Division Description

Maintaining the pH of effluents containing sulphide from the beamhouse above 9,5 until the sulphide has been treated (on or off site) by one of the following techniques:

1. (i)

   catalytic oxidation (using manganese salts as a catalyst);

2. (ii)

   biological oxidation;

3. (iii)

   precipitation; or

4. (iv)

   by mixing in an enclosed vessel system fitted with an exhaust scrubber or a carbon filter.