CN111171837A - Heavy metal contaminated soil remediation agent and soil remediation method - Google Patents
Heavy metal contaminated soil remediation agent and soil remediation method Download PDFInfo
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- CN111171837A CN111171837A CN202010024341.8A CN202010024341A CN111171837A CN 111171837 A CN111171837 A CN 111171837A CN 202010024341 A CN202010024341 A CN 202010024341A CN 111171837 A CN111171837 A CN 111171837A
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (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 heavy metal contaminated soil remediation agent and a soil remediation method, wherein the remediation agent comprises, by weight, 50-80 parts of treatment activated carbon, 3-10 parts of zeolite, 10-20 parts of marl soil, 20-30 parts of wine waste liquid and 0.05-1 part of azotobacter chroococcum. The repairing agent provided by the invention is used for the wine waste liquid, is environment-friendly and economical, can be used for remarkably repairing heavy metal pollution in soil, does not produce secondary pollution, and is simple in operation process, short in period and quick in effect.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to a heavy metal contaminated soil remediation agent and a soil remediation method.
Background
With the increase of population and the acceleration of industrialization process, the pollution of industrial three wastes, fertilizers and pesticides becomes more serious, and the quality of farmland soil is gradually degraded. The soil pollution problem has become one of the major problems that endanger the global environmental quality and human survival and development. The soil pollution condition investigation result of China shows that the exceeding rate of the soil point position of the cultivated land is close to 20 percent, more than 80 percent of the exceeding rate of the soil point position is heavy metal, and the soil heavy metal pollution causes social concern and attention.
Heavy metal contamination refers to environmental contamination caused by heavy metals or compounds thereof. Mainly caused by human factors such as mining, waste gas discharge, sewage irrigation, use of products with heavy metals exceeding standards and the like. The heavy metal pollution of soil has the characteristics of concealment, long-term property and irreversibility, directly or indirectly pollutes underground water and air, harms crops and organisms, and even endangers the health and the life of human beings. Therefore, repairing heavy metal contaminated soil and recovering the original functions of the soil are always hot research subjects at home and abroad.
However, the existing polluted soil remediation technology has large engineering quantity, high investment cost and secondary pollution hidden trouble, and heavy metals are easy to reactivate and are not suitable for the treatment of large-area polluted soil.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the heavy metal contaminated soil remediation agent and the soil remediation method are provided.
The technical scheme adopted by the invention is as follows:
a heavy metal contaminated soil remediation agent comprises, by weight, 50-80 parts of treatment activated carbon, 3-10 parts of zeolite, 10-20 parts of marl soil, 20-30 parts of wine waste liquid and 0.05-1 part of azotobacter chroococcum.
Further, the composite material comprises, by weight, 60 parts of treated activated carbon, 8 parts of zeolite, 15 parts of marl, 25 parts of wine waste liquid and 0.05 part of azotobacter chroococcum.
Further, the treated active carbon is obtained by soaking the active carbon in 20-25 vt% ammonia water for 3-5 h.
The waste wine liquid, i.e. the waste water in wine production, mainly comes from the working procedures of squeezing, fermentation tank cleaning, filtering, canning and the like in the grape processing process, the waste water mainly contains squeezed grape juice, fermentation residues of grape skin and seeds, tartaric precipitate and other impurities, and the organic components mainly comprise sugar, alcohol and organic acid compounds. The existing wine waste liquid is generally discharged after being treated by environment-friendly equipment; the method adopts the treatment active carbon to treat the wine waste liquid and then applies the treated wine waste liquid to the remediation of the heavy metal soil pollution, effectively utilizes industrial waste materials and obtains good pollution remediation effect.
Heavy metals in the soil form long-term harmless insoluble substances with organic acid chelating compounds in the wine wastewater through chelating action under the action of the soil remediation agent, so that the heavy metals are effectively prevented from leaching out; in addition, the azotobacter chroococcum utilizes organic components in the wine waste liquid as nutrition, the nitrogen fixation effect is carried out, the soil fertility is enhanced, and meanwhile, the azotobacter chroococcum has a certain promotion effect on heavy metal chelation. The invention can also adopt other azotobacteria with similar azotobacteria from round brown.
