Wastewater treatment of tapioca starch has been done using Fe304-zeolite composite. Characterization of Fe304-zeoIite composite used SEM and XRD. The evaluated parameter were optimum contact time with variation 0; 0.5; 1; 1.5; 2 hours, effective weight ratio Fe304-zeolite composite with variation 100, 200, 300, 400, 500 mg and optimum pH with variation 4, 5, 6, 7, 8 to decreased Chemical Oxygen…