Sony music company wants to discharge their waste water to the pitman sewer. However the plant discharge contains chromium that needs to be removed before discharge to the sewer. The plant currently has one CMFR for removal of chromium. How many more identical reactors does the sony music company require to meet the regulatory requirements for chromium discharge of 0.01 mg/L into the Pitman Sewer? Q = 100 L/hr, Chromium in=175 mg/L, chromium out=75mg/L, Removal rate=0.35/min, Volume of current reactor=50 L