Preparation process of metal peroxide and application in ecological restoration

Abstract

The invention discloses a preparation process of metal peroxide and application in ecological restoration, and relates to the technical field of environment protection. 0.01-2.5% (w / w) of inorganic phosphate ingredients are added in the production process of the metal peroxide or after the metal peroxide is prepared so as to form phosphorus-containing metallic oxide powder. On the basis of the phosphorus-containing metallic oxide powder, various auxiliary materials (surfactant, persulfate, bentonite, agricultural fertilizer and the like) can be added or granulized and formed, and farmlands, soil and underground water containing various organic pollutant compounds are subjected to in-situ or ex-situ restoration, so that harmless management is realized.

Description

Technical field: [0001] The invention relates to the technical field of environmental protection, in particular to a preparation process of a metal peroxide and its application in ecological restoration. Background technique: [0002] At present, there are many problems in the application of metal peroxides in farmland, soil or groundwater remediation: before being injected into the soil aquifer, metal peroxides will react with water to cause partial loss; at the same time, due to the powdery metal peroxides The large specific surface area will accelerate the reaction between metal peroxides and water. As a result, the dissolved oxygen content in groundwater increases rapidly, often far exceeding the solubility of oxygen in groundwater, causing excess oxygen to escape in the form of gas Into the unsaturated area of ​​the soil, the metal peroxides cannot be fully utilized and lost, and the metal peroxides will soon lose their role as an oxygen source in the process of groundw...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many problems in the application of metal peroxides in farmland, soil or groundwater remediation: before being injected into the soil aquifer, metal peroxides will react with water to cause partial loss; at the same time, due to the powdery metal peroxides The large specific surface area will accelerate the reaction between metal peroxides and water. As a result, the dissolved oxygen content in groundwater increases rapidly, often far exceeding the solubility of oxygen in groundwater, causing excess oxygen to escape in the form of gas Into the unsaturated soil area, resulting in the loss of metal peroxides that cannot be fully utilized, and metal peroxides will soon lose their role as an oxygen source in the process of groundwater bioremediation

At the same time, peroxide will cause the pH of the water body to increase significantly during the oxygen release process, resulting in the inhibition of microbial activity (the suitable pH range for microbial growth is 6.5-8.5), thus affecting the effective removal of pollutants