Disc filter pre-screen dual media disc filter
AssigneeEvoqua Water Technologies LLC
InventorsPatrick Harden, Harry Bryant
Life of this patent
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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.
Claims30
A filter device for filtering wastewater, the filter device comprising:
- a drum filter including a rotary drum with a filter surface having a first side facing an interior of the drum and a second side facing an exterior of the rotary drum and being fluidly connectable with a source of wastewater;
- and
- a disc filter having an inlet fluidly connectable with the first side of the filter surface of the rotary drum.
A two-stage filtration system for filtering wastewater, the system comprising:
- an inlet fluidly connectable with the wastewater;
- a first stage filter assembly fluidly connectable with the inlet and having a rotary drum with a filter surface configured for radially inward fluid flow;
- a second stage filter assembly fluidly connectable with the first stage filter assembly and having a plurality of filter discs configured for radially outward fluid flow;
- and
- an outlet fluidly connectable with filtrate generated by the second stage filter assembly.
A method of treating wastewater, comprising:
- introducing the wastewater to a first-stage filtration operation comprising a barrier filter to produce filtered wastewater;
- and
- introducing the filtered wastewater to a second-stage filtration operation comprising a disc filter to produce treated water.
Dependencies are inferred from the claim text.