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Igloo-shaped 'Poo-Gloos' eat sewage
Date:1/8/2011

ies 28 square feet of space on the bottom of a lagoon while creating 2,800 square feet of surface area for bacterial growth. The combination of large surface area, aeration, constant mixing and a dark environment that limits algae make Poo-Gloos capable of consuming pollutants at rates comparable with mechanical plants.

The Study: How Much Poo Can a Poo-Gloo Remove?

Johnson spent time in the wastewater industry before obtaining his master's and doctoral degrees in civil and environmental engineering. In 2002, he set about developing a product that could be used to retrofit wastewater lagoons easily and inexpensively. After seven years, with the help of fellow professors, graduate students and a lot of laboratory tests, Johnson was ready for his first field test.

Johnson built a pilot unit using a large construction dumpster welded shut so it was water-tight. The container held seven Poo-Gloos. Johnson enlisted the help of Salt Lake's Central Valley Water Reclamation Facility to test it. The researchers ran multiple tests using untreated wastewater from the plant to determine the extent to which commonly regulated pollutants could be removed from the wastewater before discharge back to the treatment facility.

The study aimed to determine optimal operating conditions for Poo-Gloos and evaluate their performance at different water temperatures, levels of aeration, and sewage volumes and concentrations. The study found the devices consistently achieved high levels of treatment that were affected only slightly by changing water temperatures and aeration levels:

  • Biological oxygen demand a measure of organic waste in water was reduced consistently by 85 percent using Poo-Gloos, and by as much as 92 percent.

  • Total suspended solids fell consistently by 85 percent, and by as much as 95 percent.

  • Ammonia levels dropped more than 98 percent with Poo-Gloo treatment in warmer water and, more
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Contact: Taylor Reynolds
taylor@wcs-utah.com
801-361-4723
Wastewater Compliance Systems
Source:Eurekalert  

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