Metal peroxide-based oxygen slow release composite material and preparation thereof

Abstract

The invention relates to the technical field of polluted groundwater bioremediation, in particular to a metal peroxide base oxygen slow-release composite material and a preparation method thereof. 40 percent to 60 percent of the metal peroxide, 20 percent to 50 percent of calcium phosphate cement, 1 percent to 3 percent of anhydrous calcium sulfate and 5 percent to 10 percent of clay are mixed evenly and added with water, then sent to a granulator for granulation; the obtained solid particles are soaked into the acrylic-itaconic acid copolymer liquid for 1 to 3 minutes and taken out, wherein,the mass ratio of the solid particles and the acrylic-itaconic acid copolymer liquid is 1:3-1:10, then drying and solidification are carried out at 18 to 25 DEG C, and then the metal peroxide base oxygen slow-release composite material is obtained. When in the polluted groundwater rehabilitation, the composite material can greatly slow the reaction rate of the metal peroxide and water, reduce unnecessary loss of the metal peroxide, and improve the service efficiency and period of the metal peroxide.

Description

technical field

[0001] The invention relates to the technical field of bioremediation of polluted groundwater, in particular to a metal peroxide-based oxygen slow-release composite material and a preparation method. Background technique

[0002] Among the three types of groundwater pollution, namely organic pollution, heavy metal pollution and radioactive pollution, organic pollution has surpassed heavy metal pollution and radioactive pollution and has become the main source of groundwater pollution. The use of microbial metabolism to degrade organic pollutants in groundwater has become a hotspot in the research of contaminated groundwater remediation technology due to its advantages of low cost, low environmental impact, strong decontamination ability, and can be used in combination with other technologies. Under natural conditions, due to the lack of dissolved oxygen in groundwater, the aerobic degradation efficiency of microorganisms on organic pollutants will be reduced....