CN203484404U - Malposed stirring and washing device for removing heavy metals in soil - Google Patents
Malposed stirring and washing device for removing heavy metals in soil Download PDFInfo
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- CN203484404U CN203484404U CN201320535107.7U CN201320535107U CN203484404U CN 203484404 U CN203484404 U CN 203484404U CN 201320535107 U CN201320535107 U CN 201320535107U CN 203484404 U CN203484404 U CN 203484404U
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Abstract
The utility model discloses a malposed stirring and washing device for removing heavy metals in soil. The malposed stirring and washing device comprises a stirring tank body, supporting legs, a stirrer and a motor, wherein the supporting legs are arranged at the bottom of the stirring tank body; the motor is arranged on the top of the stirrer; the stirrer is connected with the motor and arranged in the stirring tank body; a discharge port is formed in the bottom of the stirring tank body; bottom through holes are formed in the periphery of the discharge port; and top through holes are formed in the periphery of the motor on the top of the stirring tank body. By using the malposed stirring and washing device disclosed by the utility model, heavy metal pollutants in soil can be effectively removed; and as a stirrer system connected with the motor is adopted and a washing solution is sprayed from small holes in the bottom via a screw rod, the soil and the washing solution are fully and uniformly mixed and reacted, the defect that the soil and the periphery of the tank body are easily adhered is overcome as well, and the removal efficiency for the heavy metals in the soil can be greatly improved.
Description
Technical field
The utility model belongs to environmental protection technical field, and relate to a kind of dystopy of removing heavy metal in soil and stir elution device, specifically, particularly a kind of can reparation or the device of harmless treatment contaminated soil of site.
Background technology
The reparation of heavy-metal contaminated soil is a global difficult problem, is also a comparatively urgent job simultaneously.For domestic, due to " move back two and enter three " policy, the same court of industrial enterprise's resettlement in numerous cities to suburb or industrial park is badly in need of redevelopment, and usually there is pollution in these place soil, wherein heavy metal pollution be one compared with distinct issues, cause potential hazard to local environment and residents ' health, in the urgent need to correlation technique and equipment, carry out the reparation of soil.The contaminated soil of site recovery technique that Soil leaching technology is simple as a kind of technique, remediation efficiency is high, existing successful engineering application abroad, relevant scholar has also done many research.Chemical leaching refers to contaminated soil excavated out, and water or eluent solution clean soil, remove pollutant, then the cleaning waste water or the waste liquid that contain pollutant are processed, and clean soil can backfill or transported to other place reuses.At present in the starting stage, still there is the series of problems such as technical system not yet forms, experience shortage in the soil remediation industry of China, especially the research and development of recovery technique and equipment lag behind European and American developed countries.Some application about soil remediation are mainly in laboratory stage, although also introduced many technology and equipments, but the consideration based on the localized adaptability of technology and cost measurement, the localization soil remediation equipment that is applicable to China's national situation in the urgent need to independent research in practice, contaminated sites reparation field for China reduces rehabilitation cost, improves remediation efficiency.
In recent years, some documents about soil pollution recovery technique in domestic existing patent documentation, have been produced, the contaminated site of China is repaired at the early-stage, although domestic, used multiple restorative procedure, up to now, contaminated sites is at home repaired field, goes back neither one successful case completely, and the patent of dystopy elution device that especially relates to contaminated soil is less.China Patent Publication No. CN102601106 discloses the patent of invention of " chromium slag contaminated soil heterotopic drip washing prosthetic appliance and restorative procedure " by name, this patent relates to a kind of chromium slag contaminated soil heterotopic drip washing prosthetic appliance and restorative procedure, the Soil leaching of described equipment and dewatering system are integral type, the main spiral by horizontal placement stirs angle of rake rotation reacts soil and eluent in reaction tube drip washing section, then through reaction tube dewatering period, process, discharge soil.This device can be used for live demonstration, and volume is large, because each device connects complicated, transportation is mobile more difficult, and due to drip washing and dehydration one, add the feature of the viscosity of soil own, after processing soil, easily cause equipment to clean difficulty and the follow-up Efficiency Decreasing of reusing in process.International monopoly document has also related to some different designs about elution device and several functions.U.S. Patent number UA4318892 discloses the patent of " Heap leaching device " by name, this patent provides hollow and elongated for the dystopy elution device containing heavy metal ore, this device has ring section, upper end is injection port, surrounding is slit and bottom sealing, and this device is not suitable for for the drip washing of heavy metal in soil.In addition, U.S. Patent number US5614067 discloses the elution device patent for electrolytic silver of " Leaching device for electrolyzed silver " by name.Korean patent No. KR20100116459 discloses the patent of " Columnar leaching device for soil decontamination with radionuclides using leaching process " by name, this patent provides a kind of cylindric leaching device for the treatment of Radionuclides in Soil, its content is that the eluent in holding vessel enters elution device by transfer pump entrance, and leacheate is discharged by outlet.These Patent designs are not considered the actual characteristic of soil and leaching ability of heavy metal, can not carry out the abundant stirring of eluent and cleaning fluid and soil and mix, and being difficult to meet the recirculation use of leacheate simultaneously.
