CARRIER COMPRISING ZEOLITE, SCORIA AND ION CHARGED MINERALS TO BIOLOGICALLY TREAT WASTEWATER AND WASTEWATER TREATMENT APPARATUS COMPRISING CARRIER DISPOSED IN MULTISTAGE AERATION TANK

摘要

PURPOSE: To provide a carrier having a granular structure constructed by bonding alkaline scoria usefully used as a carrier of living bodies, zeolite powder having high adsorption capability and mineral powder charged with anions to prevent acidification of zeolite using cement, and a wastewater treatment apparatus for effectively treating wastewater using the carrier. CONSTITUTION: The carrier for wastewater treatment comprises scoria, mineral powder charged with anions and zeolite powder, wherein the carrier is manufactured by a manufacturing method of carrier for wastewater treatment comprising the steps of: preparing a mixture by mixing zeolite powder, feldspar powder and liquid phase binder, adhering the mixture to scoria by spraying the mixture onto scoria while agitating scoria, and firing a resulting material by putting the mixture into an oven of 150 to 300 deg.C in the state that the surface of the mixture is dried and heating the mixture after sufficiently mixing and agitating scoria and the mixture. The wastewater treatment apparatus is characterized in that wastewater is treated by continuously forming activated sludge layers(70) at water inlet ports(80) of aeration tanks(20,30,40) and filling the carrier in the activated sludge layers.