CN110463563A - It is a kind of to use the modified montmorillonite used mixture soil modification method to industrial solid castoff and sludge - Google Patents
It is a kind of to use the modified montmorillonite used mixture soil modification method to industrial solid castoff and sludge Download PDFInfo
- Publication number
- CN110463563A CN110463563A CN201910864450.8A CN201910864450A CN110463563A CN 110463563 A CN110463563 A CN 110463563A CN 201910864450 A CN201910864450 A CN 201910864450A CN 110463563 A CN110463563 A CN 110463563A
- Authority
- CN
- China
- Prior art keywords
- parts
- soil
- modified
- sludge
- montmorillonite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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 modified montmorillonite used mixture soil modification method to industrial solid castoff and sludge is used the present invention relates to a kind of, this method includes preparing modified montmorillonoid, then modified montmorillonoid, Dian Chi Dredged bed mud, ardealite are successively uniformly mixed by a certain percentage, it adds carbide slag and carries out acid-base neutralization reaction, the heavy metal ion such as fluorine ion and Cr, Zn, Cd, As in fixed mixture, obtained solid product stockpiling ageing obtain soil in 3~6 months.Obtained soil is black gray expandable loose particles, which stablizes, and rich in multiple nutritional components needed for plant growth.The soil is suitable for the revegetation in the industrial residues stockyard such as " five exploiting fields " and ardealite, carbide slag.The method achieve the harmless treatments under various solid wastes synergistic effect, have the good feature of environmental protection and economy.
Description
Technical field
The invention belongs to solid waste innoxious process for treating fields, and in particular to a kind of modified montmorillonite used product and its
Preparation method；And it is led using the modified montmorillonite used mixture soil modification method technology to industrial solid castoff and sludge
Domain.
Background technique
Ardealite be in production process of phosphoric acid with sulfuric acid treating phosphorite when the solid slag that generates.One ton of phosphoric acid of every production
(100%P2O5) generate 5~6t of ardealite (butt).Ardealite, which removes, contains CaSO4Outside, also containing insoluble quartzy, undecomposed
Apatite, insoluble P2O5, fluorine, aluminium, magnesium phosphate, water-soluble P2O5, fluoride, the impurity such as sulfate, these impurity
Influence the utilization of ardealite.According to the statistical data of Chinese phosphorus compound fertilizer Industry Association, China's phosphate fertilizer total output 1640.7 in 2017
Ten thousand tons of (folding 100%P2O5), 1696.3 ten thousand tons of China's phosphate fertilizer total output in 2018.Phosphorus stone is generated every year with this conservative estimation China
Cream is no less than 80,000,000 tons.Accumulative volume of cargo in storage is more than 300,000,000 tons.Currently, most ardealites do stockpiling processing.
The problem of stockpiling processing, is: occupying a large amount of soils, the risk that big, operating charges are high, there is pollution environment is invested in stockyard.
Meanwhile government aspect increasing policy pressure, the whole nation all create ardealite storage yard in strict control, Guizhou Province is even more to take the lead in proposing
" with slag fixed output quota " strives the zero growth rate for realizing ardealite storage.It is contemplated that the harmless treatment of ardealite, resource can be completed
Change and utilizes the final and decisive juncture for being directly related to phosphorus compound fertilizer enterprise.Currently, the main path of ardealite comprehensive utilization has 5 aspects:
First is that being utilized as industrial chemicals: ardealite Sulphuric acid co-producing cement, ardealite thiocarbamide, ardealite Sulphuric acid ammonium, sulphur
Suan Anjiadeng compound fertilizer.Second is that the utilization in terms of building material product: cement retarder from ardealite, ardealite and cement, sandstone
Cooperation is as reinforcing weak subgrade material etc..Third is that in application agriculturally: ardealite is acidic materials, contains plant growth simultaneously
The nutrients such as required phosphorus, sulphur, calcium, silicon, magnesium can be used as the conditioner in salt-soda soil, improve the fertility of soil.Fourth is that its other party
Face, such as the filler of mine down-hole.
