WATER TREATING METHOD BY BATCH TYPE ACTIVATED SLUDGE AND APPARATUS FOR TREATING WATER

摘要

PURPOSE:To improve treating efficiency by increasing sludge holding volume in a tank of small size. CONSTITUTION:In a water-treating method for purifying water using an activated sludge in which processes of inflow, aeration, precipitation and discharge are carried out in order in a reaction tank 1, a carrier for fluidized bed 4, 4 and 4 consisting of a sponge, a plastic or a ceramic, etc., is provided in the reaction tank 1 and the activated sludge is allowed to attach to the surface of the carrier to increase a sludge holding volume.