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Biofiltration Technology
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| In my view, biofiltration systems will be the “workhorse” technology
of the decentralized concept. This is because the technology is robust and
inherently quite stable, and can operate reliably with a minimum of active
oversight. The oldest and most familiar form of biofiltration technology
is the intermittent sand filter. As Harold Ball of Orenco Systems, Inc.,
once said of this technology, it’s like your refrigerator. It just
keeps on working without you thinking about it. Sure, something might break
down at some point, but very infrequently. And just like with your refrigerator,
you’ll need to get it fixed quickly—in the case of your refrigerator
so your food doesn't spoil, in the case of your wastewater system so your
toilets don’t back up—but once it’s fixed, it just keeps
on running again. These papers offer a thorough background on and explanation
of biofiltration technology. |
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| A review of the development of sand filter
technology provides an understanding of how the principles of this technology
are used to produce a system design concept that maximizes the efficiency
of the biofiltration process and minimizes the operational and maintenance
liabilities of a practically workable system. This concept is called “high-performance
biofiltration”. Detailed review of system component design provides
the designer with the basic knowledge required to design a high-performance
biofiltration system, provides the installer with insight into how the system
can be constructed. The background and details provide the regulator with
sufficient knowledge to judge applications of this technology submitted
for review. |
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| A detailed review of how the results the
definitive proof-of-concept studies for the high-performance biofiltration
concept conducted on Washington Island, Wisconsin, were used to formulated
a "standardized" design approach for this technology. Includes
summary data tables from the Washington Island project, a review of component
sizing and construction for "on-site" (single-family home) wastewater
systems utilizing this technology, and a brief discussion of drip irrigation
as the perfect dispersal system to mate with the high-performance biofiltration
treatment system. |
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