Regenis 2017 Mid-Year Update
New Horizons In Nutrient Recovery
One of the more exciting recent developments in on-farm manure and nutrient management is incorporation of fine solids separators (FSS) capable of separating fine solids and their associated nutrients from the wastewater.
When paired with an anaerobic digester, these FSS units allow for 90% of the phosphorous and 35% of the nitrogen from dairy waste to be removed from the slurry in a solid form. Because of the FSS process, dairy farmers can create a new stream of revenue by selling the phosphorous as a bio-fertilizer, or they can more easily transport it to distant fields and more efficiently meet their nutrient management plans.
Only a handful of FSS units have been installed in North America, but that number will increase when Regenis cuts the ribbon on a dissolved air floatation device (DAF), a type of fine solid separators at Edaleen Dairy in Lynden, Washington on July 10th. Regenis and Edaleen Dairy teamed up in successfully writing a grant to the Washington State Department of Commerce RD&D program, which in part allowed for funding and demonstration of this new technology.
“Nutrient recovery is going to be a bigger and bigger deal moving forward,” said Edaleen Dairy’s Mitch Moorlag. “With current and future regulation, things aren’t getting easier for farmers and more tools are needed to help us achieve a higher level of stewardship of the land.”
“With an FSS, I’ll need to buy less land, apply fewer nutrients to my land and not have to truck nutrients anymore. That’s what you call a winning triple bottom line,” Moorlag said.
“Phosphorus is something that farmers need to keep growing crops to feed America so it will always be in demand. I think the biggest future trend will be that new, renewable sources of phosphorus like the ones streamlined by the FSS will become a bigger part of the commercial fertilizer business as people look for more sustainable options,” Moorlag said.