Thereby in the urgent need to a kind of stirring elution device that stirs and efficiently remove Heavy Metals in Contaminated Soils is provided, this is conducive to carry out carrying out of repair more on actual heavy metal pollution place.
Summary of the invention
The technical problem solving: the purpose of this utility model is to provide a kind of dystopy of removing heavy metal in soil to stir elution device, this device can be used for the repair process of the large particle diameter rank of place heavy metal high pollution soil, and can realize as required and stirring or the recycling of eluent, guarantee the efficient hybrid reaction of eluent and soil, overcome the defect of soil stickiness, improve the efficiency of whole place soil repair.
Technical scheme: a kind of dystopy of removing heavy metal in soil stirs elution device, comprises and stirs tank body, feet, agitator and motor, and described feet is located at stirring tank base; Motor is located at whip topping; Agitator is connected with motor, and is located at and stirs in tank body; Stir tank base and be provided with discharging opening, discharging opening is provided with bottom through-hole around; Stir tank body top motor and be provided with top through hole around.
Described motor top is connected with decelerator.
Described stirring tank base is arch form, and discharging opening is located at center, arch form bottom.
This device also comprises screw pump, and described screw pump delivery port is connected with bottom through-hole, and water inlet is connected with top through hole.
Described stirring tank body top is provided with channel-section steel, for fixed motor.
Described stirring tank body top is provided with top cover, and top cover bolt is fixed.
Described stirring tank body inner side is plastic lining layer, and centre is steel wire, and outside is staving iron plate.
Beneficial effect: by using the dystopy that the utility model provides to stir elution device, can effectively remove the heavy metal contaminants in contaminated soil; By using the agitator system being connected with motor and squeezing into the dual setting of eluent solution by screw pump from small hole at bottom part, on the one hand guaranteed fully mixing and react of soil and eluent solution, overcome on the other hand the easily defect of bonding of soil and tank body surrounding wall, and can significantly improve the removal efficiency to heavy metal in soil.
Accompanying drawing explanation
Fig. 1 is the unitary construction schematic diagram of elution device;
Fig. 2 is drip washing tank body schematical top view;
Fig. 3 is drip washing tank body surrounding wall organigram;
Fig. 4 is circulation screw pump schematic diagram;
Fig. 5 is the connection diagram of each parts of elution device;
In figure, stir tank body (1), feet (2), discharging opening (3), bottom through-hole (4), agitator (5), motor (6), decelerator (7), top through hole (8), channel-section steel (9), staving iron plate (10), steel wire (11), plastic lining layer (12), bolt (13), screw pump (14).
