Home Must Reads Blue Heron mill uses compost to filter water

Blue Heron mill uses compost to filter water

| Print |  Email
Must Reads
Monday, August 05, 2013

Roof runoff and seepage under the shuttered Blue Heron mill in Oregon City is getting a 6-foot wall of compost to filter the water before it returns to the Willamette River.

The compost Pettey uses looks like playground tanbark -- he found a chewed up Lego in one batch. But this bark has cooked in compost for six months, picking up microbes and fraying the wood to better catch larger waste particles. At the mill, the Gullywasher crew packs it into green mesh composting "socks" designed to absorb heavy metals. These are stacked, layer by layer, into metal cages so that the dirty water hits the compost first, then washes through a second layer of drainage rocks. Stripped of zinc, copper and any other contaminants, the water runs straight down the bank and into the Willamette.

Pettey said this system is a first for industrial wastewater cleanup. A main advantage is that it requires far less electricity and manpower than the current process, which pumps the affected water -- with some stops in between -- to a lagoon in West Linn. Darwish said the compost system will save money for the land's trustees and make the clean-up more environmentally friendly.

Read more at OregonLive.com.

 

More Articles

Podcast: Turn Things Around with David Marquet

Contributed Blogs
Friday, October 17, 2014
davidmarquet thumbBY TOM COX | OB BLOGGER

How can you move from a command-and-control leadership model to one of true empowerment and accountability? David Marquet did, and he took notes along the way.


Read more...

Shifting Ground

November/December 2014
Wednesday, October 22, 2014
BY JOE ROJAS-BURKE

Bans on genetically modified crops create uncertainty for farmers.


Read more...

Woman of Steel

November/December 2014
Wednesday, October 22, 2014
BY LINDA BAKER

Tamara Lundgren tackles the challenges—without getting trampled.


Read more...

Measure 91: What Oregon Businesses Need to Know

Contributed Blogs
Wednesday, October 15, 2014
91 thumbBY DIANE BUISMAN

Some common misconceptions employers have about marijuana.


Read more...

Two Sides of the Coin

Contributed Blogs
Wednesday, October 22, 2014
22 twosidesBY JASON NORRIS

Historically, when the leaves fall, so do the markets. This year, earnings, Europe, energy and Ebola have in common? Beyond alliteration, they are four factors that the investors are pointing to for this year’s seasonal volatility.


Read more...

What I'm Reading

November/December 2014
Wednesday, October 22, 2014

Peter Lizotte at ACME Business Solutions and Roger Busse at Pacific Continental Bank share their favorite reads.


Read more...

The clean fuels opportunity

News
Monday, November 10, 2014
111014-dirtyfuel-thumbBY KIM MOORE | OB RESEARCH EDITOR

A market for low-carbon transportation fuels has a chance to flourish in Oregon if regulators adopt the second phase of the state’s Clean Fuels Program.


Read more...
Oregon Business magazinetitle-sponsored-links-02
SPONSORED LINKS