CN112592720A - Method for preparing composite curing agent by taking fly ash as raw material and application of composite curing agent in repairing mining area soil - Google Patents
Method for preparing composite curing agent by taking fly ash as raw material and application of composite curing agent in repairing mining area soil Download PDFInfo
- Publication number
- CN112592720A CN112592720A CN202011480882.8A CN202011480882A CN112592720A CN 112592720 A CN112592720 A CN 112592720A CN 202011480882 A CN202011480882 A CN 202011480882A CN 112592720 A CN112592720 A CN 112592720A
- Authority
- CN
- China
- Prior art keywords
- soil
- curing agent
- mining area
- heavy metals
- zeolite molecular
- 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.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 88
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 54
- 238000005065 mining Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000010881 fly ash Substances 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000002994 raw material Substances 0.000 title claims abstract description 21
- 239000002808 molecular sieve Substances 0.000 claims abstract description 83
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 83
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 82
- 239000010457 zeolite Substances 0.000 claims abstract description 82
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 61
- 230000000694 effects Effects 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- 238000013329 compounding Methods 0.000 claims abstract description 13
- 238000001179 sorption measurement Methods 0.000 claims description 11
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052793 cadmium Inorganic materials 0.000 claims description 5
- 229910052745 lead Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 238000002715 modification method Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000005067 remediation Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for preparing a composite curing agent for restoring heavy metals in mining area soil by taking fly ash as a raw material, which comprises the following steps: step 1, preparing different types of zeolite molecular sieves by taking fly ash as a raw material; step 2, determining occurrence states of heavy metals in the soil of the mining area to be repaired; step 3, determining the repairing effect of the zeolite molecular sieves of different types prepared in the step 1 on the heavy metals in the mining area soil to be repaired; and 4, compounding different types of zeolite molecular sieves according to the repairing effect obtained in the step 3 to obtain the compound curing agent. The invention realizes the harmless and resource utilization of the fly ash and reduces the land occupation of the fly ash landfill while solving the ecological problem caused by heavy metal in the soil of the mining area.
Description
Technical Field
The invention relates to the technical field of soil heavy metal pollution remediation, in particular to a method for preparing a composite curing agent by taking fly ash as a raw material and application of the composite curing agent in remediation of mining area soil.
Background
With the development of national economy, the industry is highly developed, the demand for mineral resources is increased, and the heavy metal pollution of the soil around a mining area is serious. Heavy metal is a persistent potential toxic pollutant, and the continuous mining of mines and the random stacking of slag are performed by human activities, so that the soil around a mining area causes heavy metal pollution. Heavy metals are difficult to biodegrade after entering the soil, and long-term accumulation can cause the reduction of the biological activity of the soil, so that the function of a soil ecosystem is weakened or even lost, the bearing capacity of the soil is reduced, and the activity of animals and plants on the earth surface is influenced. Moreover, the heavy metals in the soil have the characteristics of food chain transmission, biological enrichment and biological amplification, and the process is a long-term and slow accumulation process. Therefore, many scholars have also made a lot of research work on the problem of remediation of heavy metals in mine soils. The solidification/stabilization technology has the advantages of low cost, short restoration time, capability of treating various complex heavy metal pollutions, easiness in operation and the like, so that the solidification/stabilization technology becomes a mature, economic and effective restoration and treatment technology for the heavy metal polluted soil.
The fly ash appears in waste discharged by a thermal power plant, is one of byproducts of coal-fired power generation, and along with the increasing quantity of the fly ash, the stacking site thereof can cause great threat to human living space, and the reasonable resource application thereof is an effective method for solving the pollution. The fly ash contains a large amount of silicon and aluminum substances, is similar to zeolite in composition, and is a technology with economic and environmental benefits for repairing polluted soil in mining areas by using the fly ash as a raw material to prepare zeolite molecular sieves of different types as curing agents. However, the curing agent obtained by the current research generally has low passivation stability and single action effect, and cannot achieve a good curing effect on the soil to be repaired in different areas, so that the utilization rate of the curing agent is low.
