CN109161384A - A kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator - Google Patents
A kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator Download PDFInfo
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Abstract
The present invention relates to a kind of preparation methods of long-acting biological matter heavy-metal contaminated soil passivator, belong to soil pollution preparation technical field.The present invention is using zeolite as raw material, it is impregnated after crushing with dopamine solution, after immersion again with calcium salt hybrid reaction, prefabricated solution is obtained after adjusting pH with ammonium hydroxide, then it reacts phosphorus pentoxide and dehydrated alcohol to obtain reaction solution, filter cake will be obtained after reaction solution and prefabricated solution hybrid reaction, fermentation is blended by filter cake and rich in the biological material of amino acid and organic carboxyl acid, it is concentrated after obtaining tunning up to long-acting biological matter heavy-metal contaminated soil passivator, long-acting biological matter heavy-metal contaminated soil passivator produced by the present invention, good passivation effect, effective acting time is long, it has broad application prospects.
Description
Technical field
The present invention relates to a kind of preparation methods of long-acting biological matter heavy-metal contaminated soil passivator, belong to soil pollution system
Standby technical field.
Background technique
Soil as natural resources for the survival of mankind, while being also the place that each element of environment acutely acts on, not only
Strong mechanical support is provided for plant growth and development, and provides the fertility element such as water, fertilizer, air and heat for plant growth and development.
But recently as the rapid development of social industry, human production activity's produced pollution object is a large amount of by all means
The modes such as ground can be discharged into environment, these pollutants are eventually filled by dirt, settled, precipitation washes away enter in soil.When
When the accumulation of these pollutants in the soil is more than the environmental carrying capacity of soil, declining for function of soil ecosystem will result in
It is weak, and by the transmitting of food chain, the existence of soil animals and plants is threatened, we term it soil pollutions.Wherein, heavy metal is just
It is one of most important polluter in soil pollution.
China's contaminated soil remediation effect mainly passes through the total amount value of target contaminant and soil environment quality mark in soil
Standard is compared to evaluate, but really influence soil risk be pollutant bio-available Zn concentration；Therefore, pass through passivator original
Position recovery technique is of great significance to reduce soil available content of beary metal, and China's agricultural soil heavy metal pollution has
Have that area is big, the characteristics of being main with mild or moderate pollution, in-situ passivation recovery technique is because of easy to operate, quick and suitable large area
Pollution control and by extensive concern.
And pure biomass matal deactivator common at present causes passivator to have since biomass is easy to be degraded by microorganisms
Effect action time is short, and metal passivation effect is poor, because a kind of long-acting biological matter heavy-metal contaminated soil passivator of the invention is to soil
Recovery technique field has positive effect.
Summary of the invention
Present invention mainly solves the technical issues of, for common pure biomass matal deactivator at present since biomass is held
It is easily degraded by microorganisms, causes passivator effective acting time short, the defect of metal passivation effect difference provides a kind of long-acting life
The preparation method of substance heavy-metal contaminated soil passivator.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator, it is characterised in that specific preparation step are as follows:
(1) weigh zeolite be put into pulverizer crush 20~30min after cross 100 sieve, collect sieving zeolite powder, by zeolite powder
With mass concentration to be put into sonic oscillation instrument after the dopamine solution mixing of 1g/L, sonic oscillation impregnates 1~2h, sonic oscillation
After be separated by filtration to obtain filter residue；
(2) it after mixing the calcium chloride solution that above-mentioned filter residue and mass fraction are 30%, is adjusted with the ammonium hydroxide that mass fraction is 30%
PH to 8.5~8.8, obtains prefabricated solution, is stirred to react 1~2h after phosphorus pentoxide and dehydrated alcohol are mixed and obtains reaction solution；
(3) it is fitted into reaction kettle after mixing above-mentioned reaction solution and prefabricated solution and is stirred to react 6~8h at 70~80 DEG C, in nature
It is cooled to 12~18h of static ageing after room temperature, is separated by filtration to obtain filter cake, naturally dry obtains dry cake；
(4) it will be fitted into 1~2h of crushing in tissue pulverizer after leaf, soybean and lemon mixing will be pressed, mixed powder is obtained and minces, will mix
It is fitted into fermentor, is sealed by fermentation after closing crushed material and above-mentioned dry cake and wormcast mixing；
(5) it takes out tunning after fermentation to above-mentioned and is put into vacuum concentration pot, be concentrated under reduced pressure, discharge after concentration,
Up to long-acting biological matter heavy-metal contaminated soil passivator after packaging.
