Maximizing Secondary Wet Weather Treatment Capacity at ... - pncwa
Maximizing Secondary Wet Weather Treatment Capacity at ... - pncwa
Maximizing Secondary Wet Weather Treatment Capacity at ... - pncwa
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Provide Tools for Sludge Settleability Control<br />
Influent VFAs can decrease during wet we<strong>at</strong>her making<br />
selector difficult to maintain<br />
RAS<br />
1 2 3 4 5 6 7<br />
65% 35%<br />
To <strong>Secondary</strong><br />
Clarifiers<br />
RAS<br />
1 2 3 4<br />
5<br />
6<br />
7<br />
To <strong>Secondary</strong><br />
Clarifiers<br />
Aerobic RAS Storage<br />
Primary Effluent<br />
Pipe Bridge<br />
Anaerobic<br />
Anaerobic/aerobic swing<br />
Aerobic RAS storage zone can be<br />
intermittently aer<strong>at</strong>ed to increase VFA<br />
production during long rain events<br />
Thanks to Dr. David Stensel for this idea!<br />
Aerobic<br />
24
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