Patent ID: 6254772
Filing Date: 2001-07-03
Classification: B01D,C02F,Y10T

Abstract:
A multimedia fluid treatment unit comprising;a plurality of discrete containers stacked upon each other, each of said discrete containers having an inlet for fluid at one location thereon and a discharge for fluid opposite said inlet, each container being positioned in series flow relationship to the next adjacent container, each of said containers defining a chamber for receiving and retaining a finely divided fluid treatment medium therein and between said fluid inlet and discharge whereby the fluid to be treated will flows through the medium in each chamber and serially to the medium in the in the next chamber; anda valve associated with said containers and operable to:a first service position in which the fluid to be treated is introduced to said containers and the fluid which is treated by the finely divided fluid treatment medium in the containers is removed from said containers and discharged;a second rinse position in which the finely divided fluid treatment medium in the chambers is rinsed, anda third backwash position in which the finely divided fluid treatment medium in the chambers is backwashed.