Question: 2. ( 25 points) A perfectly mixed aeration pond ( 500 m3 ) with no recycle (return line) serves as the biological reactor for a

2. ( 25 points) A perfectly mixed aeration pond ( 500 m3 ) with no recycle (return line) serves as the biological reactor for a small community. The pond receives 100m3/d of influent with a BOD5 of 500mg/L. It has been determined that the biological kinetic constants for the system are: Ks=100mg/L(BOD5)kd=0.1d1 max=2.0d1 Y=0.7mgVSS/mgBOD5. k=max/Y 1. What is the overall BOD5 treatment efficiency (as a percentage of influent BOD5 concentration) of the pond? 2. What mass of microbes will be produced in the pond each day (assume X0=0 )? State any and all assumptions

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