Validation of an Arsenic Rejection Computer Model for RO/NF Membranes
Arsenic contamination in groundwater supplies has long been a problem, and membrane technology is among the efficient methods for its removal for prov..
A Novel Calcium Carbonate Scaling Model For Maximum Recovery And Inhibitor Dosages In Membrane Systems
Calcium carbonate (CaCO3) is the most frequently encountered scale in industrial reverse osmosis (RO) systems. The Langelier Saturation Index (LSI) ha..
The Impact of Ferrous Ion Oxidation on Silica Scaling in RO Systems
A 6 MGD reverse osmosis plant in South Texas that was using chlorine to oxidize arsenic for improved membrane rejection was experiencing severe membra..
Controlling Aluminum Silicate Formation in Membrane Separation Processes
Silica scaling is very common in reverse osmosis systems that operate at high recoveries. Whenever silica fouling/scaling occurs, autopsy results almo..
An Evaluation of Corrosion Control Additives for Potable RO Permeate
Corrosion inhibitors are frequently used as post-treatment chemicals for potable RO plants around the country, but few are actually effective. In many..
A Relationship Between Phosphate Scales and Silica Fouling in WasteWater RO Membrane Systems
Precipitation of calcium phosphate scale on RO membranes continues to be a major challenge for wastewater recycling facilities. In most cases, antisca..
Excessive Sulfuric Acid Dosing Resulting in Irreversible Scale Formation
Many consultants in the RO water treatment industry recommend sulfuric acid dosing into the feed water as a safety measure. This case study reviews a ..
Optimizing Scale Inhibition Costs in Reverse Osmosis Desalination Plants
Over the last few decades, advancements in technology and engineering design have allowed for the construction of reverse osmosis (RO) plants with inc..