However current method of comprehensive utilization has the following problems: when being used as industrial chemicals, investment is larger, and product rises in value
It is lower.In terms of building materials, due in ardealite there are more impurity, when ardealite manufactures building block, plate or land plaster, often
It is relatively inaccessible to the use standard of product.Though it is more mature that ardealite does soil conditioner technology, however China salt-soda soil is mainly divided
Cloth is in East Coastal and northern desert or steppe band.And China's ardealite mainly generates ground in Guizhou, Yunnan, Hubei, Sichuan
Etc. ground.Deposits in Eastern Coastal China is transported in the soil cooking agent of ardealite preparation or the north uses, and the too long freight charges of haul distance are higher, thus
Limit use of the ardealite as soil conditioner.
Carbide slag is that calcium carbide hydrolysis obtains the waste residue after acetylene gas.According to calculating, 1t standard calcium carbide produces acetylene gas about
Generate 1.5~2t carbide slag.Carbide slag main component is calcium hydroxide, in addition there are also the metal oxides such as siliceous, iron, aluminium, magnesium,
Hydroxide, a small amount of sulfide, phosphide and acetylene gas have strong basicity, and pH is up to 12 or more.Carbide slag utilization ways master
There are following several respects.First is that with Cement production by Calcium Carbide Sludge, production carbonated lime brick, flyash brick or being used as roadbed material in terms of building materials
Material.Second is that being used for pollution administration, mainly go to absorb exhaust gas acid waste gas or waste water using the strong basicity of carbide slag.Third is that being used for
The raw material of industry is done, produces chemical products, such as prepare calcium carbonate, soda ash, calcium chloride bleaching powder, ethylene oxide with carbide slag.By
It is higher in carbide slag production building materials freight, be difficult to be mass produced, and it is lower to produce chemical products class, the market competitiveness
It is weak.In general, the comprehensive utilization ratio of carbide slag is lower.
Treating sludge is even more each lake or the problem of river always exists.Dian Chi is the maximum fresh water lake in Yunnan Province, is had
The title of plateau jewel.The twentieth century middle and later periods, with the development of economy and society, causing Dian Chi water environment situation worsening, greatly
Amount pollutant deposits in lake, forms very thick pollution layer.According to statistics, Dianchi Lake Pollution bed mud total amount has 22064 ten thousand steres.
Sediments of Dian Chi Lake dredging work starts from 1998, so far about 2000 ten thousand stere of Dredged bed mud altogether.Nitrogen, phosphorus recycling in Sediments of Dian Chi Lake
Comparision contents it is high, biological effectiveness nitrogen content reaches 453.93~1185.75mg/kg in Sediments of Dian Chi Lake, raw in Dredged bed mud
Object validity phosphorus content reaches 64.22~327.65mg/kg；Currently, Dian Chi dredging silt mainly uses stockyard to store up for a long time
Processing mode, and selected stockyard is respectively positioned on Dian Chi bank.Since the amount of dredging of Dian Chi mud is very big, and a huge sum of money for Dian Chi mud
It is more to belong to content, it is difficult to which, using mud as compost treatment, the Dian Chi mud of formation is stored up for a long time as a permanent pollutant
In Dian Chi periphery, potential harmfulness is still remained.If the disposition of Dian Chi mud does not use minimizing, innoxious, recycling
Terminal processes mode, the stockpiling of Dian Chi mud will occupy a large amount of land resource for a long time, will also hinder Dianchi Lake Pollution Synthetic
Reason is gone on smoothly.
Summary of the invention
The present invention for ardealite, carbide slag, Dian Chi Dredged bed mud comprehensive utilization ratio be high, harmless treatment difficulty is big
Problem provides a kind of using the modified montmorillonite used mixture soil modification method to industrial solid castoff and sludge.
The present invention adopts the following technical scheme that realization.