Disclosure of Invention
The invention aims to provide a method for preparing a composite curing agent by taking fly ash as a raw material and application of the composite curing agent in repairing mining area soil, so as to solve the ecological problem caused by heavy metals in the mining area soil and realize harmless and resource utilization of the fly ash.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for preparing a composite curing agent for repairing heavy metals in mining area soil by taking fly ash as a raw material comprises the following steps:
step 1, preparing different types of zeolite molecular sieves by taking fly ash as a raw material;
step 2, determining occurrence states of heavy metals in the soil of the mining area to be repaired;
step 3, determining the repairing effect of the zeolite molecular sieves of different types prepared in the step 1 on the heavy metals in the mining area soil to be repaired;
and 4, compounding different types of zeolite molecular sieves according to the repairing effect obtained in the step 3 to obtain the compound curing agent.
In the step 1, the method for preparing the zeolite molecular sieve is a hydrothermal synthesis method, a two-step hydrothermal synthesis method, an alkali fusion hydrothermal method or an acid modification method.
In step 1, the different types of zeolite molecular sieves include: 4A Zeolite molecular Sieve, A1Zeolite type molecular sieves, A2Zeolite type molecular sieve, X1Zeolite type molecular sieve, X2Zeolite type molecular sieve, P type zeolite molecular sieve.
In the step 2, the content of heavy metals in the mining area soil to be restored and the form of the contained heavy metals in the soil are determined.
In the step 3, the zeolite molecular sieves of different types prepared in the step 1 are respectively and independently acted on the soil of the mining area to be repaired, so that the repairing effect of the zeolite molecular sieves of different types on one or more heavy metals in the soil is obtained.
In the step 4, according to the data measured in the step 3, the proportion of each zeolite molecular sieve required for restoring the soil of the mining area is calculated by the following compounding method, and the composite curing agent is obtained by mixing the zeolite molecular sieves in proportion;
the compounding method comprises the following steps:
excessive weight in soil to be restoredMetal: n is1、n2、n3…niIt corresponds to zeolite molecular sieve with best adsorption effect respectively: n is a radical of1、N2、N3…NiThen, then
Wherein,
for adsorbing n in soil1Required N1The minimum dosage of (2), g/kg;
by the same way, obtain
If the amount of the composite curing agent added is fNIn total, the adsorption capacity of the curing agent is excessive, thereby introducing an excessive factor
The proportion of the composite curing agent is calculated by the excess coefficient:
wherein,
is an excess systemNumber, dimension 1; by the same way, obtain
Finding the minimum excess coefficient
The adding amount of the different zeolite molecular sieves is as follows:
the application of the composite curing agent in repairing heavy metals in the mining area soil is as follows: and uniformly spreading the composite curing agent on the soil of the mining area to be repaired, ploughing, uniformly mixing, stacking and aging for 15-25d, and finishing the repairing process. Wherein the dosage of the compound curing agent is 80-200 kg/mu. The heavy metal is one or more of Cd, Pb, Hg, Cu, Cr and Ni.
Has the advantages that: according to the method, the fly ash is used as a main raw material, various curing agents with different properties are prepared through targeted modification treatment, and the various curing agents are compounded and used for curing and repairing heavy metals in soil based on occurrence characteristics of the heavy metals in the soil.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention discloses a method for preparing a composite curing agent for repairing heavy metals in mining area soil by taking fly ash as a raw material, which comprises the following steps:
step 1, taking fly ash as a raw material, and preparing different types of zeolite molecular sieves by a hydrothermal synthesis method, a two-step hydrothermal synthesis method, an alkali fusion hydrothermal method or an acid modification method in the prior art; wherein the different types of zeolitic molecular sieves comprise:4A Zeolite molecular Sieve, A1Zeolite type molecular sieves, A2Zeolite type molecular sieve, X1Zeolite type molecular sieve, X2Zeolite type molecular sieve, P type zeolite molecular sieve.
