Filter Loading Evaluation for Water Reuse
Abstract
The California Water Recycling Criteria allows a maximum filter loading rate of 5 gpm/ft2. Higher loading rates would allow more water to be recycled with minimal cost implications. The impact of filter loading rate on filter performance and effluent quality was evaluated at a pilot-scale facility at the Monterey Regional Water Pollution Control Agency (MRWPCA) water recycling facility in Marina, California, and subsequently at two full-scale facilities in California. While the study evaluated filter loading rates ranging from 5 to 10 gpm/ft2, a loading rate of 7.5 gpm/ft2 was selected for detailed comparison to the regulatory limit of 5 gpm/ft2. The project, called the Filter Loading Evaluation for Water Reuse (FLEWR), addresses scientific, engineering, and regulatory gaps related to the impact of filter loading rate on granular media, rapid depth filtration of wastewater.
Originally funded as WERF project Reuse-02-03.