Mixing to Enhance Facultative Lagoon Treatment

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Mixing to Enhance Facultative Lagoon Treatment

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In most lagoons, sunlight causes a hard stratification at 12 to 18 inches of depth. The top water is warmer and thick algae populations are producing supersaturated dissolved oxygen. The DO gasses off at the surface and is not readily available deeper in the pond for use by BOD-reducing bacteria.

Meanwhile, new inflow water may be short-circuiting straight across the bottom of the pond. Short-circuiting makes actual detention much less than theoretical detention time. Without proper detention time, the water does not have time to experience a good BOD and ammonia reduction.

SolarBee and GridBee floating wastewater mixers from Ixom Watercare can enhance or supplement your existing facultative lagoon system. Effective mixing often reduces effluent algae biochemical oxygen demand and total suspended solids (to under 10 mg/L) and usually ammonia, phosphorus and pH. Better mixing can also help solve problems involving overloading, odors and sludge buildup.

Check out the slides below to learn more about how to make cost-effective enhancements to the system you already have in place. 

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