CN103242849B - Comprehensive conditioner for restoring acid soil polluted by copper and cadmium and preparation method of comprehensive conditioner - Google Patents
Comprehensive conditioner for restoring acid soil polluted by copper and cadmium and preparation method of comprehensive conditioner Download PDFInfo
- Publication number
- CN103242849B CN103242849B CN201310186405.4A CN201310186405A CN103242849B CN 103242849 B CN103242849 B CN 103242849B CN 201310186405 A CN201310186405 A CN 201310186405A CN 103242849 B CN103242849 B CN 103242849B
- Authority
- CN
- China
- Prior art keywords
- conditioner
- comprehensive
- soil
- preparation
- copper
- 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.)
- Active
Links
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to the technical field of environments and particularly relates to a comprehensive conditioner for restoring acid soil polluted by copper and cadmium and a preparation method of the comprehensive conditioner. The pH value of the comprehensive conditioner is larger than 10; and the comprehensive conditioner is composed of the following components in percentage by weight: 95-96% of organic fertilizer, 3-5% of lime stone powder or caustic dross and 0.2-1.0% of nano-hydroxyapatite. The preparation method comprises the following steps of: uniformly stirring all the components, and screening to obtain the comprehensive conditioner. The comprehensive conditioner for restoring soil is low in cost, convenient to use, better in effect and capable of realizing the cyclic utilization of large-scale breeding feces, integrating polluted soil restoration and improvement and overcoming the defects that caustic materials such as the lime stone powder and the like are difficult to spread and the soil is easily hardened.
Description
Technical field
The present invention relates to field of environmental technology, specifically, relate to reparation and the improvement of copper cadmium pollution acid soil.
Background technology
Heavy metal pollution of soil is the subject matter that global environment faces, and along with the development of industrial and agricultural production, China's heavy metal pollution of soil problem is day by day serious, serious harm agricultural product quality and safety and HUMAN HEALTH.Jiangxi Copper group Guixi Smelter is global maximum monomer cupper smelting; eighties of last century beginning of the eighties; because people's environmental protection consciousness is thinner, environmental practice is not in time; a large amount of acid waste water and slag percolate enter periphery farmland by dirty filling; result in serious Cu, Cd and pollute (the full Cu of soil most high-content reaches 3260mg/kg, full Cd content is up to 88.1mg/kg); have a strong impact on plant growth; the lighter's rice Cd exceeds standard; No kernels or seeds are gathered, as in a year of scarcity for severe patient, and vegetation is difficult to survive.Here not only Cu, Cd are seriously polluted for soil, also there is severe acidification phenomenon (general soil pH<5.0), structure difference or basic non-structure.Commercially available Cu, Cd caused for Copper making industry is not also had to pollute the comprehensively regulating agent of acid soil reparation at present.
We on a large amount of pre-stage test bases, combine and bear in national Heavy Metal Pollution Control special project " nine Ns, Tong Guiye neighboring area, river hilllock soil remediation pilot project " engineering practice, Cu, Cd that development and production cause for the typical Copper making industry of China pollute acid soil and repair comprehensively regulating agent.
Summary of the invention
This provides one to utilize cow dung, limestone powder or alkaline residue, the reparation comprehensively regulating agent of nanometer hydroxyapatite production of copper cadmium pollution acid soil and soil remediation method.
The agent of the present invention's said soil remediation comprehensively regulating, pH>10, is made up of following component by weight: fertilizer 95-96%, limestone powder or industrial caustic 3-5%, nanometer hydroxyapatite 0.2-1.0%.
The agent of above-mentioned soil remediation comprehensively regulating obtains by the following method: each component stirred by the formula of fertilizer 95-96%, limestone powder or alkaline residue 3-5%, nanometer hydroxyapatite 0.2-1.0%, cross 5mm sieve, the acid soil obtaining copper cadmium pollution repairs comprehensively regulating agent.
