CN108641730A - A kind of soil conditioner and preparation method thereof - Google Patents
A kind of soil conditioner and preparation method thereof Download PDFInfo
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- CN108641730A CN108641730A CN201810720120.7A CN201810720120A CN108641730A CN 108641730 A CN108641730 A CN 108641730A CN 201810720120 A CN201810720120 A CN 201810720120A CN 108641730 A CN108641730 A CN 108641730A
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- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
Abstract
The invention discloses a kind of soil conditioners, including below according to the raw material of parts by weight：10 28 parts of alumine, 15 parts of sodium acetate, 4 18 parts of bog moss, half of 5 22 parts of maidenhair spleenwort, 15 40 parts of potato extract, 3 10 parts of sodium thiosulfate, 4 15 parts of sodium peroxydisulfate, 5 19 parts of caustic slag.The invention also discloses the preparation methods of the soil conditioner.Soil conditioner prepared by the present invention has excellent improved effect to heavy-metal contaminated soil, synergistic effect is played by the mutual cooperation of bog moss and half of maidenhair spleenwort, the removal effect to heavy metal ion can be effectively improved, while repairing efficiency is short, have a vast market foreground.
Description
Technical field
The present invention relates to field of environment protection, specifically a kind of soil conditioner and preparation method thereof.
Background technology
Soil is in the center of the inorganic world and living nature in terrestrial ecosystems, and energy is not only carried out in this system
With the cycle of substance, and between waters, air and biology also constantly carry out mass exchange, once pollute, three it
Between just have the mutual transmission of polluter, cause crop production reduction and quality of agricultural product to reduce, polluted underground water and surface water,
Atmosphere quality is influenced, is detrimental to health.
Soil pollutant is broadly divided into inorganic pollution and organic pollution two major classes, wherein heavy metal contaminants conduct
One kind of inorganic pollution, mobility very little, is not easy with water leaching in the soil, is not microbial degradation, by food chain into
After entering human body, potential hazard is very big.Traditional soil conditioner is not ideal enough to the improved effect of heavy-metal contaminated soil, simultaneously
Repairing efficiency is long.Therefore, design a kind of repairing efficiency it is short, to heavy-metal contaminated soil have excellent improved effect soil change
Good dose, the problem of becoming urgent need to resolve.
Invention content
The purpose of the present invention is to provide a kind of soil conditioners and preparation method thereof, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides the following technical solutions：
A kind of soil conditioner, including below according to the raw material of parts by weight：10-28 parts of alumine, 1-5 parts of sodium acetate,
4-18 parts of bog moss, half of 5-22 parts of maidenhair spleenwort, 15-40 parts of potato extract, 3-10 parts of sodium thiosulfate, sodium peroxydisulfate 4-
15 parts, 5-19 parts of caustic slag.
As a further solution of the present invention：Including below according to the raw material of parts by weight：15-24 parts of alumine, acetic acid
2-4 parts of sodium, 8-15 parts of bog moss, half of 10-18 parts of maidenhair spleenwort, 20-30 parts of potato extract, 5-9 parts of sodium thiosulfate, mistake
8-12 parts of sodium sulphate, 9-15 parts of caustic slag.
As further scheme of the invention：Including below according to the raw material of parts by weight：20 parts of alumine, sodium acetate
3 parts, 12 parts of bog moss, half of 14 parts of maidenhair spleenwort, 28 parts of potato extract, 7 parts of sodium thiosulfate, 10 parts of sodium peroxydisulfate, alkali
12 parts of clinker of property.
As further scheme of the invention：The preparation method of the potato extract is to weigh suitable potato
Stalk cleans up, and is cut into the fragment of 0.5cm × 0.5cm, the deionized water of 14 times of weight is added, using steam pressure cooker equipment
High temperature and pressure is carried out under conditions of temperature is 120 DEG C, pressure is 0.7MPa and extracts 110-180min, then through 400 mesh screen mistakes
The a quarter of aforementioned deionized water volume is concentrated into get the potato extract after filtering out slag.
