Now that 2018 is coming to a close, let’s take a look back and see which lagoon topics resonated with our blog readers this year.
Summer ammonia removal via nitrification is less of a challenge for lagoons than cold weather ammonia removal, as nitrifying bacteria are temperature sensitive and thrive in warmer water. The interplay between algae and bacteria, dissolved oxygen, pH, and temperature determines the pathway and rate of nitrification. Watch our video, 6 Key Factors for Nitrification, then read below for tips on how a lagoon can be optimized for summer ammonia removal. Continue reading…
Unmixed lagoons turn over in the spring, so it’s also when operators (and local residents) are concerned about wastewater lagoon odor control. Although spring lagoon turnover and its accompanying odors may be normal and expected, that doesn’t mean they are tolerated. Here we explain what causes lagoons to turn over and what can be done to mitigate odor issues. Read more…
Smelly lagoons have created the perception that wastewater lagoons don’t work and should be replaced with mechanical plants. Triplepoint HQ is six miles as the crow flies from the Stickney (aka “Stinkney”) Water Reclamation District, which serves the Chicago area and is the world’s largest wastewater treatment plant. Our coworkers who live a little closer to the facility can tell you on certain days when the wind is blowing the wrong way, treatment plants smell! A properly functioning lagoon is for the most part free of objectionable odors; in fact, a smelly lagoon is announcing that it’s not working optimally.
In this video, Triplepoint’s Patrick Hill describes lagoon odors and what they mean and shares some options for correcting the conditions that cause odor. Watch the video and read below for highlights. Continue reading…
Lagoon Aeration and Optimization
The winter of 2017–18 is already one for the books, with record cold temperatures in the Midwest and eastern U.S., and snow as far south as Florida. So far, most of the western U.S. has enjoyed relatively mild conditions, but there’s still a couple of months of winter left to go.
In a previous blog, Is Your Wastewater Lagoon Ready for Winter? Prepping for Cold Temperatures, we described the effect of cold temperatures on biological processes. In this article, we’ll discuss the downside of lagoon surface aerators, which are particularly vulnerable to freezing temperatures. Continue reading..,
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 inefficient and wasteful at actual flow and BOD levels. In this article, we’ll outline why a lagoon facility can end up significantly overbuilt, and present methods of aerated lagoon optimization to save energy costs. Continue reading…
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. He’ll also review common pitfalls and often-overlooked factors that can result in insufficient treatment. Watch the video on our Triplepoint You Tube channel and read on for highlights.
“Short-circuiting is the greatest deterrent to consistent pond performance. The importance of the hydraulic design of a pond system cannot be overemphasized.” That’s a quote from the EPA’s lagoon manual, Principles of Design and Operations of Wastewater Treatment Pond Systems for Plant Operators, Engineers, and Managers.
Short-circuiting occurs when wastewater flows through the lagoon unevenly, allowing some of the influent to take a short cut through the cell and bypass the treatment process. Since adequate retention time is critical to lagoon treatment, anything that shortens retention time can result in high BOD and TSS in effluent. In this article, we’ll describe the ways lagoon hydraulics can contribute to short-circuiting, how to diagnose it, and how it can be prevented. Continue reading…
Other Lagoon Topics
Land application is the most common disposal method for treated wastewater in the U.S., and the preferred method in many states. Land applying effluent can reduce demand for fresh water, provide nutrients to soil, and keep potential contaminants out of waterways. For lagoons, it may also be a way to avoid having to meet ammonia discharge limits. Watch our video on the pros and cons of land application for lagoon effluent and read on for highlights.
Hydraulic fracturing, or fracking, is the process of injecting pressurized water, chemicals, and sand into the ground to extract shale oil and natural gas. While fracking has transformed energy production in the U.S., it requires a lot of water and thus creates a lot of wastewater, which must be treated and disposed of safely. In this video interview, Triplepoint’s resident expert, western regional manager Tom Daugherty, gives the lowdown on fracking wastewater and how frac ponds can be economically upgraded with MARS aeration. Read on for highlights and links to more information.
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 to revisit the topic—what duckweed is and what it does, and review some methods of duckweed control. Continue reading…
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