CN204769857U - Get rid of drip washing device of soil heavy metal - Google Patents
Get rid of drip washing device of soil heavy metal Download PDFInfo
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- CN204769857U CN204769857U CN201520409289.2U CN201520409289U CN204769857U CN 204769857 U CN204769857 U CN 204769857U CN 201520409289 U CN201520409289 U CN 201520409289U CN 204769857 U CN204769857 U CN 204769857U
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Abstract
The utility model discloses a get rid of drip washing device of soil heavy metal, it includes soil crushing and screening equipment, multistage screening equipment, stirring drip washing equipment, the mud buffer pool, the leachate storage tank, the multistage screening equipment's of export termination of soil crushing and screening equipment entry end, multistage screening equipment's the exit end and the output of leachate storage tank insert the entry of stirring drip washing equipment, the exit linkage mud buffer pool of stirring drip washing equipment, the mud export of mud buffer pool is connected with filter press through the sediment stuff pump, the supernatant export of mud buffer pool is connected with leachate clarification plant's entry end, leachate clarification plant's exit end is connected through peristaltic pump and leachate storage tank. The utility model discloses major parameters such as churning time, stirring speed, water and soil proportion and the selection of soil particle diameter can suitably be adjusted to the device, are favorable to carrying on the drip washing processing of optimization to heterogeneity soil at the actual operation in -process.
Description
Technical field
The utility model relates to industrial solid wastes heavy metal pollution regulation field, specifically removes the elution device of heavy metal-polluted soil.
Background technology
Heavy metal-polluted soil elution technique can be categorized as according to Principles difference: in-situ chemical drip washing, ex-situ chemical washing.In site remediation process on the spot, Soil leaching is exactly utilize eluent that the heavy metal be adsorbed on soil is transferred to liquid phase, regathers waste liquid and processes.Chemical leaching is better for the heavily contaminated soil remediation effect of small size.
Original position elution technique is applicable in the stronger sand loam soil of water penetration, and pollutant layering should be positioned on impermeable stratum, ensures that leacheate can not polluted underground water.Then extracted out with pump from collection well by leacheate, leacheate, through collecting, carries out the removal of heavy metal and the recycling of leacheate.This technical costs is lower, and technique is simple, but remediation efficiency is low, and easily pollutes underground water, is also not suitable for being applied in solution cavity area.
Soil heterotopic chemical leaching need through steps such as excavation, migrations, then focuses on elution device and concentrate and process.Pollutant in leacheate need carry out harmless treatment, and the soil after process will carry out backfilling working.Dystopy elution technique comprises earth pillar elution method, vibration elution method, stirs elution method.Earth pillar elution method is mainly through the heavy metal in the form removal contaminated soil of soil column drip washing, dystopy elution technique can not polluted underground water, stirring drip washing is make leacheate vibrate with soil or fully mix for a long time in stirred reactor, remove the heavy metal in leacheate, this technology remediation efficiency is higher, secondary pollution risk is little, but cost is also higher.
Also do not see at present can self-service adjustment drip washing condition, improve heavy metal removing rate, solve leacheate and reclaim and the relevant report of elution device of removal heavy metal-polluted soil zinc of process problem.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of elution device of removal heavy metal-polluted soil newly, this device effectively can remove Heavy Metals in Contaminated Soils, and can self-service adjustment drip washing condition process contaminated soil, improve heavy metal removing rate, solve leacheate to reclaim and process problem simultaneously, and retain soil fertility.
The utility model solves the problems of the technologies described above with following technical scheme:
The utility model removes the elution device of heavy metal-polluted soil, it comprises soil breaking screening plant, multi-stage screening equipment, stir drip washing equipment, mud Buffer Pool, leacheate storage tank, the arrival end of the outlet termination multi-stage screening equipment of soil breaking screening plant, the entrance of drip washing equipment is stirred in the port of export of multi-stage screening equipment and the output access of leacheate storage tank, the outlet of stirring drip washing equipment connects mud Buffer Pool, the slurry outlet of mud Buffer Pool is connected with plate and frame filter press through Pulp pump, the supernatant outlet of mud Buffer Pool is connected with the arrival end of leacheate cleaning equipment, the port of export of leacheate cleaning equipment is connected with leacheate storage tank through peristaltic pump.The entrance point of described leacheate storage tank is connected in parallel acid solution and adds equipment.
Described multi-stage screening equipment comprises the first order screen cloth and second level screen cloth that are arranged above and below, and first order screen cloth is less than the screen cloth hole of soil breaking screening plant, and is greater than second level screen cloth hole.
The screen cloth hole of described soil breaking screening plant is 5-15mm, and the first order screen cloth hole of multi-stage screening equipment is 2mm-4mm, and second level screen cloth hole is 0.5mm-0.8mm.
The arrival end of described leacheate cleaning equipment is connected in parallel the delivery port of plate and frame filter press.
The charging of described stirring drip washing equipment is controlled by measuring pump.
