Odor Mitigation (Hypolimnetic)

Under waterYour Lake Odors May Be A Deeper Problem Than You Think

If your water plant intake is deep & below the thermocline, you may experience odors caused from anoxic conditions.  Dissolved oxygen (DO) is an essential component of water chemistry, required by most aquatic life for the oxidative breakdown of organic matter to gain energy for metabolic processes. Oxygen gets into a lake primarily by diffusion across the air-water interface, and by photosynthetic production from algae and submersed aquatic plants. DO depletion due to respiratory requirements of bacteria, algae, zooplankton, fish, etc. occurs throughout the water column, but is more concentrated in deeper, dark waters and bottom sediments where organic matter and detritus accumulate and DO inputs are minimal.  Algae that sink to the bottom deplete available dissolved oxygen (DO), enabling the formation of hydrogen sulfide (H2S) that produces a rotten egg odor when exposed to air. Thermal stratification during summer months, and under ice during the winter, allows H2S to accumulate in bottom waters that can create a significant odor event (and potential fish kill) with lake turnover in the fall and ice-out in the spring.

Hypolimnetic oxygenation keeps bottom waters sufficiently oxic so that H2S does not accumulate significantly in bottom waters.

SolarBee® circulation technology moves water both horizontally and vertically for long distances. When the intake is set in deeper waters below the thermocline, this deep circulation provides hypolimnetic oxygenation which is not only beneficial for fisheries improvement, but also reduces hydrogen sulfide accumulation in anoxic bottom waters.

Learn how we help reduce odors by reading about "Related Equipment"

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