23 Mar '12, 5pm

Technology Spotlight: Cleans Dirty Water Using Renewable Energy

A start-up company in the water treatment business is commercializing a natural pasteurization process that cleans up dirty wastewater using renewable energy. Based in San Leandro, California, Pasteurization Technology Group recently got a $1 million infusion from EIC Ventures, which invests in early stage companies. Here's how it works: during the process of disinfecting wastewater, biogas is created as a natural by-product, which is used to power turbines. The hot exhaust air raises the temperature of the wastewater, which disinfects it. Once it's disinfected, the water can be recycled and used again. More details: The hot exhaust air from the turbine (energy that is typically wasted) is passed through a series of heat exchangers that raise the temperature of the wastewater to a level that disinfects the wastewater stream. Unlike commonly used wastewater disinfection app...

Full article: http://www.sustainablebusiness.com/index.cfm/go/news.disp...

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