Chlorine Dioxide Solution Eliminates Biofouling without Damage to Membranes
Availablity of a stable, chlorine free chlorine dioxide (ClO2) shipped as ready to use 3000 ppm solution in ultra pure water is finding use as a disinfectant without damage to […]
Development of High Performance Pressure Retarded Osmosis Membrane and Spiral Wound PRO Module
Discussion of developing membranes to reduce energy required by employing innovative technologies such as pressure retarded osmosis (PRO) as part of a hybrid process with traditional RO.
A Surfactant-Based Novel Draw Solution for Forward Osmosis Process
Research a new FO draw solution of EDTA-2Na combined with a nonionic surfactant (Triton X-100) to reach zero salt reverse sault diffusion. Assess the efficiency of FO performance with various […]
Zeolite-embedded Polyelectrolyte Composite Membrane with Enhanced Performance for Forward Osmosis
This paper describes a layer-by-layer (LbL) method to sandwich Linde type A (LTA) zeolite nanoparticles between two polyelectrolytes, polyacrylic acid (PAA) and polyethylenimine (PEI), on a polyacrylonitrile (PAN) support layer. […]
Treatment Trifecta: West Basin Wins Big with Ozone, Coagulation, & PVDF Membranes
West Basin Municipal Water District (West Basin) is known as an early adopter of membrane technologies for both industrial and potable reuse. West Basin has experienced severe fouling of its […]
Coagulation Optimization: Pilot-Scale Analysis of UF Fouling and DBP Formation
The most widely applied pre-treatment to UF is coagulation, often to aggregate fractions of organic matter that cause fouling or those fractions that form disinfection by-products (DBPs) upon chlorination. Recent […]
Pilot-Scale Assessment of Pretreatment Alternatives for Enhancing a Conventional-Ultrafiltration Surface Water Plant
County of Maui Dept. of Water Supply with the Water Research Fouundation and the University of Central Fla. in project #4477 investigate pretreatment options at the Olinda WTP for controlling […]
Modular Axial Piston Pumps Bring Efficiencies
Life cycle cost analysis and application review of water lubricated Axiel Piston (AP) positive displacement pumps vs. centrifugal (turbine) pumps with energy recovery devise (EDR) in SWRO systems.
Energy Consumption Optimization of a Small Scale PV-RO for Remote Rural Areas
In this paper, energy consumption optimization for Brackish Water RO (BWRO) systems in small, remote, rural communities is investigated. The key control factors for minimizing BWRO energy consumption include pressure, […]
Energy Recovery in Desalination
Based on over pumping, saltwater intrusion, or contamination from nutrient loading, studies are indicating that aquifers in these states are being taxed to unsustainable levels. Utilities then must find new […]
