Pilot-scale integrated fixed-film activated sludge (IFAS) and non-IFAS control systems were compared, with respect to overall performance and functional behaviors and microbial population composition ...

Twenty-first century technology is gaining momentum in the staid business of wastewater treatment. Since the federal Water Pollution Control Act of 1972 fueled the buildout of the nation’s current ...

The Metro Denver Sewage District has been operating both a conventional air activated sludge system and a high-purity-oxygen activated sludge system since 1977. The district conducted a performance ...

When high-rate processes first appeared for municipal wastewater treatment in the early 1980s, they were restricted to a handful of proprietary processes such as the biological aerated filter (BAF).

Next-generation Sequencing Bath Reactors are rapidly making inroads into WwTWs. Ian Sully takes an in-depth look at the technology, and reveals how it is being used at Wessex Water's Charmouth site.