Abstract
An ultrafiltration (UF) unit was used for tertiary wastewater treatment at a wastewater plant. The pilot study showed that UF is effective to remove turbidity, total bacteria and coliform bacteria from the secondary effluent to obtain high quality filtrate for water reuse, but UF is not very effective in the removal of dissolved substances such as colour, UV254 and TOC, and the removal efficiency and permeate flux can be improved by conducting PAC adsorption or coagulation prior to UF operation. The backwash is essential to obtain a higher permeate flux.
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