T/QHNX 030-2022 High-altitude farmland soil arsenic and cadmium agricultural remediation technical regulations

Scope

Scope: This document specifies the terms and definitions of arsenic and cadmium agricultural remediation technologies for agricultural cultivated land, the applicable arsenic and cadmium content ranges in cultivated land, remediation targets, remediation parameters, determination of remediation status, selection of agricultural remediation technologies, and evaluation of remediation effects. This document is applicable to the implementation of arsenic and cadmium agricultural remediation technologies for agricultural cultivated land above an altitude of 2000m. Main technical contents: 3.5 Soil remediation utilizes physical, chemical, and biological methods to fix, transfer, absorb, and transform pollutants in the soil, reducing their content to target levels. 3.6 Agricultural remediation reduces soil pollutants through agricultural production as a technical means. 3.7 Evaluation of remediation effects comprehensively assesses whether the soil remediation meets the specified requirements through data analysis, on-site inspections, sampling, and laboratory testing. 4. Applicable arsenic and cadmium content ranges in cultivated land 4.1 Applicable to one-year cropping cultivated land with arsenic concentrations exceeding 20 mg/kg or cadmium concentrations exceeding 0.30 mg/kg in the top 20 cm of soil that require remediation. 4.2 Applicable to newly reclaimed agricultural wasteland with arsenic concentrations exceeding 20 mg/kg or cadmium concentrations exceeding 0.30 mg/kg in the soil.

Development Information

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