Device for remediation of heavily contaminated soil

Abstract

The application discloses a kind of severely contaminated soil remediation device, comprising: processing jar, it is inclined arrangement, upper portion of the processing jar is equipped with inlet, lower portion is equipped with discharge port;Staged jar is rotationally arranged in the processing jar and is coaxially arranged with the processing jar, the upper portion of the staged jar is equipped with arc-shaped feeding port, and the lower portion is equipped with discharge port, the processing jar is equipped with rotating motor, the output shaft of the rotating motor is connected with hollow rotating shaft, the rotating shaft is rotatably connected with the top and bottom of the processing jar, and is fixedly connected with the top and bottom of the staged jar, the end of the rotating shaft is communicated with second liquid inlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are jointly communicated with liquid storage tank.The application realizes batch spraying of chemical reagent to material by setting processing jar and staged jar, and can be continuously carried out, which not only improves the efficiency of spraying, but also facilitates the contact of chemical reagent and soil, and improves the treatment effect of soil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil remediation equipment, and more particularly to a device for remediation of heavily contaminated soil. BACKGROUND

[0002] The situation of soil pollution prevention and control in China is very serious, and the soil pollution in some areas is serious. The soil pollution types are diverse, and the situation of old and new pollutants coexisting and inorganic and organic compound pollution is presented. The soil pollution approaches are various, the reasons are complex, and the control is difficult. In the soil remediation engineering technology, it can be roughly divided into three types of physical remediation technology, chemical remediation technology and biological remediation technology. In particular, in the chemical soil remediation engineering technology, the soil is first crushed, and then the crushed soil is sprayed with chemical reagents to achieve the remediation effect of the soil. However, the existing device for spraying chemical reagents on soil cannot make the chemical reagents fully contact with the soil, which affects the remediation effect of the soil. SUMMARY

[0003] An object of the present application is to solve at least the above problems and provide at least the advantages to be described later.

[0004] Another object of the present application is to provide a device for remediation of heavily contaminated soil, which can realize batch spraying of chemical reagents on materials and continuous operation by providing a treatment tank and a grading tank. This not only improves the spraying efficiency, but also facilitates the contact between the chemical reagents and the soil, thereby improving the treatment effect of the soil.

[0005] In order to achieve these objects and other advantages of the present application, a device for remediation of heavily contaminated soil is provided, which comprises: a treatment tank, which is inclined, and is provided with a feeding port at the upper portion and a discharging port at the lower portion, wherein the side wall of the treatment tank is a hollow structure, a first liquid inlet pipe is communicated with the outer side wall of the treatment tank, and a plurality of first liquid spraying ports are arranged at intervals in the inner side wall of the treatment tank;

[0006] a grading tank, which is rotatably arranged in the treatment tank and coaxially arranged with the treatment tank, and is provided with an arc-shaped feeding port at the upper portion and a discharging port at the lower portion, a rotating motor is arranged outside the treatment tank, a hollow rotating shaft is connected to the output shaft of the rotating motor, the rotating shaft is rotatably connected to the top and bottom of the treatment tank and fixedly connected to the top and bottom of the grading tank, a second liquid inlet pipe is communicated with the end portion of the rotating shaft, a liquid storage tank is commonly communicated with the first liquid inlet pipe and the second liquid inlet pipe, and a plurality of second liquid spraying ports are arranged at intervals on the rotating shaft.

[0007] Preferably, the outer side wall of the grading tank is provided with a plurality of groups of scraping assemblies, the plurality of groups of scraping assemblies are arranged along the length direction of the grading tank, each group of scraping assemblies comprises a plurality of connecting rods arranged along the circumferential direction of the grading tank, and an arc-shaped plate connected with the connecting rods, and the connecting rods are arranged along the radial direction of the grading tank.

[0008] Preferably, the first liquid injection ports are divided into a plurality of groups, a plurality of first liquid injection ports in each group are arranged along the circumferential direction of the side wall of the treatment tank, the first liquid injection ports are provided with a first liquid injection pipe, the first liquid injection pipe is arranged along the radial direction of the treatment tank, a plurality of pairs of first injection ports are arranged on the first liquid injection pipe and are symmetrically arranged along the central axis of the first liquid injection pipe.

