CN106190152A - The preparation of attapulgite saline and alkaline barrier material and salt-soda soil through engineering approaches in situ is administered and restorative procedure - Google Patents
The preparation of attapulgite saline and alkaline barrier material and salt-soda soil through engineering approaches in situ is administered and restorative procedure Download PDFInfo
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- CN106190152A CN106190152A CN201610553615.6A CN201610553615A CN106190152A CN 106190152 A CN106190152 A CN 106190152A CN 201610553615 A CN201610553615 A CN 201610553615A CN 106190152 A CN106190152 A CN 106190152A
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- attapulgite
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- 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
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- 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
- C09K2105/00—Erosion prevention
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- 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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention discloses a kind of saline and alkaline barrier material of attapulgite and salt-soda soil through engineering approaches in situ is administered and restorative procedure, the preparation method of the most saline and alkaline barrier material comprises the following steps: (1) uses nonmetallic ore to purify disintegrating apparatus, and attapulgite is ground into the microgranule of granularity >=200 mesh；(2) in attapulgite, add weight percent to be the fiber of 0.3% ~ 1.5% and mix；(3) by above-mentioned mixing material in solid: ratio liquid=1:(1 2.5), add water or vegetable oil is thoroughly mixed, soak 24h；(4) above-mentioned soaked material is carried out machinery to beat, extrude, until can see that pug section is shinny after streaking with cutter.The present invention utilizes the architectural characteristic that attapulgite has, it is prepared as the ecological of permeable watertight and intercepts pug, it is layed in salt-soda soil deep layer, cut off soil alkaline migrating channels, intercept the saline and alkaline generation causing Pedotransfer function by means of capillarity, it is achieved the permanent of soil alkaline is administered and repaired, with low cost, workable, be suitable to popularization and application.
Description
Technical field
The invention belongs to soil remediation and recovery technique field, relate to barrier material and reparation side that a kind of salt-soda soil is repaired
Method, refers specifically to the preparation of a kind of attapulgite saline and alkaline barrier material and the salt-soda soil through engineering approaches improvement in situ utilizing this material to carry out
With restorative procedure.
Background technology
Saline-alkali soil is various salinization soil, solonchak and alkali soil, the general designation of alkaline earth.These soil are because of containing many solubilities
Salt, therefore most of crops can be produced harm in various degree, also above ground structure can be produced saline alkali damage.Existing
Alkaline land improving measure mainly has: with hydraulic pressure salt, draining salt discharge, warp pressure salt, tillage control measure and chemical modifying etc., these methods
In a short time saline and alkaline improvement is had more significantly effect.But As time goes on, solubility salt in soil body deep layer is logical
Cross capillarity, again accumulate at soil surface, cause Pedotransfer function.Therefore, how considering cost and
Repairing performance, furthers investigate and designs the salt-soda soil made new advances and repair and administering method, to cut off soil capillary phenomenon, intercept salt
Move on alkali and cause Secondary Saline, be that the salinization of soil is administered and effective new way of reparation.
Summary of the invention
For above-mentioned technical problem, it is an object of the invention to disclose a kind of permeable watertight salt based on attapulgite
The preparation method of alkali barrier material；
It is another object of the present invention to open one utilize upper obstruct to state material to carry out salt-soda soil through engineering approaches in situ and administer and repair
Method, to realize low cost and the permanent reparation in salt-soda soil and improvement, can effectively intercept because capillarity causes soil
The generation of Sal alkalization.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The preparation method of the saline and alkaline barrier material of a kind of attapulgite, specifically includes following steps:
(1) use nonmetallic ore to purify disintegrating apparatus, attapulgite is ground into the microgranule of granularity >=200 mesh；
(2) in attapulgite, add percentage by weight to be the fiber of 0.3% ~ 1.5% and mix；
(3) by above-mentioned mixing material in solid: ratio liquid=1:(1-2.5), add water or vegetable oil is thoroughly mixed, leaching
Bubble 24h；
(4) above-mentioned soaked material is carried out machinery repeatedly beat or extrude 10 ~ 20min, make obstruct pug.
Preferably, in above-mentioned steps (2), cotton-wool selected by described fiber.
A kind of salt-soda soil through engineering approaches in situ is administered and restorative procedure, comprises the following steps:
The first step: the preparation of the saline and alkaline barrier material of attapulgite permeable watertight；
Second step: alkaline land soil excavates；
3rd step: the laying of the saline and alkaline barrier material of attapulgite permeable watertight；
4th step: excavation soil backfill.
Preferably, in step 2, salt-soda soil uses excavation machinery excavation, and furrow cutting depth is 50 cm ~ 70cm.
