CN221287634U - Pretreatment system for soil heavy metal decrement purification material - Google Patents
Pretreatment system for soil heavy metal decrement purification material Download PDFInfo
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- CN221287634U CN221287634U CN202323219548.9U CN202323219548U CN221287634U CN 221287634 U CN221287634 U CN 221287634U CN 202323219548 U CN202323219548 U CN 202323219548U CN 221287634 U CN221287634 U CN 221287634U
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- mixed solution
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- 239000000463 material Substances 0.000 title claims abstract description 64
- 239000002689 soil Substances 0.000 title claims abstract description 29
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 27
- 238000000746 purification Methods 0.000 title claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 107
- 239000011259 mixed solution Substances 0.000 claims abstract description 53
- 238000007872 degassing Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000002360 preparation method Methods 0.000 claims abstract description 46
- 230000004048 modification Effects 0.000 claims abstract description 40
- 238000012986 modification Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 32
- 239000006249 magnetic particle Substances 0.000 claims abstract description 28
- 239000002734 clay mineral Substances 0.000 claims abstract description 17
- 239000000696 magnetic material Substances 0.000 claims abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 12
- 239000007822 coupling agent Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 36
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 15
- 235000010413 sodium alginate Nutrition 0.000 claims description 15
- 229940005550 sodium alginate Drugs 0.000 claims description 15
- 239000000661 sodium alginate Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 230000008439 repair process Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229960000892 attapulgite Drugs 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052625 palygorskite Inorganic materials 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009418 agronomic effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011246 composite particle Substances 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to a pretreatment system for a soil heavy metal reduction purification material, which comprises a raw material modification tank body, a mixed solution pre-stirring tank body, a mixed solution preparation tank body and a mixed solution degassing storage tank body, wherein a first water pipe and a plurality of feed inlets are formed in the raw material modification tank body, clay mineral A, a coupling agent and absolute ethyl alcohol are respectively put into the corresponding feed inlets, a modification stirring mechanism is arranged in the raw material modification tank body, a second water pipe and a plurality of feed inlets are formed in the mixed solution pre-stirring tank body, clay mineral B, a magnetic material and a particle fixing material are respectively put into the corresponding feed inlets, a pre-stirring mechanism is arranged in the mixed solution pre-stirring tank body, a preparation stirring mechanism is arranged in the mixed solution preparation tank body, a degassing device and a degassing stirring mechanism are arranged in the mixed solution degassing storage tank body, and a vacuum pump is arranged at the upper end of the mixed solution degassing storage tank body. The utility model can ensure the quality of magnetic particles prepared by subsequent material dripping.
Description
Technical Field
The utility model relates to the field of preparation of soil pollution repair materials, in particular to a pretreatment system of a soil heavy metal reduction purification material.
Background
The pollution of heavy metal elements in soil is one of the world soil environmental problems, seriously threatens the quality safety of agricultural products, the safety of living environment and the safety of ecological environment, and has the characteristics of high concealment, long duration, strong hazard and the like, and the heavy metal pollution is relatively difficult to remove. At present, the heavy metal contaminated soil restoration mainly guarantees the quality safety of agricultural products by reducing the activity of heavy metals, for example, the environmental risk is reduced by the technologies of solidification and stabilization technology, low-accumulation crop planting, agronomic regulation and control and the like, however, the heavy metal content in the soil cannot be reduced by reducing the activity of heavy metals, and the soil environmental quality cannot be fundamentally improved, so that the research and development of heavy metal decrement restoration materials and related purification technologies are key for solving the bottleneck of the prior art, realizing the improvement of the soil environmental quality and guaranteeing the safety of agricultural products.
In the prior art, various materials for soil metal pollution abatement and repair are produced, and with the development of technology, many soil heavy metal repair materials are produced in a magnetic particle form, for example, a magnetic soil heavy metal repair agent is disclosed in a CN112480930B patent, and the magnetic soil repair agent with a core-shell structure is synthesized by a hydrothermal method by taking magnetic Fe 3O4 modified by tetraethoxysilane as a magnetic core and taking silicon-containing tailing leaching residues after hydrothermal activation as a silicon source and an alkali source of a synthetic repair agent shell.
