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History / Mission

2004 – 2012

The company began manufacturing MF/UF ceramic membranes in conventional tubular and flat sheet configurations in 2004 at its Halberstadt, Germany manufacturing site. Conventional ceramic membranes have been successfully installed in numerous “tough to treat” applications where polymeric membranes were known to, or suspected of failing. Applications such as deep well aquifer treatment for drinking water justified the typical 4-5 times price premium of ceramics over polymeric membranes given the incompatibility of polymerics with the high temperature conditions posed by the application.  Historically, conventional ceramic membranes have been relegated to a narrow range of the most challenging applications given their comparatively higher manufacturing cost and resulting higher prices.

2012 – 2014

In 2012, the company was acquired by True North Venture Partners, a Chicago based venture capital firm focused on investments in in disruptive technologies holding the potential to transform and lead global industries in energy, water and waste. A broader management team based in Eden Prairie,  Minnesota was formed, and the company’s name was changed to Nanostone Water. Most importantly, significant resources were put in place to drive the next generation of ceramic membranes – A newly invented high surface area pressurized ceramic UF membrane module intended to provide well-recognized benefits of ceramic membranes at a price point competitive with polymeric membranes. This game-changing technology will make ceramic membrane technology affordable to a variety of MF/UF membrane applications for the first time. Nanostone Water conducted multiple pilot studies on our ceramic UF membrane throughout the world to optimize the product and the process design for target applications.

2014 – Present

Nanostone continued to invest in the production facility and field testing of the ceramic UF membrane modules. In 2015 the CM-131TM full scale ceramic ultrafiltration was introduced with 19m2 of active surface area. A number of successful projects were commissioned in 2016 in China on waste water reuse projects as well as a product makeup water treatment project in the USA. With successful performance in these projects the company moved to the development of the next generation CM-151TM ceramic ultrafiltration module with 20% more active surface area providing even better system economics as well as significant increase in production capacity at the factory in Halberstadt, Germany. The factory achieved ISO 9001 certification in March, 2016 and the CM-151 product achieved ANSI/NSF-61 drinking water certification for the USA in August, 2016. Additional certifications are in process for drinking water and waste water reuse applications to expand the applications into the municipal segments. Nanostone is excited to continue building successful references for waste water reuse projects in China and we are looking forward to development in the municipal segment in North America where the robust and long lasting ceramic ultrafilter membrane has the strongest value.

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