• Pacific Islands have no fossil-fuel reserve; but they are rich in renewable energy including constant trade winds and strong solar radiation.

• Pacific islands have plenty of brackish groundwater.

• To protect marine environment requires high quality of aquaculture effluent

Background

Water Table

Brackish

Water

Mean Sea Level

OceanCaprock

Saltwater

Dikes Freshwater Lens

Basal Water Lens on Hawaii Islands

Reference:Liu, C.C.K., and J. Dai (2012). Seawater intrusion and sustainable yield of basal aquifers, Journal of the American Water Resources Association (JAWRA), 48(5):861-870.

Average wind speed on Oahu, Hawaii

Solar map of Oahu, Hawaii

Objective

To develop a renewable-energy-driven desalination and water Purification system for Pacific islands and remote communities where both freshwater and electricity are in short supply.

(b) System Design of a Renewable-Energy-Driven RO System

RefgerenceLiu, C.C.K., Park, J.W., Migita, R. and Qing, G. (2002). Prototype Experiments of a Wind-Driven Reverse Osmosis Desalination System, Desalination, Vol. 150, No. 3, pp. 277-287.

Windmill/pumping

System Operation Control with Solar Energy