As further scheme of the invention：The phosphorus content of the caustic slag is 8-16%；The alumine
Grain size is 80-180 mesh.
The preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into and is stirred into blender, bog moss is added while stirring, stands after mixing
24-48h obtains mixture A；
2) caustic slag is weighed according to parts by weight, 100-200 mesh is ground to after crushing, what is obtained in addition to step 1) is mixed
It closes in material A, mechanical agitation 20-30min obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction at a temperature of 120-200 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation 5- is carried out with the rate of 300r/min
Then 15min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
40-60min to get.
As further scheme of the invention：In step 1), the stir speed (S.S.) of the stirring is 400-800r/min.
As further scheme of the invention：In step 2), the churned mechanically stir speed (S.S.) is 300-900r/
min。
As further scheme of the invention：In step 3), the time of the hydro-thermal reaction is 10-72h.
Purposes of the soil conditioner in improveing heavy-metal contaminated soil.
Compared with prior art, the beneficial effects of the invention are as follows：
Soil conditioner prepared by the present invention has excellent improved effect to heavy-metal contaminated soil, by bog moss and
The mutual cooperation of half of maidenhair spleenwort plays synergistic effect, can effectively improve the removal effect to heavy metal ion,
Repairing efficiency is short simultaneously, has a vast market foreground.
Specific implementation mode
Technical scheme of the present invention is described in more detail With reference to embodiment.
Embodiment 1
A kind of soil conditioner, including below according to the raw material of parts by weight：10 parts of alumine, 1 part of sodium acetate, bog moss
4 parts, half of 5 parts of maidenhair spleenwort, 15 parts of potato extract, 3 parts of sodium thiosulfate, 4 parts of sodium peroxydisulfate, 5 parts of caustic slag.Its
In, the preparation method of the potato extract is to weigh suitable potato stalk to clean up, and is cut into 0.5cm × 0.5cm
Fragment, the deionized water of 14 times of weight is added, it in temperature is 0.7MPa's for 120 DEG C, pressure to use steam pressure cooker equipment
Under the conditions of carry out high temperature and pressure and extract 150min, then aforementioned deionized water volume is concentrated into after 400 mesh screen filtering and removing slag
A quarter is to get the potato extract；The phosphorus content of the caustic slag is 12%；The grain size of the alumine is
140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Embodiment 2
A kind of soil conditioner, including below according to the raw material of parts by weight：28 parts of alumine, 5 parts of sodium acetate, bog moss
18 parts, half of 22 parts of maidenhair spleenwort, 40 parts of potato extract, 10 parts of sodium thiosulfate, 15 parts of sodium peroxydisulfate, caustic slag 19
Part.Wherein, the preparation method of the potato extract is to weigh suitable potato stalk and clean up, be cut into 0.5cm ×
The fragment of 0.5cm is added the deionized water of 14 times of weight, uses the steam pressure cooker equipment to be for 120 DEG C, pressure in temperature
High temperature and pressure is carried out under conditions of 0.7MPa and extracts 150min, then is concentrated into aforementioned deionization after 400 mesh screen filtering and removing slag
The a quarter of water volume is to get the potato extract；The phosphorus content of the caustic slag is 12%；The alumine
Grain size be 140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Embodiment 3
A kind of soil conditioner, including below according to the raw material of parts by weight：19 parts of alumine, 3 parts of sodium acetate, bog moss
11 parts, half of 13.5 parts of maidenhair spleenwort, 27.5 parts of potato extract, 6.5 parts of sodium thiosulfate, 9.5 parts of sodium peroxydisulfate, basic furnace
12 parts of slag.Wherein, the preparation method of the potato extract is to weigh suitable potato stalk to clean up, and is cut into
The deionized water of 14 times of weight is added in the fragment of 0.5cm × 0.5cm, uses steam pressure cooker equipment in temperature for 120 DEG C, pressure
