5 Primary Sewage Sludge From A 5 Mgd Wastewater Treatment Plant Is To Be Treated By Anaerobic Digestion The Following 1 (16.59 KiB) Viewed 13 times
5 Primary Sewage Sludge From A 5 Mgd Wastewater Treatment Plant Is To Be Treated By Anaerobic Digestion The Following 2 (26.81 KiB) Viewed 13 times
5. Primary sewage sludge from a 5-MGD wastewater treatment plant is to be treated by anaerobic digestion. The following apply: 0= 14 days at 30°C; Moisture content of primary sludge = 95%; specific gravity of sludge = 1.05, dry solids removed in primary tank = 6500 lb/day. What is the required volume (ft) of the anaerobic digester? (Ans. 27.776 ft)
daily VSS lb VSS loading volume ftday) 1b/Mgal 8.34 ift = 7.48 gal mg/L mg mg 1% solids 10,000 ppm L L NOÄEL. body weight Drinking water equivalent level (DWEL) UF. drinking water intake M VE where SPP V - daily sludge volume, M = daily mass of solids: Sa = specific gravity of sludge; Pw = specific weight of water = 62.4; P = decimal percent solids 1/2
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