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NSF International NSF International <br /> -nO Standard 40-Residential Wastewater Treatment Systems Standard 40-Residential Wastewater Treatment Systems <br /> W 1 Plant Effluent Plant Effluent <br /> 10 N <br /> CD p <br /> o Week Beginning: Se tember 9 2001 Plant Code:NT-S05 Week Beginning: September 16 2001 Plant Code:NT-S05 <br /> a o <br /> rn <br /> o Weeks Into Test: 17 Weeks Into Test: 18 <br /> Sun Mon Tue Wed Thur Fri Sat Sun Mon Tue Wed Thur Fri Sat <br /> Dosed Volume(gallons) 450 446 442 438 434 430 425 Dosed Volume(gallons) 421 417 509 511 513 515 517 <br /> Dissolved aeration aeration <br /> chamber Dissolved <br /> Oxygen(mg/l) Oxygen(mg/L) chamber <br /> effluent effluent <br /> influent 17 influent 18 18 18 18 18 18 <br /> o =r Temperature aeration Temperature aeration <br /> 3U;, <br /> ( t ) chamber (C) chamber <br /> CD -0 <br /> 0 effluent 18 effluent 18 18 18 20 18 19 <br /> 3 influent 7.0 influent 7.1 7.0 7.1 7.0 1 7.1 7.2 <br /> pH aeration aeration <br /> CD Q o chamber pH chamber <br /> :E Cr effluent 6.4 <br /> CD effluent 6.5 6.6 6.6 6.5 6.5 6.4 <br /> Carbonaceous <br /> influent 120 Carbonaceous <br /> F) Biochemical Biochemical influent 120 120 88 87 130 110 <br /> 11 <br /> mc Oxygen Demand effluent <2 Oxygen Demand <br /> CD (mg/L) (m; ) effluent 5 3 2 <2 <2 2 <br /> o 5. influent 340 influent 200 200 200 220 600 200 <br /> Cn Suspended aeration Suspended <br /> o p aeration <br /> „ Solids(m <br /> m ber <br /> g/L) cham <br /> o Solids(mg/L) chamber <br /> -, effluent 7 effluent 14 10 5 3 <2 5 <br /> W -0 Volatile influent influent <br /> Suspended aeration Volatile chamber aeration <br /> Suspended <br /> Solids(mg/L) chamber <br /> Solids(mglL) <br /> effluent <br /> 45 Minute effluent <br /> aeration 45 Minute aeration <br /> Settleable Solids 4,8 Settleable Solids 7.8 5.5 3.7 [t2.2 2.8 <br /> (mL/L) chamber (mliL) chamber <br /> (a)Site problem Notes: Wash day stress from 9/10 to 9/14. (a)Site problem Notes: Working Parent Stress started on 9/22. <br /> (b)Malfunction of <br /> s @)Malfunction of <br /> system under test <br /> system under test <br /> (c)Weather problem (c)Weather problem <br /> 'o (d)Other <br /> No (d)Other <br /> o - <br /> O A <br /> N � <br /> l [• <br /> Y <br />