Project Title:
An Ultrasonic Biocidal System for Hydroponic Plant Nutrient Solutions
92-1-12.05-2650 NAS02-13770
An Ultrasonic Biocidal System for Hydroponic Plant
Nutrient Solutions
Biotronics Technologies, Inc.
W226 N555B East Mound Drive
Waukesha, WI 53186
Kenneth J. Schlager (414-896-2650)
Abstract:
Ultrasonic cavitation has been shown in a number of
experimental studies to have a destructive (biocidal) effect on
bacteria and other microorganisms. This project calls for an
experimental investigation to determine the feasibility of an
integrated ultrasonic system to control levels of bacteria and
fungi in a closed, environmental life-support system environment.
The stable and transient forms of cavitation will be investigated
over a range of frequencies from 25 kHz to 1.9 MHz. Both pulsed
and continuous wave systems will be evaluated with a variety of
transducers and power supply configurations. Two experimental
ultrasonic generators will be designed, constructed, and tested to
demonstrate the feasibility of the ultrasonic biocidal system
concept. These two experimental systems will be evaluated at The
Land, EPCOT Center, under the direction of Dr. Andrew Schuerger,
senior plant pathologist. Two new developments have greatly
increased the probability of success of this project: the concept
of ultrasonic treatment in the nutrient solution reservoir that
allows time for cavitation action; and the availability of all of
the principal components of the experimental system including the
ultrasonic transducers that have recently become available.
Potential Commercial Application:
Potential Commercial Applications: An ultrasonic biocidal system
would have tremendous market potential in the water and wastewater
treatment industry. Current environmental concerns and new
environmental regulations have stimulated great interest in
finding alternatives to chlorination for control of pathogenic
bacteria.
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