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Partial lagoon aerationBattelle InStreem Unit |
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Partial lagoon aerationBattelle InStreem Unit |
During February 1999, Battelle Institute installed two prototype aeration
units in an Onslow County nursery lagoon. The intent was to determine
if the devices improved treatment and were a feasible alternative to a strict
anaerobic process.
The units did have a beneficial impact; however, some design changes were
needed to make the units sturdier. The new, redesigned unit (pictured
above) was installed in the lagoon in November 2000. One of the
questions regarding the use of partial lagoon aeration is: What is the
impact on the nitrogen pathway? Are we just increasing the amount of
nitrogen volatilized as ammonia, or are we enhancing the
nitrification/denitrification process? These are important questions,
which will hopefully be answered during monitoring.
Three of the Battelle InStreem units were installed in Wilson Bay during
July 2000. In both situations, the intent is to increase the
breakdown of benthic organic material through improved circulation
of oxygenated water.
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