Ecology is holding a 30-day public comment period for a Notice of Construction Application proposing to modify the Effluent Treatment Facility (ETF) associated with the Liquid Effluent Retention Facility.
Energy is proposing to modify the ETF which is used to treat certain wastewater streams from the Hanford Site to ensure they meet state discharge standards for pH, organic and specific chemical content, suspended solids, and other parameters.
Energy has determined that the ETF ultraviolet oxidation system does not have sufficient capacity to break down acetonitrile expected in a stream from the Waste Treatment and Immobilization Plant’s Effluent Management Facility, once it is operational.
Energy will install a steam stripper and loadout system to separate acetonitrile into a more concentrated wastewater stream for shipment and treatment off-site. Additionally, Energy is adding a brine loadout system to ship water containing concentrated salts off-site for treatment and disposal. This will be an alternative to drying brine in the existing thin film dryers at ETF.
Find out more about Hanford public comment periods.