Terminal Island Wastewater Treatment Plant
The Advanced Water Purification Facilities (AWPF) Ultimate Expansion project will increase the advanced water purification treatment capacity from 6-to 1-mgd product water. The $60M project includes additional MF, RO, and AOP systems and a balance of upgrades to existing pumping stations and systems, chemical addition system, auxiliary systems, and utilities. The advanced oxidation process (AOP) System using ultraviolet irradiation/sodium hypochlorite (UV/NaOCl) will replace the existing Phase 1 disinfection system. To operate AWPF at a constant flow and maximize production, the project also includes a 2-MG tertiary effluent equalization tank upstream of the AWPF.
- Doubles capacity of plant flow, producing 12 million gallons per day of advanced purified recycled water.
- Recycled water from Terminal Island AWPF is currently used at the Dominguez Gap Barrier for seawater intrusion barrier injection, protecting the quality of the West Coast Groundwater Basin.
The Phase 1 AWPF, completed in 2002, has been operated successfully with a production of 5 mgd of potable quality product water. The existing AWPF includes Microfiltration (MF), Reverse Osmosis (RO), Disinfection (chlorination) and post-treatment with lime addition. The MF system was expanded by two CMF skids in 2012 to secure MF pretreatment and Phase 1 AWPF design capacity of 6 mgd. Post-treatment treatment is being replaced with NaOH and CaCl2 for pH control and limited re-mineralization, respectfully.