It is a kind of modified montmorillonite used, it is of the present invention modified montmorillonite used to be prepared by five kinds of raw materials；Five kinds of originals
Material is respectively as follows: ethylenediamine tetra-acetic acid, diethanol amine, welan gum, montmorillonite and water；3~5 parts of ethylenediamine tetrems are taken by mass fraction
Acid, 2~6 parts of diethanol amine, 0.2~0.4 part of welan gum, 38.8~44.6 parts of montmorillonites are added in 50 parts of water and stir, temperature control
For system at 40 DEG C~60 DEG C, reaction time 1h~2h obtains modified montmorillonoid.Montmorillonite is that one kind is born by the surface band of nano thickness
The silicate lamella of electricity, the earthy mineral of composition, the crystalline substance in crystal structure are packed together by the electrostatic interaction of interlayer
Born of the same parents are made of one layer of alumina octahedral of folder among two layers of oxygen-octahedron.With unique one-dimensional layered nano-structure and sun from
Sub- exchangeability characteristic, to assign the expansion of the possibility and application field of many modifications of montmorillonite.Give the reason of above-mentioned montmorillonite
Change property, selects montmorillonite as the important source material of technical solution of the present invention first is that highly important, but more importantly,
It needs that montmorillonite is prepared into modified montmorillonoid according to the method described above, more effective chemistry can just thus be generated to subsequent preparation
Reaction, soil quality obtained are just more preferable.
It is further five kinds of raw materials of the present invention: ethylenediamine tetra-acetic acid, diethanol amine, welan gum, montmorillonite, water
It is sequentially sequentially added according to this.
It is further that the fineness of montmorillonite of the present invention is 50~100 mesh.
Further it is that the granularity of welan gum of the present invention is greater than 95%, crosses 0.28mm sieve；Viscosity be 2000~
3000mPa.s 1%H2O, 25 DEG C.
The application method of modified montmorillonoid of the present invention, the modified montmorillonoid are used to industrial solid castoff carrying out soil
Improvement.
Use the modified montmorillonite used mixture soilization improvement side to industrial solid castoff and sludge of the present invention
Method, the present invention this approach includes the following steps content: step 1) is taken 5~8 parts of modified montmorillonoids, 34~48 by mass fraction respectively
Part sludge, 38~46 parts of ardealites, 9~12 parts of carbide slags；It is spare；Step 2) in a reservoir, according to 5~8 parts of modified montmorillonoids,
34~48 parts of sludge, 38~46 parts of ardealites order of addition successively three kinds of ingredients are mixed evenly, obtain mixture A；
Step 3) adds 9~12 parts of carbide slags on the basis of step 2 mixture A again, is uniformly mixed, adjust mixture ph to
6.8~7.5；Obtain mixture B；The mixture B that step 3) obtains is stacked ageing 3-6 months by step 4) under field conditions (factors), i.e.,
Obtain soil.
It is further that sludge of the present invention is Dian Chi Dredged bed mud；Dian Chi Dredged bed mud be by twist suction mode, from
Bank and the bed mud through mechanical desiccation are drawn up in Dian Chi, the moisture content of bed mud is 20%~30%.Twist suction mode and Smoking regime
It compares, it is more uniform to the acquirement of sludge thorough.Sluge from Dianchi Lake
It is further that ardealite of the present invention is phosphogypsum slag caused by phosphorus chemical industry, the water of ardealite
Dividing content is 10%~20%.
Further be, carbide slag of the present invention be calcium carbide hydrolysis obtain acetylene gas after waste residue, carbide slag it is aqueous
Rate is 10~20%.
Beneficial effects of the present invention and innovative point are 1) two products: a) one of product of the present invention is modified montmorillonite used, system
Preparation Method is very unique, and apply soilization improvement when can play the role of it is very important；Modified montmorillonite can be with
It is chemically reacted well with ardealite, carbide slag, sludge, to change the change of industrial solid castoff and mud mixture
Property is learned, thus will the improvement residing in soil；B) the two of product: soil produced by the present invention, the soil are black gray expandable loose particles,
PH stable, and rich in multiple nutritional components needed for plant growth.The soil is particularly suitable for " five exploiting fields " and ardealite, calcium carbide
Revegetation in the industrial residues such as slag stockyard.
2) four solutions: first is that it is not high to solve ardealite comprehensive utilization ratio, the higher problem of processing cost.Second is that solving
Ardealite handles problem, can promote the sound development of sulphur dioxide of phosphor chemical industry.Third is that it is effective to solve nitrogen, phosphorus etc. in the Dredged bed mud of Dian Chi
The rational utilization problem of ingredient.Fourth is that solving ardealite, the effective fixation problem of heavy metal ion in the Dredged bed mud of Dian Chi.
