CN104004523B - A kind of vinegar grain base heavy metal renovation agent and preparation method thereof - Google Patents
A kind of vinegar grain base heavy metal renovation agent and preparation method thereof Download PDFInfo
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- CN104004523B CN104004523B CN201410234876.2A CN201410234876A CN104004523B CN 104004523 B CN104004523 B CN 104004523B CN 201410234876 A CN201410234876 A CN 201410234876A CN 104004523 B CN104004523 B CN 104004523B
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Abstract
The present invention relates to a kind of vinegar grain base heavy metal renovation agent and preparation method thereof, the renovation agent component is by weight percentage：Vinegar grain 80%, recovery of stainless steel tailings 4%, weathered coal 16%；The preparation method of the renovation agent, the detailed process are：Step a, matched by said components and mix each raw material, 4% granulating agent is added in raw mixture, then it is fully mixed；Step b, it is granulated using disc granulation method, binding agent is sprayed onto to the surface of mixed material with the mode of spraying, granulation time is controlled in 1h；Step c, the renovation agent particle screening that will have been made, it is placed in drying renovation agent finished granule in air dry oven.Renovation agent cost of the present invention is cheap, and green, raw material sources are extensive, and repairing effect is good, and preparation technology is simple, implementation easy to spread.
Description
Technical field
The present invention relates to soil remediation field, more particularly to a kind of vinegar grain base heavy metal renovation agent and preparation method thereof.
Background technology
The vinegar industry processed important industry representative as Shanxi, rapidly development caused solid waste vinegar in recent years
The yield of grain is also growing day by day.Because substantial amounts of vinegar grain does not have rational utilization ways, therefore it is deposited in environment, causes tight
The huge waste of heavily contaminated and resource.In numerous researchs that vinegar residue resource utilizes, mainly it is used as Feed Manufacturing, makees
Thing cultivation, food fermentation etc., not as the research in terms of soil-repairing agent.
The application of soil-repairing agent is to repair a kind of conventional method of impaired soil now.Soil-repairing agent composition is answered
It is miscellaneous, species is various, takes material complexity, multiple preparation technologies, repairing effect quality to differ, these are to prepare soil-repairing agent institute
What is faced must solve the problems, such as.During soil-repairing agent is prepared, the selection of material and proportioning are to prepare soil to repair
Multiple agent overriding concern and the Important Problems of research.In the selection of material, mostly from energy improved soil structure, improvement soil reason
Change property, also there are some materials having for repair function.
The techniques such as granulation are common in the preparation process of mixed organic manure, are also commonly used in the preparation process of soil-repairing agent
Arrive.Soil-repairing agent particle can effectively solve easily to isolate, caking, poor fluidity, it is difficult to the problem of realizing the application of mechanization.
Conventional production method has extruder grain method, melt pelletization method and other physics comminution granulations, and chemical method is more common has
Sour method etc..
Through consulting, the pertinent literature of research soil-repairing agent and preparation method thereof has：Patent CN103351866A China
Patent discloses a kind of method that soil-repairing agent is prepared by photocatalyst and biomass carbon, and patent CN102757896A is public
A kind of Efficient microbial soil remediation agent, the numerous culture technique of expansion of microorganism belonging to genus are opened.The preparation method of above-mentioned soil-repairing agent
It is higher to there is cost, raw material sources are not extensive enough, it is more difficult to which storage and transport, preparation technology is relatively complicated, is not involved with weight
The shortcomings of metallic prosthetic.
The pertinent literature of research heavy-metal contaminated soil renovation agent and preparation method thereof has：Patent CN102294351A is disclosed
A kind of method using Fred salts as soil polluted by heavy metal cadmium renovation agent.Patent CN100534651C discloses one kind
Heavy-metal contaminated soil renovation agent and its extracting method and its restoration of soil polluted by heavy metal using residual active sludge as raw material
Method.Patent CN103484125A discloses the preparation method and improvement that a kind of solid bamboo shoot shell base charcoal is soil conditioner
Method.It is narrow raw material sources to be present in the preparation method of above-mentioned heavy-metal contaminated soil renovation agent, and preparation method is complicated, costly
The shortcomings of.
