Energy Savings by Design for New Advanced Treatment Plant for Groundwater Recharge in Southern California
The Water Replenishment District (WRD) is constructing a new 13,000 acre-feet per year Advanced Water Treatment Facility (AWTF) in the city of Pico Rivera. The AWTF is part of an […]
Step-by-Step Procedure and Logistics of Replacing the 12 year old RO Membranes at the Five Forks Water Treatment Facility in Virginia
James City Service Authority (JCSA) has been successfully operating a 5.0 MGD brackish water RO plant since April 2005. Although the membranes were still meeting the water quality requirements, budget […]
Design Completion and Update on the Largest Ultrafiltration Retrofit in Florida for Lake Manatee WTP
This abstract will give an update on design and procurement of Florida’s largest low-pressure membrane facility: i.e., 54-mgd ultrafiltration (UF) retrofit at Lake Manatee Water Treatment Plant in Manatee County. […]
How Much Concentrate Can You Squeeze With Closed Circuit Desalination and What to Consider
A traditional two-stage RO system was coupled with a 3rd-stage, semi-batch RO process to increase overall recovery above 92%. The CCD process was integrated as a 3rd-stage as it could […]
Comparison of Proven Technologies for Reverse Osmosis at 95% Recovery for a Full-scale Potable Reuse Facility
Padre Dam Municipal Water District is considering two technologies to achieve a high recovery with reverse osmosis for its upcoming advanced water purification facility. Pilot testing from 2016-2017 at Padre […]
Effect of Repetitive Chemical Cleaning on the Performance of Polymeric Nanofiltration Membranes
Chemical cleaning is a part of the membrane maintenance process and is usually performed when the permeate flux decreases by about 10% or when the pressure drop increases by about […]
Twin Turbochargers Provide High Permeate Recovery at Low Net Energy Consumption and Low Capital Cost in Megascale SWRO Systems
This study will compare conventional SWRO systems operating at 40-45% recovery utilizing currently available energy recovery devices with the twin turbocharger design operating at about 60% recovery. Also, the impact […]
Membrane Replacement, System Upgrades and Rehabilitation of a 25-Year-Old Nanofiltration System
This paper provides a summary of the membrane evaluation, condition assessment, evaluation results, design considerations for the system upgrade and a discussion of several items found during commissioning.
Planning for an Integrated Membrane Surface Water Treatment Plant – An Owner?s Perspective
To meet the current and future water demand needs, the city of Pearland is planning to construct a new membrane Surface Water Treatment Plant. The plant will have a production […]
Avoiding Tunnel Vision: High-Recovery Membranes in the Rocky Mountains
A newly built zero-liquid discharge industrial wastewater treatment plant for the treatment of groundwater flow from a railroad tunnel provides an excellent example of an elegant solution to a highly […]
