Question 1. A wastewater stream is treated biologically by using a reactor containing immobilized cells in porous particles. Variation of the rate of substrate consumption with particle size is given in the following table. a. What are the effectivness factors for DP=4mm and DP=7mm ? b. The following data were obtained for DP=4mm at different substrate concentrations. Assuming no liquid film resistance, determine the rm and Ks for the microbial system