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NATIONAL SANITP'"ON FOUNDATION TESTING LAbuuOlin+ <br /> MODEL 9P-30 <br /> pti RFOR%7ANCL EVALUATION - <br /> Week Beginning: 29 Apr 73 <br /> FLOW PATTERN: Subdivision SUN MON TUE WED THU FRI SAT <br /> Flow gpd Influent 2700 2700 3000 1400 1900 0 0 <br /> Batch Count 1076 1087 1098 1108 1113 1118 1118 <br /> Dissolved Aerati cn Tank 5 2 <br /> Oxygen mg/1 Efflueht <br /> Influent 4 16 18 <br /> Temperature <br /> C. Aeration Tank <br /> e <br /> Sec'dry Clarifier <br /> Influent <br /> PH Aeration Tank <br /> Primary Clarifier 7 2 <br /> Biochemical <br /> influent 352 224 256 <br /> Oxygen Demand Primary Clarifier <br /> il <br /> mg/1 Effluent <br /> Suspended <br /> Influent 226 <br /> Solids Aeration Tank 3870 2870 1300 2140 2350 1870 1380 <br /> m7/1 primary Clarifier 29 43 18 <br /> Effluent <br /> 37 23 11 <br /> Influent 224 248 166 <br /> volatile3020 232G 800 1550 1390 1480 910 <br /> Suspended Aeration Tank <br /> Solids mg/1 primar Clarifier 18 <br /> 33 16 <br /> Effluent 27 19 9 <br /> Sludge Volume 710 490 140 290 250 170 110 <br /> 30-min . ml Aeration Tank <br /> Sludge Volume <br /> Index so <br /> Aeration Tank 183 171 108 136 106 91 <br /> Chemical Influent 584 664 492 <br /> Oxygen Demand <br /> mg/l Effluent 68 76 32 <br /> Ammonia Influent q <br /> Nitrogen <br /> mg/l Effluent 1.2 0.6 1.8 <br /> Nitrate influent <0.1 <0.1 <0.1 <br /> ,titrogen <br /> mg/1 Effluent 5.1 5.2 5.9 <br /> Influent 27 .9 29 .4 28.8 <br /> Phoso_ hate <br /> m9/1 Effluent 19 ,2 20 .0 16.6 <br /> Residual 0.7 0 .9 1.9 1.5 <br /> Chlorine ma 'l Effluent <br /> Coliform Grpprimary Clarifier 22400 110 540 <br /> 1000 MPN <br /> per 100 ml Effluent 1i 0 .23 0.05 0 .09 <br /> 1 M,-, - Final day of subdivision flow pattern test phase. <br /> 2 [Aa} - Changed flow pattern to 2,000 GPD eight-hour steady state, <br /> at 11:30 A.M. <br /> 9 39 <br />