Abandoned biomass-based arable soil remediation modifier and preparation method thereof

By using a soil remediation modifier based on waste biomass, combined with modified biomass, gel materials, and microbial agents, the multiple pollution problems of arable land soil have been solved, achieving soil structure improvement and heavy metal fixation, and enhancing the physical and chemical properties of the soil.

CN121991697APending Publication Date: 2026-05-08SHAANXI INST OF BIOLOGICAL AGRI +1
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Patent Information

Application Number
CN202610031107.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-12
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Farmland soils face problems such as soil acidification, salinization, decline in organic matter, and heavy metal pollution. Existing remediation technologies are costly, pose a risk of secondary pollution, and have unsustainable effects. Single technologies are insufficient to address complex pollution.

Method used

Soil remediation amendments based on waste biomass are used. By combining modified biomass, gel materials, microbial agents and organic fertilizers, an amendment with a rigid-flexible structure is prepared. The porous structure of modified biomass and the adsorption capacity of gel materials, combined with the activity of microbial agents, improve the physical and chemical properties of the soil.

Benefits of technology

It significantly increases the organic carbon content of the soil, improves soil aggregate structure, enhances the soil's water and fertilizer retention capacity, fixes heavy metals, reduces the bioavailability of heavy metals, reduces soil compaction, promotes microbial activity, and achieves long-term soil remediation effects.

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Abstract

The invention relates to the technical field of soil remediation, in particular to a cultivated land soil remediation modifier based on waste biomass and a preparation method thereof.The cultivated land soil remediation modifier comprises, by mass, 5-10% of modified biomass, 5-10% of waste biomass and the balance water. 1-5% of a microbial agent; 1-5% of a gel material; 10 to 20% of bentonite; the balance of organic fertilizer; the preparation method comprises the following steps: S1, preparing the rigid matrix; s2, preparing flexible slurry; s3, preparing a cultivated land soil remediation modifier; according to the arable soil remediation modifier, the modified biomass and the bentonite are used as rigid matrixes, the gel material, the microbial agent and the organic fertilizer are used as flexible slurry, and the rigid matrixes are beneficial for breaking hardening and increasing pores; the flexible slurry improves the water retention capacity, can prevent particles from loosening and collapsing in soil when encountering water, and prolongs the action time of the cultivated land soil remediation modifier.
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