Described fertilizer utilizes the aerobic fermentation compostings such as cow dung (pig manure that large-scale pig farm produces had better not be used for the agent of contaminated soil remediation comprehensively regulating due to itself containing higher heavy metal), stalk; in production fertilizer process, do not need humic acids acid adjustment, keep organic fertilizer raw material in alkalescence.If alkalescence is not strong, interpolation limestone powder or free of contamination industrial caustic are to increase pH in right amount, simultaneously in order to the adsorptive power strengthening soil remediation amendment heavy metal adds appropriate nanometer hydroxyapatite.Like this, by fertilizer, limestone powder or alkaline residue, nanometer hydroxyapatite according to necessarily comparing mixing, the acid soil just obtaining copper cadmium pollution repairs comprehensively regulating agent.Here the Main Function of fertilizer is improvement Soil structure, coordinates fertilizer provision from soil fertilizer conservation performance, improves the adsorptive power of soil pH and heavy metal simultaneously; The Main Function of limestone powder or industrial caustic increases pH, to reduce the validity of heavy metal; The major function of nanometer hydroxyapatite (because nanometer hydroxyapatite price is more high-leveled and difficult to use as the independent big area of soil-repairing agent) is the absorption increasing soil heavy metal, reduces the heavy metal desorb under the multiple sour condition of soil.
Show through engineering practice, after using the agent of 200-300kg/ mu soil remediation comprehensively regulating, soil Cu, Cd validity reduces by more than 80%, and soil fertility significantly improves, and slight pollution Soil-rice per unit area yield increases 40-50%, production rice meets national food hygienic standard; Severe contamination soil vegetative cover also can quick-recovery soon, produces energy-source plant or flower plants and nursery stock.Through the practice more than 1 year, Guixi Smelter periphery more than 2000 mu of contaminated soil obtains repairing, improveing substantially.Certainly, have the factors such as serious acid deposition may cause the multiple sour problem of soil due to periphery, the general 5-10 of soil remediation comprehensively regulating agent uses once as well.
The reparation comprehensively regulating agent of this soil by dirty for breeding scale excrement recycle, cheap, use conveniently, integrate contaminated soil remediation and improve, overcome the difficulty that the materials such as limestone powder are difficult to spread fertilizer over the fields, the shortcoming easily causing soil compaction, and effect is better.
Embodiment
Embodiment 1: prepared by the agent of soil remediation comprehensively regulating
(1), the composting of cow dung
Cow dung (adding the straw of 10% pulverizing) → adjustment water content to 40-50% → access organic matter decomposing inoculant banks up → glow stage (15-45 DEG C) → hot stage (60-70 DEG C), turning 1 time in every two days, altogether turning 3 times → be cooled to 45 DEG C → compacting is stacked → is regulated water content and is less than 20%, organic matter is greater than 30%, total nutrient (N+P
2o
5+ K
2o) content is greater than 4%, pH value >8.
(2), comprehensively regulating agent prescription
Fertilizer 95-96%, limestone powder or alkaline residue 3-5%, the acid soil of hydroxylapatite powder 0.2-1.0% → stir → sieve → obtain copper cadmium pollution repairs comprehensively regulating agent, pH>10.
Embodiment 2:
(1), application process
First more than plowed soils 20cm, spread fertilizer over the fields the agent of 200-300kg/ mu comprehensively regulating again, finally carry out rotary tillage amendment is evenly distributed, can normally sow or transplant farm crop after general 1 week.For seedling growth, except spreading fertilizer over the fields, also can concentrate at tree stump place and spread manuer in holes, note mixing with soil.
(2) application effect
The agricultural land soil of pH4.5, full Cu1073mg/kg, effectively Cu339mg/kg, full Cd6.79mg/kg, effectively Cd2.39mg/kg.Do not take ameliorative measure, peasant household's rice yield of general planting is generally 250kg/ mu, brown rice Cu content 7.25mg/kg, Cd content 0.56mg/kg, does not meet national food hygienic standard; Under using the improvement of 200kg/ mu limestone powder, conventional fertilizer application management condition, rice yield 350kg/ mu, brown rice Cu content 5.19mg/kg, Cd content 0.23mg/kg; Under using the agent of soil remediation comprehensively regulating, Routine Management fertilizer application condition, rice yield is more than 500kg/ mu, and brown rice Cu content 5.08mg/kg, Cd content 0.19mg/kg, reaches national food hygienic standard.
