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Selenium polluted soil stabilizer and preparation method thereof

A soil solidifying agent and selenium pollution technology, applied in the field of soil remediation, can solve problems such as poisoning, soil pollution, gastrointestinal dysfunction, etc., and achieve the effects of extensive social benefits, simple preparation method and good economic benefits

Inactive Publication Date: 2018-02-16
阳艳华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the body absorbs too much selenium, it will lead to poisoning and cause gastrointestinal disorders.
In addition, selenium will also cause certain pollution to the air, water, and soil.

Method used

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  • Selenium polluted soil stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The solidifying agent for selenium-contaminated soil in this embodiment is made of the following raw materials: 10 kg of corn stalks, 10 kg of aluminum octenyl succinate starch, 5 kg of glucose, 15 kg of sodium succinate, 5 kg of peanut meal and 20 kg of disodium hydrogen phosphate.

[0023] The preparation method of above-mentioned selenium polluted soil solidifying agent, comprises the steps:

[0024] (1) Take corn stalks and peanut meal and pulverize them to 300 mesh respectively to obtain corn stalk powder and peanut meal powder;

[0025] (2) Heat aluminum octenyl succinate starch, glucose, sodium succinate, disodium hydrogen phosphate, corn stalk powder and peanut meal powder to 50°C, and then perform ultrasonic treatment with a power of 100w and a frequency of 30khz, the time is 15min, the mixed solution is obtained, dried at a low temperature of 10°C, and then packaged to obtain the selenium-contaminated soil curing agent.

Embodiment 2

[0027] The solidifying agent for selenium-contaminated soil of this embodiment is made of the following raw materials: 20 kg of corn stalks, 6 kg of aluminum octenyl succinate starch, 10 kg of glucose, 10 kg of sodium succinate, 10 kg of peanut meal and 15 kg of disodium hydrogen phosphate.

[0028] The preparation method of above-mentioned selenium polluted soil solidifying agent, comprises the steps:

[0029] (1) Take corn stalks and peanut meal and grind them to 400 mesh respectively to obtain corn stalk powder and peanut meal powder;

[0030] (2) Heat aluminum octenyl succinate starch, glucose, sodium succinate, disodium hydrogen phosphate, corn stalk powder and peanut meal powder to 55°C, and then perform ultrasonic treatment with a power of 130w and a frequency of 25khz, the time is 16min, the mixed solution is obtained, dried at 10°C at low temperature, and then packaged to obtain the selenium-contaminated soil curing agent.

Embodiment 3

[0032] The solidifying agent for selenium-contaminated soil in this embodiment is made of the following raw materials: 30 kg of corn stalks, 2 kg of aluminum octenyl succinate starch, 15 kg of glucose, 5 kg of sodium succinate, 15 kg of peanut meal and 10 kg of disodium hydrogen phosphate.

[0033] The preparation method of above-mentioned selenium polluted soil solidifying agent, comprises the steps:

[0034] (1) Take corn stalks and peanut meal and grind them to 500 mesh respectively to obtain corn stalk powder and peanut meal powder;

[0035] (2) Heat aluminum octenyl succinate starch, glucose, sodium succinate, disodium hydrogen phosphate, corn stalk powder and peanut meal powder to 60°C, and then perform ultrasonic treatment with a power of 160w and a frequency of 20khz, the time is 15min, the mixed solution is obtained, dried at 10°C at low temperature, and then packaged to obtain the selenium-contaminated soil curing agent.

[0036] The solidifying agent for selenium-c...

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Abstract

The invention belongs to the technical field of soil remediation and discloses a selenium polluted soil stabilizer and a preparation method thereof. The selenium polluted soil stabilizer is prepared from, by weight, 10-30 parts of cornstalk, 2-10 parts of aluminum starch octenylsuccinate, 5-15 parts of glucose, 5-15 parts of sodium succinate, 5-15 parts of peanut meal and 10-20 parts of sodium hydrogen phosphate. The selenium polluted soil stabilizer is high in treatment capacity and free of secondary pollution, the concentration of selenium in repaired selenium polluted soil is decreased to 3mg / kg or below and meets the requirement of the notational second-level soil quality standard, and high economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to a solidifying agent for selenium polluted soil and a preparation method thereof, belonging to the technical field of soil remediation. Background technique [0002] Soil heavy metal pollution refers to human activities, the content of trace metal elements in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. Heavy metal pollution in farmland soil is extremely harmful. Heavy metal pollution in soil will not only reduce crop yield and quality, but also enter the human body through the soil-plant system and the food chain, endangering human health and life safety. Soil heavy metal pollution has the characteristics of concealment, hazard lag, long-term nature, and bioaccumulation of heavy metals in the biological chain. These determine that if the understanding and treatment of soil heavy metal pollution are delayed, it will brin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 阳艳华
Owner 阳艳华
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