In view of drawbacks described above, creator of the present invention obtains this creation finally by prolonged research and practice.
The content of the invention
It is an object of the invention to provide a kind of vinegar grain base heavy metal renovation agent and preparation method thereof, to overcome above-mentioned skill
Art defect.
To achieve the above object, the present invention provides a kind of vinegar grain base heavy metal renovation agent, the renovation agent component by weight hundred
Divide than meter：Vinegar grain 80%, recovery of stainless steel tailings 4%, weathered coal 16%.
Further, described vinegar grain is dried, impurity elimination through decomposed, and 1mm sieves are crossed after crushing.
Further, described vinegar grain pH is 5.30.
Further, described recovery of stainless steel tailings crosses 1mm sieves after crushed.
Further, recovery of stainless steel tailings pH is 12.23.
Further, described weathered coal crosses 1mm sieves, the weathered coal content of humic acid of the weathered coal through impurity elimination after crushing
For 35.99%, pH 7.82.
The present invention also provides a kind of preparation method of vinegar grain base heavy metal renovation agent, and the detailed process is：Step a, by upper
State component proportion to mix each raw material, 4% granulating agent is added in raw mixture, then it is fully mixed；
Step b, it is granulated using disc granulation method, binding agent is sprayed onto to the surface of mixed material with the mode of spraying, is granulated
Time control is in 1h；
Step c, the renovation agent particle screening that will have been made, it is placed in drying renovation agent finished granule in air dry oven.
Further, in above-mentioned steps a, described granulating agent is gypsum, top pure grade.
Further, in above-mentioned steps b, the binding agent is distilled water.
Further, in above-mentioned steps c, the renovation agent particle pH is 8.0, particle diameter 2mm-4mm.
Compared with prior art the beneficial effects of the present invention are：Vinegar grain base heavy metal renovation agent institute prepared by the present invention
The raw material of choosing is solid waste, and raw material sources are extensive, and cost is cheap, green, and can realize solid waste again
Make profits use, realize with pollution treatment of giving up, the beneficial effect to turn waste into wealth；
Vinegar grain base heavy metal renovation agent preparation method prepared by the present invention is simple, the raw material proportioning and prilling being related to
Equal simple possible, the preparation method for being especially different from other renovation agents, invention increases prilling, renovation agent particle contains
Water is 46.8%, granulating rate 97.3%, and returning charge rate is 25.2%, and intragranular disintegration rate is 5.0%, efficiently solves renovation agent
Easily isolation, caking, transports the problems such as inconvenient, is applicable to mass produce and widely uses；
Vinegar grain base heavy metal renovation agent prepared by the present invention is good for the repairing effect of heavy-metal contaminated soil, especially
The soil of heavy metal lead pollution, there are considerable ecological benefits.When Lead Pollution in Soil level is 250mg/kg, renovation agent it is optimal
Addition is 1%, and it is maximum up to 12.41% that effective lead content reduces amplitude.When lead contamination level is 500mg/kg, renovation agent
Optimum addition is 2%, and it is maximum up to 13.20% that effective lead content reduces amplitude.When lead contamination level is 1000mg/kg,
Renovation agent optimum addition is 2%, and effective lead content reduces amplitude and is up to 8.78%.
Brief description of the drawings
Fig. 1 is the flow chart of vinegar grain base heavy metal renovation agent preparation method of the present invention；
Fig. 2 is the adsorption effect figure of the addition to lead of vinegar grain base heavy metal renovation agent of the present invention；
Fig. 3：Under 250mg/kg lead contamination levels, influence schematic diagram of the vinegar grain base renovation agent to the effective lead content of soil；
Fig. 4：Under 500mg/kg lead contamination levels, influence schematic diagram of the vinegar grain base renovation agent to the effective lead content of soil；
Fig. 5：Under 1000mg/kg lead contamination levels, influence schematic diagram of the vinegar grain base renovation agent to the effective lead content of soil.