However, the research and development of the device for preparing the magnetic particles for repairing the soil are insufficient in the prior art, and the existing device for preparing the soil repairing agent generally has the defects of small preparation amount, incapability of realizing large-scale production and the like, wherein when the magnetic particles for repairing the soil heavy metal are prepared by utilizing raw materials such as sodium alginate, clay minerals and the like, the preparation quality of the magnetic particles for repairing the soil heavy metal can be affected due to the problems that the sodium alginate is easy to agglomerate in water, air bubbles are easy to remain in materials and the like.
Disclosure of utility model
The utility model aims to provide a pretreatment system for a soil heavy metal reduction purification material, which uniformly loads a coupling agent, a magnetic material and the like on the surface of a mineral through stirring control so as to improve the adsorption efficiency of a subsequent composite material on heavy metal elements, effectively avoid sodium alginate caking in water, ensure that no residual bubbles exist in the material, and further ensure the quality of preparing magnetic particles by dripping the subsequent material.
The aim of the utility model is realized by the following technical scheme:
The utility model provides a soil heavy metal decrement purification material pretreatment systems, including the raw and other materials modification jar body, the mixed liquor is the jar body in advance, mixed liquor preparation jar body and mixed liquor degasification storage jar body, wherein be equipped with first raceway and a plurality of feed opening on the raw and other materials modification jar body, and clay mineral A drops into first feed opening through first feed arrangement drive, the coupling agent drops into the second feed opening, absolute ethyl alcohol drops into the third feed opening, the inside modification rabbling mechanism that is equipped with of raw and other materials jar body, the delivery outlet of the raw and other materials modification jar body is connected with the first feed opening on the mixed liquor preparation jar body through first connecting line, be equipped with second raceway and a plurality of feed opening on the mixed liquor preparation jar body in advance, and clay mineral B drops into in the first feed opening through the drive of second feed arrangement, the magnetic material drops into in the second feed opening through the drive of third feed arrangement, the inside mixed liquor is equipped with the absolute ethyl alcohol and drops into the third feed opening, the delivery outlet of the mixed liquor preparation jar body is equipped with the modified rabbling mechanism through the second connecting line, the delivery outlet of the mixed liquor preparation jar body is equipped with the mixed liquor preparation of mixed liquor preparation jar body in advance, the mixed liquor preparation jar body is equipped with the degassing storage jar body in advance, the degassing storage jar body is connected with the mixed liquor preparation of the degassing jar body through the vacuum, the mixed liquor is equipped with the degassing storage jar body.
The first feeding device, the second feeding device and the third feeding device are all transmission augers, and the first feeding device, the second feeding device and the third feeding device are controlled by a control system.
The modified stirring mechanism, the pre-stirring mechanism, the preparation stirring mechanism and the degassing stirring mechanism are identical in structure and comprise stirring shafts and stirring motors, wherein the upper ends of the stirring shafts are fixedly connected with the stirring motors, stirring blades are arranged on the stirring shaft main body, and the stirring motors are controlled by a control system.
And the first water delivery pipe and the second water delivery pipe are respectively provided with a water delivery constant delivery pump, and the water delivery constant delivery pumps are controlled by a control system.
The output port of the raw material modification tank body is provided with an output control valve which is connected with the first connecting pipeline, the second connecting pipeline is provided with a mixed liquid quantitative pump, and the output control valve and the mixed liquid quantitative pump are controlled by a control system.
The material in the mixed liquid preparation tank body enters the mixed liquid degassing storage tank body through a third connecting pipeline, a one-way valve and a material constant delivery pump are arranged on the third connecting pipeline, and the material constant delivery pump, the degassing device and the vacuum pump are controlled by a control system.
The softened water is firstly added into the mixed solution pre-stirring tank body through the second water pipe, sodium alginate powder is then added through the second feeding device, the pre-stirring mechanism is synchronously started, after sodium alginate is completely dissolved, the clay mineral B is then input into the mixed solution pre-stirring tank body through the third feeding device, and then the magnetic material is added into the mixed solution pre-stirring tank body.
The mixed liquid degassing storage tank body is connected with the dripping device through a fourth pipeline, and liquid drops generated by the dripping device fall into the magnetic particle solidifying device containing the crosslinking solution.
