This document is an evaluation of the BioTrol, Inc., Aqueous Treatment System (BATS), a fixed-film, aerobic biological treatment process for contaminated groundwaters and other wastewaters. This report summarizes and analyzes the results of the Superfund Innovative Technology Evaluation (SITE) Program’s six week demonstration at the MacGillis and Gibbs Company wood preserving site in New Bright...

The removal of per- and polyfluoroalkyl substances (PFASs) presents a challenge for drinking water providers. Guidelines PFAS concentrations in final are regularly updated to ever-decreasing values, conventional treatment plants not designed remove PFASs. Currently, the most frequently used technique, adsorption granular activated carbon (GAC), is often considered challenging. High-pressure mem...

The literature on chemical cleaning of polymeric hollow fibre ultrafiltration and microfiltration membranes used in the filtration of water for municipal water supply is reviewed. The review considers the chemical cleaning mechanism, and the perceived link between this and membrane fouling by natural organic matter (NOM) – the principal foulant in municipal potable water applications. Existing ...

Using a modern design for a nuclear power plant as a point of departure, this study examines the enhancement of protection which may be achieved by changes to the des ign and the impacts associated with the changes. These changes include concepts such as complete physical separation of redundant trains of safety equipment, hardened enclosures for water storage tanks, and hardened shutdown heat ...

Minimal liquid discharge (MLD) in greenhouses minimizes the volume of discharged wastewater, thereby increasing effluent that may be reused. Sodium accumulation wastewater is often considered main bottleneck to achieving 100% reuse. Consequently, have begun adopting reverse osmosis (RO), most commonly used desalination technology for treatment. RO removes ions from indiscriminately, including m...

Anion exchange resins are important tools for the removal of harmful anionic contaminants from drinking water, but their use has been linked to the presence of carcinogenic nitrosamines in treated drinking water. In bench-scale batch and column experiments, anion exchange resins from a large, representative group were investigated as sources of the nitrosamines N-nitrosodimethylamine (NDMA), N-...

Covalent bonding of graphene oxide quantum dots (GOQDs) onto amino modified polyvinylidene fluoride (PVDF) membrane has generated a new type of nano-carbon functionalized membrane with significantly enhanced antibacterial and antibiofouling properties. A continuous filtration test using E. coli containing feedwater shows that the relative flux drop over GOQDs modified PVDF is 23%, which is sign...

The objective of this program is to design, construct operate, test, and evaluate a prototype integrated monitoring and diagnostic system for a nuclear power plant. It is anticipated that this technology will have wide application to other complex systems (e.g., fossil power plants, chemical processing plants, and possibly air traffic control systems). Over the past decade, the University of Te...