Embodiment
Below in conjunction with accompanying drawing, the forgoing and additional technical features and advantages are described in more detail.
A kind of vinegar grain base heavy metal renovation agent provided by the invention, component is by weight percentage：Vinegar grain 80%, stainless steel
Tailings 4%, weathered coal 16%；Described vinegar grain is dried, impurity elimination through decomposed, and 1mm sieves, pH 5.30 are crossed after crushing.
Described recovery of stainless steel tailings crosses 1mm sieves, pH 12.23 after crushed.
Described weathered coal crosses 1mm sieves through impurity elimination after crushing；The weathered coal content of humic acid of the weathered coal is
35.99%, pH 7.82.
Refer to shown in Fig. 1, it is the flow chart of the preparation method of vinegar grain base heavy metal renovation agent of the present invention；Above-mentioned vinegar grain
The preparation method of base heavy metal renovation agent, comprises the following steps：
Step a, matched by said components and mix each raw material, add 4% granulating agent in raw mixture, then by its
Fully mix；Wherein, described granulating agent is gypsum, top pure grade；
Step b, it is granulated using disc granulation method, binding agent is sprayed onto to the surface of mixed material with the mode of spraying, is granulated
Time control is in 1h；Wherein, the binding agent is distilled water；
Step c, the renovation agent particle screening that will have been made, it is placed in drying renovation agent finished granule in air dry oven；
Wherein, the renovation agent particle pH is 8.0, particle diameter 2mm-4mm.
The vinegar grain base heavy metal renovation agent and preparation method thereof is illustrated below by embodiment.
Embodiment one：The preparation of vinegar grain base heavy metal renovation agent；
Raw materials used and preparation：Vinegar grain after will be decomposed, the 7d that dries in the air is shone in atmosphere, after pulverizer crushes, cross 1mm
Sieve；Humic acid contains the weathered coal for 35.99%, crosses 1mm sieves；Recovery of stainless steel tailings crushes, and crosses 1mm sieves.
Raw material proportioning mode：Vinegar grain: weathered coal: recovery of stainless steel tailings=80: 16: 4.
Prilling：Each raw material is mixed, 4% gypsum is added in raw mixture, then it is fully mixed；Using
Disc granulation method is granulated, and distilled water is sprayed onto to the surface of mixed material with the mode of spraying, and granulation time is controlled in 1h；It will make
Renovation agent particle screening, be placed in drying renovation agent finished granule in air dry oven.
Embodiment two：The absorption property of vinegar grain base renovation agent heavy metal lead
In 200mL conical flasks, it is 20mgL to add 100mL concentration-1, pH be 4.5 pb2+Solution, then add respectively
Enter the vinegar grain base renovation agent particle 0.6g that embodiment 1 is prepared, set temperature to be 25 DEG C, rotating speed 120r.min-1Shake
Swing and take out and filter after vibrating 30min in device, determine pb in filtrate2+Concentration is 0.525mg/L, and clearance is up to 97.38%.Please
With reference to shown in Fig. 2, the experiment proves that vinegar grain base renovation agent particle heavy metal lead has good adsorption effect well, has
Great potential as heavy metal renovation agent.
Embodiment three：Repairing effect of the vinegar grain base renovation agent to heavy metal in soil lead；
Incorporated by reference to shown in Fig. 3-5, the addition level of obtained vinegar grain base renovation agent in embodiment one is set to
0%th, 0.5%, 1%, 2%.Horizontal for examination Lead Pollution in Soil is respectively 250mg/kg, 500mg/kg, 1000mg/kg.It will repair
After agent mixes with soil, 400g mixed soil is weighed respectively, is fitted into earth pillar, after keeping 7d, with the Simulated Acid Rain that pH is 4.5
Mixed acid using 480mL as experiment leaching, daily leaching 80mL, leaching speed be 20mL/h, and 24h is balanced after daily leaching is complete
Carry out leaching next time again afterwards.