The utility model has the advantages and positive effects that:
1. The utility model utilizes devices such as a raw material modification tank body, a mixed solution pre-stirring tank body, a mixed solution preparation tank body, a mixed solution degassing storage tank body and the like to pretreat raw materials such as clay mineral, aluminosilicate mineral, magnetic material, coupling agent and the like, wherein the raw material modification tank body, the mixed solution pre-stirring tank body and the mixed solution preparation tank body are used for carrying out mixed modification on the raw materials, the coupling agent, the magnetic material and the like are uniformly loaded on the surface of the mineral through stirring control, so that the adsorption efficiency of a subsequent composite material on heavy metal elements is improved, and meanwhile, sodium alginate is considered to be dissolved slowly in water and is added into water for being easily bonded into the water in one step.
2. The utility model utilizes the control system to control the feeding speed and the stirring speed of each tank body so as to realize continuous operation, thereby meeting the requirements of large-scale and automatic production of enterprises.
Drawings
Figure 1 is a schematic view of the structure of the present utility model,
Fig. 2 is a schematic view of the usage state of the present utility model.
The device comprises a raw material modification tank body 1, a first feeding device 101, a feeding port 102, a modification stirring mechanism 103, an output control valve 104, a first connecting pipeline 105, a mixed liquid pre-stirring tank body 2, a second feeding device 201, a third feeding device 202, a pre-stirring mechanism 203, a second water delivery pipe 204, a water delivery fixed displacement pump 2041, a second connecting pipeline 205, a mixed liquid fixed displacement pump 2051, a mixed liquid preparation tank body 3, a preparation stirring mechanism 301, a third connecting pipeline 302, a one-way valve 3021, a material fixed displacement pump 3022, a mixed liquid degassing storage tank body 4, a degassing device 401, a vacuum pump 402, a degassing stirring mechanism 403, a fourth pipeline 404, a dripping device 5, a magnetic particle solidifying device 6, a magnetic particle cleaning device 7, a magnetic particle drying device 8, a packaging system 9 and a control system 10.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises a raw material modification tank 1, a mixed liquor pre-stirring tank 2, a mixed liquor preparation tank 3 and a mixed liquor degassing storage tank 4, wherein the output port of the raw material modification tank 1 is connected with a first feed inlet on the mixed liquor preparation tank 3 through a first connecting pipeline 105, the output port of the mixed liquor pre-stirring tank 2 is connected with a second feed inlet on the mixed liquor preparation tank 3 through a second connecting pipeline 205, and the mixed liquor preparation tank 3 is connected with the mixed liquor degassing storage tank 4 through a third connecting pipeline 302.
As shown in fig. 1, in this embodiment, the raw material modification tank 1 is provided with a first feeding port 102, a second feeding port, a third feeding port and a first water pipe, and the inside of the raw material modification tank 1 is provided with a modification stirring mechanism 103, wherein the clay mineral a is driven to be fed into the first feeding port 102 by the first feeding device 101, the coupling agent is fed into the second feeding port, the absolute ethyl alcohol is fed into the third feeding port, the first water pipe conveys a set amount of distilled water into the raw material modification tank 1, and the modification stirring mechanism 103 is started to uniformly mix the coupling agent and slowly load the coupling agent onto the surface of the clay mineral a. In this embodiment, the first feeding device 101 is a transmission auger, which is a well known technology in the art and is a commercially available product, and the modified stirring mechanism 103 includes a stirring shaft and a stirring motor, where the upper end of the stirring shaft is disposed outside the raw material modification tank 1 and is fixedly connected with the stirring motor, and the main body of the stirring shaft is disposed inside the raw material modification tank 1 and is provided with stirring blades. The utility model can control the feeding speed and the stirring speed of the raw material modification tank body 1 according to actual needs by the control system 10.
In this embodiment, as shown in fig. 1, a first feeding port, a second feeding port, a third feeding port and a second water pipe 204 are provided on the mixed solution pre-stirring tank 2, a pre-stirring mechanism 203 is provided inside the mixed solution pre-stirring tank 2, wherein clay mineral B is driven to be fed into the first feeding port by a second feeding device 201, magnetic material is driven to be fed into the second feeding port by a third feeding device 202, particle fixing material is fed into the third feeding port, a set amount of distilled water is conveyed into the mixed solution pre-stirring tank 2 by the second water pipe 204, and then the pre-stirring mechanism 203 is started to uniformly distribute the clay mineral, the magnetic material and the particle fixing material in the mixed solution to complete pre-stirring. In this embodiment, the second feeding device 201 and the third feeding device 202 are both transmission augers, the pre-stirring mechanism 203 has the same structure as the modified stirring mechanism 103, and the second feeding device 201, the third feeding device 202 and the pre-stirring mechanism 203 all control the feeding speed and the stirring speed through the control system 10.
