Taking No Prisoners Beating Back Invasive Species Bureau of Reclamation
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1 ICAIS RESPONSE AND CONTROL Taking No Prisoners Beating Back Invasive Species Bureau of Reclamation Leonard Willett Hoover Dam Lower Colorado Region
2 Background 2007 January- adult quagga mussels found in Lake Mead and assumed to be from mussel infested house boat Fall- Reclamation s Lower Colorado Dams Office (LCDO) completed facility review Findings from review and updated activities of the lower Colorado River dams Research activities and environmentally friendly control barriers
3
4 Control Strategies Proactive Preventive Reactive Clean after establishing Can be labor intensive Redesign/retrofit
5 Invasive Species = Problems Biological/Environmental Food chain Habitat Water quality Water resource industry Toxic accumulations Chemical Degradation Flow Restriction Roughening (friction loss) Blockage Quagga mussel, Lake Havasu Jan Byssal threads
6 April 2013 Hoover Dam Pressure Relief Valve Shaft Corrosion
7 January 2013 Parker Dam Trash Rack Blockage
8 October 2007 Davis Dam Fixed Wheel Gate Blockage
9 Fire Protection & Other Cooling Water Systems Need Protection Transformer Cooling Water Fire Nozzles
10 Penstock Interior Surfaces Inspection Penstock Drain Heavy Settling Mussel Shell Debris in Penstock serving Multiple Laterals
11 October 2010 Penstock Belly Drain
12 Hoover Dam Generator Packing Area Problematic Mussel Fouling Small water opening to supply packing stuffing box
13 Parker Dam Biofouling Heat Exchangers and HVAC Systems 2014 Clogged HVAC Control Valve Cooling Water Heat Exchanger
14 Heat Exchangers 2016 Corp of Engineer Hydro Power Plant Asian Clams
15 Corp of Engineers Facility 2 years After Adult Mussel Finding
16 Reclamation Lower Colorado Region Research Activities Installed bio-boxes Tested micro-filtration systems - (40-80 micron) Fish Screens Resistance to Mussels Evaluating water jetting system for exterior cleaning Evaluating anti-foul coatings and materials to resist mussels (Dr. Allen Skaja, TSC Denver) Evaluation of Zequanox treatment (completed) Copper Ion Generator Copper Evaluation as Molluskcide (completed) Evaluating ultra-violet light treatment (on-going)
17 Installed Bio-Box Sampler for Monitoring Mussels settling on plates Cooling water inlet from reservoir
18 Self Cleaning Ballast Safe Filter Pre-strainer (filter) Filter Cartridge 40 micron
19 Parker Dam Trash Rake Coating Research Summer 2013
20 Controlling Mussels at Davis Dam Bullhead City, AZ; Colorado River Five turbine, 240 MW hydropower facility Each subsystem has a separate cooling water system 4000 gpm per cooling water subsystem
21 Treatment Monthly/Yearly Product Pricing for Davis Dam (January 2013) $16,000 $14,000 Normal Flow 3800 GPM $13, Per Month $137,000,000 Per Year One Unit $685,000 Per Year - Five Units $12,000 $10,000 Minimum Flow 1500 GPM $ Per Month $78,000 Per Year One Unit $390,000 Per Year - Five Units $8,000 $6,000 $4,000 $2,000 Costs based on average run time of 10 Months, BI-Weekly Treatments. $ Cooling Water Flow Rate (gpm per unit)
22 Copper Ion Generator Unit Molluscicide Approved for open waters
23 Conventional UV System (Research) Hoover Dam Cooling Water Mussel Control August 2010, started evaluation of 2 lamp conventional UV system April 2011, upgraded to 4 lamp conventional UV system to increase dosage
24 HOD UV Dosage Response Evaluation for Settlement Prevention of Mussels UV equipment cost $50-75K 1250 gpm UVT 85% Dosage 100 mj/cm2 Power operational cost $2500/yr or $0.035/kwh UV equipment cost $ K 4000 gpm UVT 85% Dosage 100 mj/cm2
25 Operation principles: Stainless Air Block Quartz Tube 25
26 Power Plant Mussel Control System Atlantium (HOD) UV Light System $120K with UVT of 85 dosage of 100 mj/cm2 HOD UV Cooling Water System installed July 2013 on a 4000 GPM system UV dose measured in real-time
27 Power Plant Parker Dam Mussel Control System HOD UV Cooling Water System Installed Nov GPM system Self Cleaning Strainer Wipers and Lamps
28 Full Scale results Settlement control Success!! Extraordinary Very Low Doses Strainer w/o HOD Strainer with HOD
29 Freshwater Colonial Hydroid Prior to HOD UV at Parker Dam
30 Hydroid Study Before & After HOD UV Treatment at Parker Dam
31 Parker Dam Cooling Water Heat Exchanger Before Atlantium HOD UV After Atlantium HOD UV
32 Acknowledgements RNT Consulting Renata Claudi Parker Dam Operations Personnel John Steffen Davis Dam Operations Personnel Vince Lammers Reclamation Researcher Sherri F. Pucherelli Bureau of Reclamation Technical Service Center (Denver) Joe Kubitschek Suppliers Atlantium Dennis Bitter
33 QUESTIONS Leonard Willett Mussel Solutions E: Willett EnviroTek T: (702) VALIDATION REPORTS Renata Claudi, M.Sc., /Articles.aspx
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