The utility model device can effectively remove Heavy Metals in Contaminated Soils zinc, and can self-service adjustment drip washing condition process contaminated soil, improve heavy metal removing rate, after process, soil can continue as agricultural or commercial land, accomplish harmless treatment, solve leacheate simultaneously and reclaim and process problem.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model removes the elution device of heavy metal-polluted soil.
In figure: soil breaking screening plant 1, multi-stage screening equipment 2, first order screen cloth 2-1, second level screen cloth 2-2, stir drip washing equipment 3, stirring motor 3-1, paddle 3-2, mud Buffer Pool 4, plate and frame filter press 5, leacheate storage tank 6, leacheate cleaning equipment 7, Na
2s purifies 7-1, active carbon purifying 7-2, measuring pump 8, peristaltic pump 9, and acid solution adds equipment 10, Pulp pump 11.
Detailed description of the invention
As shown in Figure 1, the utility model device is by soil breaking screening plant 1, multi-stage screening equipment 2, stir drip washing equipment 3, mud Buffer Pool 4, plate and frame filter press 5, leacheate storage tank 6, leacheate cleaning equipment 7, measuring pump 8, peristaltic pump 9, acid solution is added the parts such as equipment 10 and Pulp pump 11 and is formed, wherein soil breaking screening plant 1 adopts hammer stone crusberscreen, multi-stage screening equipment 2 is provided with the first order screen cloth 2-1 and second level screen cloth 2-2 that are arranged above and below, the hole of first order screen cloth 2-1 is greater than the hole of second level screen cloth 2-2, and be less than the hole of soil breaking screening plant 1.The screen cloth hole of soil breaking screening plant 1 requires at 5-15mm, and the first order screen cloth hole of multi-stage screening equipment requires that (5-10 order, second level screen cloth hole requires at 0.5mm-0.8mm (20-35 order) at 2mm-4mm.
The hole of the soil breaking screening plant 1 in this example is 10mm, and in multi-stage screening equipment, the hole of first order screen cloth 2-1 is 8 orders (2.4mm), and the hole of second level screen cloth is 20 orders (0.8mm).
The syndeton of each parts of the utility model as shown in Figure 1, the arrival end of the outlet termination multi-stage screening equipment 2 of soil breaking screening plant 1, the entrance of drip washing equipment 3 is stirred in the port of export of multi-stage screening equipment 2 and the output access of leacheate storage tank 6, the material stirring drip washing equipment 3 enters through measuring pump 8 and controls, stirring in drip washing equipment 3 drives paddle 3-2 to rotate mixed material by stirring motor 3-1, the outlet of stirring drip washing equipment 3 connects mud Buffer Pool 4, the slurry outlet of mud Buffer Pool 4 is connected with plate and frame filter press 5 through Pulp pump 11, the supernatant outlet of mud Buffer Pool 4 is connected with the arrival end of leacheate cleaning equipment 7, the port of export of leacheate cleaning equipment 7 is connected with leacheate storage tank 6 through peristaltic pump 9, the entrance point of leacheate storage tank 6 is connected in parallel acid solution and adds equipment 10, the arrival end of leacheate cleaning equipment 7 is connected in parallel the delivery port of plate and frame filter press 5.
The major function of described soil breaking screening plant 1 carries out break process to contaminated soil, in shattering process, material entered in stirring-type drip washing equipment uniformly, reduces and cause mechanical breakdown because raw meal particle size is uneven in whipping process.
When using the utility model device, added by the leacheate prepared in leacheate storage tank 6, following current enters stirs in drip washing equipment 3.Drip washing mixing plant 3 is rounded, and leacheate and contaminated soil carry out abundant muddy water mixing in mixing plant.Material can control soil ratio example through measuring pump 8, and drip washing mixing plant lower end is provided with butterfly valve control mud and enters mud Buffer Pool 4.Under the controllable of measuring pump 8, the quality of material entered in drip washing equipment can accomplish scientific control, ensures water and soil ratio.
The major function of described drip washing Buffer Pool 4 is for tentatively to carry out initial gross separation to muddy water, after below drip washing equipment, butterfly valve is opened, mud enters in drip washing Buffer Pool 4, and send into plate and frame filter press 5 in its lower end by Pulp pump 11 and carry out mud-water separation, upper strata supernatant then enters in leacheate cleaning equipment 7.
Described leacheate cleaning equipment 7 is by Na
2s purifier 7-1 and active carbon purifying device 7-2 serial connection connects and composes, the major function of leacheate cleaning equipment 7 is store the leacheate after reclaiming mud-water separation, and connect leacheate Buffer Pool 4, leacheate is reclaimed, and enter leacheate cleaning equipment and carry out purifying, regenerating, finally reenter in leacheate storage tank 6.
Mud Buffer Pool 4 diameter that the utility model adopts is 2.5m, high 4m.The pipeline that Buffer Pool middle-end is provided with a band valve is connected with leacheate cleaning equipment 7, and bottom connects the water inlet with plate and frame filter press 5 by Pulp pump 11.
