INTEGRATED MEMBRANE MODULE RACK

The invention provides a fluid treatment system, comprising a row of vertically arranged cylindrical filtration modules having a cylindrical shell, an upper end, a lower end and a shell interior and an upper and a lower header coupled to upper and lower end of the shell. In the shell interior, hollow fiber membranes are embedded with their ends in an upper and a lower tube sheet and are open at the ends. An exterior filtrate space is formed around the membranes extending between upper and lower tube sheets and an inner surface of the shell. Upper and lower head spaces are formed between upperand lower tube sheets and the respective headers. The lumina of the hollow fiber membranes are in fluid communication with the head spaces. The cylindrical shells comprise outlet ports being in fluidcommunication with the exterior filtrate spaces and being connected to a filtrate branch pipe. Upper headers are in fluid connection with each other thereby forming an upper collecting duct running along the row at the same le