Abstract: A mobile water treatment plant capable of handling a high volume of sewage confined within the dimensions of a conventional truck-hauled container comprises:(1) a screen to separate gross solids from liquids;(2) a holding chamber between features 1 and 2 in which the liquid is aerated;(3) a flocculating chamber for the liquid;(4) a lamellar separator (bottom fed with intermediate auxillary lamellae extending 1/2 to 1/3 of the length of the main lamellae); and(5) treatment of the water from the lamellar separator with "activated oxygen" as described and claimed in U.S. Pat. No. 4,214,962.A preferred subsidiary feature is to recycle a controlled amount of the sludge separated at point 1 to the holding tank.

Abstract: Improved results can be obtained in lamella separators having a liquid feed at the base of the lamella which introduces liquid in horizontal direction perpendicular to the direction of lamellar flow by provision of a throat restriction at the point of influx and, where the feed prior to reaching the point of influx flows downwardly in an inverted V-shaped influent chamber, providing said chamber with a baffle extending across one wall of said chamber.