Patent ID: 6423216
Filing Date: 2002-07-23
Classification: C02F,Y02W

Abstract:
A biological oxidation filter system, comprising:a biological contact filter unit for receiving a filter medium filtering particulate matter in water and providing a growth environment to a microbial flora, introducing water at an upper side thereof, and filtering and contacting the water to the microbial flora; a collection unit for supporting the filter medium in the biological contact filter unit, and collecting the water from the filter medium; a filtrate outflow unit for externally discharging the water collected in the collection unit; and an oxidation air supply unit for increasing dissolved oxygen for the growth environment of the microbial flora in the filter medium, and simultaneously supplying oxidation air between the filter medium and the collection unit in order to blow the oxidation air to the water passing through the filter medium, said oxidation air supply unit further comprising: an air circulation pipe placed in order to circulate air through a whole region between the filter medium and the collection unit; a plurality of block piping systems connected respectively to the air circulation pipe at predetermined intervals, and disposed in order to distribute air more uniformly to the whole region; and an oxidation air injector including a plurality of oxidation air nozzles connected to the block piping system at predetermined intervals.