The Monoscour filter is a heavy duty, high rate gravity filter design for treating high turbidity loads and sticky particulates such as those typically encountered following chemical treatment with polymers and coagulants. It is particularly useful in wastewater applications, lime softening applications, cooling tower side stream filtration and all other gravity filter applications where high filtering rates are desirable. The Monoscour filter is fully automatic and incorporates a self contained backwash compartment which eliminates the need for backwash pumps and tanks. It also includes a vigorous air scour step to efficiently clean the filter media while minimizing the volume of backwash water consumed.

Filter media generally consists of a dual layer (12" to 24" each) of fine sand and coarse anthracite. The sand layer provides the polishing function while the anthracite layer provides both roughing and depth filtration for high capacity. Routine backwash maintains the bed strata with the lighter anthracite layer above the sand. This configuration provides two stage filtration in a cost effective package. Other filtration media are also available.

Monoscour filters are shipped in a single piece construction for diameters up to 14 feet with either single or dual filtering compartments. Field erected units have been supplied with diameters up to 39 feet with up to three separate filtering compartments. The multi-compartment design stores less backwash water since only 1/2 or 1/3 of the filter area is backwashed at any given time. This design reduces the straight height of the filter and the required inlet head, which (based on the hydraulic requirements) also reduces the height of the upstream clarifier such as our Reactivator Clarifier. It also minimizes the instanteous backwash rate which further reduces the size of sumps and backwash water recovery equipment.