Membrane suppliers normally provide warranties with their products, as with almost all products subject to wear-and-tear during use.
Warranties usually guarantee a minimum membrane life (see Membrane ageing − a hard life?), provided the membrane is operated within a strict operational envelope. This envelope may include stipulations on the flux, air scour rate and, perhaps most critically, physical and chemical cleaning protocol: membrane materials have different degrees of resistance to different chemicals and chemical types (acid, basic, oxidative).
Warranties also often specify strict conditions relating to:
- storage prior to installation (e.g. the temperature),
- membrane conditioning (i.e. its ‘wetting out’ prior to use), and
- manual handling.
Membranes are most exposed to risk of damage during unscheduled manual intervention, and particularly when the membrane modules are removed from the tanks and/or housing.
© Text copyright Judd & Judd Ltd
Contact firstname.lastname@example.org to remove or edit a comment.
Share this page
Information on this page has been supplied by third parties. You are reminded to contact the third party concerned to confirm information is accurate, up to date and complete before acting upon it.