Item | Limit (mg/L) | Langwoqu mine | Shenyuan mine | ||
Test value (mg/L) | Result | Test value (mg/L) | Result | ||
Hg | 0.001 | <0.001 | Normal | <0.001 | Normal |
As | 0.05 | <0.02 | Normal | <0.02 | Normal |
Cr6+ | 0.05 | 0.02 | Normal | 0.03 | Normal |
Volatile phenol | 0.002 | 0.003 | Above standard | 0.003 | Above standard |
Cyanide | 0.05 | <0.002 | Normal | <0.002 | Normal |