CN205590619U - Device of preparation heavy metal contaminated soil passivating agent - Google Patents
Device of preparation heavy metal contaminated soil passivating agent Download PDFInfo
- Publication number
- CN205590619U CN205590619U CN201620434765.0U CN201620434765U CN205590619U CN 205590619 U CN205590619 U CN 205590619U CN 201620434765 U CN201620434765 U CN 201620434765U CN 205590619 U CN205590619 U CN 205590619U
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- China
- Prior art keywords
- pyrolysis chamber
- contaminated soil
- pyrolysis
- metal contaminated
- heavy metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The utility model discloses a device of preparation heavy metal contaminated soil passivating agent, including the screw feeding ware, still include the pyrolysis oven, the pyrolysis oven includes pyrolysis chamber and the toper air inlet housing that communicates bottom the pyrolysis chamber, be provided with the board that admits air between pyrolysis chamber and the toper air inlet housing, it is provided with the nozzle of air supply on the board to admit air, the screw feeding ware is connected with the upper portion of pyrolysis chamber, the lower part and the spiral discharge ware of pyrolysis chamber are connected, the lower part of pyrolysis chamber still is connected with the combustor, the spiral discharge ware is connected with connecing the workbin, pass through the flowmeter at the bottom of the awl of toper air inlet housing, the control valve is connected with the carbon dioxide gas bottle. The utility model discloses have better normal position repair effect to heavy metal contaminated soil, preparation method is simple and convenient, easily industrial production.
Description
Technical field
This utility model relates to heavy-metal contaminated soil control field, particularly relates to a kind of device preparing heavy-metal contaminated soil passivator.
Background technology
The most contaminated by heavy metals close to the arable land of account for all arable lands 19.4% in China.Heavy metal is ingested by the migration pattern of soil-crop-food and is detrimental to health, and therefore heavy metal contaminated soil carries out administering very urgent.Heavy metal pollution of soil is administered mainly following approach: one is the fractions distribution changing heavy metal-polluted soil, reduces animal migration and the biological effectiveness of heavy metal-polluted soil；Two are utilizing works or heavy metal is removed from soil by biotechnology.Traditional heavy metal soil remediation method includes: soil removal and replacement, precipitation, electro reclamation, Soil leaching.Although above method has reached to reduce the purpose of hazard of contaminant, but the method need to expend substantial amounts of manpower, financial resources and material resources, relatively costly, and fails fundamentally to remove heavy metal, is not the most a kind of method of preferable improvement heavy metal pollution of soil.
And the invention provides a kind of new technology preparing heavy-metal contaminated soil passivator, relative to traditional renovation technique, more save manpower and financial resources, and recovery technique practical operation is more convenient and will not cause secondary damage in heavy metal pollution arable land.
Utilize the agricultural wastes such as straw as raw material, under carbon dioxide is as reacting gas, range of reaction temperature 350～400 degree, the soil heavy metal passivant (BC400) of preparation, it is that a kind of space is more flourishing, the passivating material that specific surface area more strengthens, heavy metal contaminated soil has good in-situ immobilization effect, it is also possible to play the change physics of soil, chemistry and the effect etc. of biological property.Test shows, is applied with in the heavy-metal contaminated soil of BC400 soil passivator, and plant germination percentage height and riotous growth, heavy metal passivation effect is the best.
Utility model content
In order to solve the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of device preparing heavy-metal contaminated soil passivator, it is achieved the purpose of in-situ remediation soil polluted by heavy metals so that heavy-metal contaminated soil can again do agriculture plantation and use.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of device preparing heavy-metal contaminated soil passivator, including feeding screw, also include pyrolysis oven, pyrolysis oven include pyrolysis chamber and with the taper inlet plenum connected bottom pyrolysis chamber, it is provided with inlet plate between pyrolysis chamber and taper inlet plenum, nozzle of air supply it is provided with on inlet plate, feeding screw is connected with the top of pyrolysis chamber, the bottom of pyrolysis chamber is connected with spiral discharging device, the bottom of pyrolysis chamber is also connected with burner, spiral discharging device is connected with splicing case, is connected with dioxide bottle by effusion meter, control valve at the bottom of the cone of taper inlet plenum.
This utility model has the advantages that relative to prior art
1, heavy metal contaminated soil has preferable in-situ immobilization effect, and preparation method is easy, it is easy to industrialized production.
