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California District Pegged As A Model For Resource Recovery

Post Date:08/08/2016 1:36 PM

By Sara Jerome@sarmje

WATER ONLINE 8/8/2016

CA District Model for Resource 

What’s the point of distinguishing between a wastewater treatment provider and a water resource recovery service?

“The response is simple. We need to view these important assets in our communities for what they actually do: recovering resources,” NewsDeeply recently reported.

The publication honed in on this distinction in a recent closeup of the Delta Diablo District, a service provider in Antioch, CA, arguing it is an industry model for resource recovery. The district, which serves a population of 200,000, says it provides “conventional treatment of wastewater, recycled water production and distribution, pollution prevention, energy recovery, beneficial reuse of biosolids, street sweeping, and household hazardous waste collection.”

Launched 16 years ago, Delta Diablo is California’s first industrial recycled water facility, according to the report. Resource recovery is “our duty and responsibility to our customers,” said Dean Eckerson, a director at Delta Diablo, per the report.

The article examined the district’s recycled water services as one of its key features.

“When it comes to reusing water, Delta Diablo is near the top. Situated next to the Delta Energy Center (Calpine, Pittsburg) Power Plant Project, Delta Diablo is required to provide recycled water for power plant cooling towers. Calpine built Delta Diablo’s state-of-the-art recycled water facility in 2000. Recycled water is plumbed to the energy centers and circulated through the cooling towers to cool exhaust steam from their turbine generators,” the report said.

Ninety percent of Delta Diablo’s recycled water goes to two power plants. The rest goes to landscape irrigation at golf courses, city parks, and schools. A pipeline brings the water from the facility into nearby cities.

“Delta Diablo operates a residential recycled water fill station which gave away 2 million gallons to nearly 500 permitted users in 2015. The board of directors said they provide this ‘service on a complimentary basis for users to supplement their existing irrigation water supplies,’” the report said.

The use of recycled water at power plants is on the rise in the water industry.

According to engineering firm Black & Veatch’s latest survey of water stakeholders, “Nearly 25 percent of water utilities that serve power plants are implementing non-potable water reuse, a figure expected to rise another 10 percent over the next three years. Use of recycled water in cooling towers is expected to nearly double in the next three years, from 16 percent to 30 percent, and data center reuse will fully double in usage, according to respondents’ three-year outlook.”

To read more about water recycling visit Water Online’s Water Reuse Solutions Center.

Image credit: "irrigation," Wagner T. Cassimiro "Aranha" © 2010, used under an Attribution 2.0 Generic license: https://creativecommons.org/licenses/by/2.0/

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