Penentuan Kadar Fosfat dan COD pada Proses Pengolahan Air Limbah PT Sinar Oleochemical International (PT Soci)

Abstract

COD (Chemical Oxigen Demand) is measure for water pollution by organic matters which naturally can be oxidised through microbiology processes,And result the less of dissolved oxygens in water. Analysis COD based on most of all organic material can be oxidised to become carbondioksida and water,the constructively k2Cr2O7 in acid solution.From analysis,COD concentrate at waste water at PT.SOCI is between 20 mg/L-38 mg/L.Phosfat is one the molecul that found in waste water.The measurement of phosfat concentrate in the waste water, function to prevent the hight of phosfat concentrate.The phosfat concentrate in the waste water was analysis by ascorbic acid methods using spectrophotometer at wave light 880 nm.From the analysis,phosfat concentrate at waste water in PT.SOCI is between 0,30 mg/L – 1,08 mg/L.Base on the standart of waste water,COD concentrate is 200 mg/L dan phosfat concentrate is 2 mg/L,so waste water at PT.SOCI still fulfill the standart of waste water.