outflow concentration is relatively independent of the EAASR outflow concentration,


which is the only inflow to the STA, and thus reaction rate. This independence was due


to the relatively long HRT and high reaction rate. In fact, if the STA 3/4 received all


inflow without first routing through the reservoir it would still achieve an outflow


concentration of 0.021 mg/L. This result does not account for mass loading and its long


term effect on the STA. Therefore, such an operating scheme is not suggested. Data


from this analysis for selected reaction rates are presented in Table 4-13.


 0.100


 0.090


 0.080


 0.070
-J

E
= 0.060
o

I 0.050
o
C
0.040


0 0.030


 0.020


 0.010


 0.000


EAASR
STA 3/4


 0 0.05 0.1 0.15
 Reaction Rate dayss)

Figure 4-18. Outflow Concentration of the EAASR and STA 3/4 for Varying Reaction
 Rates