MBBR is one of the most widely used aerobic type sewage treatment technique. Sewage is collected & fed to a reactor consisting of PP media under the influence of air supplied at the bottom of the reactor tank. The aerobic bacteria present in the reactor consume the organic part of the sewage thereby reducing the oxygen demand. The sewage is further passed through tube settler to facilitate solid liquid separation. Clarified water is collected, disinfected & filtered with PSF & ACF.