A compound treatment agent for synergistic restoration of soil nitrobenzene pollution

Abstract

The invention relates to a compound treatment agent for synergistically repairing soil nitrobenzene pollution. The method is firstly to place the self-made soil polluted by nitrobenzene into a mixed solution of 95% ethanol and ethylene glycol butyl ether for treatment. Pretreatment (the soil is completely submerged in the mixed solution), after standing for 30 minutes, filter, and the contaminated soil is ready for use, and then self-made 0.8-1.0g / L activated carbon slurry, quaternary ammonium salt cationic surfactant, Polyacrylamide, ethanol, ethylene glycol butyl ether and deionized water are fully stirred evenly, and finally the above-mentioned composite treatment agent is used for adsorption and synergistic elution repair of the self-made nitrobenzene-contaminated soil. The invention is convenient to operate, economical and practical, relatively environmentally friendly and safe, and especially has better synergistic repairing effect on soil polluted by nitrobenzene.

Description

technical field [0001] The invention belongs to the technical field of soil synergistic restoration, in particular to the technical field of synergistic restoration treatment of p-nitrobenzene soil pollution. Background technique [0002] With the continuous development of the national economy and the development of the chemical industry, environmental problems are becoming more and more serious, especially soil and water pollution are most closely related to people's daily life. Soil pollution has caused serious damage to people's life, diet and other aspects. influences. In soil pollution, relatively hydrophobic organic compounds are the main ones. Due to the characteristics of this type of organic compounds, they are easy to adsorb and not easy to be removed in soil pollution, which brings serious difficulties to soil pollution control. . Among the many hydrophobic organic compounds, nitrobenzene is the most serious soil pollution. [0003] Nitrobenzene is an important...

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Problems solved by technology

[0004] In order to solve the above problems and reduce the impact of nitrobenzene on soil pollution, people have also made a certain breakthrough in this research, using surfactant synergistic repair technology to treat soil pollution, but in this type of treatment, often A single surfactant synergistic repair technology is adopted. Although the single surfactant synergistic repair technology also reduces the impact of nitrobenzene on soil pollution to a certain extent, the effect is limited. In view of this, people have adopted a compound type Surfactant solution mainly adopts two methods of anionic-nonionic surfactant and cationic-nonionic surfactant solution. These two kinds of compound surfactant solutions have little difference in the effect of treating nitrobenzene soil pollution , the treatment effect has been improved a lot compared with the single surfactant synergistic repair treatment technology, but there is still a lot of room for improvement in the degree of p-nitrobenzene soil treatment

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