The Orange County Water District’s (OCWD) Groundwater Replenishment System (GWRS) is a 100 mgd indirect potable reuse facility located in Fountain Valley, California. This facility has been in operation since 2008 and was recently expanded from 70 mgd to 100 mgd after a three year construction project completed in June 2015. This facility treats secondary effluent wastewater from the Orange County Sanitation District using microfiltration (MF) followed by reverse osmosis (RO) and advanced oxidation (AOP) using ultraviolet light (UV) with hydrogren peroxide. Operation of a facility of this size and complexity has afforeded OCWD the chance to learn more about advanced treatment and issues associated with the reuse of secondary effluent wastewater. This presentation will focus on the treatment technologies used in the GWRS, the issues associated with its operation, lessons learned, and operating costs. It is hoped this information will be of value to other utilities considering using advanced treatment technologies (membranes and advanced oxidation) and offer information on the regulatory issues associated with their use.
This presentation is available to AMTA Members only.
- Mehul Patel, PE
- Orange County Water District
- AMTA/NWMOA/WEF Technology Transfer Workshop, Vancouver, WA
- AMTA/NWMOA/WEF Technology Transfer Workshop
- Indirect Potable Reuse, Groundwater Recharge and Seawater Intrusion, Microfiltration followed by Reverse Osmosis and UV/AOP