The changing landscape of compounds of emerging concern, microbials and pathogens, and disinfection byproducts in drinking water, as well as increasingly restrictive discharge limits for receiving waters and the need to diversify water supplies through potable reuse, have necessitated a shift beyond conventional treatment for both drinking water and wastewater utilities.
Advanced treatment strategies are used by drinking water and wastewater treatment plants to provide treatment to a higher level than conventional treatment. Drinking water plants may employ advanced treatment processes such as activated carbon adsorption, membrane treatment, ozone, ultraviolet (UV) disinfection, and biofiltration, or a combination thereof. Many similar advanced treatment strategies have also been added to wastewater treatment plants to further remove solids, organic materials, nutrients, and toxic materials—often with the goal of producing potable water through indirect or direct reuse.
Trinity River Authority & Biofiltration
In 2012, Trinity River Authority (TRA) undertook a WRF research project to investigate whether enhanced biofiltration could enable a utility to retain previously removed manganese on the filter media and provide long-term water quality improvements, including taste and odor control and prevention of manganese breakthroughs.