The barren land of the full Cu3200mg/kg of pH4.3, soil, effectively Cu600mg/kg, full Cd15.20mg/kg, effectively Cd5.10mg/kg (cannot plant and the farmland of laying idle more than 10 year owing to polluting), before using amendment, the plants such as huge bacterium grass, Caulis Miscanthis floriduli, rye grass all can not grow.Use the agent of 300kg/ mu comprehensively regulating, Soil available Cu is reduced to below 15mg/kg, is effectively reduced to below 0.6mg/kg, the plant such as Caulis Miscanthis floriduli, rye grass is energy normal growth all, and after compounding application 20kg/ mu urea, huge bacterium Herbage harvest is up to more than 20 tons/mu (fresh weights).
Claims (2)
1. the reparation comprehensively regulating agent of a copper cadmium pollution acid soil, it is characterized in that, this amendment pH>10, is made up of following component by weight: fertilizer 95-96%, limestone powder or alkaline residue 3-5%, nanometer hydroxyapatite 0.2-1.0%, and each component sum is 100%.
2. prepare the method for amendment described in claim 1 for one kind, it is characterized in that comprising the steps: that each component stirs, sieves by the formula by fertilizer 95-96%, limestone powder or alkaline residue 3-5%, nanometer hydroxyapatite 0.2-1.0%, the acid soil obtaining copper cadmium pollution repairs comprehensively regulating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186405.4A CN103242849B (en) | 2013-05-17 | 2013-05-17 | Comprehensive conditioner for restoring acid soil polluted by copper and cadmium and preparation method of comprehensive conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186405.4A CN103242849B (en) | 2013-05-17 | 2013-05-17 | Comprehensive conditioner for restoring acid soil polluted by copper and cadmium and preparation method of comprehensive conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103242849A CN103242849A (en) | 2013-08-14 |
| CN103242849B true CN103242849B (en) | 2015-02-18 |
Family
ID=48922731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310186405.4A Active CN103242849B (en) | 2013-05-17 | 2013-05-17 | Comprehensive conditioner for restoring acid soil polluted by copper and cadmium and preparation method of comprehensive conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103242849B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733599A (en) * | 2016-01-28 | 2016-07-06 | 中南大学 | Cadmium-contaminated soil remediation fixing agent based on microorganism assembly synthesis as well as preparation and application method thereof |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497771B (en) * | 2013-09-06 | 2015-12-09 | 中国科学院红壤生态实验站 | A kind of acid soil composite modifying agent based on biomass power plant ash |
| CN104232099A (en) * | 2014-05-30 | 2014-12-24 | 昆明绿色中迅生物有限公司 | Modifier for acidic soil |
| CN104829389A (en) * | 2015-04-08 | 2015-08-12 | 中国科学院南京土壤研究所 | Composition for promoting growth of acidic soil peanut and application thereof |
| CN105670636B (en) * | 2016-03-01 | 2019-06-14 | 中国科学院南京土壤研究所 | A kind of passivating material and its preparation method and application for repairing cadmium copper pollution acid soil |
| CN107377600A (en) * | 2017-07-05 | 2017-11-24 | 中南林业科技大学 | For repairing the efficient conditioner and its application process of cadmium arsenic combined contamination soil |
| CN107983766A (en) * | 2017-12-20 | 2018-05-04 | 华南师范大学 | A kind of preparation method and application of heavy metal cadmium soil remediation material |
| CN109020748A (en) * | 2018-07-25 | 2018-12-18 | 南京格洛特环境工程股份有限公司 | Heavy metal soil-repairing agent |
| CN110283598A (en) * | 2019-07-08 | 2019-09-27 | 河南乐长农业科技有限公司 | It is a kind of for the soil remediation conditioner of agricultural pollution and its application |
| CN114381277B (en) * | 2022-01-29 | 2022-07-19 | 中节能（连云港）清洁技术发展有限公司 | Soil conditioner based on harmless and recycling treatment of alkali residues and preparation thereof |
