The principle of centrifugal separation is ancient, but its modern industrial application is a feat of precision engineering.

What comes out of our wastewater treatment plants may not be very appealing, but the real problem is what is left behind after water treatment. Wastewater plants produce a liquid sludge that is ...

BELLOWS FALLS — Bellows Falls has agreed to a new experimental pilot plan to dry out the sludge generated at the village’s sewage treatment plant in an effort to bring down costs and find a more ...