Wastewater Treatment Plant - Gresham, OR
Posted by: 
dkestrel
N 45° 32.799 W 122° 27.536
10T E 542237 N 5043821
Gresham’s Wastewater Treatment Plant (WWTP) takes dirty water from bathrooms, kitchens, laundries and businesses, cleans it, and returns it to the natural water cycle via the Columbia River.
Waymark Code: WMJN9E
Location: Oregon, United States
Date Posted: 12/08/2013
Views: 10
The treatment plant treats an average 13 million gallons of wastewater daily.
The treatment plant serves 108,000 customers and treats wastewater from the cities of Gresham, Fairview and Wood Village.
Nearly 300 miles of sewer lines in Gresham carry wastewater to the treatment plant from homes, businesses and institutions.
To help reduce the volume of water sent to the wastewater treatment plant, consider reducing the amount of water you use.
The City has an ambitious goal to make its wastewater treatment plant energy independent by 2014, by producing its electrical power onsite through a combination of cogeneration and solar power.
The Wastewater Treatment Plant added solar power at the facility in 2010.
The WWTP’s Caterpillar lean-burn engine and generator takes methane gas produced from the plant’s digesters and turns it into electrical power and heat used at the facility. This reduces the City’s annual electricity costs by $260,000, an average of $21,600 savings a month.
The plant received the League of Oregon Cities 2006 Award of Excellence American Public Works Association 2006 Julian Award for Sustainability (Oregon)
The WWTP produces 50% of its energy by converting methane gas into energy. The WWTP also purchases 18% of its electricity as renewable energy from wind farms in Oregon through PGE’s Clean Wind Program. With the addition of 7% solar power, the treatment plant is 75% sustainable.
The public and school groups may tour the WWTP at 20015 NE Sandy Blvd. Call 503-618-3450 to schedule a tour.
What is the capacity of the facility?: 13,000,000
Describe the biological treatment technology used.:
Activated Sludge
How are biosolids (sludge) managed?: The WWTP recycles its leftover sludge, or biosolids, for reuse as a crop nutrient and soil conditioner on agricultural land for harvests not for human consumption.
What technology is used for disinfection prior to dicharge of treated water?: Cholrination and then dechlorinated
Who is the owner/operator fo the facility?: City of Gresham, OR
What is the website of the WWTP?: [Web Link]
How is the facility governed?: Not listed
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Visit Instructions:
Please post at least 2 original photographs of the site. We would much rather see photos of the plant itself as opposed to the front office, but we also understand that security and site layout may limit your opportunities.