LVL facility

WRD Leo J. Vander Lans AWTF

The state-of-the-art facility receives tertiary-treated water from the Sanitation Districts and provides a multi-barrier treatment through a process train that includes microfiltration (MF), reverse-osmosis (RO), and ultraviolet light (UV). The facility was built in 2003 and subsequently expanded in late 2014. The expansion increased the facility’s capacity from 3 million gallons per day to 8 million gallons per day, providing up to 100% of the demand for the seawater barrier.

The 2014 facility expansion added unique treatment process enhancements to reduce the facility’s waste generations. The process enhancements include (1) a third-stage RO to increase recovery from the original 85% to 92.5%; and (2) a MF backwash waste treatment system that recovers approximately 95% of the backwash waste stream through dissolve air flotation (DAF) treatment and a follow-up polishing MF. With these process enhancements, the facility has been expanded to almost triple the production capacity without any increases in waste generations. The Long Beach Water Department is responsible for operation and maintenance of the treatment plant under contract with WRD.