In
the News
Slow sand
filters and Blue Future Filters
Slow sand filters compared with
Ultrafiltration, cost and carbon footprint
In a recent paper
comparing slow sand filtration (based on performance of an SSF-10 used
as prefiltration for a desalinization plant in Santa Cruz
California) a 6 mgd SSF plant was expected to save 311 metric tons per
year of carbon dioxide over other systems due to significantly less
transportation, chemical, and energy costs. (Meyhofa, Paul, PE, CDM,
Reducing the Carbon Footprint of Open Intake Seawater desalinization:
Slow Sand Filtration before Reverse Osmosis)
In another study in Abbotsford, British Columbia where a
ssf and an ultrafiltration system were run side by side, the manager of
the plant stated the ssf represented "three times the capacity at half
the cost. (Derick Casey, Manager, Water Supply Services, Abbotsford,
B.C.)
House
of the Children and Humphrey Blackburn in "Official" Magazine
"Official",
the magazine of IAPMO, the International Association of Plumbing and
Mechanical Officials (the nation's building inspectors), featured a
beautiful article on Nancy Santullo's Peru project with information,
drawings and photos of the slow sand filters there.
Link to
International Reference Center, The Hague.
The IRC, a powerful information link for water and
sanitation.
The
International Reference Center provides a source of information for all
working on
water and sanitation issues in developing countries.
ABCs
of maintaining slow sand filters
A possible treatment of choice for rural
homeowners and small systems.
by Humphrey Blackburn
"...If
you have customers who rely on private surface water sources for
household use, slow sand filtration - or more accurately biologically
active filtration - may be an effective choice for water treatment." --
From the September 1998 edition of Water Technology
magazine.
Raincatcher, Peru
Harvesting natural rainwater to quench the world's thirst.
"...After
catching and storing the rainwater, the next chore is cleaning it for
absolute safe drinking. Another key person in this story is a man by
the name of Humphery Blackburn..."
Get
the Upper Hand With Slow Sand
Filters effective on surface water.
By Humphrey M. Blackburn
"Surface
water is sometimes the only available safe water source for rural
homeowners. But treating surface water can present real headaches for
the water treatment professional...." -- From the April 1997
edition of Water Technology magazine.
Goto
Reviews and MetaEfficient
A Guide to
the Most Efficient Things in the World.
"Slow sand filters are
perhaps the most efficient means of producing clean drinking water."
-- From GotoReviews.com
