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Gross-Wen Technologies, based in Slater, Iowa, has obtained a $1 million loan from the Iowa Economic Development Authority to enhance its algae-based wastewater treatment operations. The funding will aid in hiring staff and expanding market reach, following the company's success with its patented technology. Gross-Wen’s system removes nitrogen and phosphorus from wastewater using algae and has installations in multiple Iowa cities and a significant facility in Pasco, Washington, which reuses 1.5 billion gallons of wastewater annually.