The preparation method of the heavy metal contaminated soil remediation agent comprises the following steps:
s1, adding activated carbon into ammonia water, soaking for 3-5 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, and uniformly mixing to obtain the azotobacter chroococcum.
Further, the concentration of ammonia water in S1 is 20-25 vt%.
Further, standing for 1-3d in S4, and turning the pile every 5-10 h.
Further, it was left standing for 2d in S4, and pile turning was performed every 10 h.
Further, after S5, pulverization and granulation are performed.
The method for repairing the soil polluted by the heavy metal comprises the following steps:
and (3) reforming the soil polluted by heavy metals, and then adding 0.8-1.5kg of the soil heavy metal pollution remediation agent into each mu of the soil.
Further, still include: planting leguminous plants on the heavy metal polluted soil; the legume includes soybean, broad bean, kidney bean, cowpea, mung bean, red bean, hyacinth bean and sword bean.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention adopts the wine production wastewater which contains a large amount of organic components, wherein the organic components mainly comprise sugar, alcohol and organic acid compounds, and are used as the basis of the heavy metal polluted soil remediation agent; heavy metals in the soil form long-term harmless insoluble substances with organic acid chelating compounds in the wine wastewater through chelating action under the action of the soil remediation agent, so that the heavy metals are effectively prevented from leaching out; in addition, the azotobacter chroococcum utilizes organic matters in the wine waste liquid as nutrition to fix nitrogen, so that the soil fertility is enhanced, and meanwhile, the azotobacter chroococcum also has a certain promotion effect on heavy metal chelation;
2. according to the invention, the bean plants are planted in the soil polluted by the heavy metal, so that the soil fertility is further enhanced, the chelation effect is promoted to a certain extent, the plant growth has the absorption and enrichment effects on the heavy metal components in the soil, and the heavy metal pollution of the soil is further eliminated;
3. the wine waste water adopted by the invention is used as a component of the repairing agent, and after the treated active carbon is mixed, the adverse effects of over-high acidity and the like caused by the waste sulfuric acid as an industrial waste material are effectively eliminated;
4. the heavy metal contaminated soil remediation agent has the treatment efficiency of more than 88% of As, Cr, Pb and Hg in the heavy metal contaminated soil, and has good heavy metal contaminated soil remediation effect.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The heavy metal contaminated soil remediation agent provided by the preferred embodiment of the invention comprises, by weight, 60 parts of treatment activated carbon, 8 parts of zeolite, 15 parts of marl soil, 25 parts of wine waste liquid and 0.05 part of azotobacter chroococcum.
The preparation method of the heavy metal contaminated soil remediation agent comprises the following steps:
s1, adding activated carbon into ammonia water, soaking for 4 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, uniformly mixing, crushing and granulating.
The method for repairing the soil polluted by the heavy metal comprises the following steps: reforming heavy metal contaminated soil, and then adding 1kg of the heavy metal contaminated soil remediation agent into each mu of the soil; and (4) planting soybeans on the soil polluted by the heavy metals.
Example 2
The heavy metal contaminated soil remediation agent provided by the preferred embodiment of the invention comprises, by weight, 70 parts of treatment activated carbon, 5 parts of zeolite, 18 parts of marl soil, 23 parts of wine waste liquid and 0.06 part of azotobacter chroococcum.
The preparation method of the heavy metal contaminated soil remediation agent comprises the following steps:
s1, adding activated carbon into ammonia water, soaking for 4 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, uniformly mixing, crushing and granulating.
The method for repairing the soil polluted by the heavy metal comprises the following steps: reforming heavy metal contaminated soil, and then adding 1kg of the heavy metal contaminated soil remediation agent into each mu of the soil; planting cowpeas on the soil polluted by the heavy metals.
Example 3
The heavy metal contaminated soil remediation agent provided by the preferred embodiment of the invention comprises 65 parts of treatment activated carbon, 8 parts of zeolite, 18 parts of marl soil, 28 parts of wine waste liquid and 0.07 part of azotobacter chroococcum.
