Studies on treatment of wastewater from tapioca based sago industry

Abstract

The paper highlights the characteristics of the wastewater generated from tapioca based sago industries and the results of the detailed treatability studies carried out on bench scale to arrive at the’ most appropriate treatment scheme for the treatment of wastewater from sago industry.

Characterisation of wastewater from sago industry indicate that it is acidic in nature and highly biodegradable with BOD/COD ratio in the range of 0.79 ‐ 0.86. Based on bench scale treatability studies, the treatment scheme suggested for wastewater management include pH neutralisation using lime as coagulant followed by two stage anaerobic fixed film fixed bed reactor system and aquaculture pond. The treated effluent quality will meet the stipulated standards for agriculture utilisation.

Key words:

• Tapioca
• sago
• treatability studies
• physico‐chemical treatment
• biological treatment
• wastewater management