CN104861983A - Farmland soil conditioner and preparation method thereof - Google Patents
Farmland soil conditioner and preparation method thereof Download PDFInfo
- Publication number
- CN104861983A CN104861983A CN201510229828.9A CN201510229828A CN104861983A CN 104861983 A CN104861983 A CN 104861983A CN 201510229828 A CN201510229828 A CN 201510229828A CN 104861983 A CN104861983 A CN 104861983A
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- soil
- agricultural land
- sepiolite
- zeolite
- land soil
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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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
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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
- C09K2101/00—Agricultural use
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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 belongs to the technical field of agricultural environmental conservation and restoration, and specifically discloses a farmland soil conditioner and a preparation method thereof. The farmland soil conditioner is prepared by uniformly mixing treated raw materials comprising quicklime, bentonite, zeolite and sepiolite in proportion. According to the invention, the preparation method is easy and simple to operate; the farmland soil conditioner is reasonable in formulation, has functions of restoring heavy metal pollution in soil, regulating soil acidity and alkalinity and the like, enables the contents of available cadmium and lead in polluted farmland to be decreased by 24.1%-35.1% and 28.7%-44.8% respectively, also enables the contents of available cadmium and lead in rice to be decreased by 34.9%-44.7% and 32.3%-46.1% respectively, improves the soil pH by 0.20-0.31, and is applicable to a variety of farmland soils with heavy metal pollution and serious soil acidification.
Description
Technical field
The present invention relates to agricultural environment child care and recovery technique field, be specifically related to a kind of agricultural land soil amendment, also relate to a kind of preparation method of above-mentioned agricultural land soil amendment, described amendment is applicable to the various contaminated by heavy metals agricultural land soil serious with soil acidification simultaneously.
Background technology
Along with modern science and technology and economic fast development, the discharge of Industrial " three Waste ", sewage irrigation, agricultural sludge, agricultural chemicals and the unreasonable for a long time of chemical fertilizer are used, and cause farmland soil heavy metals to pollute, and become one by a difficult problem for extensive concern.Heavy metal in soil enters food chain by plant absorption, and then constitutes a serious threat to HUMAN HEALTH.According to the display of national Investigation of Soil Pollution publication, the total exceeding standard rate of China's soil is 16.1%, and wherein slightly, slightly, moderate and serious pollution point position ratio be respectively 11.2%, 2.3%, 1.5% and 1.1%.China's arable soil point position exceeding standard rate is 19.4%, and wherein slightly, slightly, moderate and serious pollution point position ratio be respectively 13.7%, 2.8%, 1.8% and 1.1%, and principal pollutant are the heavy metals such as cadmium, nickel, copper, lead.This badly influenced farmland quality, food safety and even the mankind healthy and social stable.
At present, the recovery technique of heavy-metal contaminated soil mainly comprises: (1) engineering reparation, and as soil moved in improve the original, soil removal and replacement and deep ploughing are digged, this method quantities is large, and investment cost is high, is not suitable for the improvement of pollution in wide area soil; (2) peripheral doses, as electro reclamation and electric heating reparation, to polluting the soil remediation successful heavy, area is little, but easily causing Soil structure to destroy and fertility decline, being unsuitable for the reparation of agricultural land soil; (3) biological restoration, as microorganism remediation and phytoremediation, wherein microorganism remediation technology is also confined to scientific research and laboratory level, application example is few, and the phytoremediation cycle is long, and affect farming work, therefore be difficult to big area use in farmland soil heavy metals is polluted; (4) chemical redemption, as chemical leaching, chemical passivation etc.Chemical passivation reparation is in soil, add physics, the chemical property that amendment changes soil, by the effect such as absorption, precipitation, ion-exchange, complexing of its heavy metal, changes the existence of heavy metal in soil, reduces its biological activity.Chemical passivation recovery technique is with low cost with it, reparation is quick, simple operation and other advantages comes into one's own, and is suitable for the reparation of big area heavy-metal contaminated soil.
The amendment of conventional chemical passivation recovery technique comprises basic material, phosphorated material, the mineral being rich in iron and manganese oxides and organic materials etc.But conventional amendment has respective limitation, as long-term application phosphorated material can make soil be strong basicity and bring out body eutrophication; The mineral being rich in iron and manganese oxides are relatively high due to cost, there is Fe, Mn simultaneously and poison risk to crop; Organic materials can reduce the validity of heavy metal when just applying soil, but decomposes along with organic mineralising, likely causes the heavy metal ion by adsorbing again to discharge.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is to there are provided a kind of agricultural land soil amendment.It is made up by a certain percentage of unslaked lime, wilkinite, zeolite, sepiolite four kinds of raw materials, and this amendment is by changing soil pH, increasing the approach reduction bioavailability of heavy metals such as adsorption by soil site, antagonism of ions.Various contaminated by heavy metals agricultural land soil can be widely used in, especially southern acid agricultural land soil.
