Embedded Influent Diffuser for Floating Media Filter

摘要

A floating media filter including a filter housing having an influent inlet and an effluent outlet. A floating media is positioned in the housing and forms a static media bed when the filter is in a filtration stage. A diffuser trough is positioned in the filter housing such that the lower surface of the media bed, when the filter is in the filtration stage, is below the upper edge of the diffuser trough. A backwashing mechanism causes dispersion of the media bed during the backwashing stage.

主权项

1. A floating media filter comprising:
a. a filter housing having a a wastewater influent inlet positioned below a a treated water effluent outlet; b. a floating media positioned in the housing and forming a media bed when the filter is in a filtration stage, the media bed having a lower surface; c. a diffuser trough including an upper edge, the diffuser trough positioned in the filter housing such that (i) the lower surface of the media bed, when the filter is in the filtration stage, is below the upper edge of the diffuser trough, and (ii) the wastewater influent inlet feeds directly into the diffuser trough, thereby directing inlet flow in a path substantially along an interior length of the diffuser trough; and d. a backwashing mechanism, which during a backwashing stage, causes substantial lowering of the media bed in the filter housing and dispersion of the media bed.