Power carries out high temperature and pressure under conditions of being 0.7MPa and extracts 150min, then is concentrated into aforementioned go after 400 mesh screen filtering and removing slag
The a quarter of ion water volume is to get the potato extract；The phosphorus content of the caustic slag is 12%；The high alumina
The grain size of alumina is 140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Embodiment 4
A kind of soil conditioner, including below according to the raw material of parts by weight：15 parts of alumine, 2 parts of sodium acetate, bog moss
8 parts, half of 10 parts of maidenhair spleenwort, 20 parts of potato extract, 5 parts of sodium thiosulfate, 8 parts of sodium peroxydisulfate, 9 parts of caustic slag.Its
In, the preparation method of the potato extract is to weigh suitable potato stalk to clean up, and is cut into 0.5cm × 0.5cm
Fragment, the deionized water of 14 times of weight is added, it in temperature is 0.7MPa's for 120 DEG C, pressure to use steam pressure cooker equipment
Under the conditions of carry out high temperature and pressure and extract 150min, then aforementioned deionized water volume is concentrated into after 400 mesh screen filtering and removing slag
A quarter is to get the potato extract；The phosphorus content of the caustic slag is 12%；The grain size of the alumine is
140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Embodiment 5
A kind of soil conditioner, including below according to the raw material of parts by weight：24 parts of alumine, 4 parts of sodium acetate, bog moss
15 parts, half of 18 parts of maidenhair spleenwort, 30 parts of potato extract, 9 parts of sodium thiosulfate, 12 parts of sodium peroxydisulfate, 15 parts of caustic slag.
Wherein, the preparation method of the potato extract is to weigh suitable potato stalk and clean up, be cut into 0.5cm ×
The fragment of 0.5cm is added the deionized water of 14 times of weight, uses the steam pressure cooker equipment to be for 120 DEG C, pressure in temperature
High temperature and pressure is carried out under conditions of 0.7MPa and extracts 150min, then is concentrated into aforementioned deionization after 400 mesh screen filtering and removing slag
The a quarter of water volume is to get the potato extract；The phosphorus content of the caustic slag is 12%；The alumine
Grain size be 140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Embodiment 6
A kind of soil conditioner, including below according to the raw material of parts by weight：19.5 parts of alumine, 3 parts of sodium acetate, peat
11.5 parts of moss, half of 14 parts of maidenhair spleenwort, 25 parts of potato extract, 7 parts of sodium thiosulfate, 10 parts of sodium peroxydisulfate, caustic slag
12 parts.Wherein, the preparation method of the potato extract is to weigh suitable potato stalk to clean up, and is cut into 0.5cm
The fragment of × 0.5cm is added the deionized water of 14 times of weight, uses the steam pressure cooker equipment to be for 120 DEG C, pressure in temperature
High temperature and pressure is carried out under conditions of 0.7MPa and extracts 150min, then is concentrated into aforementioned deionization after 400 mesh screen filtering and removing slag
The a quarter of water volume is to get the potato extract；The phosphorus content of the caustic slag is 12%；The alumine
Grain size be 140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Embodiment 7
A kind of soil conditioner, including below according to the raw material of parts by weight：20 parts of alumine, 3 parts of sodium acetate, bog moss
12 parts, half of 14 parts of maidenhair spleenwort, 28 parts of potato extract, 7 parts of sodium thiosulfate, 10 parts of sodium peroxydisulfate, 12 parts of caustic slag.
Wherein, the preparation method of the potato extract is to weigh suitable potato stalk and clean up, be cut into 0.5cm ×
The fragment of 0.5cm is added the deionized water of 14 times of weight, uses the steam pressure cooker equipment to be for 120 DEG C, pressure in temperature
High temperature and pressure is carried out under conditions of 0.7MPa and extracts 150min, then is concentrated into aforementioned deionization after 400 mesh screen filtering and removing slag
The a quarter of water volume is to get the potato extract；The phosphorus content of the caustic slag is 12%；The alumine
Grain size be 140 mesh.