3) six big innovation: a) present invention, which limits, uses modified montmorillonoid, in addition to have as common montmorillonite water conservation and
Outside this general character of physical absorption heavy metal ion performance, due to being changed by ethylenediamine tetra-acetic acid and diethanol amine to montmorillonite
Property so that modified montmorillonoid water conservation and the effect of physical absorption heavy metal ion are strengthened, while be also equipped with chemisorption,
Chelate the effect of heavy metal ion.B) montmorillonite can reduce the leaching loss of nutrient in soil by the modification of welan gum, improve
The porosity of soil, stable soil structure reduce the soil erosion and hardened degree, improve soil aggregate structure, plant preferably
Growth.C) present invention is while using a certain amount of modified montmorillonoid, also uses a certain proportion of carbide slag, effect in addition to
Adjust ardealite and Dian Chi Dredged bed mud mixture pH value, make its suitable for plant growth, while can fix the phosphorus in mixture,
Fluorine and heavy metal ion.D) three kinds of achievable ardealite of the present invention, carbide slag, Dian Chi Dredged bed mud solid waste collaborations are made
Harmless treatment under, largely dissolve three kinds of wastes be allowed to be changed into can planting plants soil.E) mitigate three kinds of solids
Waste stores up bring environmental issue, and builds the high financial burden of cinder field bring.F) soil prepared by this method,
Rich in nutrients such as nitrogen, phosphorus needed for plant growth, soil texture is stablized, and soil water retention, porosity, pH suitable for plant are raw
The heavy metal ion content prepared in soil is grown while being reduced, is reduced to heavy metal ion to the pollution wind of environment and water body
Danger.
The present invention is further explained With reference to embodiment.
Specific embodiment
It is a kind of modified montmorillonite used, it is of the present invention modified montmorillonite used to be prepared by five kinds of raw materials；Five kinds of originals
Material is respectively as follows: ethylenediamine tetra-acetic acid, diethanol amine, welan gum, montmorillonite and water；3~5 parts of ethylenediamine tetrems are taken by mass fraction
Acid, 2~6 parts of diethanol amine, 0.2~0.4 part of welan gum, 38.8~44.6 parts of montmorillonites are added in 50 parts of water and stir, temperature control
For system at 40 DEG C~60 DEG C, reaction time 1h~2h obtains modified montmorillonoid.Montmorillonite is that one kind is born by the surface band of nano thickness
The silicate lamella of electricity, the earthy mineral of composition, the crystalline substance in crystal structure are packed together by the electrostatic interaction of interlayer
Born of the same parents are made of one layer of alumina octahedral of folder among two layers of oxygen-octahedron.With unique one-dimensional layered nano-structure and sun from
Sub- exchangeability characteristic, to assign the expansion of the possibility and application field of many modifications of montmorillonite.Give the reason of above-mentioned montmorillonite
Change property, selects montmorillonite as the important source material of technical solution of the present invention first is that highly important, but more importantly,
It needs that montmorillonite is prepared into modified montmorillonoid according to the method described above, more effective chemistry can just thus be generated to subsequent preparation
Reaction, soil quality obtained are just more preferable.
It is further five kinds of raw materials of the present invention: ethylenediamine tetra-acetic acid, diethanol amine, welan gum, montmorillonite, water
It is sequentially sequentially added according to this.
It is further that the fineness of montmorillonite of the present invention is 50~100 mesh.
Further it is that the granularity of welan gum of the present invention is greater than 95%, crosses 0.28mm sieve；Viscosity be 2000~
3000mPa.s 1%H2O, 25 DEG C.
The application method of modified montmorillonoid of the present invention, the modified montmorillonoid are used to industrial solid castoff carrying out soil
Improvement.
Use the modified montmorillonite used mixture soilization improvement side to industrial solid castoff and sludge of the present invention
Method, the present invention this approach includes the following steps content: step 1) is taken 5~8 parts of modified montmorillonoids, 34~48 by mass fraction respectively
Part sludge, 38~46 parts of ardealites, 9~12 parts of carbide slags；It is spare；Step 2) in a reservoir, according to 5~8 parts of modified montmorillonoids,
34~48 parts of sludge, 38~46 parts of ardealites order of addition successively three kinds of ingredients are mixed evenly, obtain mixture A；
Step 3) adds 9~12 parts of carbide slags on the basis of step 2 mixture A again, is uniformly mixed, adjust mixture ph to
6.8~7.5；Obtain mixture B；The mixture B that step 3) obtains is stacked ageing 3-6 months by step 4) under field conditions (factors), i.e.,
Obtain soil.
