C&EN: "Veolia opens PFAS removal plant in Delaware"

Via C&EN, this news (article by Craig Bettenhausen): 

Wilmington, Delaware—At a water treatment plant outside Wilmington, Delaware, last week, officials cut the ribbon on a facility that will remove per- and polyfluoroalkyl substances (PFAS) from the water consumed by more than 100,000 Delaware residents. The facility, one of the largest of its kind in the US, is part of an emerging business in getting the unwanted fluorochemicals out of drinking water.

The complex represents a $35 million investment by Veolia, which operates the public water utility for the area. State and company officials at the event said the utility will ask for a 44% rate increase to make the investment pay off and cover the plant’s operation and maintenance. For an average household, they said, that will mean about $19 more each month. In similar infrastructure upgrades across the country, the actual rate increase is usually smaller than the utility’s initial proposal.

The installation consists of 42 filter tanks, each about the size of a shipping container, in a building about the size of a hockey rink. Larry Finnicum, Veolia’s mid-Atlantic regional president, said each tank is filled with granulated activated carbon (GAC), a filtering media provided by Calgon Carbon. Finnicum said Calgon’s GAC was the top performer in pilot tests on the plant’s source water, but the design of the tanks allows operators to switch filter media if better materials emerge or water conditions change.

Mohamed Ateia Ibrahim, an environmental engineer who studies PFAS treatment and substitution, tells C&EN that the upgrade is significant from the standpoints of public health and compliance. “The project uses GAC, which is a primary solution for water utilities taking proactive actions against PFAS,” he says. “It is a proven and reliable technology, but it also comes with persistent challenges that the water treatment industry continues to face.”

It will be interesting to see how successful this facility is (i.e. does it turn into an enormous boondoggle?) and if it stays relatively inexpensive for areas that have serious PFAS contamination, I predict that this will be the first of many...