The preparation method of the heavy metal contaminated soil remediation agent comprises the following steps:
s1, adding activated carbon into ammonia water, soaking for 4 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, uniformly mixing, crushing and granulating.
The method for repairing the soil polluted by the heavy metal comprises the following steps: reforming heavy metal contaminated soil, and then adding 1kg of the heavy metal contaminated soil remediation agent into each mu of the soil; broad beans are planted on the soil polluted by heavy metals.
Example 4
The heavy metal contaminated soil remediation agent provided by the preferred embodiment of the invention comprises 50 parts by weight of treatment activated carbon, 3 parts by weight of zeolite, 10 parts by weight of marl soil, 20 parts by weight of wine waste liquid and 0.08 part by weight of azotobacter chroococcum.
The preparation method of the heavy metal contaminated soil remediation agent comprises the following steps:
s1, adding activated carbon into ammonia water, soaking for 3 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, uniformly mixing, crushing and granulating.
The method for repairing the soil polluted by the heavy metal comprises the following steps: soil polluted by heavy metals is turned, and then 0.8kg of the heavy metal polluted soil remediation agent is added into each mu of the soil; planting hyacinth beans in the soil polluted by heavy metal.
Example 5
The heavy metal contaminated soil remediation agent provided by the preferred embodiment of the invention comprises 80 parts by weight of treatment activated carbon, 10 parts by weight of zeolite, 20 parts by weight of marl soil, 30 parts by weight of wine waste liquid and 1 part by weight of azotobacter chroococcum.
The preparation method of the heavy metal contaminated soil remediation agent comprises the following steps:
s1, adding activated carbon into ammonia water, soaking for 5 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, uniformly mixing, crushing and granulating.
The method for repairing the soil polluted by the heavy metal comprises the following steps: reforming heavy metal contaminated soil, and then adding 1.5kg of the heavy metal contaminated soil remediation agent into each mu of the soil; and planting mung beans in the soil polluted by heavy metals.
Examples of the experiments
The repairing effect of the heavy metal contaminated soil repairing agent obtained in the embodiment 1 of the invention on the heavy metal contamination of soil is shown in the following table 1:
TABLE 1 remediation effect of soil contaminated with heavy metals
| Heavy metals | Concentration before treatment (ppb) | Concentration after treatment (ppb) | Efficiency of treatment |
| As | 820 | 20 | 97.5％ |
| Cr | 653 | 73 | 88.8％ |
| Pb | 67000 | 950 | 98.6％ |
| Hg | 1000 | 55 | 94.5％ |
As can be seen from Table 1: the heavy metal polluted soil repairing agent obtained in the embodiment 1 of the invention has the treatment efficiency of more than 88% of As, Cr, Pb and Hg in the heavy metal polluted soil, so that the heavy metal polluted soil repairing agent has a good soil heavy metal pollution repairing effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The heavy metal contaminated soil remediation agent is characterized in that: the composite material comprises, by weight, 50-80 parts of treated activated carbon, 3-10 parts of zeolite, 10-20 parts of marl, 20-30 parts of wine waste liquid and 0.05-1 part of azotobacter chroococcum.
2. The soil heavy metal pollution remediation agent of claim 1, wherein: the nitrogen-fixing agent comprises, by weight, 60 parts of treated activated carbon, 8 parts of zeolite, 15 parts of marl, 25 parts of wine waste liquid and 0.05 part of azotobacter chroococcum.
3. The soil heavy metal pollution remediation agent of claim 1 or 2, wherein: the treated active carbon is obtained by soaking the active carbon in 20-25 vt% ammonia water for 3-5 h.
4. The method for preparing a heavy metal contaminated soil remediation agent as claimed in claim 1 or claim 2, comprising the steps of:
s1, adding activated carbon into ammonia water, soaking for 3-5 hours, and filtering to obtain treated activated carbon;
s2, adding the treated activated carbon obtained in the step S1 into the glucose waste liquid to obtain a mixture A;
s3, mixing the marl soil and the zeolite, and uniformly stirring to obtain a mixture B;
s4, uniformly mixing the mixture A obtained in the step S2 with the mixture B obtained in the step S3, and standing to obtain a mixture C;
s5, adding azotobacter chroococcum into the mixture C, and uniformly mixing to obtain the azotobacter chroococcum.
