Biological Treatment of Leachate using Sequencing Batch Reactor

Abstract

Rapid urbanization and industrialization changed the characteristics of solid waste generated and leads to severe environmental problems. Solid waste disposed of in landfills will go through several stages of decomposition, will eventually result in the liquid at the bottom of the landfill leachate. Now days, according to the increasingly restrictive limits for wastewater discharge, complicated and costly treatment facilities are imposed. This research will examined the performance of Sequencing Batch Reactor (SBR) on removal of suspended solid (SS), turbidity, chemical oxygen demand (COD), ammonia-nitrogen, total nitrogen (TN), and total phosphorus (TP). The variables are reaction time in differences condition (anaerobic, anoxic, and aerobic). Then, follow by combination of difference steps consisting anaerobic/ anoxic/ aerobic in order to achieve maximum removal. The characteristic of Pasir Gudang, Johor's landfill leachate is pH, turbidity, BOD, COD, suspended solid, colour, ammonia nitrogen, total phosphorous, total nitrogen, total organic carbon, tannin and lignin, and sulfate, 8.06, 841 NTU, 2107 mg/L, 6000 mg/L, 576 mg/L, 1050 ADMI, 50.638 mg/L, 24 mg/L, 700 mg/L, 185 mg/L, 17 mg/L, 1005 mg/L. The expected outcomes parameter of suspended solid (SS), turbidity, chemical oxygen demand (COD), ammonia-nitrogen, total nitrogen (TN), and total phosphorus (TP) from leachate which is 80%, 80%, 90%, 76%,80%, and 70% respectively.