Removing nitrogen from wastewater is a complicated challenge anywhere, but in Massachusetts, George Heufelder is working toward a simple solution. It is not big, not chemical, and not expensive. And it involves sawdust.Heufelder directs the Barnstable County Department of Health and Environment, which covers Cape Cod. The department also operates the Massachusetts Alternative Septic System Test Center to measure the performance of new technologies. But for nitrogen removal Heufelder turned to an older idea, as he explains to Pumper readers.Pumper: Do you have a problem with anoxic zones?Heufelder: There are some embayments stressed by an excess of nutrients, and while