Plate and frame filter press 5 major function is carry out water and soil separation to the mud of mud Buffer Pool port, in plate and frame filter press, muddy water by charging pump with certain pressure from tailgate charging hole feed.The pressure differential that the pressure provided by charging pump is formed in filter medium both sides, realizes Separation of Solid and Liquid, by sludge dewatering to moisture content about 20%, and obtains the filter cake of clean soil.
The utility model device is in charging screening process, the soil being less than grading oscillating screen hole enters in drip washing equipment, through clean soil after drip washing backfill or his use after dehydration, leacheate then enters cleaning equipment recycling, thus completes the improvement of contaminated soil.
The utility model device suitably can adjust the major parameters such as mixing time, mixing speed, water and soil ratio and soil particle diameter selection, is conducive to carrying out optimized drip washing process for heterogeneity soil in actual mechanical process.
Claims (6)
1. remove the elution device of heavy metal-polluted soil, it is characterized in that: it comprises soil breaking screening plant, multi-stage screening equipment, stir drip washing equipment, mud Buffer Pool, leacheate storage tank, the arrival end of the outlet termination multi-stage screening equipment of soil breaking screening plant, the entrance of drip washing equipment is stirred in the port of export of multi-stage screening equipment and the output access of leacheate storage tank, the outlet of stirring drip washing equipment connects mud Buffer Pool, the slurry outlet of mud Buffer Pool is connected with plate and frame filter press through Pulp pump, the supernatant outlet of mud Buffer Pool is connected with the arrival end of leacheate cleaning equipment, the port of export of leacheate cleaning equipment is connected with leacheate storage tank through peristaltic pump.
2. remove the elution device of heavy metal-polluted soil according to claim 1, it is characterized in that: the entrance point of leacheate storage tank is connected in parallel acid solution and adds equipment.
3. according to claim 1 or 2, remove the elution device of heavy metal-polluted soil, it is characterized in that: described multi-stage screening equipment comprises the first order screen cloth and second level screen cloth that are arranged above and below, first order screen cloth is less than the screen cloth hole of soil breaking screening plant, and is greater than second level screen cloth hole.
4. remove the elution device of heavy metal-polluted soil according to claim 3, it is characterized in that, the screen cloth hole of described soil breaking screening plant is 5-15mm, and the first order screen cloth hole of multi-stage screening equipment is 2mm-4mm, and second level screen cloth hole is 0.5mm-0.8mm.
5. according to claim 1 or 2, remove the elution device of heavy metal-polluted soil, it is characterized in that: the arrival end of described leacheate cleaning equipment is connected in parallel the delivery port of plate and frame filter press.
6. according to claim 1 or 2, remove the elution device of heavy metal-polluted soil, it is characterized in that: the charging of described stirring drip washing equipment is controlled by measuring pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409289.2U CN204769857U (en) | 2015-06-12 | 2015-06-12 | Get rid of drip washing device of soil heavy metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409289.2U CN204769857U (en) | 2015-06-12 | 2015-06-12 | Get rid of drip washing device of soil heavy metal |
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| CN204769857U true CN204769857U (en) | 2015-11-18 |
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| CN201520409289.2U Active CN204769857U (en) | 2015-06-12 | 2015-06-12 | Get rid of drip washing device of soil heavy metal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964670A (en) * | 2016-07-05 | 2016-09-28 | 湖南艾布鲁环保科技有限公司 | Device and method for recycling ex-site chemical elution-remediating eluate for heavy metal contaminated soil |
| CN106269834A (en) * | 2016-10-26 | 2017-01-04 | 南通科技职业学院 | Heavy-metal contaminated soil prosthetic device and restorative procedure thereof |
| CN107774706A (en) * | 2017-11-16 | 2018-03-09 | 安徽金联地矿科技有限公司 | A kind of mining soil prosthetic device and its restorative procedure based on chemical leaching |
| CN108672483A (en) * | 2018-04-23 | 2018-10-19 | 天津大学 | The integrated restorative procedure of fluid conveying reaction and system of organo-mineral complexing contaminated soil |
-
2015
- 2015-06-12 CN CN201520409289.2U patent/CN204769857U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964670A (en) * | 2016-07-05 | 2016-09-28 | 湖南艾布鲁环保科技有限公司 | Device and method for recycling ex-site chemical elution-remediating eluate for heavy metal contaminated soil |
| CN106269834A (en) * | 2016-10-26 | 2017-01-04 | 南通科技职业学院 | Heavy-metal contaminated soil prosthetic device and restorative procedure thereof |
| CN106269834B (en) * | 2016-10-26 | 2019-03-26 | 南通科技职业学院 | Heavy-metal contaminated soil prosthetic device and its restorative procedure |
| CN107774706A (en) * | 2017-11-16 | 2018-03-09 | 安徽金联地矿科技有限公司 | A kind of mining soil prosthetic device and its restorative procedure based on chemical leaching |
| CN108672483A (en) * | 2018-04-23 | 2018-10-19 | 天津大学 | The integrated restorative procedure of fluid conveying reaction and system of organo-mineral complexing contaminated soil |
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