ROLLED CHARGE FOR WASTE WATER PURIFICATION Russian patent published in 1994 - IPC

FIELD: biological purification of waste waters. SUBSTANCE: rolled charge comprises spirally rolled corrugated and plain bands, plain band being intended for separating layers of corrugated band. Corrugations of corrugated band are made in the form of rectangular channels arranged at an angle of 45 to 60 deg relative to longitudinal axis of band. Such drsign provides for circular motion of water being treated and considerably increases oxidizing power of charge. EFFECT: improved quality of treated water. 4 dwg