Maximizing Secondary Wet Weather Treatment Capacity at ... - pncwa

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Challenges to Maximizing Secondary Treatment 4. Poor clarifier design and performance Shallow (12.5 ft deep), square, peripheral-feed, peripheral-withdraw Effluent Feed 12
Project Goals 1. Maximize peak flow treated through secondary process Provide wet weather operating modes 2. Maintain stable operation during all flow conditions Maintain well settling sludge across all operating modes, provide tools to address settleability issues 3. Simple operation and intuitive control Decision to shift operating mode is intuitive, solutions are simple and robust to operate 4. Improve secondary clarifier performance Use CFD to evaluate potential clarifier improvements 13
Page 1 and 2: Maximizing Secondary Wet Weather Ca
Page 3 and 4: Portland Rainfall Patterns 180 We
Page 5 and 6: Columbia Boulevard WWTP Largest was
Page 7 and 8: Columbia Boulevard WWTP Wet Weather
Page 9 and 10: Challenges to Maximizing Secondary
Page 11: Challenges to Maximizing Secondary
Page 15 and 16: Two Types of Wet Weather Events 1.
Page 17 and 18: Two Wet Weather Operating Modes Ste
Page 19 and 20: Two Wet Weather Operating Modes Ste
Page 21 and 22: Maintain Well Settling Sludge Two t
Page 23 and 24: Provide Tools for Sludge Settleabil
Page 25 and 26: Project Goals 1. Maximize peak flow
Page 27 and 28: Decision to Shift Operating Mode is
Page 29 and 30: Project Goals 1. Maximize peak flow
Page 31 and 32: Clarifier Capacity Analysis Based o
Page 37 and 38: Clarifier Failure Mechanism Also us
Page 39 and 40: Clarifier Improvements Failure mech
Page 41 and 42: Thank You! Questions Contact Infor

Maximizing Secondary Wet Weather Treatment Capacity at ... - pncwa

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