5. The method for preparing a heavy metal contaminated soil remediation agent as claimed in claim 4, wherein: the concentration of the ammonia water in the S1 is 20-25 vt%.
6. The method for preparing a heavy metal contaminated soil remediation agent as claimed in claim 4, wherein: and standing for 1-3d in the S4, and turning the pile every 5-10 h.
7. The method for preparing a heavy metal contaminated soil remediation agent as claimed in claim 4, wherein: and standing for 2d in the S4, and turning the pile every 10 h.
8. The method for preparing a heavy metal contaminated soil remediation agent as claimed in claim 4, wherein: after S5, the resultant was pulverized and granulated.
9. The method for soil remediation with the heavy metal contaminated soil remediation agent of claim 1 or 2, comprising:
and (3) reforming the soil polluted by heavy metals, and then adding 0.8-1.5kg of the soil heavy metal pollution remediation agent into each mu of the soil.
10. The method of claim 9, further comprising: and (3) planting leguminous plants on the soil polluted by the heavy metal.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575020A (en) * | 2020-06-24 | 2020-08-25 | 代彦霞 | Remediation agent and method for remediating heavy metal contaminated soil by using same |
| CN112028713A (en) * | 2020-09-15 | 2020-12-04 | 湖南亿康环保科技有限公司 | Passivator for treating soil arsenic pollution and treatment method |
| CN112457852A (en) * | 2020-11-24 | 2021-03-09 | 山东大学 | Red mud-based ferrate mixture soil remediation agent as well as preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170642A (en) * | 2015-09-30 | 2015-12-23 | 河南行知专利服务有限公司 | Restoration method for industrial waste land soil heavy metal contamination |
| CN110149833A (en) * | 2019-06-04 | 2019-08-23 | 阜阳师范学院 | A method of application charcoal improves soil |
-
2020
- 2020-01-10 CN CN202010024341.8A patent/CN111171837A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170642A (en) * | 2015-09-30 | 2015-12-23 | 河南行知专利服务有限公司 | Restoration method for industrial waste land soil heavy metal contamination |
| CN110149833A (en) * | 2019-06-04 | 2019-08-23 | 阜阳师范学院 | A method of application charcoal improves soil |
Non-Patent Citations (7)
| Title |
|---|
| 何威威等: "《茶籽壳活性炭的制备条件及表面处理效果的研究》", 《广州化工》 * |
| 刘洁等: "《土壤重金属的竹基活性炭吸附及近红外光谱预测》", 《环境工程学报》 * |
| 吴礼树: "《土壤肥料学》", 31 July 2004, 中国农业出版社 * |
| 敖雪桔等: "《环境保护概论》", 31 December 2008, 哈尔滨地图出版社 * |
| 杰克逊: "《葡萄酒科学：原理与应用》", 31 December 2017, 中国轻工业出版社 * |
| 科学技术部中国农村技术开发中心组编: "《有机农业在中国》", 31 October 2016, 中国农业科学技术出版社 * |
| 郑顺安等: "《耕地重金属污染防治管理理论与实践》", 31 July 2017, 中国环境出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575020A (en) * | 2020-06-24 | 2020-08-25 | 代彦霞 | Remediation agent and method for remediating heavy metal contaminated soil by using same |
| CN112028713A (en) * | 2020-09-15 | 2020-12-04 | 湖南亿康环保科技有限公司 | Passivator for treating soil arsenic pollution and treatment method |
| CN112457852A (en) * | 2020-11-24 | 2021-03-09 | 山东大学 | Red mud-based ferrate mixture soil remediation agent as well as preparation method and application thereof |
| CN112457852B (en) * | 2020-11-24 | 2022-02-01 | 山东大学 | Red mud-based ferrate mixture soil remediation agent as well as preparation method and application thereof |
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Application publication date: 20200519 |