The Zebra Mussel (Dreissena polymorpha) infestation of raw water
intake pipes and structures can seriously limit the water flow
into hatcheries, drinking water treatment plants and cooling systems
of power plants. A mechanical removal of the mussels might be
required to restore the original flow.
In order to prevent the Zebra Mussel infestation of raw water
pipes, Bollyky Associates, Inc. (BAI) has undertaken a laboratory
and pilot plant program to develop an environmentally safe process
that will not leave or produce undesirable or harmful chemicals
in the water.
Among the chemical treatments tested, ozonation showed the most
The available data indicate:
A side stream ozonation process was developed which involved the
pumping of high concentration of dissolved ozone in water solution
(15-25 mg/l), stabilized against decomposition, into the intake
of the raw water pipe and blended it into the intake water. A
patent was awarded to Bollyky Associates Inc. covering this process
and the use of ozone for Zebra Mussel control.
Ideally, this ozonation process controls Zebra Mussel infestation and disinfects the water against pathogenic microorganisms at the same time. The beneficial effects important for various water applications include:
An 11 MGD side stream ozonation process was designed for a fish
culture station in New England.
Further information is available on request.