HEADWORKS: New screenings and grit removal.
PRIMARY TREATMENT: floating grease is skimmed off and sinking solids are removed. Redundant primary clarifier for reliability and maintenance.
EQUALIZATION STORAGE & PEAK FLOW TRIMMING: Eliminates blending when large stormwater flows enter the plant and improves treatment quality.
SECONDARY TREATMENT: Natural bacteria consume organic solids using refurbished fixed film reactors. Increased capacity from 6 million gallons per day (MGD) to 9 MGD.
TERTIARY TREATEMENT (POLISHING): Improved treatment using 5 and 10 micron filters (a human hair is 50 microns thick). Increased capacity from 1 MGD to 6 MGD.
DISINFECTION: Chlorine disinfection and then dichlorination to protect Bay life.
SOLIDS HANDLING: using improved facilities and new thickener tank and digester.