A phosphogypsum-based desertification soil improver and a preparation and application method thereof

The preparation and application of phosphogypsum-based desert soil conditioners have solved the problems of land occupation and environmental pollution caused by phosphogypsum storage, improved the structure of desert soil, realized the resource utilization of phosphogypsum and the ecological restoration of desert soil, and enhanced soil fertility and plant survival rate.

CN122445362APending Publication Date: 2026-07-24SICHUAN ZHENGSHENG ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN ZHENGSHENG ENVIRONMENTAL PROTECTION TECH CO LTD
Filing Date
2026-04-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively treat phosphogypsum, resulting in its stockpiling occupying land resources, increasing disposal costs, and posing risks of soluble phosphorus, fluorine, and heavy metal pollution. In addition, desertified soils have loose structures and poor water and fertilizer retention capacity, making permanent ecological restoration difficult.

Method used

A phosphogypsum-based desert soil conditioner is used. Through the synergistic effect of pretreated phosphogypsum powder, humic acid/biochar, calcium-based bentonite, decomposed straw powder, activated trace element liquid, and compound microbial agent, a stable water-stable granular structure is formed, which improves the soil's water and fertilizer retention capacity. Furthermore, the availability of trace elements is enhanced by chelating trace elements with disodium EDTA.

Benefits of technology

It has enabled the large-scale disposal of phosphogypsum and the efficient remediation of desertified soil, reducing environmental risks, improving soil fertility and plant survival rate, and forming a stable soil micro-ecological structure suitable for the growth of psammophytes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122445362A_ABST
    Figure CN122445362A_ABST
Patent Text Reader

Abstract

The application discloses a phosphogypsum-based desertification soil modifier and a preparation and application method thereof, and belongs to the technical field of soil modifiers. The preparation method of the modifier comprises the following steps: washing and pH regulator adjusting of phosphogypsum to obtain pretreated phosphogypsum; mixing the pretreated phosphogypsum, humic acid and / or biochar, calcium-based bentonite powder, rotten straw and the like, spraying an activated trace element liquid obtained by chelation of EDTA disodium salt and metal inorganic salt, and then atomizing and granulating the activated trace element liquid through a bonding water-retaining agent, and then low-temperature drying, cooling, and spraying of composite microorganism bacteria. The modifier has high environmental safety and strong wind erosion resistance, can significantly reduce soil bulk density, improve field water holding capacity and organic matter content, and significantly improve the survival rate of psammophyte, and is suitable for industrialized large-scale production and desertification treatment popularization.
Need to check novelty before this filing date? Find Prior Art