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R <br /> V <br /> �i <br /> NSF International <br /> Standard 40 - Individual'Wastewater Treatment Plants <br /> Week Beginning: November 1 1992 } Plant Code: 4/108 <br /> Weeks Into Test: 2 q <br /> Weekend Dosing: Sunday-_ 450 gallons Saturday 169 gallons <br /> h <br /> —_Monday----Tuesday— - -Wednesday—.---Thursday- --Friday <br /> Dosed Volume (gallons) 450 5450 450 450 450 <br /> Dissolved aeration <br /> 1.7 11.3 1.4 1.5 1.5 <br /> Oxygen chamber <br /> (mg/L) <br /> effluent 2.3 .2.4 2.4 2.0. 4.0 <br /> � <br /> influent 17 .117 17 17 17 <br /> pTemperature aeration chamber 19 19 19 19 19 <br /> 1 C) a II <br /> l <br /> effluent 15, 14 14 13 15 <br /> influent 7.6 ][7.5 7.5 7.5 7.5 <br /> aeration <br /> w <br /> pH chamber 7.8 T.9 7.7 7.5 7.8 <br /> effluent 8.0 18.1 8.0 7.9 7.9 <br /> Biochemical influent 170 yy`150 '180 140 160 <br /> 4 <br /> Oxygen Demand y <br /> (mg/L) effluent 6 <5 5 <5 <5 <br /> influent 180 230 210 180 150 <br /> Suspended , l <br /> Solids aeration 8 <5 15 <5 <5 <br /> (mg/L) chamber <br /> effluent 5 <5 <5 <5 <5 <br /> influent 140 ;� -1:1.90 170 . 150 130 <br /> Volatile <br /> Suspended aeration <5 <5 11 <5 <5 <br /> Solids chamber <br /> OWL) effluent <5 <5 <5 <5 <5 <br /> 45 Minute E I� <br /> Settleable aeration <br /> <5 � <5 <5 <5 <5 <br /> Solids chamber E <br /> (mUL) f. <br /> ( (1) Site-problem. ------ - _ - _. .. Notes: _'Low_doses-on 1117 caused byproblemwith dosing system._ - <br /> $„ (2) Malfunction of system under test <br /> (3) Weather problem <br /> (4) Other I� <br /> jV <br /> f� <br /> TGS/3-92 <br /> .. A ' <br />