Collecting odorous compounds from lagoons with flexible
covers, also called floating covers, to prevent their escape to atmosphere
can be a solution of odor problem. Different types of
flexible lagoon covers are commercially available. Geomembrane
Technologies Inc., Lemna Technologies, Inc., and EPURAE are major
companies supplying lagoon covers. The covers made of sheets of
flexible synthetic materials were the most often utilized type due to
the low cost; however, they were difficult to maintain because of
the wind and fluctuations in the wastewater levels during the year.
Polyethylene and polypropylene membrane cover is a favorable one
as it is easy to maintain and construct. They can be installed in both
concrete and earthen lagoons