And 2, determining the content of the heavy metal in the soil of the mining area to be repaired and the form of the contained heavy metal in the soil.
And 3, respectively and independently acting the zeolite molecular sieves of different types prepared in the step 1 on the soil of the mining area to be repaired to obtain the repairing effect of the zeolite molecular sieves of different types on one or more heavy metals in the soil.
Step 4, calculating the proportion of each zeolite molecular sieve required for restoring the soil of the mining area according to the data measured in the step 3 by the following compounding method, and mixing the zeolite molecular sieves in proportion to obtain a compound curing agent;
the compounding method comprises the following steps:
and (3) exceeding heavy metals in the soil to be repaired: n is1、n2、n3…niIt corresponds to zeolite molecular sieve with best adsorption effect respectively: n is a radical of1、N2、N3…NiThen, then
Wherein,
for adsorbing n in soil1Required N1The minimum dosage of (2), g/kg;
by the same way, obtain
If the amount of the composite curing agent added is fNIn total, the adsorption capacity of the curing agent is excessive, thereby introducing an excessive factor
The proportion of the composite curing agent is calculated by the excess coefficient:
wherein,
is an excess factor, dimension 1; by the same way, obtain
Finding the minimum excess coefficient
The adding amount of the different zeolite molecular sieves is as follows:
the present invention will be further described with reference to the following examples.
Example 1
Preparing different types of zeolite molecular sieves by taking fly ash as a raw material; determining occurrence states of heavy metals in the soil of the mining area to be repaired; determining the repairing effect of different types of adsorbing materials on heavy metals in the soil of the mining area; and compounding the measured data to prepare the compound curing agent. The remediation land is soil in a mining area of Xuzhou.
Of different typesThe zeolite molecular sieve comprises: 4A Zeolite molecular Sieve, A1Zeolite type molecular sieves, A2Zeolite type molecular sieve, X type zeolite molecular sieve, P type zeolite molecular sieve.
The content of heavy metals in the mining area soil to be repaired is determined and is shown in table 1;
table 1: heavy metal content of mining area soil to be restored
The heavy metal elements Cd, Hg, Cu and Pb, wherein the elements of the heavy metal elements Cd, Hg, Cu and Pb occupy 59.4-78.6% of the element content in the forms of acid-extractable state, reducible state and oxidizable state; the ratio of the Cr to the Ni elements in the residual state is relatively large.
The determination of the repairing effect of the zeolite molecular sieves of different types on the heavy metals in the mining area soil is specifically as follows: the prepared zeolite molecular sieves of different types are respectively acted on the soil of the mining area to be repaired, and the repairing effect of different adsorbing materials on one or more heavy metals in the soil is shown in table 2.
Table 2: result of soil in mining area to be restored under action of different adsorption materials
The data obtained from the two steps are used for calculating the proportion of the required single zeolite molecular sieve by the compounding method provided by the invention, wherein: 4A zeolite molecular sieve 8%, A1Zeolite type molecular sieve 23%, A2Zeolite molecular sieve 17% and X1Zeolite molecular sieve 8%, X226% of type zeolite molecular sieve and 18% of P type zeolite molecular sieve; mixing the components in proportion to obtain the required compound curing agent.
And uniformly spreading the compound curing agent on the polluted soil according to the proportion of 120 kg/mu, ploughing to uniformly mix the compound curing agent and the polluted soil, stacking and aging for 20 days, and finishing the repairing process. The content of heavy metals in the soil after remediation was determined and is shown in table 3.
Table 3: mining area soil heavy metal content after composite curing agent restoration
Example 2
Preparing different types of zeolite molecular sieves by taking fly ash as a raw material; determining occurrence states of heavy metals in the soil of the mining area to be repaired; determining the repairing effect of different types of zeolite molecular sieves on heavy metals in the soil of the mining area; and compounding the measured data to prepare the compound curing agent. The remediation land is soil in a mining area of Xuzhou.
