After the Missouri Department of Natural Resources reclassified the effluent receiving stream in the city of Sullivan, officials learned that its wastewater treatment lagoon required a more advanced treatment process to comply. They selected a continuous-flow sequencing batch reactor (SBR) system that utilizes a modified activated sludge biological treatment. The new infrastructure has provided cost-saving results for the ongoing removal of nitrogen and phosphorous.
Image credit: “First stabilisation ponds of wastewater treatment plant," © 2012 Sustainable Sanitation, used under an Attribution 2.0 Generic license: http://creativecommons.org/licenses/by/2.0/
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