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Fertilizer, Feed and Other Valuables in Wastewater

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Greentech Media

By Michael Kanellos

AND YOU THOUGHT YOU WERE JUST FLUSHING THE TOILET. A FEW STARTUPS WANT TO SCREEN WASTEWATER FOR VALUABLES.


There probably isn’t gold in that there wastewater, but you likely can get fertilizer.

Ostara Nutrient Recovery Technologies is unveiling a system in Oregon that extracts phosphorous and other nutrients from wastewater and then recycles it into fertilizer. Oregon Governor Ted Kulongoski and VantagePoint celebrity venture partner Robert Kennedy, Jr. will be on hand for the festivities.

The system is installed at Clean Water Services, a water utility with more than 500,000 customers in urban Washington County, west of Portland. Ostara estimates that approximately 200 plants in North America and several hundred plants in Europe and the rest of the world are candidates for the technology.

The company has been running a plant in Edmonton, Alberta since 2007. The reactor extracts more than 75 percent of the phosphorus and 15 percent of the ammonia from a sewage sludge stream of 500,000 liters per day. The resulting mixture is used to make roughly 500 kilograms of Crystal Green. That’s not a powdered drink mix or a song from the late ’60s — that’s the fertilizer.

Read the full article at www.greentechmedia.com

PDF download: 
2009-06-10-GreentechMedia

 

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