The mass ratio for the dopamine solution that zeolite powder as described in step (1) and mass concentration are 1g/L is 1:10.
The mass ratio for the calcium chloride solution that filter residue described in step (2) and mass fraction are 30% is 1:5, five oxidations two
The mass ratio of phosphorus and dehydrated alcohol is 1:6.
The mass ratio of reaction solution described in step (3) and prefabricated solution is 2:3.
It is 5:3:4 that leaf, soybean and the mass ratio of lemon are pressed described in step (4), and mixed powder minces and dry cake
And the mass ratio of wormcast is 5:3:1, the temperature of sealing and fermenting is 30~40 DEG C, and the time of sealing and fermenting is 10~12 days.
The pressure of reduced pressure described in step (5) is 800~900Pa, and the time of reduced pressure is 40~50min.
The beneficial effects of the present invention are:
(1) present invention is impregnated with dopamine solution after crushing using zeolite as raw material, uses ammonia with calcium salt hybrid reaction again after immersion
Water obtains prefabricated solution after adjusting pH, then reacts phosphorus pentoxide and dehydrated alcohol to obtain reaction solution, by reaction solution and prefabricated
Filter cake is obtained after liquid hybrid reaction, fermentation is blended by filter cake and rich in the biological material of amino acid and organic carboxyl acid, is sent out
It is concentrated after ferment product up to long-acting biological matter heavy-metal contaminated soil passivator, the present invention is first with the zeolite with porous structure
It for raw material, is impregnated with dopamine solution, using oxidation cross-linked reaction occurs under the action of dopamine in water dissolved oxygen, forms tool
There is the poly-dopamine film layer of adhesion to be attached to zeolite surface, recycle the sequestering of poly-dopamine film layer, chelating calcium chloride is molten
Calcium ion in liquid is uniformly arranged in zeolite surface, then generates phosphatide by phosphorus pentoxide and alcohol reaction, makees in ammonium hydroxide
Under, phosphatide is gradually hydrolyzed, and the calcium ion of hydroxyl and zeolite surface on phospholipid hydrolysis product slowly combines, and generates nucleus, with
The time increase gradually grow up, finally obtain surface have calcium hydroxy phosphate zeolite granular, the calcium hydroxy phosphate of zeolite surface
It can dissolve in the soil, release phosphoric acid hydrogen radical ion, then the Action of Metal Ions in phosphoric acid hydrogen radical ion and soil, generates
The extremely low metal phosphate of solubility, to achieve the purpose that fixation is heavy metal-passivated, and the calcium ion in hydroxyapatite
Ion exchange can be generated with the heavy metal ion in soil, achieved the effect that heavy metal-passivated；
(2) present invention also by surface with calcium hydroxy phosphate zeolite granular and wormcast and be rich in protein and organic carboxyl acid
Biological material mixed fermentation absorb in soil a large amount of organic matters since earthworm is in its life process and decomposed turn
The better simply compounds such as amino acid, poly- phenol are turned to, under the action of the phenol oxidase and microorganism secretion enzyme of enterocyte secretion,
Condensation forms humus, and the intrinsic colloid property of humus can improve the structure of soil, is conducive to the ventilation of soil, protects
Water, the buffer capacity for improving soil, wormcast can increase the porosity of soil, increase the quantity that soil is aggregate, have
Good physical property, it is often more important that, wormcast is because having very big surface area, making many beneficial microbe existences and having
There is the ability of good absorption and holding nutriment, earthworm alimentary canal is the microbial growths such as many bacteriums and actinomyces
One small-sized " culturing room ", make wormcast also in rich in a large amount of multiple-microorganism monoids such as bacterium, actinomyces and fungi, this
Invention is decomposed using the biological material that microbial population abundant in wormcast will be enriched in protein and organic carboxyl acid, is generated big
The amino and carboxylic group of amount, and these amino and carboxylic group are introduced into zeolite surface under the action of microorganism, thus
Increase the quantity of zeolite surface amino and carboxyl, amino and carboxyl first is hydrophilic radical, their introducing increases zeolite
Hydrophily, and zeolite specific surface area itself is huge, strong adsorption, under the double action of zeolite hydrophily and adsorptivity
The heavy metal ion dissociated in soil is enriched to around soil-repairing agent through hydrone movement, then there is sequestering carboxyl
The heavy metal ion of enrichment can be chelated and be shielded by group, improve passivation effect again；
(3) biomass passivating material and inorganic zeolite passivating material are used cooperatively by the present invention, and biomass passivating material can be with nothing
It is combined between machine passivation restoring material and forms compound, can prevented biomass passivator from degrading rapidly, make up common pure life
Species metal passivator causes passivator effective acting time short since biomass is easy to be degraded by microorganisms, metal passivation effect
The defect of fruit difference, has broad application prospects.
