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

Greenpeace (temporarily) prevents Shell oil ship from leaving Portland

The Latest
Thursday, July 30, 2015
hangersBY JASON E. KAPLAN | STAFF PHOTOGRAPHER

Greenpeace activists suspended themselves from the St. John's Bridge in an attempt to prevent a ship from heading to the Arctic.


Read more...

Storyteller in Chief: Power Player

September 2015
Wednesday, August 19, 2015
BY LINDA WESTON

In 1996, after a 17-year career in the destination marketing industry, where I gained national standing as the CEO of the Convention & Visitors Association of Lane County, I was recruited by the founders of a new professional basketball league for women. The American Basketball League (ABL) hoped to leverage the success of the 1996 USA women’s national team at the Atlanta Olympics — much like USA Soccer is now leveraging the U.S. Women’s National Team’s victory in the World Cup. The ABL wanted a team in Portland, and they wanted me to be its general manager.


Read more...

Quake as metaphor

Linda Baker
Tuesday, July 14, 2015
071515-earthquakia-thumbBY LINDA BAKER

The Big One serves as an allegory for Portland, a city that earns plaudits for lifestyle and amenities but whose infrastructure is, literally, crumbling.


Read more...

5 questions for ImpactFlow CEO Tyler Foreman

The Latest
Thursday, August 13, 2015
impactflowthumbBY JACOB PALMER | DIGITAL NEWS EDITOR

Portland-based startup ImpactFlow recently announced a $5.7 million funding round. CEO and co-founder Tyler Foreman talks about matching businesses with nonprofits, his time at Intel and the changing face of philanthropy.


Read more...

Bendafornia: What’s driving the Northern California migration?

Contributed Blogs
Wednesday, August 05, 2015
bendiforniathumbBY KEN MAES

A huge migration from Northern California has contributed to average 16% growth per year since 1990.


Read more...

Reader Input: Road Work

March 2015
Wednesday, July 15, 2015

Oregon's roads are crumbling, and revenues from state and local gas taxes are not sufficient to pay for improvements. We asked readers if the private sector should help fund transportation maintenance and repairs. Research partner CFM Strategic Communications conducted the poll of 366 readers in February.


Read more...

Ranking the airlines that fly PDX

The Latest
Friday, August 14, 2015
airlinesthumbBY JACOB PALMER | DIGITAL NEWS EDITOR

17 airlines make stops at Portland International Airport, but not all are created equal when it comes to customer service.


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