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Orenco Systems Inc. March 2002 <br /> AdvanTex AX10 Test Report <br /> Although treated effluent CBOD5 concentrations were highest between Weeks 23 to 27, <br /> the mass of CBOD5 applied during that period was high (406 gm/d average) and the mass <br /> of CBOD6 removed was also high (321 gm/d average). This suggests that the high <br /> treatment system loading may have affected the system recovery. <br /> r It is noteworthy that the recovery in CBOD5 removal efficiency occurred during a period of <br /> high influent CBOD5 loading. <br /> The results indicate that high CBOD5 removal efficiency was achieved for CBOD5 loading <br /> rates ranging from 100 to 1,000 gm/d (Figure 11). Although based on limited data, it is <br /> noteworthy that CBOD5 removal efficiency was in excess of 90% in all instances where <br /> C130D5 loading rates exceeded 600 gm/d. This suggests that the treatment capacity of the <br /> unit was not exceeded even at such high loadings, and that the AX10 is capable of <br /> handling short duration shock loadings equivalent to a ten-person household. <br /> Figure 11: CBOD Load vs. CBOD Removal Efficiency — Daily Data <br /> ♦^ 100 -- - <br /> r ' ••. �. ' K• .. . • .. <br /> 90 <br /> N <br /> r y <br /> � 70 <br /> • <br /> � 60 <br /> ♦ I <br /> r 50 <br /> 0 200 400 600 000 1000 1200 <br /> COOD load QW) <br /> 4.2 Relationship Between Effluent CBOD, Effluent TSS & Effluent <br /> Turbidity <br /> Figure 12 presents a plot of daily effluent turbidity versus effluent CBOD5 concentration. <br /> ` There appears to be some correlation between the two parameters, suggesting that <br /> turbidity could be a useful rough indicator of effluent CBOD5 levels for the AX10 unit. <br /> r <br /> r <br /> NovaTec Consultants Inc. Page 22 of 38 <br /> r <br />