Oxidation Reduction Potential (ORP) can be a valuable tool for seeing what is happening in unit processes like anoxic and anaerobic tanks

A continuous-fill, intermittent-discharge sequencing batch reactor provides high performance in biological nutrient removal in a treatment plant facing high infiltration

A Class A biosolids process keeps Stewartstown (Pa.) operations simple — and keeps area farmers coming back for more

George Calloway and Joe Derbyshire combined knowledge and expertise to transform their facility into an award-winning nutrient removal plant.

When it comes to operating an innovative activated sludge treatment plant, the small crew at RAE Water & Sewer in Montana does quite nicely

The City of Mansfield (Ark.) gets reliable compliance and a thriving discharge creek after replacing an old extended aeration plant with a special activated sludge process