In the present embodiment, the preparation method of the soil conditioner, steps are as follows：
1) half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, is added
Alumine is uniformly mixed, and is then fed into blender and is stirred with the stir speed (S.S.) of 600r/min, is added while stirring
Bog moss stands 36h after mixing, obtains mixture A；
2) caustic slag is weighed according to parts by weight, 150 mesh is ground to after crushing, the mixture obtained into step 1) is added
In A, mechanical agitation 25min is carried out with the stir speed (S.S.) of 600r/min, obtains mixture B；
3) according to parts by weight weigh potato extract be sent into water heating kettle in, sequentially add while stirring sodium thiosulfate and
Sodium peroxydisulfate carries out hydro-thermal reaction 36h at a temperature of 150 DEG C, obtains mixture C；
4) sodium acetate will be added in the mixture C obtained in step 3), mechanical agitation is carried out with the rate of 300r/min
Then 10min is put into blender, the mixture B obtained in step 2) is added, is stirred under the stir speed (S.S.) of 800r/min
50min to get.
Comparative example 1
Compared with Example 7, bog moss is free of, other are same as Example 7.
Comparative example 2
Compared with Example 7, half of maidenhair spleenwort is free of, other are same as Example 7.
Comparative example 3
Compared with Example 7, bog moss and half of maidenhair spleenwort are free of, other are same as Example 7.
Performance test
Performance detection is carried out to the soil conditioner of the preparation of embodiment 7 and comparative example 1-3, specific method is by this product
Be added isometric deionized water be uniformly mixed, be sprayed onto in proportion heavy-metal contaminated soil (in the heavy-metal contaminated soil,
Mercury (Hg), cadmium (Cd), chromium (Cr) and copper (Cu) initial ion concentration be 950mg/kg) on handled, naturally osmotic, 24
Do leaching experiment after hour, after measurement processing in heavy-metal contaminated soil mercury, cadmium, chromium and copper ion concentration, with each heavy metal
Initial ion concentration compared, calculate removal rate, wherein specific testing result is as shown in table 1.
It, can be effective from can be seen that the present invention in the data comparison of embodiment 7 and comparative example 1 by adding bog moss
The removal effect to heavy metal ion is improved, it is especially notable to the removal effect of mercury and cadmium；From the number of embodiment 7 and comparative example 2
According to can be seen that the present invention in comparison by the half of maidenhair spleenwort of addition, the removal effect to heavy metal ion can be effectively improved,
It is especially notable to the removal effect of mercury and cadmium；In addition, as can be seen that this hair from the data comparison of embodiment 7 and comparative example 1-3
The bright mutual cooperation by bog moss and half of maidenhair spleenwort plays synergistic function, can further effectively improve to a huge sum of money
Belong to the removal effect of ion.
1 testing result table of table
| Group | Cadmium removal rate | Mercury removal rate | Copper removal rate | Chromium removal rate |
| Embodiment 7 | 88.2% | 91.5% | 90.8% | 96.1% |
| Comparative example 1 | 51.4% | 51.2% | 85.8% | 90.1% |
| Comparative example 2 | 59.2% | 61.5% | 86.5% | 88.4% |
| Comparative example 3 | 44.7% | 42.1% | 78.5% | 82.2% |
It can be seen that improved effect of the soil conditioner of the invention prepared to heavy-metal contaminated soil from result above
It is excellent, there is good removal ability to heavy metal ion, GB15618-2008 can be reached《Standard of soil environment quality》Mark
Alignment request plays synergistic effect by the mutual cooperation of bog moss and half of maidenhair spleenwort, can effectively improve counterweight
The removal effect of metal ion, while repairing efficiency is short, has a vast market foreground.