| CN114989828A (en) * | 2022-06-27 | 2022-09-02 | 湖北工业大学 | Novel curing agent for curing heavy metal copper polluted soil and use method thereof |
-
2013
- 2013-05-17 CN CN201310186405.4A patent/CN103242849B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 《Changes in microbial properties after manure, lime, and bentonite application to a heavy metal-contamin ated mine waste》;Luke R. Baker et al.;《Applied Soil Ecology》;20110321;第48卷(第1期);第1-10页 * |
| 《纳米羟基磷灰石对重金属污染土壤Cu/Cd形态分布及土壤酶活性影响》;崔红标等;《农业环境科学学报》;20110520;第30卷(第5期);第874-880页 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733599A (en) * | 2016-01-28 | 2016-07-06 | 中南大学 | Cadmium-contaminated soil remediation fixing agent based on microorganism assembly synthesis as well as preparation and application method thereof |
| CN105733599B (en) * | 2016-01-28 | 2019-04-23 | 中南大学 | A kind of cadmium pollution soil reparation fixative and its methods for making and using same based on microorganism assembling synthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103242849A (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103242849B (en) | Comprehensive conditioner for restoring acid soil polluted by copper and cadmium and preparation method of comprehensive conditioner | |
| Swarup et al. | Impact of land use and management practices on organic carbon dynamics in soils of India | |
| CN105542775B (en) | A kind of passivator and its application for faintly acid cadmium pollution soil | |
| CN104289506B (en) | Cadmium, zinc, lead, copper ion contaminated soil biological renovation method | |
| CN105400519A (en) | Method for rapidly remedying farmland with heavy metals in fallow period by using modifier | |
| CN104446895A (en) | Trichoderma biological humic acid and product thereof | |
| Bhat et al. | Rehabilitating acid soils for increasing crop productivity through low-cost liming material | |
| CN104813885A (en) | Production method for cadmium-polluted rice land governing and rice cadmium reduction | |
| CN109108061A (en) | A method of utilizing the restoring cadmium polluted farmland of rice-rape rotation | |
| CN106278692A (en) | A kind of acidic soil conditioner and preparation method thereof | |
| CN107098746A (en) | A kind of capsicum Special compound microbial fertilizer and preparation method thereof | |
| CN106077056A (en) | A kind of Bioremediation method for heavy-metal contaminated soil of mining area | |
| CN103420730B (en) | Hole-tray vegetable cultivation substrate | |
| CN103621391B (en) | Vegetable plug seedling composite substrate and preparation method thereof | |
| Qazi et al. | Economical and environmental implications of solid waste compost applications to agricultural fields in Punjab, Pakistan | |
| CN105294281A (en) | Jatropha curcas dedicated composite fertilizer, preparation method and applications thereof | |
| CN101445404A (en) | Special fertilizer for barbadosnut | |
| CN106631623A (en) | Acid soil improvement fertilizer and preparation method thereof | |
| CN105237141A (en) | Straw biological matrix seedling-raising disk and preparation method thereof | |
| CN109618871A (en) | Nutrition Soil is used in garden seedling tree plantation | |
| CN103524220B (en) | Production method for rice seedling cultivation dedicated organic fertilizer | |
| CN105080953B (en) | A kind of auxotype resistance control agent for reducing rice Cd contents and its application method | |
| CN108690629A (en) | A kind of farmland soil modifying agent and preparation method thereof | |
| CN105660236A (en) | Rice seedling cultivating medium prepared from cow dung | |
| CN105084964A (en) | Organic decomposed fertilizer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 210009, 5 new model street, Gulou District, Jiangsu, Nanjing Patentee after: Institute of Soil Science, Chinese Academy of Sciences Address before: 210008 Beijing East Road, Nanjing, Jiangsu Province, No. 71 Patentee before: Institute of Soil Science, Chinese Academy of Sciences |