2. The 15,000 gallon aeration basin shown in the figure maintains a constant 2,500 mg/L mixed liquor suspended solids (M

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2 The 15 000 Gallon Aeration Basin Shown In The Figure Maintains A Constant 2 500 Mg L Mixed Liquor Suspended Solids M 1 (103.48 KiB) Viewed 19 times

2. The 15,000 gallon aeration basin shown in the figure maintains a constant 2,500 mg/L mixed liquor suspended solids (MLSS, biomass plus non-biodegradable organic matter) and treats 35,000 gallons per day of wastewater. The suspended solids are separated in a secondary clarifier with recycle and wasting of the settled sludge. The return activated sludge (RAS) flow is 6,000 gallons per day and the waste activated sludge (WAS) flow is 500 gallons per day. The clarifier effluent contains 20 mg/L MLSS. Find the solids concentration in the RAS and WAS lines (in mg/L) and the solids retention time (SRT, Oc; in days). influent aeration basin effluent clarifier recycle waste