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Click to access the April 2018 issue of Water Environment Research.

The Water Environment Federation (WEF; Alexandria, Va.) provides open access to cutting-edge research in its journal, Water Environment Research (WER).

In this month’s open-access paper, “Bioaugmentation with Nitrifying Granules in Low-SRT Flocculent Activated Sludge at Low Temperature,” researchers describe how bioaugmentation with nitrifying granules grown in a sidestream reactor consistently increases the nitrification capacity of activated sludge systems.

“In their paper on low [solids retention time], low temperature activated sludge, Figdore et al. were able to achieve stable nitrification using bioaugmentation with a nitrifying granular sludge,” said Tim Ellis, WER editor-in-chief. “Once bioaugmentation was interrupted, the mainstream nitrification stopped.  During bioaugmentation effluent ammonia levels were consistently below 1 mg/L.” 

Other papers published in this issue include

• “Special Section: Highlights of WEFTEC 2017,”
• “Effect of High Strength Food Wastes on Anaerobic Codigestion of Sewage Sludge,”
• “Assessment of Selective Withdrawal and Inflow Control on the Hydrodynamics and Water Quality of Ilam Reservoir,”
• “Revisiting Coiled Flocculator Performance for Particle Aggregation,”
• “Bench-Scale Evaluation of Hydrothermal Processing Technology for Conversion of Wastewater Solids to Fuels,”
• “An Artificial Intelligence Platform for Asset Management Contributes to Better Decision-making Tools for Operations, Maintenance, and Utility Management,” and
• “Centrate Pretreatment Process (CPT) Sidestream Deammonification Startup -Operational Challenge.”