It is further that sludge of the present invention is Dian Chi Dredged bed mud；Dian Chi Dredged bed mud be by twist suction mode, from
Bank and the bed mud through mechanical desiccation are drawn up in Dian Chi, the moisture content of bed mud is 20%~30%.Twist suction mode and Smoking regime
It compares, it is more uniform to the acquirement of sludge thorough.Sluge from Dianchi Lake
It is further that ardealite of the present invention is phosphogypsum slag caused by phosphorus chemical industry, the water of ardealite
Dividing content is 10%~20%.
Further be, carbide slag of the present invention be calcium carbide hydrolysis obtain acetylene gas after waste residue, carbide slag it is aqueous
Rate is 10~20%.
Embodiment 1
(1) modified montmorillonite used preparation
3 parts of ethylenediamine tetra-acetic acids, 2 parts of diethanol amine, 0.4 part of welan gum, 44.6 parts of montmorillonites are successively taken by mass fraction
It is added in 50 parts of water and stirs, temperature is controlled at 55 DEG C, and reaction time 2h obtains modified montmorillonoid.
(2) 5 parts of modified montmorillonoids, 48 parts of Dian Chi Dredged bed muds, 38 parts of ardealites is successively taken to be mixed by mass fraction
Uniformly.
(3) be uniformly mixed by mass fraction to 9 parts of carbide slags are added in step (2), adjust mixture ph to
6.8。
(4) mixture that step (3) obtains is stored up into ageing 4 months under field conditions (factors) to get black gray expandable soil is arrived.
Embodiment 2
(1) modified montmorillonite used preparation
5 parts of ethylenediamine tetra-acetic acids, 6 parts of diethanol amine, 0.2 part of welan gum, 38.8 parts of montmorillonites are successively taken by mass fraction
It is added in 50 parts of water and stirs, temperature is controlled at 40 DEG C, and reaction time 1.5h obtains modified montmorillonoid.
(2) 8 parts of modified montmorillonoids, 34 parts of Dian Chi Dredged bed muds, 46 parts of ardealites is successively taken to be mixed by mass fraction
Uniformly.
(3) be uniformly mixed by mass fraction to 12 parts of carbide slags are added in step (2), adjust mixture ph to
7.2。
(4) mixture that step (3) obtains is stored up into ageing 6 months under field conditions (factors) to get black gray expandable soil is arrived.
Embodiment 3
(1) modified montmorillonite used preparation
4 parts of ethylenediamine tetra-acetic acids, 5 parts of diethanol amine, 0.3 part of welan gum, 40.7 parts of montmorillonites are successively taken by mass fraction
It is added in 50 parts of water and stirs, temperature is controlled at 60 DEG C, and reaction time 1h obtains modified montmorillonoid.
(2) 6 parts of modified montmorillonoids, 42 parts of Dian Chi Dredged bed muds, 42 parts of ardealites is successively taken to be mixed by mass fraction
Uniformly.
(3) be uniformly mixed by mass fraction to 10 parts of carbide slags are added in step (2), adjust mixture ph to
7.5。
(4) mixture that step (3) obtains is stored up into ageing 3 months under field conditions (factors) to get black gray expandable soil is arrived.
Comparative example 1
It is straight using stockpiling ageing 4 months under 100 parts of Dian Chi Dredged bed mud (moisture content 25%) natural conditions of mass fraction
It connects as soil.
Comparative example 2
Using 50 parts of Dian Chi Dredged bed muds (moisture content 25%) of mass fraction, 40 parts of ardealites (moisture content 15%),
10 parts of carbide slags (moisture content 15%) are mixed evenly, and are used as soil within stockpiling ageing 4 months under field conditions (factors).
Comparative example 3
Use 45 parts of Dian Chi Dredged bed muds (moisture content 25%) of mass fraction, 40 parts of ardealites (moisture content 15%), 5
The common montmorillonite (80 mesh of fineness) of part, 10 parts of carbide slags (moisture content 15%) are mixed evenly, and store up under field conditions (factors)
It is used as soil within ageing 4 months.
