Types of Membrane Modules
Membrane modules come in two basic configurations; 1- self-contained, and 2- open immersion type. The most common module type for UF and RO membranes is the self-contained (or housed) membrane module where feed water is pumped through the housing. All feed, concentrate, and filtrate piping connections are integral to the module. Typical module variations are shown below.
The open immersion type modules are placed into the feed water tank with the membrane exposed.

Photo of five versions of housed Microza Membrane modules.
Other versions of housed membrane modules

Pleated Flat Sheet Membrane (MF)

Spiral Wound Flat Sheet Membrane (RO & UF)

Ceramic Monolith Element Membrane
(MF & UF)

Tubular Membrane (RO & UF)