BQE Water, Inc. engages in the provision of water treatment and management for the mining and metallurgical industry. The company is headquartered in Vancouver, British Columbia. The firm has the expertise and intellectual property to support the mining and metallurgical industries in reducing life cycle costs and risks associated with water. Its sulphide precipitation technologies use biological or chemical sources of sulphide to selectively remove dissolved metals from mining wastewater. Its ion exchange-based technologies use resins to selectively remove sulphate and hardness from process waters to produce treated water compliant with sulphate discharge limits and a solid gypsum by-product. The company offers a process that combines ion exchange and electrochemical reduction to selectively remove selenium from mining wastewater down to single-digit ppb levels. The company offers the SART process to remove the metallurgical interference of cyanide-soluble metals and to recover and recycle cyanide in gold processing.