Pacific Island Pump Station – Environmental Protection in Samoa

The American Samoa Power Authority is upgrading its wastewater infrastructure on Tutuila Island, home of the U.S. territory’s capital, Pago Pago. Traditionally, island villages use septic systems for household sewage treatment. The close proximity to the ocean is cause for environmental concerns. The Power Authority has begun a long-term plan to convert village septic systems to municipal sewer collection feeding the island’s wastewater treatment plants. At Fatu Ma Futi village the coastline is quite flat. Ditches for piping are limited by the water table to 5 feet deep. This situation required the utility to explore alternatives to a traditional gravity sewer system.

Romtec Utilities designed, supplied and delivered a package sewage pump station and assisted the Power Authority in its installation. Lateral sewer lines from village homes were tied into the precast concrete wet well and the sewage lift station began operation in September, 2006. Romtec Utilities also provided operation and maintenance training provided to the Power Authority staff. The duty point of the duplex submersible pump wastewater lift station is 119 GPM @ 32′ TDH.

Click here to read more about this project in WaterWorld International.
THIS ROMTEC UTILITIES SYSTEM INCLUDED

• Power Authority specified: MultiTrode MT2PC controller, MultiTrode PumpView SCADA system
• Precast concrete wet well: 6’ dia. x 10’ deep, fall & confined space entry control, pedestrian rated hatch, fiberglass Flygt TOP-design self-cleaning sump
• Pump disconnect panel: with free air stand, cable hatch
• Piping & accessories: all stainless steel
• ITT Flygt pumps: NP3085 MT, 3 HP
• Level monitoring & control: Primary – MultiTrode probe, Redundant / Back-up – MultiTrode probe w/MTR relays
• Precast concrete valve vault: Pedestrian-rated hatch, 4″ system, check & plug valves, discharge pressure gauge, by-pass pumping port
• Sewer lift station control panel: UL listed
• Telemetry: telephone alarming, cellular web-based SCADA system

Services included with every Romtec Utilities Pump/Lift Station

Free pump/lift station sizing, pump performance curve, design proposal, quotation
All pump/lift station engineering – structural, mechanical, electrical – coordination with site engineer(s)
Pumping system submittals – CAD drawings, design and materials specifications
Sewer/water regulatory agency coordination and submittal approval assistance
Factory assembly of complete pre-packaged lift stations (prefabricated pumping systems)
Coordinated delivery of complete pump station to project site
On-site construction advisor and pump station start-up services
Operation and Maintenance (O&M) manuals
On-site training of operation and maintenance personnel