As shown in fig. 1, in this embodiment, the first water pipe 204 and the second water pipe 204 are provided with a fixed displacement pump 2041, and the fixed displacement pump 2041 is controlled by the control system 10.
In this embodiment, as shown in fig. 1, an output control valve 104 is disposed at an output port of the raw material modification tank 1 and is connected to the first connection pipe 105, and a mixed liquid dosing pump 2051 is disposed on the second connection pipe 205. In this embodiment, the output control valve 104 is a knife gate valve, which is a commercially available product. The output control valve 104 and the mixture metering pump 2051 are controlled by the control system 10.
In this embodiment, as shown in fig. 1, a preparation stirring mechanism 301 is disposed in the mixed solution preparation tank 3, and the materials in the raw material modification tank 1 enter the mixed solution preparation tank 3 through a first connecting pipeline 105, the materials in the mixed solution pre-stirring tank 2 enter the mixed solution preparation tank 3 through a second connecting pipeline 205, and then the preparation stirring mechanism 301 starts stirring to mix various raw materials for reaction, so that the viscosity of the raw materials is further reduced due to dilution of the thickening additive in the raw materials. In this embodiment, the preparation stirring mechanism 301 has the same structure as the modification stirring mechanism 103.
In this embodiment, as shown in fig. 1, the material in the mixed solution preparation tank 3 enters the mixed solution degassing storage tank 4 through the third connecting pipeline 302, the third connecting pipeline 302 is provided with a one-way valve 3021 and a material constant delivery pump 3022, the material constant delivery pump 3022 is controlled by the control system 10, the mixed solution degassing storage tank 4 is provided with a degassing device 401 and a degassing stirring mechanism 403, the upper end of the mixed solution degassing storage tank 4 is provided with a vacuum pump 402 for vacuumizing the mixed solution degassing storage tank 4 to remove bubbles, the material in the mixed solution preparation tank 3 is driven by the material constant delivery pump 3022 into the mixed solution degassing storage tank 4, then the degassing stirring mechanism 403 starts stirring the material, the degassing device 401 starts to remove the dissolved air in the stirring process, in order to prevent the residual bubbles from damaging the material structure in the subsequent solidification process, the material quantifying pump 3022, the degassing device 401, the degassing stirring mechanism 403, and the vacuum pump 402 are controlled by the control system 10, where the degassing stirring mechanism 403 has the same structure as the modifying stirring mechanism 103, in this embodiment, the degassing device 401 uses the generated high-frequency ultrasonic wave to remove the bubbles in the material, which is a known technology in the art, for example, the chinese patent with the publication No. CN214971938U discloses an ultrasonic wave bubble removing device, which limits the cavitation effect of the ultrasonic wave in the transmission liquid inside the telescopic vibration film, and the telescopic vibration film is vibrated by the ultrasonic energy and extrudes and breaks the bubbles in the fluid to achieve the purpose of removing the bubbles 401. In addition, the deaerator 401 and the vacuum pump 402 can be flexibly used according to the viscosity condition of actual materials, and as the mixed liquid has a certain viscosity, bubbles generated by stirring by the deaeration stirring mechanism 403 are not easy to float upwards, and the deaerator 401 and the vacuum pump 402 can be only used or used in combination according to the actual material condition.
As shown in fig. 2, the mixed liquid degassing storage tank 4 is connected to a magnetic particle dripping preparation system through a fourth pipeline 404, and in this embodiment, the magnetic particle dripping preparation system includes a dripping device 5 and a magnetic particle solidifying device 6, wherein the fourth pipeline 404 is connected to the dripping device 5, and liquid drops generated by the dripping device 5 fall into the magnetic particle solidifying device 6 and solidify into particles.
The working principle of the utility model is as follows:
In one application example of the utility model, the clay mineral A is powdery attapulgite, the clay mineral B is zeolite, the magnetic material is magnetic ferroferric oxide powder, magnetic iron slag powder, magnetic reduced iron slag powder and the like, the coupling agent can be one of silane coupling agents such as 3-mercaptopropyl triethoxysilane (KH-580) or other organic functional silane coupling agents (such as KH-540, KH-550, KH-560 and the like), the particle fixing material is natural polymer sodium alginate, and the utility model forms magnetic composite particle pellets through crosslinking reaction of sodium alginate solution (with certain viscosity) and calcium ions, and the magnetic particles for pollution soil metal pollution reduction restoration are obtained after the magnetic particles are dried.
