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V <br /> -IRI-51 <br /> %W <br /> MASS BALANCE ANALYSIS <br /> - Wine Cup Motor Coach Resort Wastewater Treatment Plant- <br /> Wine Cup Motorcoach Resort Wastewater Treatment Facilities <br /> 25,000 gpd @ Average Dry Weather Flow <br /> II. Process Design Calculation <br /> 2.1 Secondary Treatment System <br /> 2.1.1 Flow Chart and Mass Balance Analysis <br /> `. <br /> %W Intdnal Recycle <br /> n (3)age DAF <br /> influent <br /> ) Mw— (1 <br /> t Backwash Wastewater%W <br /> Solid a101d h.W, <br /> BWWl f71 <br /> '%W <br /> 2.1.2 Parameter: <br /> Lift Pumps <br /> %W No.of pump: 2 <br /> Flow: 80 gpm <br /> `, Head: 20 ft <br /> Power: 0.75 hp <br /> \r <br /> Inlet Screen/EO Tank <br /> %W No.of units 1 <br /> Net size 2-5 mm <br /> %1W Flow capacity 120 gpm <br /> 14W No.of units 1 <br /> 14W Each EQ tank volume <br /> Total EQ tank volume 1,257 gallons <br /> Equalization time 1.2 hr <br /> Anoxic Zone: <br /> Internal recycle ratio 2.2 <br /> Nitrate fed to anoxic zone 4.4 lb-NO3 N/d <br /> `r F/M 2.00 g-BODs/g-MLVSS <br /> MLVSS 3,000 mg/L <br /> MLSS 3,750 mg/L <br /> MLVSS/MLSS 0.80 <br /> Total required operational reactor volume,V 195 ft' <br /> 1,458 gallons <br /> No.of units 1 <br /> Water depth,H 6 ft <br /> ` Operational volume of each train 1,257 gallons <br /> Total operational volume,V 1,257 gallons <br /> `, Hydraulic retention time,HRT 1.2 hr <br /> %W Specific denitrification rate,SDNR 0.20 g-NO3 N/g-MLVSS.d <br /> kkw Nitrate could be reduced,NO, 6.3 lb-NO3 N/d <br /> Oxygen supplied by nitrate reduction 15.9 Ib-O,/d <br /> Check Alkalinity <br /> Alkalinity consumed for nitrification 232 mg/L as CaCO3 <br /> Mass Balance-SNdN Appendix-i-3 of 18 08/22/07 <br />