[0009] The outer side wall of the grading tank is provided with a plurality of groups of cleaning hole assemblies, the plurality of groups of cleaning hole assemblies are arranged one-to-one with the plurality of groups of first liquid injection pipes, the cleaning hole assembly comprises a plurality of pairs of scraping rods arranged along the circumferential direction of the side wall of the grading tank, the scraping rods are arranged along the radial direction of the grading tank, a plurality of scraping needles are arranged on the scraping rods and are arranged one-to-one with the plurality of pairs of first injection ports, wherein the scraping needles on each pair of scraping rods are oppositely arranged, the first liquid injection pipe passes through the corresponding two scraping rods, when the scraping rods are opposite to the first liquid injection pipe, the distance between the end of the scraping needle and the corresponding first injection port is d1, and 0 < d1 < 1 mm.

[0010] Preferably, the feeding port is provided with a feeding pipe, the feeding pipe comprises an inverted circular truncated cone-shaped feeding portion arranged outside the treatment tank, and a guide portion in communication with the feeding portion and located in the treatment tank.

[0011] The feeding port is arc-shaped, the center of the circle where the feeding port is located is located on the central axis of the grading tank, the central angle of the feeding port is a, 140° < a < 155°, the feeding port is provided with an arc-shaped fixed block, the length of the fixed block is equal to the length of the feeding port, the fixed block is recessed towards the central axis of the grading tank to form a chute, the bottom of the chute is provided with an arc-shaped opening, and the arc-shaped opening is in communication with the feeding port, wherein the lower end of the guide portion is provided with an arc-shaped block, the arc-shaped block is provided with a guide port, and the guide port is in communication with the lower end of the guide portion.

[0012] The distance between the bottom of the chute and the feeding port is d3, 15 cm < d3 < 30 cm, when the fixed block is rotated to the position of the guide portion, the arc-shaped block passes through the chute, and the distance between the bottom surface of the arc-shaped block and the bottom of the chute is d2, 0 < d2 < 1 mm.

[0013] Preferably, the second liquid injection port is in communication with a second liquid injection pipe, and a plurality of second injection ports are arranged on the second liquid injection pipe.

[0014] Preferably, the part of the rotating shaft located in the grading tank is provided with spiral plates.

[0015] Preferably, the treatment tank is arranged on a support.

[0016] The present application at least includes the following advantages:

[0017] Firstly, the present application realizes batch spraying of chemical reagent on the material and continuous operation by arranging the treatment tank and the grading tank, which not only improves the spraying efficiency but also facilitates the contact between the chemical reagent and the soil, thereby improving the treatment effect of the soil; the rotating grading tank realizes the rotation of the material, so that the soil and the chemical reagent are in full contact, and the material is alternately transferred between the grading tank and the treatment tank, thereby facilitating the division of the material into two parts and reducing the accumulation of the material.

[0018] Secondly, the present application realizes the stirring of the material between the treatment tank and the grading tank by arranging the scraping assembly, and avoids the sliding of the material along the treatment tank and the accumulation of the material, which facilitates the full contact between the material and the chemical reagent and improves the repair effect of the contaminated soil.

[0019] Thirdly, the present application realizes the uniform spraying of the chemical reagent into the treatment tank by arranging the first liquid spraying pipe, and realizes the timely removal of the material remaining at the first spraying port by arranging the scraping rod and the scraping needle arranged on the scraping rod when the scraping needle is opposite to the first spraying port, so as to avoid the blockage of the first spraying port.

[0020] Fourthly, the present application realizes the entry of as much material as possible into the grading tank when the feeding port is communicated with the material guiding port by arranging the fixing block and the arc-shaped block, which is more conducive to the uniform dispersion of the material in the grading tank and between the grading tank and the treatment tank.

[0021] Other advantages, objects and features of the present application will be partly embodied in the following description, and will be partly understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Structure diagram of the heavy contaminated soil repair device according to one of the technical solutions of the present application;

[0023] Figure 2 For Figure 1 Enlarged view of A;

[0024] Figure 3 For Figure 1 Enlarged view of B;

[0025] Figure 4The structural schematic diagram of the arc-shaped block according to one of the technical solutions of the present application;

[0026] Figure 5 The structural schematic diagram of the material scraping assembly according to one of the technical solutions of the present application. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description and the drawings.

[0028] As Figures 1-5 shown, the present application provides a heavy-polluted soil remediation device, which comprises:

[0029] A treatment tank 2 is arranged obliquely, the upper portion of the treatment tank 2 is provided with a feeding port, and the lower portion is provided with a discharging port 12, wherein the side wall of the treatment tank 2 is a hollow structure, the outer side wall of the treatment tank 2 is communicated with a first liquid inlet pipe 9, and a plurality of first liquid injection ports 18 are arranged at intervals on the inner side wall of the treatment tank 2.

