Frederick co-teaches a course each autumn quarter on Environmental Science and Policy in the Harris School of Public Policy Studies. He’s also a board member of the non-profit Center for the Transformation of Waste Technology, where Sheaffer is the managing director.
Sheaffer established the center in part to carry out an ambitious recycling project in Hammond, Indiana, that involves harnessing treated effluent to irrigate and fertilize cropland and for a host of other income-generating activities. “This project is about taking Hammond’s wastewater and turning it into wealth-producing resources,” Frederick said.
Frederick and Sheaffer met at a roundtable discussion organized by Robert Fefferman, Dean of the Physical Sciences Division. Sheaffer, the president and chairman of Sheaffer International, founded the environmental development company in 1996 to focus on wastewater reclamation and reuse.
Sheaffer told Frederick about his plans for Hammond, and Frederick immediately became involved. “When I see something that looks relevant, I like it,” Frederick said.
Frederick’s role in the project is to examine how it might affect the sequestration of atmospheric carbon. If the project sequesters more carbon than it emits, then the sale of carbon credits is one of several potential sources of income.Wastewater-recycling economics
Farmers need to put down 200 pounds of nitrogen on every acre of corn they grow, at a cost of $80 to $100 an acre or more. It costs approximately 75 cents a pound, meanwhile, for the Hammond Sanitary District’s treatment system to remove it. Tighter federal regulations may be in the offing, said District Manager Michael Unger, which would dramatically increase treatment costs.
“A plant like ours could spend tens of millions of dollars to get rid of all the nitrogen, so it’s very costly,” Unger said. But why pay to remove the nitrogen when it’s a potential resource? “Nitrogen fertilizer prices have gone as high as $1,200 a ton, maybe even higher,” he said.
The BP oil refinery in Whiting, Ind., sparked the water reuse project several years ago after announcing that it intended to increase the discharge of its effluents into Lake Michigan. Sheaffer initially approached BP with his idea. When that failed to work out, he opened discussions with Michael Unger, manager of Hammond’s Sanitary District.
The project will cost an estimated $129 million, but the revenues it creates can eventually retire the debt and pay for all operations and maintenance, according to Sheaffer. “The thing that’s exciting is the project can pay for itself,” he said.Sheaffer’s team completed a proof-of-concept study last summer. Next, with $2.86 million of planning and design funding, will come development of the plans and specifications for building the project. Sheaffer’s goal is to get the project operational within three years.
Building a self-sustaining system
“You can actually build a self-sustaining system,” Frederick said.
The Hammond Water Reuse Project’s components include:• Diverting the city’s nutrient-laden wastewater from flowing into the Grand Calumet River, thence Lake Michigan, into 11,350 acres of irrigated farm land to grow crops
As science adviser to the Secretary of the Army in 1972, Sheaffer helped write the Clean Water Act. The Department of the Army, which has longstanding responsibilities for the nation’s water-resource management and flood control, honored him for Exceptional Civilian Service that same year.
“If you read the Clean Water Act, it says we are to generate revenue that will pay not only for the wastewater treatment, but also pay for other environmental improvements. This is probably the first project that will do that,” Sheaffer said.
“I was dreaming back then about how it ought to be done. I was not aware that anybody ever did it, and it didn’t look like anybody really wanted to do it. But Hammond can be the project.”
Steve Koppes | Newswise Science News
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