一种镉污染农田修复方法

By treating cadmium-contaminated farmland in layers and blocks, and using buffer soil layers to isolate the pollution, efficient remediation of cadmium-contaminated farmland has been achieved. This solves the problems of large workload and secondary pollution in existing technologies, and is both feasible and economical.

CN119549518BActive Publication Date: 2026-07-17HENAN PROVINCE LAND SPACE SURVEY PLANNING INSTITUTE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN PROVINCE LAND SPACE SURVEY PLANNING INSTITUTE
Filing Date
2024-11-05
Publication Date
2026-07-17

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Abstract

本发明公开了一种镉污染农田修复方法，涉及土壤污染治理及环境修复技术领域，主要包括以下步骤S1：将镉污染地块分成多个操作地块；S2：将任一所述操作地块根据镉含量从上到下分为不小于三层的分层土壤，第一层土壤为镉污染土壤，最末层土壤为清洁土壤，中间土壤为缓冲层土壤；S3：将第一块所述操作地块的多层土壤依次挖出形成坑槽，并将多层所述土壤分别存放；S4：将下一块所述操作地块的多层土壤依次挖出形成坑槽，并将多层所述土壤倒置回填入上一块所述操作地块的坑槽内；S5：重复所述步骤S4，直至全部所述操作地块回填完成。本发明具有可操作性强、无二次污染、经济高效的优点，能够较彻底的解决地块镉污染的问题，工作量较小。
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