Amendment of the present invention combines the advantage of various conventional amendment, is rich in multiple reparative factor, has quick and continual and steady remarkable repairing effect, and the raw material sources of amendment are extensive, and with low cost, environmental friendliness, non-secondary pollution, is easy to spread.
Another object of the present invention is the preparation method that there are provided a kind of agricultural land soil amendment, simple to operate, easy to implement the method.
In order to realize foregoing invention object, present invention employs following technical measures:
A kind of agricultural land soil amendment, it is made up of four kinds of raw materials that weight percent is following:
A kind of agricultural land soil amendment, it is made up (preferable range) of four kinds of raw materials that weight percent is following:
A kind of agricultural land soil amendment, it is made up (optimum proportioning) of four kinds of raw materials that weight percent is following:
Described unslaked lime is the powder crossing 60-140 mesh sieve after the calcining of Wingdale raw ore being pulverized;
Described wilkinite is by rear for air-dry for the raw ore of calcium base bentonite pulverizing powder crossing 60-140 mesh sieve;
Described zeolite is by rear for air-dry for the zeolite raw ore pulverizing powder crossing 60-140 mesh sieve;
Described sepiolite is by rear for air-dry for the sepiolite raw ore pulverizing powder crossing 60-140 mesh sieve;
A preparation method for agricultural land soil amendment, it comprises the steps:
A. raw material unslaked lime preparation: select Wingdale raw ore, calcining crosses 60-140 mesh sieve after pulverizing, for subsequent use.
B. raw material wilkinite preparation: select raw ore of calcium base bentonite, air-dry pulverizing is rear crosses 60-140 mesh sieve, for subsequent use.
C. raw material zeolite preparation: select zeolite raw ore, air-dry pulverizing is rear crosses 60-140 mesh sieve, for subsequent use.
D. raw material sepiolite preparation: select sepiolite raw ore, air-dry pulverizing is rear crosses 60-140 mesh sieve, for subsequent use.
E. raw material prepared by steps A, B, C, D is mixed in proportion, obtain a kind of agricultural land soil amendment of the present invention.
Compared with prior art, advantage of the present invention and beneficial effect are:
A. the principal character of the present invention adjustable soil pH that has been reasonable disposition, the raw material that increases adsorption by soil site, form ion antagonism, make product can reduce Study on Availability Control of Heavy Metals in Soil from multi-angle.Pilot plant test and Demonstration And Extension result show: after using this product, and the heavy metal content such as the cadmium in agricultural-food, lead all meet " national food safety standard ".
B. the present invention not only has the function of in-situ passivation soil metal, and the permeability that can also improve soil pH value greatly, promote soil aggregate formation, strengthen soil, have concurrently and repair acidified soil, improve the functions such as soil tillage quality, being applicable to the soil that various soil parent material is grown, is a kind of broad spectrum type, multi-functional environmentfriendly products.
C. raw material sources of the present invention are extensive, and preparation method is simple, easy, easy to use, and popularizing application prospect is wide.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail; but be not the restriction to claims of the present invention request protection domain; the equivalent replacement of all any this areas done according to the disclosure of invention, all belongs to protection scope of the present invention.
In following examples 1-10, raw material unslaked lime is crossed 80 mesh sieves after pulverizing by the calcining of Wingdale raw ore and is prepared from, and this raw material unslaked lime is provided by Lime Factory of xiangtan, hunan province county, wherein mass percentage content >=75% of CaO;
In following examples 1-10, raw material wilkinite, zeolite, sepiolite are the air-dry pulverizing of its corresponding raw ore rear mistake 80 mesh sieve and are prepared from; These three kinds of raw ores provide by Ningxiang County ore powder factory of Hunan Province.
Embodiment 1: a kind of agricultural land soil amendment, it is made up of four kinds of raw materials that weight percent is following:
A preparation method for agricultural land soil amendment, the steps include: raw material unslaked lime, wilkinite, zeolite and sepiolite to mix in proportion, obtains product, and it is a kind of agricultural land soil amendment reducing heavy metals in farmland and pollute.