[0030] A classification tank 3 is arranged rotatably and coaxially in the treatment tank 2, the upper portion of the classification tank 3 is provided with an arc-shaped feeding port 16, and the lower portion is provided with a discharging port 40, the treatment tank 2 is provided with a rotary motor 4, the output shaft of the rotary motor 4 is connected with a hollow rotating shaft 5, the rotating shaft 5 is rotatably connected with the top and bottom of the treatment tank 2 and fixedly connected with the top and bottom of the classification tank 3, the end portion of the rotating shaft 5 is communicated with a second liquid inlet pipe 10, and the first liquid inlet pipe 9 and the second liquid inlet pipe 10 are jointly communicated with a liquid storage tank 28, wherein a plurality of second liquid injection ports are arranged at intervals on the rotating shaft 5, when the classification tank 3 is rotated to correspond to the feeding port and the feeding port 16, the material enters the classification tank 3.

[0031] In this technical solution, the crushed soil enters the treatment tank 2 from the feeding port, the treatment tank 2 is a cylindrical structure, the first liquid injection port 18 sprays liquid towards the inside of the treatment tank 2, the classification tank 3 is a cylindrical structure, the output shaft of the rotary motor 4 is coaxially arranged with the treatment tank 2, the rotating shaft 5 is rotatably and sealingly connected with the treatment tank 2, the end portion of the rotating shaft 5 sealingly and rotatably penetrates the bottom end of the treatment tank 2 and extends out of the treatment tank 2, the bottom end of the rotating shaft 5 is rotatably and sealingly connected with the second liquid inlet pipe 10, and the second liquid injection port sprays liquid towards the inside of the classification tank 3, when the classification tank 3 is rotated to misalign the feeding port and the feeding port 16, the material enters between the treatment tank 2 and the classification tank 3, and when the classification tank 3 is rotated to correspond to the feeding port and the feeding port 16, the material enters the classification tank 3.

[0032] In use, the rotary motor 4 is started, when the grading tank 3 rotates to the feeding port and the feeding port 16 are staggered, the material enters between the grading tank 3 and the treatment tank 2 through the feeding port, the grading tank 3 continues to rotate to the feeding port and the feeding port 16 are corresponding, the material enters the feeding port 16 through the feeding port, and enters the grading tank 3 through the feeding port 16, the material in the grading tank 3 enters the treatment tank 2 from the discharge port 40, and is discharged out of the treatment tank 2 from the discharge port 12.

[0033] By adopting the technical scheme, the treatment tank 2 and the grading tank 3 are arranged, so that the material is sprayed with the chemical reagent in batches and can be continuously sprayed, the spraying efficiency is improved, the chemical reagent is beneficial to contact with the soil, and the treatment effect of the soil is improved; the grading tank 3 is rotatable, on the one hand, the material is rotated to make the soil fully contact with the chemical reagent, and on the other hand, the material is alternately arranged in the grading tank 3, between the grading tank 3 and the treatment tank 2, and in the grading tank 3, so that the material is divided into two parts, and the material accumulation is reduced.

[0034] In another technical scheme, a plurality of groups of material scraping assemblies are arranged at intervals on the outer side wall of the grading tank 3, the groups of material scraping assemblies are arranged at intervals along the length direction of the grading tank 3, each group of material scraping assemblies comprises a plurality of connecting rods 13 arranged at intervals in the circumferential direction of the grading tank 3 and an arc-shaped plate 27 connected with the connecting rods 13, and the connecting rods 13 are arranged in the radial direction of the grading tank 3. By adopting the technical scheme, the material between the treatment tank 2 and the grading tank 3 can be stirred by arranging the material scraping assemblies, the material can be prevented from directly sliding down the treatment tank 2, and the material accumulation is avoided, so that the material fully contacts with the chemical reagent, and the repair effect of the contaminated soil is improved.

[0035] In another technical scheme, the first liquid spraying ports 18 are divided into a plurality of groups, a plurality of first liquid spraying ports 18 in each group are arranged at intervals in the circumferential direction of the side wall of the treatment tank 2, a first liquid spraying pipe 17 is arranged at the first liquid spraying ports 18, the first liquid spraying pipe 17 is arranged in the radial direction of the treatment tank 2, a plurality of pairs of first spraying ports 19 are arranged at intervals on the first liquid spraying pipe 17, and two first spraying ports 19 in each pair of first spraying ports 19 are symmetrically arranged along the central axis of the first liquid spraying pipe 17.