The specific process flow of the application example is as follows:
Firstly, 2.0kg of attapulgite powder (80-300 meshes) is added into a raw material modification tank 1 as clay mineral A, then 40.3L of softened water is added into the raw material modification tank 1 through a first water pipe, a modification stirring mechanism 103 is started, 860mL of absolute ethyl alcohol and 489mL of silane coupling agent are added into the raw material modification tank 1 to start a material modification reaction, the modification time is set to be 2.5 hours, 129L of softened water is simultaneously added into a mixed solution pre-stirring tank 2 through a second water pipe 204, 2.0kg of sodium alginate powder is slowly (for example, 120 g/min) added into the mixed solution pre-stirring tank 2 through a second feeding device 201, and a pre-stirring mechanism 203 is started, wherein the sodium alginate powder is slowly dissolved in water, so that a small amount of dispersion addition is needed to be realized by controlling the feeding amount of the second feeding device 201, the sodium alginate powder is matched with the pre-stirring mechanism 203 to prevent the sodium alginate powder from binding to form a mass, after the sodium alginate powder is completely dissolved to form a solution with viscosity, the mixed solution is uniformly mixed by a third feeding device 202, the mixed solution pre-stirring tank 2 is continuously stirred into the mixed solution, and the mixed solution is prepared by adding the mixed solution pre-stirring tank 2 as a magnetic material, and the mixed material is mixed by the mixed solution 2 is continuously after the mixed solution is stirred by the pre-stirring 2 is mixed with the mixed by the magnetic material.
After the modification of the raw materials and the pre-stirring of the mixed solution are completed, respectively pumping the materials in the raw material modification tank 1 and the mixed solution pre-stirring tank 2 into the mixed solution preparation tank 3, starting a preparation stirring mechanism 301 to stir the materials to be completely mixed, and conveying the materials to a mixed solution degassing storage tank 4 to remove residual bubbles in the mixed solution, wherein the preparation stirring mechanism specifically comprises the following steps: the vacuum pump 402 at the upper end of the mixed solution degassing storage tank body 4 vacuumizes the inside of the mixed solution degassing storage tank body 4, the material in the mixed solution preparation tank body 3 is driven by the material quantifying pump 3022 to enter the mixed solution degassing storage tank body 4, then the degassing stirring mechanism 403 is started to stir the material, and the degassing device 401 is started to remove the dissolved air in the stirring process so as to prevent residual bubbles from damaging the material structure in the subsequent solidification process. The deaerator 401 and the vacuum pump 402 can be flexibly used according to the viscosity condition of actual materials, namely, the deaerator 401 and the vacuum pump 402 can be used only by one or both of them in a matched way.
As shown in fig. 2, the pretreated material enters the dropping device 5 through the fourth pipeline 404, the dropping device 5 generates liquid drops which fall into the magnetic particle solidifying device 6 and solidify into particles, in this application example, the magnetic particle solidifying device 6 is a solution tank, caCl 2 solution is contained in the solution tank as cross-linking solution, the dropping device 5 comprises a dropping storage cavity, a dropping plate with a plurality of dropping holes is arranged at the lower side of the dropping storage cavity, the pretreated material enters the dropping storage cavity through the fourth pipeline 404, then drops into liquid drops through each dropping hole, a quantitative output device such as an output control valve or a quantitative output pump is arranged in each dropping hole to precisely control the output quantity of the material dropped into each dropping hole, the output control valve and the quantitative output pump are all known in the field and are commercial products, the liquid drops dropped from the dropping device 5 and the cross-linking solution in the magnetic particle solidifying device 6 are in contact with instant reaction to solidify into solid gel particles and precipitate, then the solid gel particles are fully transferred into the magnetic particle washing device 8 through the magnetic particle washing device, and finally the magnetic particle washing device 8 is packaged by the magnetic particle washing device 9, and the magnetic particle washing system is completely transferred into the magnetic particle washing device 9, and finally the magnetic particle washing system is packaged by the magnetic particle washing device is packaged by the known device 9.
