Aqua Services & Engineering, a company of the global Veolia Water Solutions & Technologies operating in Namibia, has secured a contract to upgrade and refurbish a 400 m3/day seawater desalination plant in Walvis Bay. The project will help increase potable water supply for domestic use, and provide enough processed water to a Walvis Bay fish factory.
The source seawater's high organic content requires that ASE adopts an air flotation filtration system as a pre-treatment step to make it suitable for further treatment by reverse osmosis (RO) membranes. "Our engineers will introduce a vortex mixer to generate micro bubbles, which are fed into the flocculated raw seawater stream," says Christian Stöck, Managing Director at ASE. "This will help lighter organic particles float to the surface, and allow for heavier particles to settle."
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