Wastewater Application Notes

81. BOD Determination Of Strongly-Loaded Organic Waste Water With The BOD-OxiDirect 3/12/2026

    Strongly loaded organic industrial waste water, i.e. from sugar or paper factories, need to be pre-treated before determining the BOD value.

82. Harmonics Reduction Methods 4/17/2017

    There are several basic methods for reducing harmonic voltage and current distortion from nonlinear distribution loads such as adjustable frequency drives (AFDs). Following is a description of each method, along with each method’s advantages and disadvantages.

83. Recording & Control: Aeration Control In Wastewater Plants – Accurate And Fast Control Of Aeration Process 12/1/2019

    Waste water, or raw sewage, is water that drains from toilets, sinks, showers, baths, dishwashers, washing machines and liquid industrial wastes.

84. Bringing Efficiency And New Confidence To BOD₅ Analysis 2/4/2013

    Biochemical Oxygen Demand (BOD) analysis is the test everyone loves to hate—and for compelling reasons.

85. A Non-Intrusive Solution For Measuring Wastewater Flow In A WWTP's Iron Pipes 12/13/2021

    A municipal association needed to understand if wastewater was being equally distributed across two cast iron pipes within its wastewater treatment plant. Learn how clamp-on ultrasonic measurement helped successfully measure the flow.  

86. Removal Of PFCs With Activated Carbon 12/30/2013

    In recent years, various perflorinated chemicals (PFCs) have come under increasing scrutiny due to their presence in the environment, in animals, and in human blood samples. There are two major classes of PFCs: perfluoroalkyl sulfonates such as perfluorooctanesulfonic acid (PFOS) and long chain perfluoroalkyl carboxylates such as perfluorooctanoic acid (PFOA) and perfluorononanoic acid (PFNA).

87. Nitrogen-Reduction Treatment Systems For Long-Term Operations 4/20/2020

    The need for nitrogen-reducing wastewater treatment systems has become more common in the past few decades due to various environmental concerns, including eutrophication, oxygen depletion, and toxicity to aquatic organisms in lakes and streams. The addition of nitrogen removal to any wastewater treatment plant, new or existing, typically increases the costs of the project significantly. When evaluating suitable technologies, it becomes critical to properly identify processes that can not only proved the best upfront capital value but also provide the most sustainable long-term functionality.

88. Waste Technologies Transform Problems To Profit 9/8/2015

    Anaerobic digestion processes that radically improve the quality of wastewater while delivering green energy extracted from biological waste streams are emerging as a profitable way for agricultural and food processing industries cope with the twin impact of drought and pollution challenges.

89. Reduce SBR Maintenance Costs With Jet Aeration 6/16/2017

    Aeration has been a primary method for treating municipal and industrial wastewater for over a century. It is a natural way to reduce biological oxygen demand (BOD) and control odors. In the SBR process, aeration helps foster nitrification by bubbling air through the mixture of wastewater and activated sludge, encouraging the multiplication of aerobic microbes which consume nutrients and convert ammonia into nitrites and nitrates.

90. Real-Time Water Quality Data For Agriculture 9/23/2020

    We arm farmers with mission-critical water data to help enhance crop yield and taste. KETOS delivers valuable insights for fluctuations in deficiency and toxicity.