Method for removing chlorobenzene from underground water through nanosolid superbase-activated sodium persulfate

Abstract

The invention discloses a method for removing chlorobenzene from underground water through nanosolid superbase-activated sodium persulfate. The method concretely comprises the following steps: feeding a nanosolid superbase activator and sodium persulfate into chlorobenzene-polluted underground water so as to conduct oxidization reaction, thus realizing the restoration of the chlorobenzene-polluted underground water. The prepared nanoscale solid superbase can enable aquifer media to fast, effectively and uniformly to achieve a strong basic environment, so that not only can the basic activation condition be continuously maintained, but also sulfate free radical (SO4<->) and hydroxyl free radical (OH) which have strong oxidative activity can be achieved through base-activated sodium persulfate so as to reach the obvious oxidization treatment effect on the chlorobenzene in the underground water, and the oxidization products have no secondary pollution on the underground water. The nanosolid superbase activator not only is low in the cost of raw materials, and environment-friendly, but also is simple and convenient in manufacturing process.

Description

technical field

[0001] The invention belongs to the technical field of in-situ chemical oxidation in the field of groundwater pollution restoration and treatment. Specifically, the invention relates to a method for removing chlorobenzene in groundwater by using sodium persulfate activated by nanometer solid superalkali. Background technique

[0002] Groundwater is an important fresh water resource, and 61% of cities in the country use groundwater as a source of drinking water. In recent years, due to human factors such as industrial development, the quality of groundwater in some areas has deteriorated seriously. Chlorobenzene (C 6 h 5 Cl), as the simplest chlorinated aromatic hydrocarbon, is an important chemical raw material and organic solvent, and is widely used in industries such as chemical industry and printing. Chlorobenzene is one of the most common groundwater organics due to leaks caused by operator error and improper disposal of waste liquids. Moreover, chlor...