A state of suspended animation

Tighter environmental regulations mean that bulk filter media are slowly losing out to membranes in water treatment applications. They are not going without a fight, as Gord Cope discovers.

In the world of filtration, bulk filter media get little attention or respect. Whilst the limelight shines on a host of new technologies, the likes of activated carbon and organoclays linger in the shadows. Yet these versatile, economical and effective materials still command a significant, multi-billion dollar presence in the filtration sector.

Bulk filter media are primarily used to remove ...

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