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NSF International <br /> Standard 40 - Individual Wastewater Treatment Plants <br /> 1 <br /> Week Beginning. _ May 9, 1993 . Plant Code. 4/108 <br /> Weeks Into Test 29 <br /> Weekend Dosing. Sunday- 450 gallons Saturday- 450 aallons <br /> Monday Tuesday Wednesday Thursday Friday <br /> Dosed Volume (gallons) 450 450 450 450 450 <br /> Dissolved aeration 1.7 1.7 1.3 1.2 1.1 <br /> Oxygen chamber <br /> (m9lL) <br /> effluent 2.7 1.2 3.9 2.7 1.6 <br /> influent 14 15 15 15 15 <br /> Temperature aeration 21 22 23 22 22 <br /> (°C) chamber <br /> effluent 16 16 22 21 18 <br /> influent 7.4 7.5 7.4 7.6 7.5 <br /> pH aeration 7.3 7.5 7.4 7.5 7.3. <br /> chamber <br /> effluent 7.8 7.9 8.0 7.9 7.9 <br /> Biochemical influent 160 160 160 150 153 <br /> Oxygen Demand <br /> (mg/L) effluent <5 <5 5 <5 5 <br /> influent 280 260 190 200 130 <br /> Suspended <br /> Solids aeration g <5 5 6 10 <br /> (mg/L) chamber <br /> effluent 7 8 7 6 7 <br /> Volatile influent 230 220 160 170 110 <br /> Suspended aeration 6 <5 <5 <5 7 <br /> Solids chamber <br /> (m9/L) effluent <5 6 5 6 <5 <br /> 45 Minute <br /> Settleable aeration <5 <5 <5 <5 <5 <br /> Solids chamber <br /> (mUL) <br /> (1) Site problem Notes: <br /> (2) Malfunction of system under test <br /> (3) Weather problem 1 <br /> (4) Other <br /> TGS/3-92 <br /> C-29 <br />