An environmental engineer, he invented a biological method to remove nitrogen and phosphorous from wastewater, an advance that transformed the industry worldwide.

Treating hospital wastewater remains a major environmental and public-health challenge. Conventional methods such as membrane separation, oxidation, biological treatment, and chemical disinfection ...

Every day, food scraps disappear into trash bags, are hauled away and forgotten. But that waste could be turned into ...

Proven nanobubble technology restores wastewater lagoons faster and cheaper, unlocking scalable infrastructure ...

MWRA's Deer Island Wastewater Treatment Plant in Boston, Massachusetts. Photo courtesy of Massachusetts Water Resources Authority ...

Upgrades to an interceptor sewer line and Boonville's wastewater treatment plant have been delayed as the village tried to ...