2, use the passivator that this utility model produces compared with existing soil passivator, the bigger space of specific surface area is more flourishing, the in-situ immobilization effect of heavy metal (such as heavy metal cadmium etc.) contaminated soil is notable, also making moderate progress physics, chemistry and the biological property of soil equally, water retention property and permeability such as soil are more preferable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-feeding screw；2-burner；3-pyrolysis oven；301-pyrolysis chamber；302-taper inlet plenum；303-inlet plate；304-nozzle of air supply；4-spiral discharging device；5-splicing case；6-effusion meter；7-control valve；8-dioxide bottle；9-passivator.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment 1
A kind of device preparing heavy-metal contaminated soil passivator, including feeding screw 1, also include pyrolysis oven 3, pyrolysis oven 3 include pyrolysis chamber 301 and with the taper inlet plenum 302 connected bottom pyrolysis chamber 301, inlet plate 303 it is provided with between pyrolysis chamber 301 and taper inlet plenum 302, nozzle of air supply 304 it is provided with on inlet plate 303, feeding screw 1 is connected with the top of pyrolysis chamber 301, the bottom of pyrolysis chamber 301 is connected with spiral discharging device 4, the bottom of pyrolysis chamber 301 is also connected with burner 2, spiral discharging device 4 is connected with splicing case 5, by effusion meter 6 at the bottom of the cone of taper inlet plenum 302, control valve 7 is connected with dioxide bottle 8.
Agricultural wastes (straw etc.) raw material obtained in use, is dried by this utility model.Dried agriculture waste raw material is used crusher in crushing, obtains preparing the raw material of heavy-metal contaminated soil passivator.The raw material preparing heavy-metal contaminated soil passivator handled well is input to pyrolysis chamber 301 by feeding screw 1, carbon dioxide in dioxide bottle 8 is input to taper inlet plenum 302 by effusion meter 6 under the control of control valve 7 simultaneously, carbon dioxide is injected in pyrolysis chamber 301 by the nozzle of air supply 304 on inlet plate 303, the hot-air that burner 2 produces due to burning is passed in pyrolysis chamber 301, and keeping the pyrolysis temperature in pyrolysis chamber 301 is 350～500 degrees Celsius.Pyrolysis time in pyrolysis chamber 301 is 40～50 minutes.Being pyrolyzed rear natural cooling, the heavy-metal contaminated soil passivator after natural cooling arrives splicing case 5 by spiral discharging device 4 output.Preferably, it is thus achieved that heavy-metal contaminated soil passivator dosage be the 2% to 5% of contaminated soil net weight.
The heavy-metal contaminated soil passivator obtained is used to do contrast test: to obtain contaminated soil, every kilogram of Cadium In Polluted Soil content is 20mg, heavy-metal contaminated soil passivator is joined in contaminated soil according to 2% dosage and mixes, soil 1 as a comparison after placing 2 weeks.Contaminated soil soil 2 as a comparison of heavy-metal contaminated soil passivator will not added.Contrast soil 1 is put into flowerpot 1, contrast soil 2 is put into flowerpot 2.Choosing full and uniformity Lettuce seed and directly sow in flowerpot 1 and flowerpot 2, depth of planting is about 1cm, and every basin 40 Lettuce seeds of sowing, during whole plantation, water and fertilizer condition is consistent, prevents and treats disease pest and weed in time, it is ensured that Lettuce normal growth.After growing two weeks, the Lettuce growth of seedling in flowerpot 1 is good, and the heavy metal cadmium in heavy-metal contaminated soil passivator largely Passivation Treatment contaminated soil is described, makes the plant can be with normal growth, and the Lettuce seedling in flowerpot 2 dies the most completely.
Specific embodiment described herein is only to this utility model spirit explanation for example.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by this utility model person of ordinary skill in the field, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (1)
- null1. the device preparing heavy-metal contaminated soil passivator，Including feeding screw (1)，It is characterized in that，Also include pyrolysis oven (3)，Pyrolysis oven (3) includes pyrolysis chamber (301) and the taper inlet plenum (302) connected with pyrolysis chamber (301) bottom，Inlet plate (303) it is provided with between pyrolysis chamber (301) and taper inlet plenum (302)，Nozzle of air supply (304) it is provided with on inlet plate (303)，Feeding screw (1) is connected with the top of pyrolysis chamber (301)，The bottom of pyrolysis chamber (301) is connected with spiral discharging device (4)，The bottom of pyrolysis chamber (301) is also connected with burner (2)，Spiral discharging device (4) is connected with splicing case (5)，By effusion meter (6) at the bottom of the cone of taper inlet plenum (302)、Control valve (7) is connected with dioxide bottle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620434765.0U CN205590619U (en) | 2016-05-13 | 2016-05-13 | Device of preparation heavy metal contaminated soil passivating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620434765.0U CN205590619U (en) | 2016-05-13 | 2016-05-13 | Device of preparation heavy metal contaminated soil passivating agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205590619U true CN205590619U (en) | 2016-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620434765.0U Active CN205590619U (en) | 2016-05-13 | 2016-05-13 | Device of preparation heavy metal contaminated soil passivating agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205590619U (en) |
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2016
- 2016-05-13 CN CN201620434765.0U patent/CN205590619U/en active Active
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