Treatment process of the new sulfide method

Treatment equipment of new sulfide method (NS process) is different from that of hydroxide precipitation method in the following points.

  • The top of reaction tank, coagulation tank and precipitation tank is covered and the exhausting duct is installed.
  • Small scrubber is attached to exhausting system.
  • Hydrogen sulfide detecting monitor is installed.
  • Tank for sulfidizing agent and chemical feeding pump are installed.

Basic flow is not different from that of conventional method. So, it is possible to remodel the equipment now in operation. Flow of treatment by NS process is shown below.

Batch type

Batch typ

Continuous type

Continuous type
Technology to recover metal in waste water