Water reuse process presented

The technology involves use of waste heat from turbines passing through a recovery unit that increases temperature to disinfect wastewater in a safe and cost-effective way

01 May 2013

Pasteurisation Technology Group (PTG), innovator of the only wastewater disinfection process that creates renewable energy, exhibited its technology to water-quality and wastewater professionals attending the California Water Environment Association (CWEA)’s annual conference held in Palm Springs California in mid-April.

PTG’s system is a highly efficient, cost-effective and sustainable solution that enables the reuse of valuable water. The technology is attracting the attention of businesses and municipalities that want to realise substantial energy cost savings and eliminate toxic chemicals through alternatives to traditional chlorine- and UV-based wastewater disinfection systems. PTG’s technology has been certified by the state of California for non-potable reuse under the stringent standards of Title 22.

PTG’s patented technology is the first and only technology to combine wastewater disinfection with the generation of renewable energy. Its integrated systems can use available waste by-products (such as biogas or biomass), or natural gas, to power a turbine or engine that generates electricity. The turbine’s hot exhaust air (which is typically wasted) is passed through a waste-heat recovery unit that increases the temperature to disinfect the wastewater. PTG’s intelligent software efficiently optimises energy and water flow throughout the integrated system. PTG’s systems are significantly more cost-effective and energy-efficient than other disinfection methods. And, unlike other wastewater disinfection approaches, PTG’s technology is sustainable since it does not require toxic chemicals such as chlorine, or costly electrical power and expensive UV lamps. As a result, PTG’s systems fit a broad range of applications in both the municipal and industrial market sectors.

PTG is a rapidly growing, venture capital-backed company that is revolutionising the disinfection of wastewater. PTG’s systems feature its patented “two-for-one” technology that combines eco-friendly wastewater disinfection with the generation of renewable energy. PTG’s process is one of only a handful of technologies to pass the stringent standards of Title 22 in the state of California for the disinfection of water for reuse. Its technology has also been officially recognized in the EPA’s influential Guidelines for Water Reuse. By channeling the typically wasted exhaust heat from a turbine or engine to disinfect wastewater, PTG’s process is able to deliver the most energy-efficient and lowest-cost solution on the market.

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