Claims (8)
1. A pretreatment system for a soil heavy metal reduction purification material is characterized in that: comprises a raw material modification tank body (1), a mixed liquid pre-stirring tank body (2), a mixed liquid preparation tank body (3) and a mixed liquid degassing storage tank body (4), wherein a first water pipe and a plurality of feed inlets are arranged on the raw material modification tank body (1), clay mineral A is driven to be fed into the first feed inlet (102) through a first feed device (101), a coupling agent is fed into the second feed inlet, absolute ethyl alcohol is fed into a third feed inlet, a modification stirring mechanism (103) is arranged in the raw material modification tank body (1), an output port of the raw material modification tank body (1) is connected with the first feed inlet on the mixed liquid preparation tank body (3) through a first connecting pipeline (105), a second water pipe (204) and a plurality of feed inlets are arranged on the mixed liquid pre-stirring tank body (2), clay mineral B is driven to be fed into the first feed inlet through a second feed inlet through a first feed inlet through a third feed inlet (202), a magnetic material is driven to be fed into the second feed inlet through a third feed inlet, a particle fixing material is fed into the third feed inlet, an output port of the mixed liquid pre-stirring tank body (2) is provided with a pre-stirring mechanism (203) and a mixed liquid preparation tank body (301) is connected with the mixed liquid preparation tank body (3), the mixed liquid preparation tank body (3) is connected with the mixed liquid degassing storage tank body (4) through a third connecting pipeline (302), a degassing device (401) and a degassing stirring mechanism (403) are arranged in the mixed liquid degassing storage tank body (4), and a vacuum pump (402) is arranged at the upper end of the mixed liquid degassing storage tank body (4).
2. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the first feeding device (101), the second feeding device (201) and the third feeding device (202) are all transmission augers, and the first feeding device (101), the second feeding device (201) and the third feeding device (202) are controlled by the control system (10).
3. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the modified stirring mechanism (103), the pre-stirring mechanism (203), the preparation stirring mechanism (301) and the degassing stirring mechanism (403) are identical in structure and comprise a stirring shaft and a stirring motor, wherein the upper end of the stirring shaft is fixedly connected with the stirring motor, stirring blades are arranged on the stirring shaft main body, and the stirring motor is controlled by a control system (10).
4. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the first water delivery pipe and the second water delivery pipe (204) are respectively provided with a water delivery fixed displacement pump (2041), and the water delivery fixed displacement pumps (2041) are controlled by the control system (10).
5. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the output port of the raw material modification tank body (1) is provided with an output control valve (104) which is connected with the first connecting pipeline (105), the second connecting pipeline (205) is provided with a mixed liquid quantitative pump (2051), and the output control valve (104) and the mixed liquid quantitative pump (2051) are controlled by a control system (10).
6. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the material in the mixed liquid preparation tank body (3) enters the mixed liquid degassing storage tank body (4) through a third connecting pipeline (302), a one-way valve (3021) and a material quantifying pump (3022) are arranged on the third connecting pipeline (302), and the material quantifying pump (3022), the degassing device (401) and the vacuum pump (402) are controlled through a control system (10).
7. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the softened water is added into the mixed solution pre-stirring tank body (2) through a second water pipe (204), sodium alginate powder is added into the mixed solution pre-stirring tank body through a second feeding device (201), a pre-stirring mechanism (203) is synchronously started, after sodium alginate is completely dissolved, clay mineral B is input into the mixed solution pre-stirring tank body (2) through a third feeding device (202), and then the magnetic material is added into the mixed solution pre-stirring tank body (2).
8. The pretreatment system for soil heavy metal reduction and purification materials according to claim 1, wherein: the mixed liquid degassing storage tank body (4) is connected with the dropping device (5) through a fourth pipeline (404), and liquid drops generated by the dropping device (5) fall into the magnetic particle solidifying device (6) containing the crosslinking solution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323219548.9U CN221287634U (en) | 2023-11-28 | 2023-11-28 | Pretreatment system for soil heavy metal decrement purification material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323219548.9U CN221287634U (en) | 2023-11-28 | 2023-11-28 | Pretreatment system for soil heavy metal decrement purification material |
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| CN221287634U true CN221287634U (en) | 2024-07-09 |
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| CN202323219548.9U Active CN221287634U (en) | 2023-11-28 | 2023-11-28 | Pretreatment system for soil heavy metal decrement purification material |
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| CN (1) | CN221287634U (en) |
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