1. Rotary disc filter components: It includes a raw water receiving device, a central water inlet and distribution device, filter discs, a drive unit, a backwash device (including a backwash pump and spray system), a sludge removal system, a liquid level tank, and supporting liquid level instrumentation and control systems.
2. Working Principle of a Rotary Disc Filter: A fiber rotary disc filter consists of a central drum, a rotating disc, a backwash system, and a supporting electrical control system. The rotating disc is fixed around the central drum and has connecting holes. Raw water (wastewater) flows into the drum through an opening at one end and enters each rotating disc through the connecting holes. Filter cloths are installed on both sides of the rotating disc. The filter cloths are woven from stainless steel or polyester yarns and have a pore size as small as 10 μm.
3. Features of Rotary Disc Filters
① Rugged and compact design with a long service life. Generally made of 304 or 316L stainless steel.
② Small footprint (suitable for upgrades and renovations), with a footprint 75% smaller than sand filters.
③ Simple design, minimal head loss, and significantly reduced energy consumption.
④ Simple operation and maintenance, fully automatic operation, requiring no dedicated personnel.
⑤ Both initial investment and operating costs are significantly lower than other processes.
⑥ Stable effluent quality.