Performance test
1. the physicochemical data and plant growing way of soil measure the physical and chemical index of soil prepared by comparative example and embodiment respectively,
And grown on soil paspalum vaginatum is being prepared, record its growing way.
Experimental result is shown in Table 1
The physicochemical property and plant growing way of 1 soil of table
It can be seen that from the data in table 1 and Dian Chi Dredged bed mud be used alone in comparative example 1 as soil, soil reason
It is poor to change performance, is less suitable for plant growth.Comparative example 2 is that ardealite and carbide slag are added on the basis of comparative example 1.Comparison
Example 3 is that common montmorillonite is added on the basis of comparative example 2.Although comparative example 2, comparative example 3 all further improve soil
Physicochemical property, the germination percentage of plant, survival rate, growing way also increase, but are still less suitable for plant growth, also up to not
To expected effect.Compared with comparative example 1~3, Examples 1 to 3 can greatly improve the physicochemical property of soil, be allowed to be suitable for plant
Object growth.It is all up in the plant 7d germination percentage of Examples 1 to 3 plantation, 28d survival rate to 90% or more, and plant growth is good
It is good, it achieves the desired results.
2. heavy metal ions in soil assay
Measure comparative example 1~3, Examples 1 to 3 soil available heavy metal ion content, as a result such as the following table 2
2 soil available heavy metal ion content of table
As can be seen from the table, compared with comparative example 1~3, the weight of soil available can be greatly reduced in Examples 1 to 3
The concentration of metal ion.
It is above-described be only some embodiments of the invention (since formula of the invention belongs to numberical range, therefore
Embodiment cannot exhaustion, protection scope documented by the present invention wants the point range to be with numberical range and other technologies of the invention
It is quasi-), well known particular content or common sense do not describe excessively herein in scheme.It should be pointed out that above-described embodiment is not with any side
The formula limitation present invention, it is for those skilled in the art, all to be obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.This application claims protection scope should be with the content of its claim
Standard, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (9)
1. a kind of modified montmorillonite used, which is characterized in that described modified montmorillonite used to be prepared by five kinds of raw materials；Described five kinds
Raw material is respectively as follows: ethylenediamine tetra-acetic acid, diethanol amine, welan gum, montmorillonite and water；3~5 parts of ethylenediamine tetraacetics are taken by mass fraction
Acetic acid, 2~6 parts of diethanol amine, 0.2~0.4 part of welan gum, 38.8~44.6 parts of montmorillonites are added in 50 parts of water and stir, temperature
At 40 DEG C~60 DEG C, reaction time 1h~2h obtains modified montmorillonoid for control.
2. according to claim 1 modified montmorillonite used, which is characterized in that five kinds of raw materials: ethylenediamine tetra-acetic acid, two
Ethanol amine, welan gum, montmorillonite, water are sequentially sequentially added according to this.
3. according to claim 1 or 2 modified montmorillonite used, which is characterized in that the fineness of the montmorillonite is 50~100
Mesh.
4. according to claim 1 or 2 modified montmorillonite used, which is characterized in that the granularity of the welan gum is greater than 95%,
Cross 0.28mm sieve；Viscosity is 2000~3000mPa.s, 1%H2O, 25 DEG C.
5. the application method of the modified montmorillonoid prepared as claimed in claim 1 or 2, which is characterized in that the modified montmorillonoid is used
In by industrial solid castoff carry out soil improvement.
6. being changed using the modified montmorillonite used mixture soil to industrial solid castoff and sludge described in as claimed in claim 1 or 22
Good recipe method, which is characterized in that content that this approach includes the following steps: step 1) is taken 5~8 parts of modified cover to take off respectively by mass fraction
Soil, 34~48 parts of sludge, 38~46 parts of ardealites, 9~12 parts of carbide slags；It is spare；Step 2) in a reservoir, changes according to 5~8 parts
Property montmorillonite, 34~48 parts of sludge, 38~46 parts of ardealites order of addition successively three kinds of ingredients are mixed evenly, obtain
Mixture A；Step 3) adds 9~12 parts of carbide slags on the basis of step 2 mixture A again, is uniformly mixed, and adjusts mixing
Object pH value is to 6.8~7.5；Obtain mixture B；The mixture B that step 3) obtains is stacked ageing 3-6 by step 4) under field conditions (factors)
A month to get arrive soil.