Different types of zeolitic molecular sieves include: 4A Zeolite molecular Sieve, A1Zeolite type molecular sieves, A2Zeolite type molecular sieve, X type zeolite molecular sieve, P type zeolite molecular sieve.
The measured heavy metal content in the mining area soil to be restored is shown in table 4;
table 4: heavy metal content of mining area soil to be restored
The heavy metal elements Hg, Cu, Cd and Cr, the content of the elements is 56.3-79.1% of the content of the elements in the form of acid-extractable state, reducible state and oxidizable state; the residue content ratio of Pb and Ni elements is relatively large.
The prepared zeolite molecular sieves of different types are respectively acted on the soil of the mining area to be repaired, and the repairing effect of different adsorbing materials on one or more heavy metals in the soil is shown in table 5.
Table 5: result of soil in mining area to be restored under action of different adsorption materials
The proportion of the required single adsorbing material is calculated by the compounding method provided by the invention according to the data obtained in the two steps, wherein: 18% of 4A zeolite molecular sieve and A1Zeolite molecular sieve 26% or A2Zeolite molecular sieve 10%, X1Type zeolite molecular sieve 9%, X224% of type zeolite molecular sieve and 13% of P type zeolite molecular sieve; mixing the components in proportion to obtain the required compound curing agent.
And uniformly spreading the compound curing agent on the polluted soil according to the proportion of 150 kg/mu, ploughing to uniformly mix the compound curing agent and the polluted soil, stacking and aging for 18 days, and finishing the repairing process. The content of heavy metals in the soil after remediation was determined and is shown in table 6.
Table 6: mining area soil heavy metal content after composite curing agent restoration
The above-described embodiments are only some of the preferred embodiments of the present invention, and it should be understood by those skilled in the art that the present invention is not limited by the above-described embodiments, and the above-described embodiments and the description are only for illustrating the principle of the present invention, and the technical solution of the present invention can be modified or substituted equally without departing from the spirit and scope of the present invention, and these modifications and equivalents should be regarded as the protection scope of the present invention.
Claims (10)
1. A method for preparing a composite curing agent for restoring heavy metals in mining area soil by taking fly ash as a raw material is characterized by comprising the following steps: the method comprises the following steps:
step 1, preparing different types of zeolite molecular sieves by taking fly ash as a raw material;
step 2, determining occurrence states of heavy metals in the soil of the mining area to be repaired;
step 3, determining the repairing effect of the zeolite molecular sieves of different types prepared in the step 1 on the heavy metals in the mining area soil to be repaired;
and 4, compounding different types of zeolite molecular sieves according to the repairing effect obtained in the step 3 to obtain the compound curing agent.
2. The method for repairing heavy metals in mining area soil by using fly ash as a raw material and preparing a compound curing agent according to claim 1, which is characterized in that: in the step 1, the method for preparing the zeolite molecular sieve is a hydrothermal synthesis method, a two-step hydrothermal synthesis method, an alkali fusion hydrothermal method or an acid modification method.
3. The method for repairing heavy metals in mining area soil by using fly ash as a raw material and preparing a compound curing agent according to claim 1, which is characterized in that: in step 1, the different types of zeolite molecular sieves include: 4A Zeolite molecular Sieve, A1Zeolite type molecular sieves, A2Zeolite type molecular sieve, X1Zeolite type molecular sieve, X2Zeolite type molecular sieve, P type zeolite molecular sieve.
4. The method for repairing heavy metals in mining area soil by using fly ash as a raw material and preparing a compound curing agent according to claim 1, which is characterized in that: in the step 2, the content of heavy metals in the mining area soil to be restored and the form of the contained heavy metals in the soil are determined.
