Sludge & Biosolids Processing Resources

81. Can We Turn Sewage 'Sludge' Into Something Valuable? 4/30/2019

    Over the past few years I have become an academic expert in “sewage sludge” — the residual, semi-solid mix of excrement packed with microorganisms that is left behind within wastewater treatment plants. Every year the UK alone produces approximately 1.4 million tons of the stuff. About 80 percent of it is spread on fields as manure, but this still leaves us with a headache — what do we do with the rest?

82. When To Consider An Alternative To Thermal Dispersion Meters 4/17/2019

    Maintaining a firm grip on blower output within digesters at wastewater treatment plants is the key to stable dissolved oxygen levels that support an optimal biological cycle. However, the most common type of device used to measure aeration in the activated sludge process — thermal dispersion flow meters — is not always the best fit. The good news is that wastewater plant operators have multiple alternatives.

83. Water Runs Through The Circular Economy 3/26/2019

    Circular economy approaches can add value to a vast range of processes and product sectors, but water is the ‘blue thread’ that flows through it all, Nick Jeffries tells Paul O’Callaghan, chief executive, BlueTech Research.

84. Wastewater Is An Asset — It Contains Nutrients, Energy And Precious Metals, And Scientists Are Learning How To Recover Them 3/21/2019

    Most people think as little as possible about the wastewater that is produced daily from their showers, bathtubs, sinks, dishwashers and toilets. But with the right techniques, it can become a valuable resource.

85. Resource Recovery: Monetizing The Hidden Assets Within Wastewater Plants 3/11/2019

    A growing number of wastewater treatment plant leaders are banking on newer technology to tap into previously unclaimed resources at their sites while addressing pressing needs such as increasing capacity and meeting more stringent treatment requirements. By looking at the process through a different lens and raising the bar when it comes to overall objectives, it is possible to shift facilities from being a cost center toward a revenue generator.

86. Biosolids In The Urban Metropolis: Long-Term Planning For New York City 11/8/2018

    Everything may be bigger in Texas, but there is more of everything in New York City — including biosolids, which require smart, sustainable management.

87. How Data And Nature Can Combine To Help Small Wastewater Treatment Plants Address Huge Hauling Costs 9/13/2018

    It is no secret that the number of landfills has been steadily decreasing across the United States. As more and more cities adopt ‘zero waste to landfill’ sustainability goals, the number of landfills has shrunk from 6,326 in 1990 to 1,738 in 2015. Decreasing landfills has meant increased waste hauling costs for wastewater treatment plants (WWTPs) as sludge travels farther distances to reach landfills.

88. Securing The World's Water, Food, And Energy Supply By 2050: Wastewater Treatment Is Central To The Solution 9/4/2018

    As wastewater treatment plants evolve into resource recovery facilities, the thermal hydrolysis process (THP) is destined to play a starring role, with some major THP projects having already set the stage.

89. City Solves Wastewater Plant Dilemma With Dynablend™ Liquid-Polymer Technology 8/6/2018

    The City of Marengo, Illinois operates an activated sludge wastewater treatment plant that processes an average volume of 1.8MGD with a maximum capacity of 5.94MGD. In the fall of 2007, the operators of the plant began to observe reduced performance of their liquid-polymer feed system that was in place at the city’s facility. The Dynablend™ liquid-polymer unit was a good fit for the Marengo plant because of its reliability and performance over a wide range of polymers commonly used for sludge processing. Read the full case study to learn more.

90. City Of Dixon, IL, Uses Polyblend® Dry Polymer Preparation System As Part Of A Creative, Cost-Neutral Biosolids Disposal Arrangement 7/1/2018

    The City of Dixon, Illinois, located 100 miles west of Chicago, went on-line with an upgraded 4.5 MGD wastewater treatment plant in February 2002.