Embodiment 2-embodiment 10: a kind of agricultural land soil amendment, it is made up of four kinds of raw materials that weight percent is following:
| Embodiment | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Unslaked lime | 40％ | 40％ | 45％ | 45％ | 50％ | 55％ | 55％ | 60％ | 60％ |
| Wilkinite | 20％ | 20％ | 20％ | 15％ | 20％ | 25％ | 20％ | 5％ | 15％ |
| Zeolite | 25％ | 20％ | 25％ | 25％ | 10％ | 15％ | 20％ | 25％ | 10％ |
| Sepiolite | 15％ | 20％ | 10％ | 15％ | 20％ | 5％ | 5％ | 10％ | 15％ |
Its preparation methods steps is identical with embodiment 1.
The pilot plant test of above-mentioned agricultural land soil amendment is as described below:
During 2014, carry out Field trial test in crossing town, ChangSha, Hunan Province county and two places, gold township of Wangcheng district.Above-mentioned two places are heavy metal contamination arable land, Chang-Zhu-Tan Delta Region key area and repair pilot.
A. process is tested
Arrange and do not execute that any amendment (i.e. CK) and every mu use 120, the embodiment of the present invention 1 product (FM) three process of 160kg, three repetitions, the arrangement of random district group.Each process Monitoring of Paddy Rice Plant Area is 20m
2(4m × 5m), separates with the ridge (buried depth 0.3m) that the thick plastic film that 0.2m is wide wraps up between each process.Fertilization Level and other field management measures, respectively process is completely the same.
B. for examination crop varieties
Each process all unification selects the excellent China in sky to account for paddy rice (late rice)
C. application process
Use together with base fertilizer before turning over.
D. see (inspection) and survey project
Soil available cadmium, lead content is detected, the cadmium in agricultural-food, lead content, soil pH value during rice harves.
E. main result
Result shows, use the embodiment of the present invention 1 product, the available Cd in the polluted farmland soil of crossing town, Changsha County is made to have dropped 24.1%, 27.0% respectively, lead have dropped 28.7%, 40.4% respectively, the cadmium content in rice is made to decline 34.9%, 41.3% respectively, lead content have dropped 32.3%, 46.1% respectively, makes soil pH improve 0.23,0.31 respectively.
Use the embodiment of the present invention 1 product, the available Cd in gold township of Wangcheng district polluted farmland soil is made to have dropped 27.8%, 35.1% respectively, lead have dropped 34.1%, 44.8% respectively, the cadmium content in rice is made to have dropped 36.2%, 44.7% respectively, lead content have dropped 36.1%, 43.6% respectively, makes soil pH improve 0.20,0.29.
What subordinate list-1 product was applied on paddy rice falls cadmium effect
What subordinate list-2 product was applied on paddy rice falls plumbous effect
Subordinate list-3 product increases the effect of soil pH value
Claims (8)
1. an agricultural land soil amendment, is characterized in that, it is made up of four kinds of raw materials that weight percent is following:
Raw material weight per-cent (%)
Unslaked lime 40-60,
Wilkinite 5-25,
Zeolite 10-25,
Sepiolite 5-20.
2. agricultural land soil amendment according to claim 1, is characterized in that, it is made up of four kinds of raw materials that weight percent is following:
Raw material weight per-cent (%)
Unslaked lime 45-55,
Wilkinite 10-20,
Zeolite 15-25,
Sepiolite 5-15.
3. agricultural land soil amendment according to claim 1, is characterized in that, it is made up of four kinds of raw materials that weight percent is following:
Raw material weight per-cent (%)
Unslaked lime 50,
Wilkinite 15,
Zeolite 20,
Sepiolite 15.
4. the agricultural land soil amendment according to claim 1 or 2 or 3, is characterized in that: described unslaked lime is the powder crossing 60-140 mesh sieve after the calcining of Wingdale raw ore being pulverized.
5. the agricultural land soil amendment according to claim 1 or 2 or 3, is characterized in that: described wilkinite is by rear for air-dry for the raw ore of calcium base bentonite pulverizing powder crossing 60-140 mesh sieve.
6. the agricultural land soil amendment according to claim 1 or 2 or 3, is characterized in that: described zeolite is by rear for air-dry for the zeolite raw ore pulverizing powder crossing 60-140 mesh sieve.
7. the agricultural land soil amendment according to claim 1 or 2 or 3, is characterized in that: described sepiolite is by rear for air-dry for the sepiolite raw ore pulverizing powder crossing 60-140 mesh sieve.
8. the preparation method of arbitrary described agricultural land soil amendment in claim 1-7, its step is as follows:
Raw material unslaked lime, wilkinite, zeolite and sepiolite are mixed in proportion.
