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NSF International <br /> Standard 40 - Individual Wastewater Treatment Plants <br /> Week Beginning. _ April 11,„1993- Plant Code. 108 <br /> Weeks Into Test: 25 <br /> Weekend Dosing: Sunday- 450 gallons Saturday- 450 gallons <br /> Monday Tuesday Wednesday Thursday Friday <br /> Dosed Volume (gallons) 450 450 450 450 450 <br /> Dissolved aeration 1.8 1.6 2.0 <br /> Oxygen chamber 2.9 1.8 <br /> (mg/L) <br /> effluent 3.8 3.3 3.7 2.9 4.6 <br /> influent 12 12 12 12 12 <br /> Temperature aeration 16 15 15 16 17 <br /> (°C) chamber <br /> effluent 10 13 12 11 11 <br /> influent 7.4 7.5 7.5 7.5 7.5 <br /> pH aeration 74 7.4 75 74 <br /> chamber 7.4 <br /> effluent 7.8 7.7 7.7 7.7 7.7 <br />~ Biochemical influent 150 160 150 150 150 <br /> Oxygen Demand <br /> (mg/L) effluent <5 <5 <5 <5 <5 <br /> influent 160 160 200 170 210 <br /> Suspended <br /> Solids aeration 7 6 8 11 13 <br /> (�L) chamber <br /> effluent 8 8 10 7 8 <br /> Volatile influent 130 140 170 150 180 <br /> Suspended aeration <br /> Solids chamber <5 <5 <5 8 5 <br /> (AVL) effluent 6 6 7 <br /> 5 s <br /> 45 Minute <br /> Settleable aeration <5 <5 <5 <5 < <br /> Solids chamber 5 <br /> (mUL) <br /> (1) Site problem Notes: <br /> (2) Malfunction of system under test <br /> (3) Weather problem � <br /> (4)Otha <br /> TGS/3-92 <br /> C-25. <br />