Targeting Zeta Potential Value Versus Clarified Turbidity as Preatment to MF/UF
A major drawback of utilizing clarification/sedimentation ahead of low-pressure membranes is the issue of organic polymer addition (clarifier aid). Most membrane suppliers and design engineers restrict the use of this […]
Pretreatment Review for NF and LPRO Membranes: Literature Review and Case Studies
Selection of an appropriate pretreatment process for a nanofiltration (NF) or low-pressure reverse osmosis (LPRO) system is critical to optimizing recovery, water quality, and clean-in-place (CIP) requirements. Key pretreatment considerations […]
Exceeding 90% Recovery with Conventional and Closed-Circuit RO: Results from Parallel Pilot Systems
For inland reverse osmosis (RO) systems, brine disposal is often difficult and costly, and there is significant interest in increasing recovery and reducing brine volumes. The City of Buckeye, AZ […]
Maximizing Potable Water Production at EMWD’s Desalination Complex via CCRO Pilot Testing
The Eastern Municipal Water District (EMWD) currently uses reverse osmosis (RO) at it’s Menifee and Perris I Desalter to produce drinking water from otherwise unusable brackish groundwater. A third RO […]
Brine Minimization Using Closed Circuit Reverse Osmosis (CCRO)
Marine Corps Air Ground Combat Center (MCAGCC) Twentynine Palms is in the Mojave Desert in California and is one of the largest military training areas in the nation. MCAGCC relies […]
Enhanced Wastewater Reclamation with Carbon Molecular Sieves
The global water crisis demands robust technologies to support reuse of impaired water sources. Direct potable reuse (DPR) has been limited by the poor ability of available technology to completely […]
Enhanced Water Recovery by a Combination of Photobiological Process and Secondary Reverse Osmosis
Overcoming water scarcity and meeting future water demand for rapidly growing populations are some of the biggest challenges facing the water industry, scientific community, and government agencies. To achieve the […]
Advancing Membrane Technologies for Phosphorous and Nitrogen Recovery from Human Urine
Closing the nutrient loop by recovering P and N from wastewater is crucial for protecting aquatic environments from pollutants and producing sufficient fertilizer to support growing populations. The high concentrations […]
Vapor-gap Reverse Osmosis for Desalination and Water Reuse
Thin-film composite polyamide membranes are currently used in reverse osmosis (RO) yet they are inherently limited from their poor rejections towards small uncharged pollutants and easily damaged by chemical oxidants […]
Nanofibrous Membranes for the Selective Recovery of Nonaqueous Phases from Industrial Brines
Mixtures of hydrocarbons and water are ubiquitous across natural and industrial flows. Such mixtures present environmental challenges and economic opportunities. The recovery of hydrocarbons from oil and gas produced waters […]