[0036] The outer side wall of the grading tank 3 is provided with a plurality of groups of cleaning hole assemblies, and the plurality of groups of cleaning hole assemblies are arranged one-to-one with a plurality of groups of first liquid spraying pipes 17, the cleaning hole assembly comprises a plurality of pairs of scraping rods 20 arranged along the circumferential direction of the side wall of the grading tank 3, the scraping rods 20 are arranged along the radial direction of the grading tank 3, a plurality of scraping needles 21 are arranged on the scraping rods 20 in an up-down interval (the scraping needles 21 are arranged along the extension direction of the central axis of the grading tank 3), and the plurality of scraping needles 21 are arranged one-to-one with a plurality of pairs of first spraying ports 19, wherein the scraping needles 21 on each pair of scraping rods 20 are oppositely arranged, and the first liquid spraying pipe 17 penetrates through the corresponding two scraping rods 20, when the scraping rod 20 is opposite to the first liquid spraying pipe 17, the distance between the end of the scraping needle 21 and the corresponding first spraying port 19 is d1, and 0 < d1 < 1 mm. By adopting the technical scheme, the chemical reagent is uniformly sprayed into the treatment tank 2 by arranging the first liquid spraying pipe 17, and by arranging the scraping rod 20 and the scraping needle 21 arranged on the scraping rod 20, the scraping needle 21 can timely remove the residual material at the first spraying port 19 when the scraping needle 21 is opposite to the first spraying port 19, so as to avoid the material from blocking the first spraying port 19.

[0037] In another technical scheme, the feeding port is provided with a feeding pipe, and the feeding pipe comprises an inverted circular truncated cone-shaped feeding portion 7 (the upper end diameter is larger than the lower end diameter) arranged outside the treatment tank 2, and a material guiding portion 8 in communication with the feeding portion 7 and located in the treatment tank 2 at the lower end.

[0038] The feeding port 16 is arc-shaped, the center of the circle where the feeding port 16 is located is located on the central axis of the grading tank 3, the central angle of the feeding port 16 is a, 140° < a < 155°, the feeding port 16 is provided with an arc-shaped fixed block 24, the length of the fixed block 24 is equal to the length of the feeding port 16, the fixed block 24 is recessed in the direction of the central axis of the grading tank 3 to form a sliding groove 25, the bottom of the sliding groove 25 is provided with an arc-shaped opening 26, and the arc-shaped opening 26 is in communication with the feeding port 16, wherein the lower end of the material guiding portion 8 is provided with an arc-shaped block 22, the arc-shaped block 22 is provided with a material guiding port 23, and the material guiding port 23 is in communication with the lower end of the material guiding portion 8.

[0039] The distance between the bottom of the sliding groove 25 and the feeding port 16 is d3, 15 cm < d3 < 30 cm, when the fixed block 24 rotates to the material guiding portion 8, the arc-shaped block 22 penetrates through the sliding groove 25, and the distance between the bottom surface of the arc-shaped block 22 and the bottom of the sliding groove 25 is d2, 0 < d2 < 1 mm. By adopting the technical scheme, when the feeding port 16 is in communication with the material guiding port 23, the material can enter the grading tank 3 as much as possible by arranging the fixed block 24 and the arc-shaped block 22, which is more conducive to uniformly dispersing the material in the grading tank 3 and between the grading tank 3 and the treatment tank 2.

[0040] In another technical solution, the second liquid injection port is communicated with a second liquid injection pipe 15, a plurality of second injection ports 14 are arranged on the second liquid injection pipe 15 at intervals, and the second liquid injection pipe 15 is arranged along the radial direction of the classification tank 3. This technical solution is used to discharge the chemical reagent into the classification tank 3.

[0041] In another technical solution, the part of the rotating shaft 5 located in the classification tank 3 is provided with a spiral plate 11. This technical solution is used to discharge the material in the classification tank 3.

[0042] In another technical solution, the treatment tank 2 is arranged on the support 1. This technical solution is used to discharge the material in the treatment tank 2 and the classification tank 3.

[0043] The number of devices and the processing scale described herein are used to simplify the description of the present application. The application, modification and change of the present application to the severely contaminated soil remediation device are obvious to those skilled in the art.

