3. The adjustment, change of environment protection measures than statements Environmental impact assessment has been approved
3.1. Chemical decontamination:
Chemicals used in the decontamination process according to the EIA report Cyanide is a solution of hydrogen peroxide (H2O2). Over a period of use, the company found that there are some problems as follows:
3.1.1. Safety:
The following is a table comparing the safety of two chemical substances: a H2O2 is used before and two Na2S2O5 please change is to replace the use of H2O2 decontamination process Cyanide. According to the MSDS (Material safety data sheet) safety is as follows:
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