Novel sewage treatment system removes up to 70% of nitrogen that
would otherwise be discarded into nature
Brazilian researchers have designed a new low-cost anaerobic reactor
that uses a bacterial biofilm on a sheet of polyurethane foam. The
goal is to enable more wastewater treatment plants in Brazil to
achieve nitrogen removal.
A new type of biofilm reactor adapted to Brazilian conditions and
using polyurethane foam to lower costs can reduce the amount of
nitrogen compounds in wastewater by as much as 70%, according to an
article in Environmental Technology. The researchers who conducted the
study developed a mathematical model to analyze and predict the
nitrogen removal mechanism. The biofilm comprised bacteria that
converted nitrogen compounds into nitrogen gas, which is
environmentally harmless.
https://www.eurekalert.org/news-releases/957058
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