[0044] Although the embodiments of the present application have been disclosed as above, it is not limited to the application and the embodiments listed in the specification, and it can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. A device for remediation of heavily contaminated soil, characterized in that The utility model relates to a kind of processing tank and grading tank, including: Processing tank, which is arranged obliquely, is provided with feed inlet in upper part and discharge outlet in lower part, wherein the side wall of the processing tank is hollow structure, the outer side wall of the processing tank is communicated with first liquid inlet pipe, and a plurality of first liquid injection ports are arranged at intervals in the inner side wall of the processing tank; Grading tank, which is arranged rotatably in the processing tank and coaxially with the processing tank, is provided with arc-shaped feeding port in upper part and discharge outlet in lower part, and the processing tank is provided with rotary motor, the output shaft of the rotary motor is connected with hollow rotating shaft, the rotating shaft is rotatably connected with the top and bottom of the processing tank and fixedly connected with the top and bottom of the grading tank, the end of the rotating shaft is communicated with second liquid inlet pipe, and the first liquid inlet pipe and the second liquid inlet pipe are jointly communicated with liquid storage tank, wherein a plurality of second liquid injection ports are arranged at intervals on the rotating shaft, when the grading tank is rotated to correspond with the feed inlet and the feeding port, material enters the grading tank; The first liquid injection port is divided into multiple groups, multiple first liquid injection ports in each group are arranged at intervals along the circumferential direction of the side wall of the processing tank, first liquid injection pipe is arranged at the first liquid injection port, the first liquid injection pipe is arranged along the radial direction of the processing tank, and multiple pairs of first injection ports are arranged at intervals on the first liquid injection pipe along the central axis of the first liquid injection pipe, wherein each pair of first injection ports is symmetrically arranged along the central axis of the first liquid injection pipe; A plurality of groups of hole cleaning assemblies are arranged at intervals on the outer side wall of the grading tank, and the hole cleaning assemblies and the first liquid injection pipes are one-to-one corresponding, the hole cleaning assembly includes a plurality of pairs of scraper rods arranged at intervals along the circumferential direction of the side wall of the grading tank, the scraper rods are also arranged along the radial direction of the grading tank, a plurality of scraper needles are arranged at intervals on the scraper rods, and the scraper needles and the first injection ports are one-to-one corresponding, wherein the scraper needles on each pair of scraper rods are oppositely arranged, the first liquid injection pipe passes through the corresponding two scraper rods, when the scraper rods are opposite to the first liquid injection pipe, the distance between the end of the scraper needle and the corresponding first injection port is d1, and 0 < d1 < 1 mm; The feed inlet is provided with feeding pipe, and the feeding pipe includes inverted circular truncated cone-shaped feeding part arranged outside the processing tank and guide part communicated with the feeding part and located in the processing tank at lower end; The feeding port is arc-shaped, the center of the circle where the feeding port is located is located on the central axis of the grading tank, the central angle of the feeding port is α, 140° < α < 155°, the feeding port is provided with arc-shaped fixed block, the length of the fixed block is equal to the length of the feeding port, the fixed block is recessed to form chute towards the central axis of the grading tank, the bottom of the chute is provided with arc-shaped opening, and the arc-shaped opening is communicated with the feeding port, wherein the lower end of the guide part is provided with arc-shaped block, the arc-shaped block is provided with guide port, and the guide port is communicated with the lower end of the guide part; The distance between the bottom of the chute and the feeding port is d3, 15 cm < d3 < 30 cm, when the fixed block is rotated to the guide part, the arc-shaped block passes through the chute, and the distance between the bottom surface of the arc-shaped block and the bottom of the chute is d2, 0 < d2 < 1 mm.

2. The apparatus for remediating heavily contaminated soil according to claim 1, wherein The outer side wall of the grading tank is provided with multiple groups of material scraping assemblies, which are arranged along the length direction of the grading tank, and each group of material scraping assemblies comprises multiple connecting rods arranged along the circumference of the grading tank and arc-shaped plates connected with the connecting rods.

3. The apparatus for remediating heavily contaminated soil according to claim 1, wherein The second liquid spraying pipe is communicated with the second liquid spraying port, and multiple second spraying ports are arranged on the second liquid spraying pipe.

4. The apparatus for remediating heavily contaminated soil of claim 1, wherein, The part of the rotating shaft located in the grading tank is provided with a spiral plate.

5. The apparatus for remediating heavily contaminated soil of claim 1, wherein, The processing tank is arranged on a support.

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