ANAEROBIC TREATMENT OF FISH FLOUR WASTE-WATER

We carried out a kinetic study on the anaerobic digestion of wastewate r generated by the production of fish flour. Three bioreactors contain ing different immobilization supports were investigated. Assuming firs t-order kinetics, the experimental results were fitted to the equation G = G(m)[l - exp(K(o)t)]. We determined the apparent kinetic constant of the process (K(o)) and found it to be dependent on the nature of t he support at chemical oxygen demand (COD) levels below 9 g/L. Higher COD levels resulted in substrate inhibition prevailing over the effect of the support.