Sponsored by Energy Trust

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

Crowdfunding 2.0

News
Tuesday, December 02, 2014
120214-crowdfund-thumbBY LINDA BAKER

A conversation with attorney Erich Merrill about the latest way to raise money from large groups of people.


Read more...

Corner Office: Sheree Arntson

January-Powerbook 2015
Saturday, December 13, 2014

Checking in with the managing director of Arnerich Massena.


Read more...

Election Season

November/December 2014
Wednesday, October 22, 2014

We didn’t intend this issue to have an election season theme. But politics has a way of seeping into the cracks and fissures.


Read more...

See How They Run

January-Powerbook 2015
Friday, December 12, 2014
BY LINDA BAKER

Studying ground-running birds, a group that ranks among nature's speediest and most agile bipedal runners, to build a faster robot.


Read more...

Leading with the right brain

News
Tuesday, December 09, 2014
120914-manderson-thumbBY LINDA BAKER

On the eve of the Portland Ad Federation's Rosey Awards, Matt Anderson, CEO of Struck, talks about the transition from creative director to CEO, the Portland talent pool and whether data is the new black in the creative services sector.


Read more...

The short list: Holiday habits of six Oregon CEOs

The Latest
Thursday, December 11, 2014
121214-xmaslist1BY JACOB PALMER | OB DIGITAL NEWS EDITOR

We ask business and nonprofit leaders how they survive the season.


Read more...

Corner Office: Timothy Mitchell

January-Powerbook 2015
Saturday, December 13, 2014

A look-in on the life of Norris & Stevens' president.


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