A New AwwaRF/CEC Research Project: Zero Liquid Discharge and VolumeMinimization for Inland Desalination

摘要

A new research project, Zero Liquid Discharge and Volume Minimization for InlandrnDesalination, is underway to develop a treatment technique that reduces energyrnconsumption and treatment costs for inland desalination with zero liquid dischargern(ZLD). The project is supported by AwwaRF and the California Energy Commissionrn(CEC). The technical approach involves alternating applications of reverse osmosis withrnprecipitation processes designed to remove the least soluble salts under conditions ofrncontrolled mixing, salt seeding, chemical addition, residence time, temperature, and pH.rnThe research methodology will include computer modeling, bench-scale testing, andrnpilot-scale testing. Testing will be conducted on brackish groundwater and reclaimedrnwater provided by the project utility partners, City of Phoenix, Southern Nevada WaterrnAuthority (SNWA), City of Scottsdale, Beverly Hills, and San Antonio Water Systemrn(SAWS).