Preferably, in step 3, the laying of the described saline and alkaline barrier material of attapulgite permeable watertight, specifically include following
Step:
(1) the attapulgite permeable watertight saline and alkaline obstruct pug that will prepare, uniform spreading is located in the furrow aspect of excavation, spreads
If THICKNESS CONTROL is between 2 cm ~ 5cm；
(2) barrier material that will lay, with flattening, cal rolling is smooth.
Preferably, in step 4, the upper layer of soil of excavation is uniformly backfilled to spacer material layer top, rear smooth.
Preferably, described improvement and restorative procedure can be additionally used in the obstruct of heavy metal pollution of soil deep layer or refuse landfill
Sealing coat.
The invention has the beneficial effects as follows:
1, the architectural characteristic utilizing attapulgite to have, is prepared into the ecological of permeable watertight and intercepts pug, be layed in salt
Alkali ground deep layer, has cut off soil alkaline migrating channels, intercepts and saline and alkaline rise to earth's surface accumulation by means of capillarity and cause soil time
The generation of Sal alkalization, thus realize the permanent of soil alkaline and administer and repair；
2, attapulgite saline and alkaline obstruct raw material is natural ecological material, and soil will not cause secondary pollution, high-efficiency environment friendly；
3, the involved in the present invention restorative procedure utilizing the saline and alkaline barrier material of attapulgite to carry out salt-soda soil, it is with low cost,
Simple to operate, convenient, workable, can be suitably used for most salinized soil and administer and repair, and environmental conservation neck
Territory, has preferable market value and economic benefit, is suitable to popularization and application.
Accompanying drawing explanation
Fig. 1 is that salt-soda soil of the present invention through engineering approaches in situ is administered and the schematic diagram of underground spacer material layer in reparation.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention and effect thereof are further elaborated.
The preparation method of the saline and alkaline barrier material of a kind of attapulgite, specifically includes following steps:
(1) use nonmetallic ore to purify disintegrating apparatus, attapulgite is ground into the microgranule of granularity >=200 mesh；
(2) adding percentage by weight in attapulgite to be the fiber of 0.3% ~ 1.5% and mix, fiber can be selected for the plants such as cotton-wool
Fiber；
(3) by above-mentioned mixing material in solid: ratio liquid=1:(1-2.5), add water or vegetable oil is thoroughly mixed, leaching
Bubble 24h；
(4) above-mentioned soaked material is carried out machinery repeatedly beat or extrude 10 ~ 20min, make obstruct pug；Streak with cutter
If pug section can see that pug section is shinny, then pug completes.
A kind of salt-soda soil through engineering approaches in situ is administered and restorative procedure, comprises the following steps:
The first step: the preparation of the saline and alkaline barrier material of attapulgite permeable watertight；
Second step: alkaline land soil excavates, uses excavation machinery excavation, and furrow cutting depth controls between 50 cm ~ 70cm；
3rd step: the laying of the saline and alkaline barrier material of attapulgite permeable watertight；Specifically include following steps:
(1) the attapulgite permeable watertight saline and alkaline obstruct pug that will prepare, uniform spreading is located in the furrow aspect of excavation, spreads
If THICKNESS CONTROL is between 2 cm ~ 5cm；(2) barrier material that will lay, with flattening, cal rolling is smooth；Usual saline and alkaline resistance
Barrier material layer is laid on below soil horizon, more than underground buffer layer；As it is shown in figure 1, more than horizon be crop-planting layer, Horizon
About 70cm below line is soil horizon, lays the saline and alkaline spacer material layer of about 2 cm, can reach good below soil horizon
Saline and alkaline iris action, reach salt-soda soil and forever administer the purpose of reparation；
4th step: excavation soil backfill；The upper layer of soil of excavation is uniformly backfilled to spacer material layer top, rear smooth.
Obstruct raw material involved in the present invention is natural ecological material, non-environmental-pollution；Because of attapulgite have layer,
Chain, fibrous crystal structure and the microtexture of nanoscale hole passage, this material of natural endowment tool adsorptivity, mass transfer performances, slow release
Many good characteristics such as property, rheological characteristic, ion exchangeable.The present invention passes through pugging technique, is prepared as attapulgite breathing freely not
Permeable ecological obstruct pug, is layed in salt-soda soil deep layer, has cut off soil alkaline migrating channels, intercepts saline and alkaline by means of capillary tube work
Accumulate with rising to earth's surface, thus realize the permanent of soil alkaline and administer and repair.Technology involved in the present invention is suitable for
In strand, the salinized soil of semi-moist, semiarid, arid biogeographic zone and Ban Mo border and unconcerned border region administer and repair, also may be used
It is applicable to the field of environment protection such as the obstruct of heavy metal pollution of soil deep layer or garbage loading embeading field isolating layer.
Above example is only exemplary, can't limit to the present invention, it should be pointed out that for those skilled in the art
For, under technology provided by the present invention is enlightened, other equivalent modifications made and improvement, it is regarded as the guarantor of the present invention
Protect scope.
