A new report has been published which suggested that current studies demonstrate that solar powered circulation of the top-most layer in a thermally stratified lake strongly suppressed freshwater harmful algal blooms (FHAB’s) even in nutrient-rich waters. The report states that the mechanism(s) through which solar powered circulation suppressed FHABs remains unknown, the evidence indicated that the magnitude of suppression increased over time. The study was authored by H. Kenneth Hudnell, Head Scientist for Solarbee and reviewed by Joseph Eilers also of Solarbee, Christopher Jones, Bo Labisi, Vic Lucero, Dennis R. Hill; each employees of the three SolarBee installations reviewed in the report.
The official press release announcing the study read as follows;
Dickinson, ND — “Harmful Algae”, a peer-reviewed scientific journal dedicated to promoting knowledge of harmful microalgae and the control of these organisms, recently published a report on the efficacy of solar-power circulation (SPC) in suppressing freshwater harmful algal blooms (FHABs).
The incidence of FHABs is increasing worldwide due to excessive nutrient input and declining flow rates. FHAB organisms and their toxins present risks for human and animal health, aquatic-ecosystems sustainability and even economic vitality. Efforts to control algal blooms have ranged from watershed management to limit nutrient input, to chemical algaecide treatments to terminate blooms, to environmentally preferable methods such as SolarBee’s unique SPC technology to prevent blooms.
Titled, “Freshwater harmful algal bloom (FHAB) suppression with solar-powered circulation (SPC)”, the article combines data collected by personnel at three water utilities where high nutrient levels and periodic seeding with cyanobacteria caused annual blooms.
The current studies demonstrated that SPC of the epilimnion, the upper portion of the water column where blooms occur, strongly suppressed FHABs even in nutrient-rich waters. The good algae and zooplankton thrived when FHABs were suppressed, enabling the nutrients to move up the food chain to fish.
SPC effectively suppressed FHABs and reduced operational expenditures on algaecides and chemicals used in producing drinking water. Health, the environment and our economy benefited from this ecologically-based approach to within-water-body management of FHABs.