Conditioner for mercury-contaminated soil remediation treatment, and preparation method thereof

A soil conditioner and mercury pollution technology, applied in the field of farmland soil remediation, can solve the problems that it is difficult to achieve various forms of mercury content, complicated production methods, and high remediation costs, and is conducive to large-scale popularization and use, easy to buy, and improve soil quality. The effect of pH

Active Publication Date: 2019-12-20
江苏康土生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) Most products can reduce the concentration of soil mercury to a certain extent, but the production methods of the products are complicated and the restoration cost is high
[0008] (4) Most products can reduce the content of a certain form of mercury, but it is difficult to reduce the content of multiple forms of mercury

Method used

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  • Conditioner for mercury-contaminated soil remediation treatment, and preparation method thereof
  • Conditioner for mercury-contaminated soil remediation treatment, and preparation method thereof
  • Conditioner for mercury-contaminated soil remediation treatment, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A conditioner for mercury-contaminated soil restoration, which is made of the following five raw materials in weight percentage:

[0047] Raw material weight percentage (%)

[0048] Bentonite 12

[0049] Quicklime 33

[0050] Sepiolite Powder 15

[0051] Humic acid 34

[0052] Chitosan 6

[0053] The preparation method of the conditioning agent for the above-mentioned mercury-polluted soil remediation, the steps are:

[0054] (1) Uniform mixing: Take various raw materials such as bentonite, quicklime, sepiolite powder, humic acid, chitosan according to the above weight percentage, mix the various raw materials, and stir evenly.

[0055] (2) Heating and drying: Place the uniformly mixed raw materials to dry at 65°C.

[0056] (3) Processing and grinding. After the mixture is dried, grind it so that more than 95% of the mixture can pass through a 100-mesh standard sieve to obtain the mercury-contaminated soil conditioner.

Embodiment 2-5

[0057] Embodiment 2-5: a kind of conditioner of mercury pollution remediation soil, it is made of following five kinds of raw materials of weight percent (unit: %):

[0058] Example 2 3 4 5 Bentonite 10 10 12 15 quicklime 40 30 30 34 meerschaum powder 12 18 20 10 humic acid 33 32 30 35 Chitosan 5 10 8 6

[0059] Example 2-5 The preparation method of the conditioner for mercury-contaminated remediation soil is the same as that of Example 1.

[0060] The plot test of the mercury-contaminated soil conditioner prepared by embodiment 1 is as follows:

[0061] A mercury-contaminated pepper planting base was divided into nine 2m×5m plots, 40 peppers were planted in each plot, and a 1-meter-wide protective row was set around the experimental area. The level of fertilization was exactly the same as other field management measures, and each treatment was completely consistent.

[0062] Treatment 1: blank (CK), conventional ...

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Abstract

The invention belongs to the field of farmland soil remediation, and particularly discloses a conditioner for mercury-contaminated soil remediation treatment, and a preparation method thereof, whereinthe conditioner is prepared from the following five raw materials by weight: 10-15% of bentonite, 30-40% of quick lime, 10-20% of sepiolite powder, 30-35% of humic acid and 5-10% of chitosan. According to the invention, the conditioner has characteristics of simple raw material composition, wide source, low price, simple preparation method and low repair cost, is suitable for large-area popularization, and can reduce the contents of mercury in various forms.

Description

technical field [0001] The invention belongs to the field of farmland soil remediation, and in particular relates to a conditioner for the remediation and treatment of mercury-contaminated soil and a preparation method thereof. Background technique [0002] Mercury is an environmental poison that seriously endangers human health. Mercury pollution has the characteristics of persistence, easy migration, high bioaccumulation, and strong toxicity. Any form of mercury in the environment can be converted into highly toxic mercury under certain conditions. Methylmercury, especially after entering the soil, directly threatens the health and safety of crops. According to the survey, my country's Guizhou, Jilin, Shaanxi, Hubei, Liaoning, Chongqing and other places have been polluted by mercury, among which Guizhou is the most serious, and some areas exceed the standard by as much as 50 times. [0003] At present, some medicaments for mercury-contaminated soil remediation have appear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K109/00
CPCC09K17/40C09K2109/00
Inventor 袁海伟胡露唐守寅熊琪田一君吴霄霄董帅厅
Owner 江苏康土生态科技有限公司
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