7. soil modification method according to claim 6, which is characterized in that the sludge is Dian Chi Dredged bed mud；
Dian Chi Dredged bed mud is bank and the bed mud through mechanical desiccation to be drawn up from Dian Chi, the moisture content of bed mud is by twisting suction mode
20%~30%.
8. soil modification method according to claim 6, which is characterized in that the ardealite is phosphorus chemical industry institute
The phosphogypsum slag of generation, the moisture content of ardealite are 10%~20%.
9. soil modification method according to claim 6, which is characterized in that the carbide slag is that calcium carbide hydrolysis obtains
Waste residue after acetylene gas, the moisture content of carbide slag are 10~20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864450.8A CN110463563B (en) | 2019-09-12 | 2019-09-12 | Method for improving soil of mixture of industrial solid waste and sludge by using modified montmorillonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864450.8A CN110463563B (en) | 2019-09-12 | 2019-09-12 | Method for improving soil of mixture of industrial solid waste and sludge by using modified montmorillonite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110463563A true CN110463563A (en) | 2019-11-19 |
| CN110463563B CN110463563B (en) | 2021-11-16 |
Family
ID=68514037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910864450.8A Active CN110463563B (en) | 2019-09-12 | 2019-09-12 | Method for improving soil of mixture of industrial solid waste and sludge by using modified montmorillonite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110463563B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372920A (en) * | 2021-06-09 | 2021-09-10 | 华南师范大学 | Composite conditioner for soil cadmium pollution remediation and preparation method and application thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182143A (en) * | 2007-11-07 | 2008-05-21 | 北京航空航天大学 | Preparation of composite high-expansion cementing material by using industrial slag and preparation technique thereof |
| CN101781568A (en) * | 2010-02-03 | 2010-07-21 | 北京海亚地大生化科技有限公司 | Soil conditioner, preparation method and application thereof |
| CN101863601A (en) * | 2009-04-14 | 2010-10-20 | 株式会社安农津技研 | Flocculation curing agent, composition thereof and stabilization improvement method of silt type soil |
| CN102659294A (en) * | 2012-05-23 | 2012-09-12 | 重庆大学 | Method for solidifying sludge of urban sewage treatment factory by using ardealite, coal ash and carbide slag |
| CN103304302A (en) * | 2012-03-08 | 2013-09-18 | 天津市北方园林生态科学技术研究所 | Nutrient substrate used for vertical greening, three-dimensional greening and roof greening |
| CN104774620A (en) * | 2015-04-21 | 2015-07-15 | 清华大学 | Compound conditioner for vanadium contaminated soil as well as preparation method and conditioning method of conditioner |
| CN106345415A (en) * | 2016-09-21 | 2017-01-25 | 安徽瀚景观规划设计院有限公司 | Montmorillonite-based soil conditioner and preparation method thereof |
| CN107399889A (en) * | 2017-07-25 | 2017-11-28 | 云南大地绿坤环保科技有限公司 | A kind of preparation of heavy metal sewage sludge stabilizer and application process |
| CN107954805A (en) * | 2017-12-13 | 2018-04-24 | 广州普邦园林股份有限公司 | A kind of soil improvement method of sludge composting |
| CN109135759A (en) * | 2018-08-13 | 2019-01-04 | 代彦霞 | A kind of soil heavy metal renovation agent and preparation method thereof |
-
2019
- 2019-09-12 CN CN201910864450.8A patent/CN110463563B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182143A (en) * | 2007-11-07 | 2008-05-21 | 北京航空航天大学 | Preparation of composite high-expansion cementing material by using industrial slag and preparation technique thereof |
| CN101863601A (en) * | 2009-04-14 | 2010-10-20 | 株式会社安农津技研 | Flocculation curing agent, composition thereof and stabilization improvement method of silt type soil |
| CN101781568A (en) * | 2010-02-03 | 2010-07-21 | 北京海亚地大生化科技有限公司 | Soil conditioner, preparation method and application thereof |
| CN103304302A (en) * | 2012-03-08 | 2013-09-18 | 天津市北方园林生态科学技术研究所 | Nutrient substrate used for vertical greening, three-dimensional greening and roof greening |
