Systems Approach for New Infrastructure Design

2. Systems Approach for New Infrastructure Design Chuck O’Neill Sr. Extension Specialist NY Sea Grant / Cornell University PREPARING FOR THE INVASION Zebra and Quagga Mussels in Utah Water Treatment Facilities 15 July 2008 Orem, Utah

3. Dreissenid Mussel Control – Systems Approach European Experience as a Guide • Intake design • Pumping & flow velocity • Onshore structures • Internal water flow • Trouble locations • Long-term design

4. Dreissenid Mussel Control – Systems Approach • Single Short Intake • Piggable • Dewater with cleanout • Dual Short Intakes • Hermetically seal with cleanout • Alternate pumping schedule Shoreline Pumping Bay

5. Systems Approach - Intake Specifications • Smooth Walls • Low friction coefficient • Maintain good laminar flow Trash Racks • Antifouling or fouling release coatings • Cathodic protection • Uninterrupted Flow • Wide radius turns • No major changes in diameter • Minimize vertical sections Access

6. Systems Approach – Pumping & Flow Velocity • Maintain flow > 1.5 m/sec • Small vs. large diameter conduit • Maintain low friction coefficient • High vs. low velocity H2O flow

7. Systems Approach – Offshore Structures • Wet Wells, Low Lifts, Pumphouses • High-velocity laminar water flow • Smaller volume structures • Eliminate eddying • Hard-to-Reach Locations • Air bubblers/curtains • Cathodic protection

8. Systems Approach – Internal Water Flow • Circulating Water Systems • Maintain smooth, fast flow • Copper and polymer surfaces • Minimize eddying • Utilize waste heat - recirculate • Service Water Systems • Maintain smooth, fast flow • Copper and polymer surfaces • Backflushablemicro filtration Design in Cleanouts/Access

9. Systems Approach – Long-term Approach • Design With Mussels in Mind • Over-design • Design cleanouts & access • Dewatering & Mussel Removal • Part of routine unit downtime