Specific embodiment
Weigh zeolite be put into pulverizer crush 20~30min after cross 100 sieve, collect sieving zeolite powder, by zeolite powder
The dopamine solution that end and mass concentration are 1g/L is to be put into sonic oscillation instrument after 1:10 is mixed in mass ratio, sonic oscillation leaching
1~2h of stain is separated by filtration to obtain filter residue after sonic oscillation；The calcium chloride solution that filter residue and mass fraction are 30% is pressed into matter
For amount than being to be adjusted after 1:5 is mixed with the ammonium hydroxide that mass fraction is 30%, pH to 8.5~8.8 obtains prefabricated solution, aoxidizes two for five
Phosphorus and dehydrated alcohol are to be stirred to react 1~2h after 1:6 is mixed to obtain reaction solution in mass ratio；Reaction solution and prefabricated solution are pressed into quality
Than being stirred to react 6~8h at 70~80 DEG C to be fitted into reaction kettle after 2:3 mixing, the static ageing after being naturally cooling to room temperature
12~18h is separated by filtration to obtain filter cake, and naturally dry obtains dry cake；In mass ratio for 5:3:4 will press leaf, soybean and
It is fitted into 1~2h of crushing in tissue pulverizer after lemon mixing, obtains mixed powder and minces, mixed powder is minced and above-mentioned dry cake
And wormcast is to be fitted into fermentor after 5:3:1 is mixed in mass ratio, is sealed at being 30~40 DEG C in temperature after sealing tank mouth
Fermentation 10~12 days；It is put into vacuum concentration pot to after fermentation, take out tunning, in the item that pressure is 800~900Pa
40~50min is concentrated under reduced pressure under part, discharges after concentration, is passivated after packaging up to long-acting biological matter heavy-metal contaminated soil
Agent.
Weigh zeolite be put into pulverizer crush 20min after cross 100 sieves, collect sieving zeolite powder, by zeolite powder and
The dopamine solution that mass concentration is 1g/L is to be put into sonic oscillation instrument after 1:10 is mixed in mass ratio, sonic oscillation dipping
1h is separated by filtration to obtain filter residue after sonic oscillation；It is in mass ratio by the calcium chloride solution that filter residue and mass fraction are 30%
After 1:5 mixing, adjusted with the ammonium hydroxide that mass fraction is 30%, pH to 8.5 obtains prefabricated solution, by phosphorus pentoxide and dehydrated alcohol
Reaction solution is obtained in mass ratio to be stirred to react 1h after 1:6 mixing；It is in mass ratio to be filled after 2:3 is mixed by reaction solution and prefabricated solution
Entering in reaction kettle and is stirred to react 6h at 70 DEG C, static ageing 12h, is separated by filtration to obtain filter cake after being naturally cooling to room temperature,
Naturally dry obtains dry cake；Tissue pulverizer is packed into after mixing in mass ratio by leaf, soybean and lemon for 5:3:4
Middle crushing 1h, obtains mixed powder and minces, and mixed powder is minced and is mixed in mass ratio for 5:3:1 with above-mentioned dry cake and wormcast
It is fitted into fermentor after conjunction, is sealed by fermentation 10 days at being 30 DEG C in temperature after sealing tank mouth；It is produced to after fermentation, take out fermentation
Object is put into vacuum concentration pot, and 40min is concentrated under reduced pressure under conditions of pressure is 800Pa, discharges after concentration, after packaging i.e.
Obtain long-acting biological matter heavy-metal contaminated soil passivator.
