In potable reuse, reverse osmosis (RO) is important for system-level salinity management and as a pathogen barrier in the treatment train. Scaling is a key driver of cost for RO systems because it increases energy use and leads to more frequent cleaning and replacement of membrane elements. Phosphate-induced scaling in particular has been identifie...

The objective of this study is to lower the energy and chemical use for the Full Advanced Train, required in California for potable reuse. The study offers an innovative approach to mitigate biological and organic fouling of membrane systems and enhance process water quality leading to reduced operating and maintenance (O&M) costs. This is accompli...

The current study summarizes findings of over 9-month long optimization study evaluating different chemical dosing strategies to address common scalants, such as calcium phosphate, on reverse osmosis membrane systems used in municipal wastewater treatment for potable reuse. The type of project testing different dose strategies in this case at demon...

Biological growth on reverse osmosis membranes can lead to many negative operational changes. Common practice to control biofouling is to maintain a chloramine residual in the feed water, however this can be damaging to the membrane surface overtime, ultimately leading to shortened life of the membranes. This presentation describes the use of short...