American Water funded to investigate low DO in MBRs

The WateReuse Research Foundation has awarded a research grant to American Water to investigate the impacts of low dissolved oxygen (DO) conditions at a full-scale membrane bioreactor (MBR) water reuse plant.

The project, valued at US$ 365,777, will focus on the operation of advanced MBRs under low DO conditions to maximize nitrogen removal. Researchers will monitor the process using continuous online analyzers.

The study will be conducted at the Fillmore Water Recycling Facility, an award‑winning zero-discharge water reuse plant that is designed, built and operated by American Water’s Contract Services Group for the city of Fillmore, California.

“The goal of this research is to produce high quality reclaimed water through a process that saves energy and reduces chemicals, while improving the treatment of emerging contaminants,” said Dr Helen Littleton, technical manager for commercial wastewater projects, American Water. “In addition, the project will examine whether these conditions will also improve the removal of pharmaceuticals and nitrosamine precursors. These are all issues faced by the reclaimed water industry.”

Littleton will be joined as co-principal investigator by Dr Zia Bukhari, senior environmental scientist. Dr Mark LeChevallier will serve as internal advisor.