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Thank you to everyone who attended the 11th Annual Salt Lake County Watershed Symposium! This free two-day conference encourages a comprehensive review of the current state of our watershed while creating learning opportunities for a diverse array of stakeholders. Sessions covered a broad range of topics on water quality and watershed issues with local, regional, and national relevance. Hosted by Salt Lake County Watershed Planning & Restoration.

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"The Symposium is tremendously important to the future of all of Utah. You guys are educating stakeholders across Northern Utah in an objective, user-friendly way about issues, problems and concerns that are not being discussed publicly anywhere else."  -Zach Frankel, Utah Rivers Council

Thursday, November 16 • 11:40am - 12:10pm
Media to Remove Metals, Nutrients and Other Runoff Pollutants

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Media to Remove Metals, Nutrients and Other Runoff Pollutants

It simple really. There are a whole host of available, green, and low cost media that can be used to remove pollutants in runoff. Design: filtration cell. Chemistry is the key to knowing what media to use given the target pollutant.

Full Abstract:
There is a revolution afoot in stormwater treatment. This is the use of a whole range of low-cost, non-proprietary, readily available, and green media that effectively and passively remove a range of pollutants in stormwater runoff. What’s removed? Metals, phosphorus, solids, color, and potentially bacteria, and organic chemicals. What’s the media: recycled scrap iron that rusts into an effective pollutant binder. Spent lime from municipal drinking water treatment waste that creates a pH environment that can precipitate metals, remove phosphorus, and kill bacteria. Other media such as steel mill slag and biochar have the potential to augment iron and spent lime when the conditions are required. Traditional stormwater treatment approaches predominantly remove solids and are largely ineffective at removing dissolved pollutants. Media can be placed in filtration cells to capture the dissolved pollutants. The outcome is high rates of total and dissolved pollutant removal. This presentation will demonstrate the use of these new media in full scale systems, how they are designed, and how they are performing.


Keith Pilgrim

Water Resources Scientist, Barr Engineering
Keith Pilgrim is a water resources scientist at Barr Engineering. He has a passion for developing new ways to solve problems. One of his current passions is identifying new ways to treat all of the constituents in stormwater runoff, both the particulate and the dissolved fractions... Read More →

Attendees (6)