Micro Rotary Drum Filters for Sewage Treatment The micro rotary drum filters is a drum type sieve filtration device. The treated wastewater enters the drum along the axial direction and flows out through the sieve in a radial radiation pattern. Impurities (such as fine suspended solids, fibers, pulp, etc.) in the water are intercepted on the inner surface of the filter on the drum. When impurities trapped on the filter are carried to the upper part by the drum, they are backwashed by pressure flushing water into the slag discharge tank and flow out. This device is developed for the existing micro filter machines that are easy to block, damage, large maintenance workload, and large secondary investment. It is one of the best pr…