Researchers in the lab at Membrion. (Membrion Photo)

Seattle startup Membrion raised an additional $5.5 million from investors. The company, which spun out of the University of Washington, has created ceramic membranes for onsite wastewater treatment.

The funding adds to a $7 million Series B round, closing the round at $12.5 million. Membrion’s total funding is $23 million.

CEO and founder Greg Newbloom said in a release that following multiple pilot projects, the company has “multiple commercial installations coming on-line that will save each customer hundreds of thousands of dollars per year.”

Membrion’s main customers are U.S.-based, Fortune 100 firms that consume large quantities of water in their business operations. That includes companies in microelectronics, automotive, food and beverage, and oil and gas sectors.

The additional dollars come from Samsung Venture Investment Corporation and Lam Capital, with Indico Capital Partners, Harvard Business School New York Alumni Angel Group, New York Angels, and GiantLeap Capital joining the round.

The company was a finalist for the GeekWire Sustainable Innovation of the Year Award this past May.

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