Presentations by Elise Chen
Matches: 5
Innovative approach to controlling biological and organic fouling of membrane systems.
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...
Optimization of Chemical O&M Costs for the Reverse Osmosis Membrane System Treating Reclaimed Water at up to 85% Water Recovery
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...
Application of ATP and Rejection of Chloramines by Reverse Osmosis Membranes for Detection of Biological Fouling
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...
Effects of Chloramines and Bromamines Residuals on RO Membranes in Potable Reuse
This paper will focus on brining an important issue of oxidative damage of RO membranes by the often overlooked bromamines residual that can form in waters containing high levels of bromide, such as municipal wastewater. The key issue for RO system operators and managers is understanding how the potential for the formation bromamines residual depen...
Operator Training on MF/UF and RO?Understanding Critical Operating Points
The proliferation of water reuse applications has introduced a growing need to provide education and training on operating and maintaining the treatment processes in these treatment trains. Membrane filtration and reverse osmosis are essential components of the advanced treatment trains used in water reuse. There is a growing demand for training ma...