5. The method for repairing heavy metals in mining area soil by using fly ash as a raw material and preparing a compound curing agent according to claim 1, which is characterized in that: in the step 3, the zeolite molecular sieves of different types prepared in the step 1 are respectively and independently acted on the soil of the mining area to be repaired, so that the repairing effect of the zeolite molecular sieves of different types on one or more heavy metals in the soil is obtained.
6. The method for repairing heavy metals in mining area soil by using fly ash as a raw material and preparing a compound curing agent according to claim 1, which is characterized in that: in the step 4, according to the data measured in the step 3, the proportion of each zeolite molecular sieve required for restoring the soil of the mining area is calculated by the following compounding method, and the composite curing agent is obtained by mixing the zeolite molecular sieves in proportion;
the compounding method comprises the following steps:
and (3) exceeding heavy metals in the soil to be repaired: n is1、n2、n3…niIt corresponds to zeolite molecular sieve with best adsorption effect respectively: n is a radical of1、N2、N3…NiThen, then
Wherein,
for adsorbing n in soil1Required N1The minimum dosage of (2), g/kg;
by the same way, obtain
If the amount of the composite curing agent added is fNIn total, the adsorption capacity of the curing agent is excessive, thereby introducing an excessive factor
The proportion of the composite curing agent is calculated by the excess coefficient:
wherein,
is an excess factor, dimension 1; by the same way, obtain
Finding the minimum excess coefficient
The adding amount of the different zeolite molecular sieves is as follows:
7. a composite type curing agent prepared according to the method of any one of claims 1 to 6.
8. The application of the compound curing agent of claim 7 in repairing heavy metals in mine soil.
9. Use according to claim 7, characterized in that: and uniformly spreading the composite curing agent on the soil of the mining area to be repaired, ploughing, uniformly mixing, stacking and aging for 15-25d, and finishing the repairing process.
10. Use according to claim 8, characterized in that: the dosage of the compound curing agent is 80-200 kg/mu, and the heavy metal is one or more of Cd, Pb, Hg, Cu, Cr and Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480882.8A CN112592720A (en) | 2020-12-15 | 2020-12-15 | Method for preparing composite curing agent by taking fly ash as raw material and application of composite curing agent in repairing mining area soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480882.8A CN112592720A (en) | 2020-12-15 | 2020-12-15 | Method for preparing composite curing agent by taking fly ash as raw material and application of composite curing agent in repairing mining area soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112592720A true CN112592720A (en) | 2021-04-02 |
Family
ID=75196164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011480882.8A Pending CN112592720A (en) | 2020-12-15 | 2020-12-15 | Method for preparing composite curing agent by taking fly ash as raw material and application of composite curing agent in repairing mining area soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112592720A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01138289A (en) * | 1987-11-24 | 1989-05-31 | Gojiyou Bussan Kk | Soil conditioner |
| JP2003096449A (en) * | 2001-09-25 | 2003-04-03 | Harumi Sangyo Kk | Soil improving method for farm |
| CN1420845A (en) * | 2000-03-17 | 2003-05-28 | Pq控股公司 | Process for manufacture of zeolites and zeolite mixtures having enhanced cation exchange properties, products produced thereby, and detergent compositions formulated therewith |
