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TABLE 2 <br /> SUMMARY OF DATA <br /> for the period April 2 , 1973 through May 1 , 1973 <br /> SUBDIVISION FLOW PATTERN AVERAGE MAXIMUM MINIMUM <br /> Flow gpd Influent 2830 3000 2300 <br /> Temperature Influent 16 18 14 <br /> °C. Aeration Tank 17 19 16 <br /> Influent 7 .3 7 . 5 7 . 2 <br /> pH Aeration Tank 7 . 3 7 .5 7 . 0 <br /> Primary Clarifier 7 .4 7 .6 7 . 0 <br /> Dissolved Aeration Tank 6 .1 9 .0 2 . 0 <br /> Oxygen <br /> m9/1 Effluent 4 . 3 7 4 <br /> Biochemical Influent 236 362 164 <br /> Oxygen Demand Primary Clarifier 11 29 3 <br /> 5-day mg/1 Effluent 9 17 3 <br /> Chemical Influent <br /> Oxygen Demand 575 922 388 <br /> mg/1 Effluent 59 132 28 <br /> Influent 268 392 I 182 <br /> Suspended Primary Clarifier 19 43 8 <br /> Solids <br /> Effluent 16 40 7 <br /> mg/1 Aeration Tank 1980 3870 980 <br /> Influent 221 308 150 <br /> Volatile <br /> Suspended Primary Clarifier 14 33 5 <br /> Solids Effluent 12 30 5 <br /> mg/1 Aeration Tank 1479 3020 780 <br /> Sludge Volume <br /> 30-min. ml Aeration Tank 332 710 100 <br /> Sludge Volume <br /> Index. Aeration Tank 156 306 100 <br /> Ammonia Influent 19 .6 27 . 5 15 . 2 <br /> Nitrogen Effluent <br /> mg/1 1. 0 3 . 7 <0 . 1 <br /> Influent <0 . 1 <0 . 1 <0 . 1 <br /> Nitrate <br /> Nitrogen <br /> mg/1 Effluent 5 .2 8 . 1 2 . 8 <br /> Phosphate Influent 28 . 4 44 . 8 17 . 2 <br /> mg/l Effluent 18 .0 32 .6 9 . 3 <br /> t <br /> 31 <br />