As a result show, when lead contamination level is 250mg/kg, the optimum addition of renovation agent is 1%, effective lead content drop
Low amplitude is maximum up to 12.41%.When lead contamination level is 500mg/kg, the optimum addition of renovation agent is 2%, and effective lead contains
It is maximum up to 13.20% to measure reduction amplitude.When lead contamination level is 1000mg/kg, when renovation agent optimum addition is 2%,
Effective lead content reduces amplitude and is up to 8.78%.
Presently preferred embodiments of the present invention is the foregoing is only, is merely illustrative for invention, and it is nonrestrictive.
Those skilled in the art understands, can carry out many changes to it in the spirit and scope that invention claim is limited, and changes,
It is even equivalent, but fall within protection scope of the present invention.
Claims (10)
1. a kind of vinegar grain base heavy metal renovation agent, it is characterised in that the renovation agent component is by weight percentage：Vinegar grain 80%,
Recovery of stainless steel tailings 4%, weathered coal 16%.
2. vinegar grain base heavy metal renovation agent according to claim 1, it is characterised in that described vinegar grain is dried through decomposed,
Impurity elimination, 1mm sieves are crossed after crushing.
3. vinegar grain base heavy metal renovation agent according to claim 2, it is characterised in that described vinegar grain pH is 5.30.
4. vinegar grain base heavy metal renovation agent according to claim 1 or 2, it is characterised in that described recovery of stainless steel tailings warp
1mm sieves are crossed after crushing.
5. vinegar grain base heavy metal renovation agent according to claim 4, it is characterised in that recovery of stainless steel tailings pH is 12.23.
6. vinegar grain base heavy metal renovation agent according to claim 1 or 2, it is characterised in that described weathered coal through impurity elimination,
1mm sieves are crossed after crushing, the weathered coal content of humic acid of the weathered coal is 35.99%, pH 7.82.
A kind of 7. preparation method of vinegar grain base heavy metal renovation agent as described in claim 1-6 is any, it is characterised in that the tool
Body process is：Step a, each raw material is mixed by the component proportion of vinegar grain 80%, recovery of stainless steel tailings 4%, weathered coal 16%, in original
Expect the granulating agent of addition 4% in mixture, then it is fully mixed；
Step b, it is granulated using disc granulation method, binding agent is sprayed onto to the surface of mixed material, granulation time with the mode of spraying
Control is in 1h；
Step c, the renovation agent particle screening that will have been made, it is placed in drying renovation agent finished granule in air dry oven.
8. the preparation method of vinegar grain base heavy metal renovation agent according to claim 7, it is characterised in that in above-mentioned steps a
In, described granulating agent is gypsum, top pure grade.
9. the preparation method of the vinegar grain base heavy metal renovation agent according to claim 7 or 8, it is characterised in that in above-mentioned step
In rapid b, the binding agent is distilled water.
10. the preparation method of the vinegar grain base heavy metal renovation agent according to claim 7 or 8, it is characterised in that in above-mentioned step
In rapid c, the renovation agent particle pH is 8.0, particle diameter 2mm-4mm.
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| CN101863719A (en) * | 2010-05-26 | 2010-10-20 | 山西太钢不锈钢股份有限公司 | Method for preparing soil conditioner by utilizing steel slag |
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| 有机-无机复混肥圆盘造粒试验研究;孙学军，等;《中国农机化》;20050430(第2期);图1 * |
| 钢渣施用对多金属复合污染土壤的改良效果及水稻吸收重金属的影响;邓腾灏博，等;《农业环境科学学报》;20110320;第30卷(第3期);455-460 * |
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