| JP2005319396A (en) * | 2004-05-10 | 2005-11-17 | National Institute Of Advanced Industrial & Technology | Insolubilization method for cadmium in soil |
| CN102491363A (en) * | 2011-11-28 | 2012-06-13 | 中国环境科学研究院 | Device and method for synthesizing zeolite molecular sieves by solid waste materials |
| CN104379506A (en) * | 2012-04-04 | 2015-02-25 | 国立大学法人爱媛大学 | Zeolite and manufacturing method thereof, and method for selective and specific capture of cesium |
| CN104402019A (en) * | 2014-11-19 | 2015-03-11 | 沈阳大学 | Solid-phase preparation method of fly ash zeolite molecular sieve |
| CN104560046A (en) * | 2015-01-27 | 2015-04-29 | 上海绿强新材料有限公司 | Contaminated soil passivator and preparation method and application thereof |
| CN104741076A (en) * | 2015-04-03 | 2015-07-01 | 中国地质科学院水文地质环境地质研究所 | Magnetic zeolite, and preparation method and application thereof |
| JP2016010768A (en) * | 2014-06-30 | 2016-01-21 | 株式会社安藤・間 | Method for purifying contaminated soil |
| CN106085444A (en) * | 2016-06-06 | 2016-11-09 | 佛山市聚成生化技术研发有限公司 | The preparation method of a kind of soil improvement chelating agen reducing Lead In Soil content and prepared soil improvement chelating agen |
| CN106914214A (en) * | 2017-03-15 | 2017-07-04 | 中国科学院上海高等研究院 | For the gas cleaning adsorbent and reclamation of salinep-alkali soil method of the reclamation of salinep-alkali soil |
| CN107382167A (en) * | 2017-08-01 | 2017-11-24 | 大连金海岸海洋经济发展有限公司 | The method and artificial marine habitat of ecological artificial marine habitat are manufactured using flyash geo-polymer |
| CN108380173A (en) * | 2018-02-26 | 2018-08-10 | 北京林业大学 | A kind of synthetic zeolite from flyash and its preparation method and application |
| CN111729472A (en) * | 2020-07-31 | 2020-10-02 | 中国矿业大学(北京) | Purification system for treating volatile organic compounds |
-
2020
- 2020-12-15 CN CN202011480882.8A patent/CN112592720A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01138289A (en) * | 1987-11-24 | 1989-05-31 | Gojiyou Bussan Kk | Soil conditioner |
| CN1420845A (en) * | 2000-03-17 | 2003-05-28 | Pq控股公司 | Process for manufacture of zeolites and zeolite mixtures having enhanced cation exchange properties, products produced thereby, and detergent compositions formulated therewith |
| JP2003096449A (en) * | 2001-09-25 | 2003-04-03 | Harumi Sangyo Kk | Soil improving method for farm |
| JP2005319396A (en) * | 2004-05-10 | 2005-11-17 | National Institute Of Advanced Industrial & Technology | Insolubilization method for cadmium in soil |
| CN102491363A (en) * | 2011-11-28 | 2012-06-13 | 中国环境科学研究院 | Device and method for synthesizing zeolite molecular sieves by solid waste materials |
| CN104379506A (en) * | 2012-04-04 | 2015-02-25 | 国立大学法人爱媛大学 | Zeolite and manufacturing method thereof, and method for selective and specific capture of cesium |
| JP2016010768A (en) * | 2014-06-30 | 2016-01-21 | 株式会社安藤・間 | Method for purifying contaminated soil |
| CN104402019A (en) * | 2014-11-19 | 2015-03-11 | 沈阳大学 | Solid-phase preparation method of fly ash zeolite molecular sieve |
| CN104560046A (en) * | 2015-01-27 | 2015-04-29 | 上海绿强新材料有限公司 | Contaminated soil passivator and preparation method and application thereof |
| CN104741076A (en) * | 2015-04-03 | 2015-07-01 | 中国地质科学院水文地质环境地质研究所 | Magnetic zeolite, and preparation method and application thereof |
| CN106085444A (en) * | 2016-06-06 | 2016-11-09 | 佛山市聚成生化技术研发有限公司 | The preparation method of a kind of soil improvement chelating agen reducing Lead In Soil content and prepared soil improvement chelating agen |
| CN106914214A (en) * | 2017-03-15 | 2017-07-04 | 中国科学院上海高等研究院 | For the gas cleaning adsorbent and reclamation of salinep-alkali soil method of the reclamation of salinep-alkali soil |
| CN107382167A (en) * | 2017-08-01 | 2017-11-24 | 大连金海岸海洋经济发展有限公司 | The method and artificial marine habitat of ecological artificial marine habitat are manufactured using flyash geo-polymer |