The better embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula, one skilled in the relevant art within the scope of knowledge, can also be without departing from the purpose of the present invention
Various changes can be made.There is no necessity and possibility to exhaust all the enbodiments.And it thus amplifies out apparent
Variation or variation be still in the protection scope of this invention.
Claims (10)
1. a kind of soil conditioner, which is characterized in that including below according to the raw material of parts by weight：10-28 parts of alumine, acetic acid
1-5 parts of sodium, 4-18 parts of bog moss, half of 5-22 parts of maidenhair spleenwort, 15-40 parts of potato extract, 3-10 parts of sodium thiosulfate, mistake
4-15 parts of sodium sulphate, 5-19 parts of caustic slag.
2. soil conditioner according to claim 1, which is characterized in that including below according to the raw material of parts by weight：High alumina
15-24 parts of alumina, 2-4 parts of sodium acetate, 8-15 parts of bog moss, half of 10-18 parts of maidenhair spleenwort, 20-30 parts of potato extract, sulphur
5-9 parts of sodium thiosulfate, 8-12 parts of sodium peroxydisulfate, 9-15 parts of caustic slag.
3. soil conditioner according to claim 2, which is characterized in that including below according to the raw material of parts by weight：High alumina
20 parts of alumina, 3 parts of sodium acetate, 12 parts of bog moss, half of 14 parts of maidenhair spleenwort, 28 parts of potato extract, 7 parts of sodium thiosulfate,
10 parts of sodium peroxydisulfate, 12 parts of caustic slag.
4. soil conditioner according to claim 1 or 2 or 3, which is characterized in that the preparation side of the potato extract
Method is to weigh suitable potato stalk to clean up, and is cut into the fragment of 0.5cm × 0.5cm, the deionization of 14 times of weight is added
Water, use steam pressure cooker equipment temperature for 120 DEG C, pressure be 0.7MPa under conditions of carry out high temperature and pressure extract 110-
180min, then a quarter of aforementioned deionized water volume is concentrated into get the potato after 400 mesh screen filtering and removing slag
Extract.
5. soil conditioner according to claim 1, which is characterized in that the phosphorus content of the caustic slag is 8-16%；Institute
The grain size for stating alumine is 80-180 mesh.
6. a kind of preparation method of soil conditioner according to any one of claims 1 to 5, which is characterized in that steps are as follows：
1）Half of maidenhair spleenwort is weighed according to parts by weight, is sent into pulverizer and is ground into the fragment of 0.1cm × 0.1cm, high alumina is added
Alumina is uniformly mixed, and is then fed into and is stirred into blender, bog moss is added while stirring, stands 24- after mixing
48h obtains mixture A；
2）Caustic slag is weighed according to parts by weight, 100-200 mesh is ground to after crushing, is added to step 1）In obtained mixture
In A, mechanical agitation 20-30min obtains mixture B；
3）Potato extract is weighed according to parts by weight to be sent into water heating kettle, sequentially adds sodium thiosulfate and over cure while stirring
Sour sodium carries out hydro-thermal reaction at a temperature of 120-200 DEG C, obtains mixture C；
4）By step 3）In sodium acetate is added in obtained mixture C, mechanical agitation 5- is carried out with the rate of 300r/min
Then 15min is put into blender, step 2 is added）In obtained mixture B, stirred under the stir speed (S.S.) of 800r/min
Mix 40-60min to get.
7. the preparation method of soil conditioner according to claim 6, which is characterized in that step 1）In, the stirring
Stir speed (S.S.) is 400-800r/min.
8. the preparation method of soil conditioner according to claim 7, which is characterized in that step 2）In, the machinery stirs
The stir speed (S.S.) mixed is 300-900r/min.
9. the preparation method of soil conditioner according to claim 8, which is characterized in that step 3）In, the hydro-thermal is anti-
The time answered is 10-72h.
10. a kind of purposes of soil conditioner according to any one of claims 1 to 5 in improveing heavy-metal contaminated soil.
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Application publication date: 20181012 |