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Potable reuse is a drought-resilient water supply diversification strategy that many cities are considering for supplementing their water supply.

Although many water sources can be demonstrated to contain treated wastewater contributions, discussion of potable reuse is generally confined to the intentional contribution of wastewater return flows for expansion of water availability. Potable reuse is often distinguished between direct and indirect configurations, depending on whether the return flow is released to an intervening environmental buffer....

Read More - Direct Potable Reuse: Drought-Resilient, Sustainable Water Source of the Future

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Tagsdirect potable reuse, Reuse, treatment, Water, wastewater treatment,

In high-rate activated sludge (HRAS) systems, extracellular adsorption and intracellular storage have been referred to as the dominant mechanisms for capturing organic carbon from wastewater.

However, the quantification of storage products under short sludge retention time (SRT) of HRAS systems has rarely been studied until now. Since the measurement of storage products is complex and dependent on several variables, alternative solutions for substrate removal through storage are required to understand the high-rate...

Read More - A Fundamental Approach to Determining Intracellular Storage Products

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Tagstreatment, wastewater treatment, activated sludge, Wastewater, HRAS,

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 wastewater.

During our research, we studied models involving the Blue...

Read More - Researching Carbon-Capture Technologies Through Process Model

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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 HRAS systems.

Carbon removal technologies include the A-stage of AB...

Read More - Making Wastewater Treatment More Energy-Efficient

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