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Aerofloat’s innovative technology lets houseboats clean their greywater

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Clean water is a precious commodity. Rigorous restrictions mean cleaning greywater is becoming more imperative. Australian family-owned and run Aerofloat™ Pty Ltd. is making a big splash with this.

Aerofloat designs, manufactures and installs simple, affordable systems that treat industrial wastewater and greywater using Dissolved Air Flotation (DAF) principles. Its patented system is compact and mechanically simple.

Aerofloat water treatment device

DAF systems normally utilize a chemical coagulant mixed with the wastewater, causing the pollutants to bind together. Air is added to the treated water under pressure, then quickly decompressed, forming millions of microscopic air bubbles. The bubbles mix with the wastewater and coagulated pollutants and rise to the water’s surface where mechanical scrapers remove the floating solids. This system requires many moving parts and lots of energy to work.

Aerofloat, however, created a system that significantly cuts the energy needed and reduces the cost by about half. With its system, wastewater is collected in a small, enclosed tank, fitted with a funnel at the top. The chemical coagulant is added and compressed air is released into the tank. The water level in the tank then increases and foam is pushed out of the funnel and removed, eliminating the need for scrapers.

Aerofloat & House boat with canoe

Patented in several countries – including India and the U.S. – the company has created 7 different models for varying applications. Their smallest product, Aerofloat 7, was designed specifically to treat greywater from houseboats. But this remarkable technology is now being used in other industries, including food and beverage, mining, even vegetable oil manufacturing. Its benefits make it very attractive: it saves large amounts of water, it’s compact and it’s affordable. A triple threat winner!

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