Tag Archives: lagoon dissolved oxygen (do)

Wastewater Pond DO: Where Did the Dissolved Oxygen Go?

A wastewater pond requires sufficient Dissolved Oxygen (DO) to satisfy Biological Oxygen Demand (BOD) and Nitrogenous Biochemical Oxygen Demand (NBOD). Without DO, a pond can experience odors and high effluent BOD and can even go septic. Often DO problems can … Continue reading



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Lagoon Lemna: Pros and Cons of Duckweed in a Wastewater Pond

Lagoon lemna, or duckweed, has been a popular topic on our Lagoons Do It Better Facebook group lately. That’s because, like algae and sludge, duckweed is just one of those things that comes with the territory. In our latest episode of … Continue reading



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Wastewater Treatment Pond Odor Control for Spring Turnover

Unmixed wastewater treatment ponds can experience turnover in the spring, so it’s the time of the year when operators (and local residents) are most concerned about unpleasant wastewater odors. Although spring lagoon turnover and its accompanying odors may be normal … Continue reading



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Efficient Lagoon Aeration: The AeroHub Fine Bubble Lagoon Aerator

Fine bubble aeration is a popular method of lagoon-based wastewater treatment due to its superior oxygen transfer efficiency. Our MARS aerator adds a coarse bubble static tube to fine bubble diffusers to combine that oxygenation efficiency with turbulent mixing. Sometimes, … Continue reading



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Preventing Fall Lagoon Odor Caused by Seasonal Turnover

October is here—time for football, apple cider, falling leaves, and seasonal lagoon turnover. Although less extreme than the spring transition, autumn’s cooler temperatures cause destratification and may trigger lagoon turnover and corresponding odors. In this short article, we’ll talk about the causes … Continue reading



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Lagoons Do It Better: Learn How at WEFTEC 2018 Booth #1217

We’re looking forward to seeing everyone at WEFTEC 2018 in a couple of weeks. We’ll be in Booth #1217 in Hall B2. Click on the banner at right and use our promo code, EVITES449, for a free expo registration. Stop … Continue reading



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Lagoon Aeration System Design: Calculations and Common Pitfalls

To ensure wastewater treatment objectives are met, a lagoon aeration system design must be customized for its specific application. In this video, Patrick Hill outlines the facility details we use to calculate aeration requirements and customize a lagoon aeration system design. … Continue reading



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Duckweed Control in Wastewater Lagoons

Duckweed, or water lens, is a rapidly growing, invasive aquatic plant that thrives in wastewater lagoons due to the presence of ammonia and phosphorus, which act as fertilizer. Since summertime is high season for lagoon duckweed, it’s a good time … Continue reading



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Wastewater Lagoon Odor Control for Spring Turnover

Spring is the time of the year when unmixed lagoons turn over, so it’s also the time of the year when operators (and local residents) are concerned about wastewater lagoon odor control. Although spring lagoon turnover and its accompanying odors … Continue reading



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Aerated Lagoon Optimization to Reduce Energy Consumption

Energy costs for aeration represent the largest expense for a wastewater lagoon facility, so any increase in efficiency directly improves the bottom line. Since aeration systems are designed to be efficient at the lagoon’s full design capacity, they can be … Continue reading



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