Available Treatment Capacity Range

3000 to 30,000 gpd MEMBRANE SURFACE VELOCITY REQUIRED 3 to 8 fps provided by recirculation.

PORE SIZES 3 to 100 A

MEMBRANE PRESSURE DROP 2 to 40 psid

HYDRAULIC LOADING (FLUX) RANGE

5 to 30 gpd per sq ft

Continuous biological oxidation processes combined with ultrafiltration membranes are used as a means of effluent separation. The membranes filter out the biological cells while allowing passage of the treated effluent.

These membranes can achieve BOD removals in excess of 99% on a commercial scale with an influent containing 200 to 600 mg/l BOD. The membrane filter produces an essentially colorless and odorless effluent having both zero SS and coliform bacterial counts. These systems consist of an activated-sludge reactor and a membrane filter and are available in treatment capacities ranging from 3000 to 30,000 gpd.

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