The Hyperion Water Treatment Plant currently treats most of the wastewater generated in the City of Los Angeles, other nearby cities, and unincorporated areas in the metro region. Located on a 144–acre site adjacent to the Santa Monica Bay and Los Angeles International Airport, the original plant was expanded in 1956 to handle an average flow of 400 million gallons per day. Only 25 percent of the wastewater received secondary treatment. In December 1985, the California State Water Quality Control Board upgraded the requirements and mandated full secondary treatment. The subsequent upgrades included the construction and renovation of various equipment and facilities throughout the plant. DMJM engineers designed 11 new buildings with headworks, four new primary clarifiers, 20 new aeration tanks, and a new aeration system to increase secondary treatment. Project designs included the renovation of 32 aeration basins and existing headworks, and the relocation of influent sewers. |
