Method of leaching and repairing cadmium polluted coast saline soil

The invention discloses a leaching method for Cadmium Polluted coastal saline soil, which utilizes the calcium ion in the flue gas desulfurization to substitute the Cd in an exchange state in soil and transfers the dissolved Cd into lower layer of soil profile via freshwater leaching, then Cd is ren...

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Bibliographic Details
Main Authors LI QUSHENG, CHEN TENGYANG, TONG ZEJUN, FANG JIANHONG
Format Patent
LanguageChinese
English
Published 24.08.2011
Subjects
DISPOSAL OF SOLID WASTE
PERFORMING OPERATIONS
RECLAMATION OF CONTAMINATED SOIL
RECLAMATION OF CONTAMINED SOIL SOIL
TRANSPORTING
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Summary:The invention discloses a leaching method for Cadmium Polluted coastal saline soil, which utilizes the calcium ion in the flue gas desulfurization to substitute the Cd in an exchange state in soil and transfers the dissolved Cd into lower layer of soil profile via freshwater leaching, then Cd is renewedly absorbed by soil colloid at the lower layer, thereby achieving soil remediation from root and providing safety protection for planting the crop. The invention has the advantages of high pollutants removal rate and less time consumption, which can not only achieve treatment of polluted soil, but also provide a new application for the solid waste from the flue gas desulfurization.
Bibliography:Application Number: CN2008126052