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Operators of water resource and recovery facilities (WRRFs) are increasingly interested in using carbon-capture technologies such as high-rate activated sludge (HRAS) systems to minimize carbon oxidation and maximize organic carbon recovery and methane potential through biosorption of biodegradable organics into the biomass.

I worked with an international research team to study a universal process model for HRAS for maximizing carbon capture from...

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TagsWastewater, wastewater treatment, sludge, high activated sludge system,

To be more cost-effective and energy-efficient, cities increasingly are shifting their wastewater treatment plants toward energy-recovery systems. And the high-rate activated sludge system (HRAS) is becoming the backbone of energy-efficient wastewater treatment processes.

But not enough research has been done on the various carbon-removal technologies available. And there is a need to better understand and improve nitrogen and phosphorous management in...

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TagsWastewater, wastewater treatment, Energy Efficiency, sludge, high activated sludge system,