DRUM SCREEN FOR WASTEWATER TREATMENT AND ADVANCE TREATMENT EQUIPMENT FOR FILTERING PHOSPHORUS SLUDGE AND FINE IMPURITIES IN SEWAGE WATER

摘要

PURPOSE: A wedge type drum screen device, advanced sewage and wastewater treating apparatus for treating phosphorus concentrated sludge and fine impurities using the same, and a method for the same are provided to increase the filtering efficiency of sludge and to prevent the clogging phenomenon of pores of a drum screen due to the sludge. CONSTITUTION: A wedge type drum screen device(300) includes a drum screen(310), a feed water inlet(330), a sludge inlet(350), a sludge separator(370), a sludge outlet(380), and a filtered water outlet(390). The feed water inlet supplies feed water to the outer circumference of the drum screen. The sludge inlet is spaced apart from the feed water inlet in order to supply phosphorus concentrated sludge to the outer circumference of the drums screen. The sludge separator separates sludge from the surface of the drum screen. Fine impurities contained in the feed water are filtered through the pores of the drum screen. A fine impurity layer is formed on the outer circumference of the drum screen. The phosphorus concentrated sludge is filtered using the fine pores of the fine impurity layer.