Weigh zeolite be put into pulverizer crush 25min after cross 100 sieves, collect sieving zeolite powder, by zeolite powder and
The dopamine solution that mass concentration is 1g/L is to be put into sonic oscillation instrument after 1:10 is mixed in mass ratio, sonic oscillation dipping
2h is separated by filtration to obtain filter residue after sonic oscillation；It is in mass ratio by the calcium chloride solution that filter residue and mass fraction are 30%
After 1:5 mixing, adjusted with the ammonium hydroxide that mass fraction is 30%, pH to 8.6 obtains prefabricated solution, by phosphorus pentoxide and dehydrated alcohol
Reaction solution is obtained in mass ratio to be stirred to react 2h after 1:6 mixing；It is in mass ratio to be filled after 2:3 is mixed by reaction solution and prefabricated solution
Entering in reaction kettle and is stirred to react 7h at 75 DEG C, static ageing 15h, is separated by filtration to obtain filter cake after being naturally cooling to room temperature,
Naturally dry obtains dry cake；Tissue pulverizer is packed into after mixing in mass ratio by leaf, soybean and lemon for 5:3:4
Middle crushing 2h, obtains mixed powder and minces, and mixed powder is minced and is mixed in mass ratio for 5:3:1 with above-mentioned dry cake and wormcast
It is fitted into fermentor after conjunction, is sealed by fermentation 11 days at being 35 DEG C in temperature after sealing tank mouth；It is produced to after fermentation, take out fermentation
Object is put into vacuum concentration pot, and 45min is concentrated under reduced pressure under conditions of pressure is 850Pa, discharges after concentration, after packaging i.e.
Obtain long-acting biological matter heavy-metal contaminated soil passivator.
Weigh zeolite be put into pulverizer crush 30min after cross 100 sieves, collect sieving zeolite powder, by zeolite powder and
The dopamine solution that mass concentration is 1g/L is to be put into sonic oscillation instrument after 1:10 is mixed in mass ratio, sonic oscillation dipping
2h is separated by filtration to obtain filter residue after sonic oscillation；It is in mass ratio by the calcium chloride solution that filter residue and mass fraction are 30%
After 1:5 mixing, adjusted with the ammonium hydroxide that mass fraction is 30%, pH to 8.8 obtains prefabricated solution, by phosphorus pentoxide and dehydrated alcohol
Reaction solution is obtained in mass ratio to be stirred to react 2h after 1:6 mixing；It is in mass ratio to be filled after 2:3 is mixed by reaction solution and prefabricated solution
Entering in reaction kettle and is stirred to react 8h at 80 DEG C, static ageing 18h, is separated by filtration to obtain filter cake after being naturally cooling to room temperature,
Naturally dry obtains dry cake；Tissue pulverizer is packed into after mixing in mass ratio by leaf, soybean and lemon for 5:3:4
Middle crushing 2h, obtains mixed powder and minces, and mixed powder is minced and is mixed in mass ratio for 5:3:1 with above-mentioned dry cake and wormcast
It is fitted into fermentor after conjunction, is sealed by fermentation 12 days at being 40 DEG C in temperature after sealing tank mouth；It is produced to after fermentation, take out fermentation
Object is put into vacuum concentration pot, and 50min is concentrated under reduced pressure under conditions of pressure is 900Pa, discharges after concentration, after packaging i.e.
Obtain long-acting biological matter heavy-metal contaminated soil passivator.
Reference examples are using the pure biomass heavy metal deactivator that Guangzhou company produces as reference examples
Performance detection is carried out to the passivator in passivator produced by the present invention and reference examples, testing result is as shown in table 1:
1 performance test results of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Zinc content in soil (mg/kg) after application passivator one month | 4.01 | 3.92 | 3.85 | 5.92 |
| Cadmium content (mg/kg) in soil after application passivator one month | 0.10 | 0.09 | 0.07 | 0.22 |
| Lead content (mg/kg) in soil after application passivator one month | 1.52 | 1.49 | 1.45 | 1.89 |
| Passivator effective acting time (moon) | 5 | 5 | 5 | 1 |
Long-acting biological matter heavy-metal contaminated soil passivator produced by the present invention, blunt it can be seen from the detection data in upper table
Change effect is good, and effective acting time is long, has broad application prospects.
