In these waning days of 2019, let’s take a look back and see which lagoon topics resonated with our blog readers this year.
Lagoon MBBR: Moving Bed Biofilm Reactors for Ammonia Removal
The lagoon MBBR, or moving bed biofilm reactor, is a proven technology for the removal of lagoon ammonia through biological nitrification. In this article, we’ll describe MBBR technology and how it’s been adapted for lagoon ammonia treatment. Then, we’ll explain how Triplepoint’s patented NitrOx® Process improves on the lagoon MBBR by adding a heating element to ensure year round nitrification in cold climates and show how an installation performed during the brutal Polar Vortex cold snap in January 2019. Read more…
Triplepoint’s NitrOx Lagoon MBBR: A Video Case Study
A lagoon MBBR is a tertiary treatment process added to a lagoon system for the purpose of ammonia removal through biological nitrification. This video case study highlights Benton, Missouri: They upgraded their wastewater lagoon facility with a NitrOx Lagoon MBBR to meet their new low ammonia limits. Watch the video and read on for highlights.
Lagoon Sludge Reduction In Situ: Methods of Removing Sludge In Place
One of the benefits of lagoons for wastewater treatment is their built-in sludge storage, which reduces the need for sludge handling. However, every lagoon will eventually require dredging to remove nonvolatile solids like grit.
The mechanical removal of sludge is expensive and disruptive, so the longer a lagoon can go between dredgings, the better. In this article, we’ll discuss methods of lagoon sludge reduction in situ, without dredging. Read on…
Lagoon Solids: Using the TSS to BOD5 Ratio to Diagnose Treatment Problems
Biological Oxygen Demand (BOD) and Total Suspended Solids, or TSS, are standard testing parameters for wastewater lagoons. The ratio between the two numbers can provide valuable insight into the source of the TSS. In this article, we’ll take a look at what the ratio of total suspended solids to BOD5 in final effluent reveals about the cause of lagoon solids issues. Continue…
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 and expected, that doesn’t mean they are tolerated. In this short article, we’ll explain what causes ponds to turn over and what can be done to mitigate odor issues. Read more…
Winery Pond Odor Control: A Case Study
A winery pond or lagoon can be an ideal treatment option for process wastewater because it is relatively low-maintenance, sustainable, easy to operate, and cost-effective. A pond with sufficient capacity can easily cope with the peak loads and changes in influent volume and temperature common with winery wastewater. Like municipal lagoons, however, a winery lagoon can emit unpleasant odors if dissolved oxygen levels are inadequate. In this article, we’ll review the characteristics of winery wastewater and why lagoon treatment can be a good option. Continue…
Lagoon Aeration and Optimization
Lagoon Aeration System Design: Individual Air Lines vs Fixed or Floating Laterals
A lagoon aeration system will require some method to convey air from the onshore blower to each aeration unit. Two distribution methods are typical: individual air lines or lagoon laterals, either submerged and fixed to the bottom; or floating on the surface. In this article we’ll compare the benefits and drawbacks of individual air lines and lagoon laterals to help you to determine which method is best for your application. Read more…
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 be resolved quickly by improving oxygen transfer or adding more air. However, it’s important to diagnose what’s happening when air is going into the lagoon yet there’s insufficient DO to meet treatment requirements. Go to article…
Other Lagoon Topics
Lagoon Microbiology: Heterotrophs vs Autotrophs
Biological treatment is the most efficient way of removing soluble compounds from wastewater. Until recent times, it was functionally the only way. Biological treatment is far more efficient and available than processes like ultrafiltration and reverse osmosis and has been used for centuries. It’s the primary mechanism for lagoon treatment and provides for true removal of BOD without creating sludge. While some will end up in biomass, the majority of carbonaceous BOD is converted to carbon dioxide and off-gases to the atmosphere. There are very few processes that allow removal that simply and efficiently without having to handle waste products. Read more…
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 LDIB-TV, Patrick Hill gives the lowdown on duckweed. Watch the video and read on for highlights.
Subscribe and we’ll email you each new article on wastewater lagoon topics of interest to you, hot off the press!