Penentuan Chemical Oxygen Demand (COD) Limbah Cair Pulp dengan Metode Spektrofotometri Visible di PT. Toba Pulp Lestari, Tbk

Abstract

Determination Chemical Oxygen Demand (COD) of waste water pulp at PT. Toba Pulp Lestari have been done determined spectrofotometri visible. Measured do at the wavelength 600 nanometer for sample from Inlet Primary Clarifier and at the wavelength 520 nanometer for sample from Outlet Secondary Clarifier. The result obtained show that COD of waste water pulp in Inlet Primary Clarifier 500,2 mg/liter; Outlet Primary Clarifier 439,1 mg/liter; and Outlet Secondary Clarifier 68,92 mg/liter. From result COD show that waste water’s PT. Toba Pulp Lestari still fulfilling the quality standard government and industrial.