feed is introduced into the raw mask throughout the service cycle. This assures protection of the precoat layer while keeping the cake channels open ascontaminants are trapped. When properly proportioned, optimum efficiency is achieved whereby run times can be increased by 2 to 4 times under most conditions.The service cycle is terminated when a predetermined maximum pressure loss across the filter is reached. At this point, the system is put into a cleaning cycle.
In short, when a uniform and