Moskito Island

Gemini Water designed, fabricated, installed, and commissioned a 60,000 US gallon per day (GPD) reverse osmosis expansion for the desalination plant at South Bay, Moskito Island.

The project expanded the facility’s treatment capacity and improved year-round water quality and system reliability. Key upgrades included:

• A second 60,000 GPD seawater RO unit (Train B)
• Expanded media and cartridge filtration
• Upgrades to the intake priming system to reduce entrained air
• A second calcite contactor and automated chemical dosing
• Enhanced membrane flushing to reduce corrosion and support biocide use during periods of inactivity
• Energy recovery using an ERI device to minimize energy consumption

The new skid-mounted RO system was designed to integrate with the existing piping and electrical infrastructure and uses corrosion-resistant materials, including duplex stainless steel and AL6XN high-pressure piping.