A heavy metal pollution control method and system based on fulvic acid type potassium sulfate

By calculating the spreading amount of fulvic acid-type potassium sulfate fertilizer and soil nutrient regulation, the problem of inaccurate spreading amount of fulvic acid-type potassium sulfate in the control of soil heavy metal pollution was solved, effective control of heavy metal pollution and soil nutrient balance were achieved, and the stability of the soil environment was improved.

CN120347054BActive Publication Date: 2025-10-17SDIC (SICHUAN) AGRI TECH CO LTD +1
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Patent Information

Application Number
CN202510825044.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-06-19
Publication Date
2025-10-17
Estimated Expiration
2045-06-19

AI Technical Summary

Technical Problem

Existing methods for controlling heavy metal pollution in soil using humic acid-type potassium sulfate cannot accurately determine the amount of fertilizer applied, leading to incomplete complexation of heavy metal ions or inappropriate potassium sulfate content, which affects crop growth and the soil environment.

Method used

By obtaining the types, contents and complexation ratios of heavy metal ions in the soil, the required amount of fulvic acid-type potassium sulfate fertilizer is calculated, and multiple cycles of adjustments are performed in combination with complexation balance and risk screening values ​​to ensure that heavy metal ions are effectively complexed and soil nutrients are balanced.

Benefits of technology

It achieves effective control of heavy metal pollution and soil nutrient balance, avoids the impact of improper potassium sulfate content on crop growth, and improves the stability of the soil environment and the heavy metal control effect.

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Abstract

The present application belongs to the technical field of environmental protection, and relates to a heavy metal pollution control method and system based on fulvic acid type potassium sulfate. First, the types and contents of heavy metal ions in the soil and the complexing ratio with fulvic acid are obtained, the amount of fulvic acid required for complete complexing is calculated, the spreading amount is determined in combination with the content of fulvic acid in the fulvic acid type potassium sulfate fertilizer, after the fertilizer is uniformly spread, a heavy metal ion complexing reaction curve is drawn, the pollution risk is judged according to the residual amount after the reaction reaches equilibrium, and if the standard is exceeded, the demand amount of fulvic acid is recalculated and the spreading amount is adjusted. The present application can effectively complex heavy metal ions in the soil, reduce the activity and biological effectiveness of the heavy metal ions, and reduce the harm to crops; at the same time, in the process of controlling heavy metal pollution, the soil nutrients are adjusted according to the crop demand, the soil fertility is improved, and the healthy growth of crops is ensured.
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