The FSM Filter Screen was developed to solve modern day screening problems which occur in wastewater pretreatment. Following a successful test phase, the ﬁrst system was installed in 1987. Since that time more than 1,500 units have been installed worldwide with over 350 in the USA. The FSM Filter Screen is characterized by its sturdy construction and operational reliability.
The FSM Filter Screen eliminates operational disruptions caused by ﬁbrous and other inorganic material. Depending on the perforated panel, the screened material is 3 to 5 times greater compared to a bar screen with an opening of 20 mm. Up to 60% of the ﬂoating matter and fats are removed. The quality of the screened efﬂuent is noticeably improved, which in turn improves sludge treatment and has favorable consequences for subsequent agricultural use.
Principle of Operation
Wastewater ﬂows through perforated ﬁlter elements while contaminants are captured on the face of the element. Larger objects, such as sticks, rocks, bottles, etc, are picked up from the bottom of the channel by the lifting tines at the bottom of every ﬁfth element. The ﬁlter panels form a continuous belt which transports the screenings to the discharge point where they are cleaned from the panels by a rotating brush. The screenings are then discharged into a dumpster, conveyor, or compactor.
- High reliability
- No need for upstream coarse screening
- Low maintenance costs
- Easily adapted to suit modiﬁed operating conditions