When dealing with all the surprises that can come through wastewater systems, robust and simple processes can go a long way toward keeping things flowing smoothly. In this recent Water Talk session, Gerald Seidl, senior vice president of Headworks International, describes several such solutions ranging from upgraded mechanical to new biological technologies. New multi-rake bar screens with finer-screen openings than ever before now provide a cleaner flow to downstream biological treatment processes. On the biological side, anaerobic moving-bed bioreactor (MBBR) systems offer excellent performance for high-strength wastewater experiencing frequent fluctuations in flow or temperature.
Ammonia removal is a key metric for assessing wastewater treatment facility performance. However, traditional methods to monitor the process — based on measuring process parameters or nitrogen species — tend to be lagging indicators.
For water utilities facing various water contamination issues, there is no single catch-all treatment. That is why in this recent Water Talk interview Ronit Erlitzki and Doug Craver of AdEdge Water Technologies share treatment options that can be used alone or in combination to address diverse challenges. They introduce a new reverse osmosis (RO) treatment technique capable of raising recovery rates by 20 percent and reducing concentrate volume up to 70 percent vs. conventional RO (depending on water quality). They also explore biological processes for removing nitrate, VOC, ammonia, etc. and treating high brine concentrations in wastewater, plus techniques for resolving ammonia problems in water with high TOC concentrations.
Leon Downing, Principal Process Engineer and Innovation Leader at Black & Veatch, sat down with Water Talk's Todd Schnick and Kevin Westerling to discuss the exciting developments taking place with sidestream enhanced biological phosphorous removal, or S2EBPR. Black & Veatch is co-leading a Water Research Foundation (WRF) study conducted to establish a standard research approach for S2EBPR, which Downing calls "the evolution of biological phosphorus removal."
Improving wastewater treatment efficiency requires some type of change in the physics, biology, or economics of the process. In this Water Talk interview, Jeff Kelly, Red Valve’s senior product manager for the Tideflex Aeration and Mixing System, describes how to change all three — to the tune of a cost-saving 50-percent reduction in applied airflow! The Tideflex approach uses a unique diffuser design to support on/off aeration and mixing cycles without clogging. Managed by oxidation-reduction potential (ORP) readings, the novel technique supports a biological selection process that encourages the exclusive growth of facultative anaerobes — the most resilient wastewater microbes, which get rid of phosphates and nitrates without producing hydrogen sulfide.
Filtration has been around for a long, long time, so it may be that most treatment plant operators feel pretty informed about its capabilities. But hearing from Brian Frewerd, Director of Application Engineering with Parkson Corporation and Water Talk guest, will likely prove enlightening. Frewerd provides background on sand filtration for tertiary treatment applications, followed by insight on notable technology improvements and performance milestones
Many wastewater treatment plants (WWTPs) are facing stricter limits on nutrient discharges, yet each plant and situation is different and solutions are not one-size-fits-all. Bryce Figdore, Wastewater Process Engineer with HDR and Water Talk podcast guest, talks about another tool at utilities' disposal — nitrification bioaugmentation using granular sludge.
Carollo Engineers, an environmental engineering firm that specializes solely on the planning, design, and construction of water and wastewater facilities has identified five major trends in the industry.
At WEFTEC 2016, Evoqua Water Technologies explored six core challenges faced by wastewater treatment plants -- energy reduction, nutrient removal, odor and corrosion control, aging plant equipment, water reuse and disinfection. In this Water Online Radio interview, Paul Rice, Municipal Marketing Director with Evoqua Water Technologies, discusses energy reduction and nutrient removal in more detail.
Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design, application and manufacture of wastewater treatment equipment and systems for municipal and industrial markets, worldwide. They are most noted for the Aqua SBR, the sequencing batch reactor, biological process, as well as now our cloth media filters.
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