Composite soil repair agent comprising microorganisms as well as preparation method and application thereof

Abstract

The invention discloses a composite soil repair agent comprising microorganisms as well as a preparation method and application thereof. The composite soil repair agent comprises a porous carrier anda composite microbial agent loaded in the porous carrier, wherein the porous carrier comprises charcoal, calcium carbonate and diatomite, and the composite microbial agent comprises bacillus subtilis,iron-reducing bacteria, lactobacillus, aspergillus oryzae and vulcanized bacteria. The preparation method comprises the following steps: S1, mixing fermentation solutions of various microorganisms contained in the composite microbial agent to obtain a composite microorganism bacterial solution; S2, mixing the diatomite, calcium carbonate and charcoal in water, adding the composite microorganism bacterial solution, and uniformly mixing to obtain a dispersion solution; and S3, dropwise adding the dispersion solution into a magnesium sulfate solution, generating spherical particle precipitates,centrifugally separating the spherical particle precipitates, dropwise adding an acid solution into the separated spherical particle precipitates until no bubble is generated, washing with water to obtain a solid substance, and centrifugally drying to obtain the composite soil repair agent.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a composite soil remediation agent containing microorganisms and a preparation method and application thereof. Background technique [0002] In recent years, with the rapid development of social economy, the problem of soil pollution has become more and more serious. Soil pollution has become a common environmental problem and has attracted more and more attention. For soil pollution problems, physical, chemical or biological remediation techniques are usually used for remediation. Among them, physical restoration mainly uses electromigration or electroosmotic flow to remove pollutants from the soil, or uses electric heating to desorb pollutants from soil particles. This kind of restoration method relies heavily on electric energy, and the cost is low. High, and limited by the solubility and volatility of pollutants, the scope of application is limited. Chemica...

AI Technical Summary

Problems solved by technology

Among them, physical restoration mainly uses electromigration or electroosmotic flow to remove pollutants from the soil, or uses electric heating to desorb pollutants from soil particles. This kind of restoration method relies heavily on electric energy, and the cost is low. High, and limited by the solubility and volatility of pollutants, the scope of application is limited