| CN102659294A (en) * | 2012-05-23 | 2012-09-12 | 重庆大学 | Method for solidifying sludge of urban sewage treatment factory by using ardealite, coal ash and carbide slag |
| CN104774620A (en) * | 2015-04-21 | 2015-07-15 | 清华大学 | Compound conditioner for vanadium contaminated soil as well as preparation method and conditioning method of conditioner |
| CN106345415A (en) * | 2016-09-21 | 2017-01-25 | 安徽瀚景观规划设计院有限公司 | Montmorillonite-based soil conditioner and preparation method thereof |
| CN107399889A (en) * | 2017-07-25 | 2017-11-28 | 云南大地绿坤环保科技有限公司 | A kind of preparation of heavy metal sewage sludge stabilizer and application process |
| CN107954805A (en) * | 2017-12-13 | 2018-04-24 | 广州普邦园林股份有限公司 | A kind of soil improvement method of sludge composting |
| CN109135759A (en) * | 2018-08-13 | 2019-01-04 | 代彦霞 | A kind of soil heavy metal renovation agent and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372920A (en) * | 2021-06-09 | 2021-09-10 | 华南师范大学 | Composite conditioner for soil cadmium pollution remediation and preparation method and application thereof |
| CN113372920B (en) * | 2021-06-09 | 2022-03-04 | 华南师范大学 | Composite conditioner for soil cadmium pollution remediation and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110463563B (en) | 2021-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wu et al. | Utilization path of bulk industrial solid waste: A review on the multi-directional resource utilization path of phosphogypsum | |
| Guan et al. | Preparation of α-CaSO4· ½H2O with tunable morphology from flue gas desulphurization gypsum using malic acid as modifier: A theoretical and experimental study | |
| CN104190690B (en) | A kind of method and application that utilizes ammonia-soda process alkaline residue to prepare dechlorination alkaline residue mixture | |
| US20100196104A1 (en) | Co2 sequestering soil stabilization composition | |
| CN102212884A (en) | Method for preparing calcium sulfate crystal whisker from many kinds of industrial waste residue gypsum serving as raw materials | |
| CN103771820B (en) | Fresh half water phosphogypsum two mud pavement base course material | |
| CN102517026A (en) | Curing agent for stabilizing heavy metal lead pollution area containing organic matter | |
| CN102703086A (en) | Inorganic soil curing agent and preparation method thereof | |
| CN105950157A (en) | Environment-friendly inorganic soil solidification additive | |
| CN103951298B (en) | A kind of preparation method of titanium gypsum base composite gelled material and the application in dewatered sludge | |
| CN101898883B (en) | High-calcium fly ash concrete | |
| CN101880179B (en) | Method for preparing potash fertilizer and building material products from white alkali-making mud | |
| CN106811801A (en) | A kind of preparation method of modified gypsum whisker | |
| CN102002366A (en) | Salinized soil curing agent prepared from industrial waste slag | |
| CN101468900A (en) | Method for formulating masonry mortar and surface mortar for steam aerated concrete | |
| CN110372273A (en) | Plant unboiled water soil restoration of the ecosystem substrate and preparation method thereof | |
| CN112174625B (en) | Environment-friendly dredged sludge modifier and preparation method thereof | |
| CN107384424A (en) | A kind of alkaline soil improver | |
| CN105087012A (en) | Saline-alkali soil regulator and processing process and application thereof | |
| CN112429982A (en) | Cementing material and mortar material based on wet-based alkaline residue-wet-based carbide slag and preparation method thereof | |
| CN104176963A (en) | Phosphorus gypsum cement retarder | |
| CN106903132B (en) | A kind of method of cationic heavy metal contaminants in stable environment medium | |
| CN112919972A (en) | Alkaline cadmium contaminated soil remediation fertilizer and preparation method thereof | |
| CN110463563A (en) | It is a kind of to use the modified montmorillonite used mixture soil modification method to industrial solid castoff and sludge | |
| Xiang et al. | Synergistic removal of phosphorus and fluorine impurities in phosphogypsum by enzyme-induced modified microbially induced carbonate precipitation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |