CN108329919A - A kind of conditioner and its preparation and application for cadmium pollution conditioner for acidified soil - Google Patents
A kind of conditioner and its preparation and application for cadmium pollution conditioner for acidified soil Download PDFInfo
- Publication number
- CN108329919A CN108329919A CN201711391967.7A CN201711391967A CN108329919A CN 108329919 A CN108329919 A CN 108329919A CN 201711391967 A CN201711391967 A CN 201711391967A CN 108329919 A CN108329919 A CN 108329919A
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- conditioner
- soil
- red mud
- cadmium pollution
- peat
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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
- 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 discloses a kind of conditioner and its preparation and application for cadmium pollution conditioner for acidified soil, which is the mixture that aluminium industry waste red mud and peat form, wherein the mass percent of the red mud powder is 30% 50%.When ploughing before proportion of crop planting, spread fertilizer over the fields in cultivated soil by conditioner row replacement or comprehensively.The present invention uses the simple complementary combinations of red mud peat, can be applied to severe conditioner for acidified soil, especially vegetable field application.The present invention in addition to being directed to cadmium pollution vegetable field simultaneously（Dry farming）/ rice field（Water is made）, more improved simultaneously for the conditioner of acidified soil, and synchronous reparation is carried out for this common simultaneous the problems of agricultural environment of Cadmium Pollution in Soils acidification.
Description
Technical field
The present invention relates to ecological, environmental protective technical field, specifically a kind of conditioner for cadmium pollution conditioner for acidified soil
And preparation method thereof and application method.
Background technology
Red mud is the solid waste of aluminum oxide industry, and appearance is similar to redness of the skin or complexion soil due to iron oxide content is big gains the name,
It is largest one of the industry byproduct of today's society, and storage capacity is about 3,000,000,000 tons and with annual 1.2 hundred million in global range
The scale of ton increases, and also there are a large amount of discharges in China every year, and the stockyard of large area is stacked for a long time, occupies a large amount of soils and right
Ecological environment causes enormous pressure, serious waste of resources, is comprehensively utilized to turn waste into wealth and has been a concern, but generally existing
Have technology there is of high cost, complex process, economic benefit are poor, especially treating capacity it is small it is disproportionate with its discharge capacity etc. because
Element leads to the extensive utilization that red mud is also not implemented at present.
Present reality environment another aspect, due to the long-term influence of high intensity human activity（Excessively apply chemical fertilizer, greenhouse vegetable
Dish continuous cropping, Acid Rain Pollution etc.）, Farmland Soil Acidification phenomenon generally aggravates, and assessing index is serious, plant growth obstacle, and
And such region is usually accompanied by heavy metal pollution phenomenon, most typical is exactly Cd elements, to ecological environment and agricultural production
Significant damage is caused, and threatens food security.Therefore, it adopts an effective measure and Cd pollution acidification agricultural land soils is improved and repaiied
It is multiple, to protection agroecological environment and ensure that crop production safety and agricultural sustainable development all there is important environment to anticipate
Justice and economic benefit.Mainly acid soil or passivation remediating heavy metal to be improved using materials such as lime, phosphorus containg substances dirty in the past
Contaminate soil, but lime side effect it is excessive be easy to cause soil hardening problem and the existing defects in terms of effect persistence, it is phosphorous
The use of material is then limited by factors such as resource provision and prices.And these means are typically more single, can not take into account solid
Determine heavy metal contaminants, improve soil pH, promote the multiple actual demand such as fertility, therefore urgently capable of having of deriving from a wealth of sources of exploitation
Effect, the long-term effect of persistently improvement heavy metal pollution acidification agricultural land soil, multifunctional comprehensive conditioner.
Invention content
The purpose of the present invention is the deficiency in for the above-mentioned prior art, provides and a kind of being used for cadmium pollution conditioner for acidified soil
Conditioner and preparation method thereof and application method.
It is a further object of the present invention to provide a kind of preparation methods of the conditioner for cadmium pollution conditioner for acidified soil.
Third object of the present invention is to provide a kind of application methods of the conditioner for cadmium pollution conditioner for acidified soil.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of conditioner for cadmium pollution conditioner for acidified soil, the conditioner is for aluminium industry waste red mud powder and naturally
The mixture of peat composition, wherein the mass percent of the red mud is 30%-50%.Main component based on red mud is iron oxygen
Compound, titanium oxide, silica and the aluminium oxide not dissolved out are given back earth table as clay matter aluminosilicate mineral ingredient
Layer system becomes a kind of ideal consideration, and its strong basicity may then be sent out in terms of acid soil improvement and fixed heavy metal contaminants
Rationally disposition and recycling purpose are realized in the effect of waving.Based on red mud inorganic constituents and alkali electroless feature in soil acidification
Potential advantages and peat with heavy metal stabilization field are as a kind of representative organic materials and the nature being widely present
Resource, it may have ideal fixed heavy metal and the performance for promoting fertility, the present invention turn waste into wealth red mud and natural material mud
Charcoal carries out inorganic-organic hybrid, and integrated complementary uses, and can be reached by adjusting soil pH, being passivated the effects that harmful heavy metal is active
To the purpose of improving crop yield, improvement vegetables and grain quality, ensure food safety.
In the further design scheme of the present invention, the mass percent of above-mentioned red mud powder is 50%.
A kind of preparation method of conditioner for cadmium pollution conditioner for acidified soil, step are：
Red mud and peat are carried out drying and processing at a temperature of air-drying or being not higher than 70 DEG C, then crushed by step 1 respectively, point
Red mud powder and peat clast are not obtained；
Step 2 carries out being sufficiently mixed after being matched red mud powder and peat clast by above-mentioned mass percent requirement
It is even, obtain the conditioner for cadmium pollution conditioner for acidified soil.
In the further design scheme of the present invention, the red mud powder and peat clast granularity that are obtained after being crushed in step 1
It is required that 5 mesh was at least needed to sieve -10 mesh sieve.
A kind of application method of conditioner for cadmium pollution conditioner for acidified soil will when ploughing before proportion of crop planting
The conditioner row replacement is spread fertilizer over the fields in cultivated soil comprehensively, and the usage amount of the conditioner is using in farmland 900- per acre
1800 kilograms of conditioners.
The present invention has advantageous effect following prominent：
The present invention is by the huge aluminium industry waste red mud recycling of yield, wherein oxide components of red mud and natural
The organic composition of material peat is complementary to work simultaneously, and heavy metal Cd pollution and acidification agriculture can effectively, persistently be improved by preparing
The inorganic-organic hybrid of field soil, multi-functional conditioner and guide its agricultural application.The present invention is directed to real generally existing
The dual the problems of agricultural environment of the acidified soil of heavy metal cadmium, by its complementary combinations, synchronize it is multi-functional be used for soil acidification
The stabilisation reparation of improvement and heavy metal pollution of soil.By adjusting soil aciditiy, being passivated the effects that harmful heavy metal is active,
While turning waste into wealth, reaches the purpose of improving crop yield, improving quality of agricultural product, ensure food safety.
Description of the drawings
Fig. 1 is comparative result figure whether green vegetables absorb the improvement of Cd contents in embodiment 1；
Comparative result figure whether Fig. 2 is the improvement of green vegetables biomass in embodiment 1；
Comparative result figure whether Fig. 3 is the improvement of soil pH value in embodiment 1；
Fig. 4 is comparative result figure whether romaine lettuce absorbs the improvement of Cd contents in embodiment 2；
Comparative result figure whether Fig. 5 is the improvement of romaine lettuce dish biomass in embodiment 2；
Comparative result figure whether Fig. 6 is the improvement of soil pH value in embodiment 2.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment 1
More batches of green vegetables are planted with the acidification agricultural land soil of conditioner improvement Cd pollutions.
The preparation of conditioner for cadmium pollution conditioner for acidified soil：It is red that its Industrial Solid Waste is provided by Shandong large size aluminium manufacturer
Mud, natural peat are derived from Jilin, and red mud and peat are air-dried respectively, then crushed, and cross 10 mesh and 5 mesh sieve respectively,
Respectively obtain red mud powder and peat clast；By red mud powder and peat clast by mass percentage 1:1 ratio is matched,
It is thoroughly mixed uniformly, the conditioner for cadmium pollution conditioner for acidified soil is made.
The acidification agricultural land soil of Cd pollutions is collected in Changsha（PH 4.43, acidification are serious）, connected in greenhouse with the soil
Continuous to have carried out 2 batches of green vegetables potting verifications, experiment includes not adding the control group of any improved materials and applying to match in the present embodiment
The soil improvement group of the conditioner of system.The soil of soil improvement group is only by the acid of air-dried Cd pollutions before first batch of green vegetables plantation
Change agricultural land soil quality 4% mixes application（1800 kgs/acre are equivalent to, mixing in experiment grants the row replacement or comprehensive in production
It is identical to spread fertilizer over the fields effect）, every group sets 3 repetitions.
After green vegetables harvest, biomass, Analysis of Heavy Metals are carried out respectively to the green vegetables of control group and soil improvement group, together
The step acquisition soil liquid carries out pH and measures and heavy metal concentration analysis.Obtained result is averaged evidence, as a result sees attached drawing 1-
3.As seen from Figure 3, control group soil liquid pH<4.5, original agricultural land soil environmental quality is degenerated seriously, and acidizing degree is higher, green
Dish growing way is bad and edible position heavy metal Cd content severely exceeds, referring to attached drawing 1, the Cd contents of the green vegetables of control group>5.5
Mg/kg dry weights；After conditioner improvement in the present embodiment, soil pH is significantly improved, referring to attached drawing 3, soil improvement
The soil liquid pH of group is 7 or so, and 2 units higher than control group, green vegetables growth is normal, and biomass greatly improves, referring to
Attached drawing 2, compared to the control group 11.3 grams, the green vegetables biomass of soil improvement group is promoted to 39.1 grams；Especially green vegetables eat portion
The emphasis harmful heavy metal pollutant Cd contents of position significantly reduce, from control group>5.5 greatly improve for<1.5 mg/kg are dry
Weight）, the activity of heavy metal in soil reduces, as manganese concentration is reduced to 0.054 mg/L, green vegetables quality peace by 3.16 in the soil liquid
It is protected entirely.
Embodiment 2
More batches of romaine lettuce are planted with the acidification agricultural land soil of conditioner improvement Cd pollutions.
The preparation of conditioner for cadmium pollution conditioner for acidified soil：Natural peat, red mud and the severe acidification of experiment
Agricultural land soil source and conditioner prepare it is in the same manner as in Example 1.
2 batches of romaine lettuce greenhouse pot culture verifications are carried out continuously in greenhouse, experiment includes not adding the control of any improved materials
The soil improvement group for the conditioner prepared in group and application the present embodiment.The soil of soil improvement group is only planted in first batch of romaine lettuce
The 4% of the preceding acidification agricultural land soil quality polluted by air-dried Cd mixes application, and every group sets 3 repetitions.
After romaine lettuce harvest, biomass, Analysis of Heavy Metals are carried out respectively to the romaine lettuce of control group and soil improvement group, together
The step acquisition soil liquid carries out pH and measures and heavy metal concentration analysis.Obtained result is averaged evidence, as a result sees attached drawing 4-
6.As seen from Figure 6, control group soil liquid pH<5, original agricultural land soil environmental quality is degenerated seriously, and acidizing degree is higher, romaine lettuce
It is difficult to normal growth and edible position heavy metal Cd content also severely exceeds, referring to attached drawing 4, the Cd contents of the romaine lettuce of control group
Close to 6.5 mg/kg dry weights；After conditioner improvement in the present embodiment, soil pH is significantly improved, referring to attached drawing 6,
The soil liquid pH of soil improvement group is 6.3 or so, and nearly 2 units higher than control group, in order, biomass is big for Growth of Lettuce
Width improves, and referring to attached drawing 5, compared to the control group 1 gram, the romaine lettuce biomass of soil improvement group is promoted to 9 grams or so；It is especially raw
The emphasis harmful heavy metal pollutant Cd contents of dish Leaf-feeding insects are significantly greatly reduced to food security range, referring to attached drawing 4 from
The 6.5 of control group greatly improve as 1.5 mg/kg dry weights, the activity reduction of heavy metal in soil, such as manganese concentration in the soil liquid
It is reduced to 0.14 mg/L by 3.9, safety is guaranteed for lettuce quality.
Industrial Solid Waste red mud, natural peat, pollution acidification agricultural land soil in Application Example 1 or 2, also carry out respectively
The greenhouse pot culture of rice-green vegetables continuous cropping and rice-romaine lettuce continuous cropping is verified.Experiment includes not adding the control group of any improved materials
With the soil improvement group of conditioner prepared in application the present embodiment, the soil in soil improvement group be only before Rice Cropping by
Air-dry soil quality 4% mixes application conditioner.Biomass, Analysis of Heavy Metals are carried out after rice, vegetables harvest, synchronizes and adopts
Collect soil and carries out pH measurement and available heavy metal concentration analysis；Every result is similar with the result of embodiment 1 and embodiment 2,
Show that the present invention is applicable not only to the Dry crop of green vegetables, romaine lettuce etc, the paddy field for being equally applicable to rice etc adjusts reparation soil
Earth acidity and heavy metal-passivated effect.Soil acidification and heavy metal pollution are two kinds of soil degradation situations, conditioning of the invention
Agent can play purposes, and also have both fertilizer performance.The conditioner of the present invention can maintain more long improvement to imitate with applied once
Fruit, such as several batches of crop-plantings, therefore there is long-term effect.
The present invention uses the simple complementary combinations of red mud-peat, and can be applied to severe conditioner for acidified soil, especially vegetables
Ground application.The present invention in addition to being directed to cadmium pollution vegetable field simultaneously（Dry farming）/ rice field（Water is made）, more simultaneously for the tune of acidified soil
Agent improvement is managed, and synchronous is carried out for this universal simultaneous the problems of agricultural environment of Cadmium Pollution in Soils-acidification
It repairs.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (5)
1. a kind of conditioner for cadmium pollution conditioner for acidified soil, which is characterized in that the conditioner is aluminium industry waste
The mixture of red mud and peat composition, wherein the mass percent of the red mud is 30%-50%.
2. the conditioner according to claim 1 for cadmium pollution conditioner for acidified soil, which is characterized in that the red mud
Mass percent is 50%.
3. the preparation method of the conditioner as claimed in claim 1 or 2 for cadmium pollution conditioner for acidified soil, step are：
Red mud and peat are carried out drying and processing at a temperature of air-drying or being not higher than 70 DEG C, then crushed by step 1 respectively, point
Red mud powder and peat clast are not obtained；
Step 2 is matched red mud powder and peat clast by mass percent requirement in claim 1 or claim 2
After be sufficiently mixed uniformly, obtain the conditioner for cadmium pollution conditioner for acidified soil.
4. the preparation method of the conditioner according to claim 3 for cadmium pollution conditioner for acidified soil, which is characterized in that
The red mud powder and peat clast granularity requirements obtained after being crushed in step 1 at least needed 5 mesh to sieve -10 mesh sieve.
5. the application method of the conditioner as claimed in claim 1 or 2 for cadmium pollution conditioner for acidified soil, which is characterized in that
When ploughing before proportion of crop planting, spread fertilizer over the fields in cultivated soil by the conditioner row replacement or comprehensively, the conditioner makes
Dosage is 900-1800 kilograms of conditioner of using in farmland per acre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391967.7A CN108329919A (en) | 2017-12-21 | 2017-12-21 | A kind of conditioner and its preparation and application for cadmium pollution conditioner for acidified soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711391967.7A CN108329919A (en) | 2017-12-21 | 2017-12-21 | A kind of conditioner and its preparation and application for cadmium pollution conditioner for acidified soil |
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| CN108329919A true CN108329919A (en) | 2018-07-27 |
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| CN201711391967.7A Pending CN108329919A (en) | 2017-12-21 | 2017-12-21 | A kind of conditioner and its preparation and application for cadmium pollution conditioner for acidified soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745859A (en) * | 2020-12-30 | 2021-05-04 | 江苏富邦环境建设集团有限公司 | Soil conditioner and soil improvement method |
| CN111269724B (en) * | 2020-03-10 | 2021-12-24 | 中国科学院合肥物质科学研究院 | Preparation method of acidic soil remediation agent, prepared soil remediation agent and application |
| CN113875343A (en) * | 2021-09-22 | 2022-01-04 | 贵州大学 | Method for rapidly increasing species abundance and diversity of mercury thallium ore waste storage yard |
| CN114350377A (en) * | 2022-01-25 | 2022-04-15 | 南京信息工程大学 | Soil conditioner based on sludge hydrothermal gasification by-product, preparation method and application |
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| CN102093896A (en) * | 2010-12-10 | 2011-06-15 | 湖南省土壤肥料研究所 | Soil conditioner for reducing bioavailability of cadmium in acid heavy cadmium polluted soil and method for improving soil |
| CN105670640A (en) * | 2016-01-07 | 2016-06-15 | 湖南美鑫隆生态环保科技有限公司 | Composite soil conditioner for treating Cd pollution, and preparation and use methods thereof |
| CN106424115A (en) * | 2016-08-31 | 2017-02-22 | 湖南现代环境科技股份有限公司 | In-situ passivation remediation method for cadmium polluted rice soil |
| CN107446589A (en) * | 2017-09-11 | 2017-12-08 | 江西洁地环境治理生态科技有限公司 | A kind of acid soil cadmium passivator and its application |
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2017
- 2017-12-21 CN CN201711391967.7A patent/CN108329919A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093896A (en) * | 2010-12-10 | 2011-06-15 | 湖南省土壤肥料研究所 | Soil conditioner for reducing bioavailability of cadmium in acid heavy cadmium polluted soil and method for improving soil |
| CN105670640A (en) * | 2016-01-07 | 2016-06-15 | 湖南美鑫隆生态环保科技有限公司 | Composite soil conditioner for treating Cd pollution, and preparation and use methods thereof |
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| CN107446589A (en) * | 2017-09-11 | 2017-12-08 | 江西洁地环境治理生态科技有限公司 | A kind of acid soil cadmium passivator and its application |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269724B (en) * | 2020-03-10 | 2021-12-24 | 中国科学院合肥物质科学研究院 | Preparation method of acidic soil remediation agent, prepared soil remediation agent and application |
| CN112745859A (en) * | 2020-12-30 | 2021-05-04 | 江苏富邦环境建设集团有限公司 | Soil conditioner and soil improvement method |
| CN113875343A (en) * | 2021-09-22 | 2022-01-04 | 贵州大学 | Method for rapidly increasing species abundance and diversity of mercury thallium ore waste storage yard |
| CN114350377A (en) * | 2022-01-25 | 2022-04-15 | 南京信息工程大学 | Soil conditioner based on sludge hydrothermal gasification by-product, preparation method and application |
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Application publication date: 20180727 |