Persulfate slow-release material used for permeable reactive barrier and preparation method thereof

Abstract

The invention relates to a persulfate slow-release material used for a permeable reactive barrier, which is granular and comprises an active oxidizing agent, a stabilizing, curing and binding agent, zeolite and water, and the mass ratio of active oxidizing agent to stabilizing, curing and binding agent to zeolite to water is 1:1.4-1.7:0.5-0.7:0.9-1.2. The invention also discloses a method for preparing the persulfate slow-release material. With the persulfate slow-release material provided by the invention, the dissolution speed of oxidizing solid granules namely persulfate in the permeable reactive barrier can be obviously reduced, and the service life of the permeable reactive barrier can be further prolonged.

Description

technical field

[0001] The invention belongs to the field of groundwater pollution restoration in the field of environmental protection, and in particular relates to a persulfate slow-release material used for treating organic pollutants in a permeable reaction wall.

[0002] The present invention also relates to a preparation method of the above-mentioned persulfate slow-release material. Background technique

[0003] Organic pollution of groundwater has caused huge health risks to the public, and has attracted the attention of some national governments. According to surveys, more than 130 organic pollutants have been detected in groundwater in some areas of my country, especially in oil extraction, processing, storage and sales. During the process, pollutants such as petroleum hydrocarbons, polycyclic aromatic hydrocarbons, benzene series, and chlorinated organic solvents enter the groundwater due to the leakage of petroleum and its products, causing groundwater pollution a...