Applied Research
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To prepare designs for the 2,020-mgd Cat-Del UV Disinfection Facility, we constructed this validation facility to test UV disinfection units’ ability to meet certain treatment, headloss, and power consumption goals, while also enabling competitive procurement of the UV units.
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Hazen and Sawyer is the lead investigator in a WateReuse Foundation study investigating the application of advanced oxidation technologies to reduce the organic fouling and overall energy usage of reverse osmosis membranes used during water treatment and water reuse.
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We're currently building the first dataset inclusive of efficiency and pressure drop time-sensitive variations for 17 fine-pore aeration diffusers from 5 different manufacturers.
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We're currently researching the most cost-effective single carbon supplement for 5-stage BNR with denitrification filter technology, from a chemical delivery and safety standpoint, for the Neuse River WWTP, the largest wastewater treatment facility meeting “Limits of Technology” Total Nitrogen limits on the East Coast.
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We successfully identified three process schemes able to meet the anticipated effluent requirements - specifically Total Nitrogen < 1.5 mg/L and Total Phosphorous < 0.02 mg/L - for recharge of Florida's Biscayne Aquifer.
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Working with the Water Research Foundation, we're developing a quantitative risk assessment and management framework that utilities can use to assess the impact of climate change and other long-term drivers on their systems, enabling sound decisions during uncertain times.
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The Applied Research Facility at the 26th Ward WPCP has provided NYCDEP with over a decade of pilot-scale research into the kinetics of the nitrification and denitrification reactions that are the backbone of the City's Biological Nutrient Removal program.
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A change in carbon source, as a result of research and pilot testing, has yielded a chemical savings of $400,000 per year at the 75-mgd Henrico County Water Reclamation Facility.
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At the South Durham Water Reclamation Facility, we piloted several glycerin products to determine their effectiveness in helping the City of Durham (NC) meet an upcoming TN effluent standard of 3.0 mg/L. The results of the testing helped the City avoid more costly capital improvements.
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To prepare designs for the 2,020-mgd [[Cat-Del UV Disinfection Facility]], we constructed this validation facility to test UV disinfection units’ ability to meet certain treatment, headloss, and power consumption goals, while also enabling competitive procurement of the UV units. -
Hazen and Sawyer is the lead investigator in a WateReuse Foundation study investigating the application of advanced oxidation technologies to reduce the organic fouling and overall energy usage of reverse osmosis membranes used during water treatment and water reuse. -
We're currently building the [[first dataset inclusive of efficiency and pressure drop time-sensitive variations]] for 17 fine-pore aeration diffusers from 5 different manufacturers. -
We're currently researching the most cost-effective single carbon supplement for 5-stage BNR with denitrification filter technology, from a chemical delivery and safety standpoint, for the [[Neuse River WWTP]], the largest wastewater treatment facility meeting “Limits of Technology” Total Nitrogen limits on the East Coast. -
We successfully identified three process schemes able to meet the anticipated effluent requirements - specifically Total Nitrogen < 1.5 mg/L and Total Phosphorous < 0.02 mg/L - for [[recharge of Florida's Biscayne Aquifer]]. -
Working with the Water Research Foundation, we're developing a quantitative risk assessment and management framework that utilities can use to assess the impact of climate change and other long-term drivers on their systems, enabling sound decisions during uncertain times. -
The [[Applied Research Facility]] at the 26th Ward WPCP has provided NYCDEP with over a decade of pilot-scale research into the kinetics of the nitrification and denitrification reactions that are the backbone of the City's Biological Nutrient Removal program. -
A change in carbon source, as a result of research and pilot testing, has yielded a chemical savings of $400,000 per year at the 75-mgd [[Henrico County Water Reclamation Facility]]. -
At the [[South Durham Water Reclamation Facility]], we piloted several glycerin products to determine their effectiveness in helping the City of Durham (NC) meet an upcoming TN effluent standard of 3.0 mg/L. The results of the testing helped the City avoid more costly capital improvements.
Focused applied research serves to provide leadership and guidance, pushing the cutting edge of science while remaining at the very center of practicality. It advances process design and implementation, bringing forward the solutions to our current environmental challenges, and preparing us for those of tomorrow. It also provides a platform for dialogue with regulators and utility managers, while fostering education and outreach to stakeholders and collaborators.
Hazen and Sawyer has spent decades advancing the science behind environmental engineering, from design of the first declining-rate filtration system to influencing regulations on the disinfection contact time necessary to meet permit requirements.
Recent applied research work includes:
- Extensive experience in modeling perchlorate and chlorate formation during storage of liquid hypochlorite solutions.
- Active involvement in the review process considering chlorate and perchlorate regulation by the US EPA.
- Applying climate change science to the development of management and risk-management strategies to assist utilities in adapting to our changing environment.
- Investigating advanced oxidation processes for controlling organic fouling of RO membranes during water reuse and providing recommendations to utilities on process optimization.
- Active involvement in the review panel for NSF-ANSI to develop a single product allowable concentration (SPAC) for perchlorate.
- Leadership and participation in Water Research Foundation and WateReuse Foundation studies examining the use of ozone and other advanced oxidation processes for disinfection.
Competing legislative and regulatory requirements, EPA’s six-year review, the third candidate contaminant list (CCL3) and third unregulated contaminant monitoring rule (UCMR3), and political and public pressure to address the concerns around pharmaceutical and endocrine disrupting compounds, among others, produce an enormous need for focused, solution-based research efforts.
Our role in applied research is providing clients, scientists, and the broader water/wastewater/reuse community with the tools and information they need to implement process improvements, manage water resources wisely, keep abreast of pending regulatory requirements, communicate with the public, and minimize the economic and environmental impacts of the treatment process.
For inquiries contact: Ben Stanford, Ph.D.,at .(JavaScript must be enabled to view this email address)