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Heavy Metal Farmland Soil Remediation Demonstration Project

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Treatment process: tailing sand solidification and stabilization + farmland phyto-remediation

Project scale: 8500 m3 trailing sand and 25 mu farmlands

Treatment effect: after the toxicity is leached through the sulfo-nitric process using properly-processed tailing sand, parameters measured are Cu<0.01mg/L, As<0.1mg/L, Cd<0.003mg/L, which all meet the III-class standard stipulated in Environmental Quality Standards for Surface Water; after remediation, the average measurements of Cu and As in the surface soil of the farmland are 49.12mg/kg and 3.91mg/kg respectively, which all meet the III-class standard stipulated in Environmental Quality Standard for Soils (GB15618-1995).

 

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