An Industrial Effluent Treatment system is installed within the plant to treat wastewater generated by the recovery processes. It is designed to treat the wastewater to comply with the Standard A of the Environmental Quality (Industrial Effluent) Regulations 2009.

The wastewaters will be collected in a water sump and pumped to an Equalization tank to homogenize the wastewater. The homogenized wastewater will then be pumped to the DAF tank where we will do the dosing of coagulant and flocculent to remove colloidal matters, suspended solids and heavy metals present in the wastewater. The chemically treated wastewater will flow into the aeration tanks for Biological treatment. 98 % of BOD and COD will be removed in the aeration process. In aeration tanks, microorganisms will use the organic matters in the wastewater as a food supply and convert them into biological cells or biomass. Once the reaction has taken place, the wastewater will be channeled to a clarifier in order for the biomass to settle in as sludge. The supernatant (wastewater after settling) will be filtered using sand filter followed by carbon filter before final discharge. The sludge will be collected in a sludge holding tank and channeled to a filter press for dewatering.