large amount ofwastewater. According to the study of Tanticharoen
and Bhumiratanatries [2], the generation of wastewater at the
tapioca starch plants averages 20 m3 for every ton of starch being
produced. Similarly, Hien et al. [3] reported the characteristics of
wastewater from the Vietnam tapioca starch plants with the values
of 11,000–13,500 mg COD/l, 4200–7600 mg SS/l, and pH of 4.5–5.0.
The approximate generations of wastewater and solid waste
(fibrous residue and peel) are 12 m3 and 3 kg per ton of starch,
respectively.