Claims (7)
1. the preparation method of the saline and alkaline barrier material of attapulgite, it is characterised in that specifically include following steps:
Use nonmetallic ore to purify disintegrating apparatus, attapulgite is ground into the microgranule of granularity >=200 mesh；
In attapulgite, add percentage by weight be the fiber of 0.3% ~ 1.5% and mix；
By above-mentioned mixing material in solid: ratio liquid=1:(1-2.5), add water or vegetable oil is thoroughly mixed, soak
24h；
Above-mentioned soaked material is carried out machinery repeatedly beat or extrude 10 ~ 20min, make obstruct pug.
The preparation method of the saline and alkaline barrier material of a kind of attapulgite the most according to claim 1, it is characterised in that: above-mentioned step
Suddenly, in (2), cotton-wool selected by described fiber.
3. the saline and alkaline barrier material utilized described in claim 1 carries out the side that through engineering approaches is administered and repaired in situ, salt-soda soil
Method, it is characterised in that comprise the following steps:
The first step: the preparation of the saline and alkaline barrier material of attapulgite permeable watertight；
Second step: alkaline land soil excavates；
3rd step: the laying of the saline and alkaline barrier material of attapulgite permeable watertight；
4th step: excavation soil backfill.
A kind of salt-soda soil the most according to claim 3 through engineering approaches in situ is administered and restorative procedure, it is characterised in that: step 2
In, salt-soda soil uses excavation machinery excavation, and furrow cutting depth is 50 cm ~ 70cm.
A kind of salt-soda soil the most according to claim 3 through engineering approaches in situ is administered and restorative procedure, it is characterised in that: step 3
In, the laying of the described saline and alkaline barrier material of attapulgite permeable watertight, specifically include following steps:
(1) the attapulgite permeable watertight saline and alkaline obstruct pug that will prepare, uniform spreading is located in the furrow aspect of excavation, spreads
If THICKNESS CONTROL is between 2 cm ~ 5cm；
(2) barrier material that will lay, with flattening, cal rolling is smooth.
A kind of salt-soda soil the most according to claim 3 through engineering approaches in situ is administered and restorative procedure, it is characterised in that: step 4
In, the upper layer of soil of excavation is uniformly backfilled to spacer material layer top, rear smooth.
7. administer and restorative procedure according to the arbitrary described a kind of salt-soda soil of claim 3-6 through engineering approaches in situ, it is characterised in that:
Described improvement and restorative procedure can be additionally used in heavy metal pollution of soil deep layer and intercept or garbage loading embeading field isolating layer.
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| CN201610553615.6A CN106190152A (en) | 2016-07-14 | 2016-07-14 | The preparation of attapulgite saline and alkaline barrier material and salt-soda soil through engineering approaches in situ is administered and restorative procedure |
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Cited By (6)
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| CN107983768A (en) * | 2017-12-20 | 2018-05-04 | 甘肃省农业科学院土壤肥料与节水农业研究所 | A kind of heavy-metal contaminated soil mixing restorative procedure |
| CN108031704A (en) * | 2017-12-20 | 2018-05-15 | 甘肃省农业科学院土壤肥料与节水农业研究所 | A kind of heavy-metal contaminated soil repairs implantation methods |
| CN108031710A (en) * | 2017-12-20 | 2018-05-15 | 甘肃省农业科学院土壤肥料与节水农业研究所 | A kind of heavy-metal contaminated soil repairing method of microorganism |
| CN111139083A (en) * | 2020-01-19 | 2020-05-12 | 西北师范大学 | Organic-inorganic composite saline-alkali barrier material and preparation method thereof |
| CN112048311A (en) * | 2020-09-30 | 2020-12-08 | 曾敦华 | Salt return blocking agent for desert and saline-alkali soil and preparation method and application thereof |
| CN114190130A (en) * | 2021-12-15 | 2022-03-18 | 中国科学院武汉岩土力学研究所 | Artificial soil for treating saline-alkali soil and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107983768A (en) * | 2017-12-20 | 2018-05-04 | 甘肃省农业科学院土壤肥料与节水农业研究所 | A kind of heavy-metal contaminated soil mixing restorative procedure |
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| CN111139083A (en) * | 2020-01-19 | 2020-05-12 | 西北师范大学 | Organic-inorganic composite saline-alkali barrier material and preparation method thereof |
| CN112048311A (en) * | 2020-09-30 | 2020-12-08 | 曾敦华 | Salt return blocking agent for desert and saline-alkali soil and preparation method and application thereof |
| CN114190130A (en) * | 2021-12-15 | 2022-03-18 | 中国科学院武汉岩土力学研究所 | Artificial soil for treating saline-alkali soil and use method thereof |
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Application publication date: 20161207 |