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1:
The device that adopts embodiment 4, on-the-ground test soil picks up from chromium slag contaminated site soil on the abandoned land of chemical plant, Hangzhou.The soil of adopting back is air-dry, and first the stainless steel sift by 6.0mm to be to remove the foreign material such as larger gravel, and then crosses the stainless steel sift of 2.0mm, standby.The technical hydrochloric acid configuration diluted acid eluent that adopts 36% purity is 0.41mol L by 1440kg concentration
-1hydrochloric acid solution by common chemical pump, by stirring tank body top, pump in drip washing agitator tank 1.Open the motor being connected with agitator 6 of placing drip washing tank top and circulate with the power supply of screw pump 14, under the drive of decelerator 7, maintain the uniform stirring of eluent solution and soil, screw pump 14 enters agitator tank by 8 pump entries (bottom through-hole) simultaneously, from the top through hole at agitator tank top, extract solution simultaneously, keep leacheate to recycle under state, the contaminated soil of site of 144kg being crossed to 2mm sieve is added and is stirred in tank body by conveyer, with the hydrochloric acid solution of 0.41M, continue circulation stirring drip washing 3h, standing sedimentation soil.Supernatant is extracted out and is placed in white storage tank with chemical pump, recording solution volume, and sampling.With 1440kg running water, by screw pump, pump into and carry out drip washing for the second time for the second time, continue circulation stirring drip washing 3h, standing sedimentation, the air-dry determination and analysis that grinds.Supernatant is extracted out and is placed in white storage tank recording solution volume with chemical pump, twice eluent solution mixed.Gather drip washing in agitator tank soil sample later simultaneously and carry out air-dry sieving for determination and analysis.The technical hydrochloric acid of 44.52kg36% purity will be added in biased sample, regulate pH to 1, add 9.19kg iron powder, after stirring and evenly mixing, carry out chromic reduction reaction, after add gradually calcium hydroxide, until pH is adjusted to 9.21, add up to and add 21.16kg calcium hydroxide, after reaction 1h, solution starts to carry out press filtration by filter press, and the clarification of water after filtration is transparent, pH is 9.72, and the water after filtration is sampled.
The major pollutants chromic removal effect of table 1 place soil after drip washing is processed
Embodiment 2:
The device that adopts embodiment 4, on-the-ground test soil picks up from chromium slag contaminated site soil on the abandoned land of chemical plant, Hangzhou.The technical hydrochloric acid configuration diluted acid eluent that adopts 36% purity is 0.82mol L by 1440kg concentration
-1hydrochloric acid solution by common chemical pump, by stirring tank body top, pump in drip washing agitator tank 1.Open the motor being connected with agitator 6 of placing at agitator tank top and circulate with the power supply of screw pump 14, under the drive of decelerator 7, maintain the uniform stirring of eluent solution and soil, screw pump 14 enters agitator tank by 8 pump entries (bottom through-hole) simultaneously, from the top through hole at agitator tank top, extract solution simultaneously, keep leacheate to recycle under state, the contaminated soil of site of 288kg being crossed to 2mm sieve is added and is stirred in tank body by conveyer, with the hydrochloric acid solution of 0.41M, continue circulation stirring drip washing 6h, standing sedimentation soil, the air-dry determination and analysis that grinds.Supernatant is placed in to white storage tank with chemical pump extraction and carries out subsequent treatment.
The major pollutants chromic removal effect of table 2 place soil after drip washing is processed
| ? | Eluent solution forms | Mixing time (h) | Hexavalent chromium removal rate (%) |
| Drip washing | 0.82M hydrochloric acid, Tu Shui compares 1:5 | 6 | 68-78 |
Embodiment 3:
The device that adopts embodiment 4, on-the-ground test soil picks up from chromium slag contaminated site soil on the abandoned land of chemical plant, Hangzhou.The technical hydrochloric acid configuration diluted acid eluent that adopts 36% purity is 0.21mol L by 1440kg concentration
-1hydrochloric acid solution by common chemical pump, by stirring tank body top, pump in drip washing agitator tank 1.Open the motor being connected with agitator 6 of placing drip washing tank top and circulate with the power supply of screw pump 14, under the drive of decelerator 7, maintain the uniform stirring of eluent solution and soil, screw pump 14 enters agitator tank by 8 pump entries (bottom through-hole) simultaneously, from the top through hole at agitator tank top, extract solution simultaneously, keep leacheate to recycle under state, the contaminated soil of site of 288kg being crossed to 2mm sieve is added and is stirred in tank body by conveyer, with the hydrochloric acid solution of 0.21M, continue circulation stirring drip washing 3h, standing sedimentation soil.Supernatant is placed in to white storage tank with chemical pump extraction and carries out subsequent treatment.With 1440kg running water, by screw pump, pump into and carry out drip washing for the second time for the second time, continue circulation stirring drip washing 3h, standing sedimentation, the air-dry determination and analysis that grinds.Supernatant is extracted out and is placed in white storage tank recording solution volume with chemical pump, twice eluent solution mixed.
