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Extracted text: An aeration tank receives 10,000 m3/d of wastewater with a BOD loading of 2100 kg/d. The aeration time is 4 hr. The mass of MLSS in the tank is 6130 kg; and it is estimated that 613 kg of sludge is wasted daily. Determine: (i) Aeration tank volume (ii) Dimension of aeration tank (state your assumptions) (iii) MLSS concentration in the aeration tank (iv) Solid Retention Time (SRT) (v) F/M ratio (vi) Check if the plant complies with Standard A; given the flowrate of supernatant in final clarifier is 9950 m3/d, with a BOD loading of 150 kg/d. (vii) Comment about the concentration of solids in the supernatant of the final clarifier, and the BOD concentration in the recycle stream.