Innovating Infrastructure in Lake Monticello

 

Our Aqua Virginia team recently completed an innovative wastewater treatment plant upgrade to improve service, protect local waterways, and operate more efficiently for the Lake Monticello community just outside Charlottesville.

 

Aqua had two overarching goals. We wanted to improve the quality of the plant’s treated wastewater, which is discharged into the stringently regulated Chesapeake Bay watershed. We also wanted to minimize future rate increases for customers by reducing operating expenses and deferring the need for a major plant overhaul, which would cost much more.

 

Consulting the Expert

 

We spoke to Aqua’s operations manager Dan Hingley, who engineered the project and oversaw construction. “While upgrades to water systems typically result in obvious improvements for customers — like better pressure or more reliable service — improvements to a wastewater system often go unnoticed,” said Hingley. “In fact, many of us don’t even think about our wastewater after it goes down the drain or is flushed away. Meanwhile, a lot of effort goes into collecting, transporting, and cleaning wastewater, and customers rely on us to protect the environment and their local waterways. This project demonstrates how we do that.”

 

 

 

The treatment concepts we used aren’t new, but the way we applied them required creativity and innovation to achieve goals at a lower cost. Making wise decisions about which treatment process to use and which types of equipment to install alleviated the total capital cost of the project. 

 

Aqua reconfigured the layout of the wastewater plant and added some new aeration system controls to optimize treatment. The team used baffle walls to create new zones within the existing tanks. These baffles control water flow, prolong the amount of time the wastewater spends in treatment tanks, and separate a single tank into multiple treatment stages. While the previous process was a single tank that was continuously aerated, the modified process added new zones that weren’t aerated to allow specific bacteria to eat organic matter in the untreated wastewater, which removes a nutrient called nitrogen.

 

In these new unaerated zones, Aqua had to install a mixing system since it was no longer being provided by the diffused aeration system. Aqua collaborated with a neighboring utility to design and build mixers that connect to the existing air supply system and release large air bubbles, rather than the smaller diffused air bubbles, to induce mixing. This solution costs less to create and costs less to operate than installing mechanical mixers.

 

 

 

 

Award-Winning Innovation

 

“Aqua’s top priority is to deliver safe, reliable drinking water and wastewater services to our customers,” noted Aqua Virginia President John Aulbach. “These upgrades in Lake Monticello will strengthen our infrastructure, improve service, and help protect the environment.” 

 

At its 2019 Summit, the National Association for Water Companies awarded Aqua a Management Innovation award for this project completed at the Lake Monticello wastewater treatment plant. The award recognizes a utility that has implemented groundbreaking and industry-changing ideas. 

 

Aqua provides water and wastewater service to about 80,000 people in 37 counties across Virginia. 

 

Keep an eye on our blog to go behind the scenes of more of our infrastructure improvement projects throughout 2020!

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Tree Planting with Aqua at the Perkiomen Creek Watershed

Here at Aqua, we take pride in coming together with local conservationists and residents to improve water quality in an eco-friendly way.

 

 That’s why on Friday, Oct. 7, several Aqua employees, along with dozens of volunteers, showed up to plant native trees at the Perkiomen Creek Watershed, adjacent to our Green Lane reservoir. Aqua’s Watershed Specialist Robert Kahley, Chief Environmental Officer Chris Crockett, Manager - Water Resources Engineering Tony Fernandes, and Director of Environmental Compliance Deborah Watkins, were among the green-thumbed volunteers protecting our local water ecosystems through environmental stewardship.

 

 

In less than two hours, the volunteers planted 120 new trees, and by the end of the day, the number was up to an impressive 620. Think about it — that’s 620 new native trees, releasing fresh oxygen into the air that wasn’t there before. The trees may be short in height now, but their positive impact on the environment is nothing close to small.

Join us in thanking our stellar Aqua employees for their continued hard work, both for our customers and the world around us.  

 

 To learn more, visit: http://bit.ly/2e2Tw4d

 

 

 

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