and the sliding limiting piece is fixedly connected to the outer side wall of the main body through a supporting arm and slidingly connected with the sliding block.

6. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 1, characterized in that, The bottom end of the main body is provided with a Foma wheel.

7. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 1, characterized in that, The multi-space planting box is internally formed with a plurality of planting spaces.

8. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 7, characterized in that, The top end of the multi-space planting box is provided with a water pipe fixing arm, the water pipe fixing wall is fixedly connected with a water pipe, the top end of each planting space is provided with one water pipe, the top end of the water pipe is provided with an inlet, and the bottom end of the water pipe is provided with a plurality of outlets.

9. The experimental device for studying the repair of heavy metal contaminated soil by a passivation material according to claim 8, characterized in that, The inlet of the water pipe is provided with a liquid flow meter.

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