Claims (6)
1. a kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator, it is characterised in that specific preparation step are as follows:
(1) weigh zeolite be put into pulverizer crush 20~30min after cross 100 sieve, collect sieving zeolite powder, by zeolite powder
With mass concentration to be put into sonic oscillation instrument after the dopamine solution mixing of 1g/L, sonic oscillation impregnates 1~2h, sonic oscillation
After be separated by filtration to obtain filter residue；
(2) it after mixing the calcium chloride solution that above-mentioned filter residue and mass fraction are 30%, is adjusted with the ammonium hydroxide that mass fraction is 30%
PH to 8.5~8.8, obtains prefabricated solution, is stirred to react 1~2h after phosphorus pentoxide and dehydrated alcohol are mixed and obtains reaction solution；
(3) it is fitted into reaction kettle after mixing above-mentioned reaction solution and prefabricated solution and is stirred to react 6~8h at 70~80 DEG C, in nature
It is cooled to 12~18h of static ageing after room temperature, is separated by filtration to obtain filter cake, naturally dry obtains dry cake；
(4) it will be fitted into 1~2h of crushing in tissue pulverizer after leaf, soybean and lemon mixing will be pressed, mixed powder is obtained and minces, will mix
It is fitted into fermentor, is sealed by fermentation after closing crushed material and above-mentioned dry cake and wormcast mixing；
(5) it takes out tunning after fermentation to above-mentioned and is put into vacuum concentration pot, be concentrated under reduced pressure, discharge after concentration,
Up to long-acting biological matter heavy-metal contaminated soil passivator after packaging.
2. a kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator according to claim 1, feature
Be: the mass ratio for the dopamine solution that zeolite powder as described in step (1) and mass concentration are 1g/L is 1:10.
3. a kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator according to claim 1, feature
Be: the mass ratio for the calcium chloride solution that filter residue described in step (2) and mass fraction are 30% is 1:5, phosphorus pentoxide and
The mass ratio of dehydrated alcohol is 1:6.
4. a kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator according to claim 1, feature
Be: the mass ratio of reaction solution described in step (3) and prefabricated solution is 2:3.
5. a kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator according to claim 1, feature
Be: described in step (4) by leaf, soybean and the mass ratio of lemon be 5:3:4, mixed powder mince with dry cake and
The mass ratio of wormcast is 5:3:1, and the temperature of sealing and fermenting is 30~40 DEG C, and the time of sealing and fermenting is 10~12 days.
6. a kind of preparation method of long-acting biological matter heavy-metal contaminated soil passivator according to claim 1, feature
Be: the pressure of reduced pressure described in step (5) is 800~900Pa, and the time of reduced pressure is 40~50min.
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Cited By (5)
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| CN111303898A (en) * | 2020-03-13 | 2020-06-19 | 江苏和合环保集团有限公司 | Preparation method of heavy metal contaminated soil passivator |
| CN111394101A (en) * | 2020-03-13 | 2020-07-10 | 江苏和合环保集团有限公司 | Preparation method of biomass long-acting heavy metal passivator |
| CN112591899A (en) * | 2020-12-28 | 2021-04-02 | 镇江市和云工业废水处置有限公司 | Ammonia nitrogen wastewater treatment agent and preparation method thereof |
| CN114467541A (en) * | 2022-01-26 | 2022-05-13 | 西北农林科技大学 | Application of dopamine in improving heavy metal stress resistance of plants |
| CN115636501A (en) * | 2021-07-19 | 2023-01-24 | 同济大学 | Polyurethane carbon nanotube composite filler for water treatment, preparation method and application thereof |
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| CN111303898A (en) * | 2020-03-13 | 2020-06-19 | 江苏和合环保集团有限公司 | Preparation method of heavy metal contaminated soil passivator |
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| CN112591899A (en) * | 2020-12-28 | 2021-04-02 | 镇江市和云工业废水处置有限公司 | Ammonia nitrogen wastewater treatment agent and preparation method thereof |
| CN115636501A (en) * | 2021-07-19 | 2023-01-24 | 同济大学 | Polyurethane carbon nanotube composite filler for water treatment, preparation method and application thereof |
| CN114467541A (en) * | 2022-01-26 | 2022-05-13 | 西北农林科技大学 | Application of dopamine in improving heavy metal stress resistance of plants |
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Application publication date: 20190108 |