International Sugar Journal

Experimental effluent treatment at Sezela [South Africa]* [Full subscriber]

The furfural plant at Sezela generates a unique effluent that is currently discharged into the sea. Although the effluent is essentially dilute acetic acid, it includes other components that render it difficult to treat. Various methods of treatment have been investigated and trialled, including a number of aerobic and anaerobic processes. Recovery of the acetic acid has also been investigated. A membrane bioreactor (MBR) was constructed at Sezela and has been successful in treating 25% of the effluent from the furfural plant, achieving on average a 95% reduction in chemical oxygen demand. The success of the MBR is due to…

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