The major pollutants chromic removal effect of table 3 place soil after drip washing is processed
Embodiment 4
The dystopy of removing heavy metal in soil stirs an elution device, comprises and stirs tank body 1, feet 2, agitator 5 and motor 6, and described feet is located at stirring tank base; Motor is located at whip topping; Agitator is connected with motor, and is located at and stirs in tank body; Stir tank base and be provided with discharging opening 3, discharging opening is provided with bottom through-hole 4 around; Stir tank body top motor and be provided with top through hole 8 around.Described motor top is connected with decelerator 7.Described stirring tank base is arch form, and discharging opening 3 is located at center, arch form bottom.This device also comprises screw pump 14, and described screw pump 14 delivery ports are connected with bottom through-hole, and water inlet is connected with top through hole.Described stirring tank body top is provided with channel-section steel, for fixed motor.Described stirring tank body top is provided with top cover, and top cover bolt 13 is fixing.Described stirring tank body inner side is plastic lining layer 12, and centre is steel wire 11, and outside is staving iron plate 10.Bottom through-hole is provided with 8.
Claims (7)
1. the dystopy of removing heavy metal in soil stirs an elution device, it is characterized in that comprising and stirs tank body (1), feet (2), agitator (5) and motor (6), and described feet is located at stirring tank base; Motor is located at whip topping; Agitator is connected with motor, and is located at and stirs in tank body; Stir tank base and be provided with discharging opening (3), discharging opening is provided with bottom through-hole (4) around; Stir tank body top motor and be provided with top through hole (8) around.
2. a kind of dystopy of removing heavy metal in soil according to claim 1 stirs elution device, it is characterized in that described motor top is connected with decelerator (7).
3. a kind of dystopy of removing heavy metal in soil according to claim 1 stirs elution device, it is characterized in that described stirring tank base is arch form, and discharging opening (3) is located at center, arch form bottom.
4. a kind of dystopy of removing heavy metal in soil according to claim 1 stirs elution device, characterized by further comprising screw pump (14), and the delivery port of described screw pump (14) is connected with bottom through-hole, and water inlet is connected with top through hole.
5. a kind of dystopy of removing heavy metal in soil according to claim 1 stirs elution device, it is characterized in that described stirring tank body top is provided with channel-section steel (9), for fixed motor.
6. a kind of dystopy of removing heavy metal in soil according to claim 1 stirs elution device, it is characterized in that described stirring tank body top is provided with top cover, and top cover bolt (13) is fixing.
7. a kind of dystopy of removing heavy metal in soil according to claim 1 stirs elution device, it is characterized in that described stirring tank body inner side is plastic lining layer (12), and centre is steel wire (11), and outside is staving iron plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535107.7U CN203484404U (en) | 2013-08-30 | 2013-08-30 | Malposed stirring and washing device for removing heavy metals in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535107.7U CN203484404U (en) | 2013-08-30 | 2013-08-30 | Malposed stirring and washing device for removing heavy metals in soil |
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| Publication Number | Publication Date |
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| CN203484404U true CN203484404U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320535107.7U Expired - Fee Related CN203484404U (en) | 2013-08-30 | 2013-08-30 | Malposed stirring and washing device for removing heavy metals in soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465288A (en) * | 2018-11-28 | 2019-03-15 | 无锡飞述科技有限公司 | A kind of the elution prosthetic device and its repairing and treating method of heavy-metal contaminated soil |
-
2013
- 2013-08-30 CN CN201320535107.7U patent/CN203484404U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465288A (en) * | 2018-11-28 | 2019-03-15 | 无锡飞述科技有限公司 | A kind of the elution prosthetic device and its repairing and treating method of heavy-metal contaminated soil |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20210830 |