Disc filter pre-screen dual media disc filter
AssigneeEvoqua Water Technologies LLC
InventorsPatrick Harden, Harry Bryant
Life of this patent
Estimating the term…
Abstract
According to various aspects and embodiments, a system and method for two-stage filtration is provided. The system includes an inlet fluidly connectable with wastewater, a first stage filter assembly that is fluidly connectable with the inlet and has a rotary drum with a filter surface configured for radially inward fluid flow, a second stage filter assembly that is fluidly connectable with the first stage filter and has a plurality of filter discs configured for radially outward fluid flow, and an outlet fluidly connectable with filtrate generated by the second stage disc filter assembly.
Claims12
A filter device for filtering a fluid, the filter device comprising:
- a rotatable central drum including a plurality of openings along its length;
- a plurality of disc-shaped filter members attached to the rotatable central drum, defining a plurality of enclosed spaces in fluid communication with an interior of the rotatable central drum through the plurality of openings;
- a rotary drum filter defining an inner chamber in fluid communication with the interior of the rotatable central drum;
- and
- a housing at least partially surrounding the rotary drum filter and the plurality of disc-shaped filter members,
- wherein a fluid to be filtered passes through a filtration surface of the rotary drum filter into the inner chamber producing a filtrate which passes into the interior of the rotatable central drum through the plurality of openings, into the plurality of enclosed spaces, and through a filtration surface of the plurality of disc-shaped filter members further filtering the fluid.
Dependencies are inferred from the claim text.