Found this old article from W. Adey. "Toxic Organics Combined with solar ultraviolet, ATS systems with high oxygen supersaturation break down entrained hydrocarbons. There is an extensive general research literature on this process, and a single ATS research study in the late 1990’s demonstrated that when combined with artificial ultraviolet, ATS systems have considerable capability of breaking down a variety of chlorinated hydrocarbons. Additional research is necessary in this area, as a single study, even with a considerable laboratory support, cannot provide the basis for systems engineering; however, it is likely that if ATS is carried out at very large scale to produce bioenergy, it will significantly reduce toxic hydrocarbons in aquatic environments and ultimately the ocean." http://www.physicsegypt.org/epc08/epc823.pdf I'm personally not even sure UV is necessary but I suppose it would seem to increase the effects of any Reactive Oxygen Species produced by the algae.