| 摘要 |
A method of filtering solids from the effluent from a wastewater collection container (10) such as a septic tank is disclosed. A mesh screen filter (44) is immersed in wastewater having a concentration of waste solids which have been allowed to distribute into a scum layer (16) and a sludge layer (14) with a horizontal layer (18) of liquid therebetween. The filter (44) is surrounded with a housing (12), and the interior surface of the housing is exposed to the horizontal layer (18) of liquid through a plurality of apertures (30) in the housing. Liquid from the horizontal layer (18) flows through the apertures (30) into the housing (12) and thereafter the liquid flows from one side of the filter (44) to an opposite side thereof through a mesh screen filtering surface area greater than the interior surface area of the housing. Thereafter, the liquid flows through a liquid effluent outlet (62) of the container (10). This filter is very efficient and consequently provides a high quality effluent, while resisting clogging and resultant collapse of the mesh screen surface area.
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