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Soil pollution remediation composition and application thereof

A technology of soil pollution and composition, applied in the direction of restoration, application, and fertilizer mixture of polluted soil, which can solve the problems that bioremediation cannot be carried out

Active Publication Date: 2018-10-23
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is traditionally believed that oxidants will kill a large number of soil indigenous microorganisms, making subsequent bioremediation impossible

Method used

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  • Soil pollution remediation composition and application thereof
  • Soil pollution remediation composition and application thereof
  • Soil pollution remediation composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The pollutant is diesel-contaminated soil from a gas station in North China. Samples were taken to the laboratory, passed through a 2mm sieve and stirred evenly. After ultrasonic extraction with n-hexane, the TPH content measured by GC-FID was 17600mg / kg soil. In addition, the pH is about 7.8 and the CFU is 2.4E+05.

[0058] Dosage of the experimental group: the molar ratio of oxidant, ferrous sulfate, and citric acid is 5:1:1, and the molar ratio of sodium percarbonate and sodium persulfate as an oxidant is 1:4. The mass ratio of pollutant mass to sodium percarbonate is 1:20. Obtain pH, CFU, degradation rate as figure 1 , figure 2 with image 3 shown.

Embodiment 2

[0060] The molar ratio of oxidizing agent, ferrous sulfate and citric acid is 10:1:1, and the molar ratio of sodium percarbonate and sodium persulfate as oxidizing agent is 1:5. Other parameters and operation are identical with embodiment 1. Obtain pH, CFU, degradation rate as Figure 4 , Figure 5 with Image 6 shown.

Embodiment 3

[0062] The molar ratio of oxidizing agent, ferrous sulfate and citric acid is 10:5:5, and the molar ratio of sodium percarbonate and sodium persulfate as oxidizing agent is 1:7. Other parameters and operation are identical with embodiment 1. Obtain pH, CFU, degradation rate as Figure 7 , Figure 8 with Figure 9 shown.

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Abstract

The invention provides a soil pollution remediation composition and application thereof. The soil pollution remediation composition comprises the following components of sodium percarbonate, ferrous sulfate, citric acid and sodium persulfate, wherein the molar ratio of the ferrous sulfate to the citric acid is 1:1; the sodium percarbonate and the sodium persulfate are used as oxidants; the molar ratio of the citric acid to the oxidants is (1 to 5):10; the molar ratio of the sodium percarbonate to the sodium persulfate is 1:(5 to 10); at least the sodium percarbonate and sodium persulfate are individually packaged before use. The soil pollution remediation composition can be used for effectively remedying the polluted soil.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular, the invention relates to a soil pollution remediation composition and its application. Background technique [0002] Petroleum hydrocarbon-contaminated soil can be divided into crude oil-contaminated soil and refined oil-contaminated soil according to the components of pollutants. Crude oil contains saturated hydrocarbons, aromatic hydrocarbons, colloids and asphaltenes, with carbon chain lengths ranging from 6 to hundreds to thousands. Refined oil is a fraction of crude oil, such as gasoline and diesel, mainly C6-C28 saturated hydrocarbons and aromatic hydrocarbons. According to the current domestic environmental pollution investigation and corresponding detection methods, solvents such as n-hexane and methylene chloride are often used to extract organic matter in soil, and GC-FID is used to detect organic matter within the range of C6-C40 carbon chain length (mainly satur...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08C09K109/00
CPCB09C1/08C09K17/40C09K2109/00
Inventor 陈昌照陈宏坤刘玉龙张坤峰杜显元郑谨高春阳于文赫
Owner BC P INC CHINA NAT PETROLEUM CORP
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