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| CN104861983B CN104861983B (en) | 2017-12-26 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105524619A (en) * | 2015-12-16 | 2016-04-27 | 江苏盖亚环境工程有限公司 | Acid soil amendment and preparation method thereof |
| CN106944472A (en) * | 2017-04-21 | 2017-07-14 | 航天凯天环保科技股份有限公司 | A kind of paddy field cadmium pollution soil renovation agent and its preparation method and application |
| CN106967441A (en) * | 2017-04-21 | 2017-07-21 | 航天凯天环保科技股份有限公司 | A kind of farmland cadmium pollution soil renovation agent and its preparation method and application |
| CN107090297A (en) * | 2017-04-21 | 2017-08-25 | 航天凯天环保科技股份有限公司 | A kind of heavy metal polluted soil of farmland renovation agent and its preparation method and application |
| CN107573135A (en) * | 2017-08-21 | 2018-01-12 | 河南心连心化肥有限公司 | A kind of multi-functional acid farmland conditioner and preparation method thereof |
| CN107903902A (en) * | 2017-11-22 | 2018-04-13 | 格丰科技材料有限公司 | One kind is used for agricultural land soil removing heavy metals soil conditioner and preparation method thereof |
| CN108795430A (en) * | 2018-05-22 | 2018-11-13 | 北京市农林科学院 | A kind of renovation agent and soil remediation method of cadmium pollution soil |
| CN109530414A (en) * | 2018-11-09 | 2019-03-29 | 中国科学院广州能源研究所 | A method of utilizing compost humic acid repairing heavy metal in soil |
| CN110153168A (en) * | 2018-03-05 | 2019-08-23 | 苏州睿烁环境科技有限公司 | A kind of renovation agent of heavy-metal contaminated soil and preparation method thereof |
| CN110591728A (en) * | 2019-10-31 | 2019-12-20 | 环保桥(湖南)生态环境工程股份有限公司 | Conditioner for mercury-polluted soil and preparation method thereof |
| CN115287072A (en) * | 2022-08-17 | 2022-11-04 | 中煤嘉沣(湖南)环保科技有限责任公司 | Heavy metal passivator and preparation method and application thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105524619A (en) * | 2015-12-16 | 2016-04-27 | 江苏盖亚环境工程有限公司 | Acid soil amendment and preparation method thereof |
| CN106944472A (en) * | 2017-04-21 | 2017-07-14 | 航天凯天环保科技股份有限公司 | A kind of paddy field cadmium pollution soil renovation agent and its preparation method and application |
| CN106967441A (en) * | 2017-04-21 | 2017-07-21 | 航天凯天环保科技股份有限公司 | A kind of farmland cadmium pollution soil renovation agent and its preparation method and application |
| CN107090297A (en) * | 2017-04-21 | 2017-08-25 | 航天凯天环保科技股份有限公司 | A kind of heavy metal polluted soil of farmland renovation agent and its preparation method and application |
| CN107573135A (en) * | 2017-08-21 | 2018-01-12 | 河南心连心化肥有限公司 | A kind of multi-functional acid farmland conditioner and preparation method thereof |
| CN107903902A (en) * | 2017-11-22 | 2018-04-13 | 格丰科技材料有限公司 | One kind is used for agricultural land soil removing heavy metals soil conditioner and preparation method thereof |
| CN110153168A (en) * | 2018-03-05 | 2019-08-23 | 苏州睿烁环境科技有限公司 | A kind of renovation agent of heavy-metal contaminated soil and preparation method thereof |
| CN108795430A (en) * | 2018-05-22 | 2018-11-13 | 北京市农林科学院 | A kind of renovation agent and soil remediation method of cadmium pollution soil |
| CN109530414A (en) * | 2018-11-09 | 2019-03-29 | 中国科学院广州能源研究所 | A method of utilizing compost humic acid repairing heavy metal in soil |
| CN109530414B (en) * | 2018-11-09 | 2021-05-04 | 中国科学院广州能源研究所 | Method for restoring heavy metals in soil by utilizing compost humic acid |
| CN110591728A (en) * | 2019-10-31 | 2019-12-20 | 环保桥(湖南)生态环境工程股份有限公司 | Conditioner for mercury-polluted soil and preparation method thereof |
| CN115287072A (en) * | 2022-08-17 | 2022-11-04 | 中煤嘉沣(湖南)环保科技有限责任公司 | Heavy metal passivator and preparation method and application thereof |
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