| CN108380173A (en) * | 2018-02-26 | 2018-08-10 | 北京林业大学 | A kind of synthetic zeolite from flyash and its preparation method and application |
| CN111729472A (en) * | 2020-07-31 | 2020-10-02 | 中国矿业大学(北京) | Purification system for treating volatile organic compounds |
Non-Patent Citations (5)
| Title |
|---|
| VINAY KUMAR JHA ET AL.: "Zeolite formation from coal fly ash and heavy metal ion removal characteristics of thus-obtained Zeolite X in multi-metal systems", 《JOURNAL OF ENVIRONMENTAL MANAGEMENT》 * |
| 周琳琳: "A/X复合沸石的合成、表征及性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 晋晓彤等: "粉煤灰合成分子筛的研究进展", 《环境化学》 * |
| 陈冠飞等: "粉煤灰合成MCM-41介孔分子筛及其残渣制备NaX-A型混合型沸石对重金属吸附性能的研究", 《河南省化学会2014年学术年会论文摘要集》 * |
| 黄少云等: "介微孔复合沸石分子筛对重金属离子吸附性能的实验研究", 《岩石矿物学杂质》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103436265B (en) | A kind of contaminated soil, bed mud and mud deoxidization, degradation stablizer and preparation method thereof and using method | |
| CN103881727B (en) | The stabilizing and curing agent of remediating heavy metal and toxic organic compound combined contamination soil and using method thereof | |
| KR100919620B1 (en) | The artificial soil composition and its manufacturing method that using the industrial by-product for recovering an abandoned quarry mining | |
| US10457612B1 (en) | Slag bacterial fertilizer and preparation method thereof and method for improving degraded soil | |
| CN109504398A (en) | A kind of humic acid nano zero valence iron soil Cr pollution amelioration agent and preparation method | |
| CN108130087A (en) | A kind of soil conditioner and application process for repairing cadmium-arsenic combined pollution | |
| KR101366069B1 (en) | Composition for soil stabilization, improvement, hardening, and compost fermentation promotion of contaminated sediment, and method of manufacturing the same | |
| CN109609134B (en) | Stable curing agent for arsenic-polluted soil and slag and preparation method thereof | |
| CN104492024A (en) | Fly ash treatment method for waste incineration | |
| CN104804747A (en) | Calcium-based heavy metal soil repairing agent and preparation method | |
| CN109762569B (en) | Heavy metal cadmium and arsenic composite contaminated soil remediation agent and preparation method thereof | |
| CN107418582A (en) | A kind of heavy metals immobilization stabilization agent and application method | |
| CN113860840B (en) | Roadbed material prepared from waste slurry and application thereof | |
| CN103865543A (en) | Curing agent for heavy metal contaminated soil and application method thereof | |
| CN110982535A (en) | Biomass charcoal soil heavy metal restoration agent and application method thereof | |
| CN113248093A (en) | Ecological composite bottom mud in-situ restoration agent and restoration process | |
| CN104479684A (en) | Curing agent and method for heavy metal in polluted soil | |
| CN104449748A (en) | Additive applied to polluted soil | |
| CN107649502A (en) | A kind of method of in-situ remediation soil polluted by heavy metals | |
| He et al. | The effects of flue gas desulfurization gypsum (FGD gypsum) on P fractions in a coastal plain soil | |
| CN104479686A (en) | Curing agent and method for heavy metal | |
| CN107470343B (en) | Method for treating high-concentration lead-polluted soil by using composite reagent | |
| CN104531158A (en) | Curing agent and curing method thereof | |
| CN112592720A (en) | Method for preparing composite curing agent by taking fly ash as raw material and application of composite curing agent in repairing mining area soil | |
| CN111139080A (en) | Preparation process of organic composite attapulgite-based soil heavy metal passivation material |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |