Page 7 - July- August 2018
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rich compost. Howard said local farms       go to the landfill, and general manager                                           so he’s adding a cement mixer into
and soil vendors use Sevier Solid           Tom Leonard wanted to change that.                                                the mix. It’s a hopper, cement mixer,
Waste compost, and it’s also used for       He worked with several equipment                                                  conveyor belt and a screen sprayed with
erosion control and other applications      companies to develop a system to                                                  jets.”
throughout the Southeast.                   separate and clean inorganics from the
                                            composted material.                                                                 The new system will divert another
  But more than that, zero-waste                                                                                              160 tons of that 400-ton daily total from
companies from as far away as Atlanta         “We knew materials in there could                                               the landfill.
and South Carolina bring their organics     be recycled, but on the back end they’re
to Sevier Solid Waste for composting.       dirty with compost stuck to them,”                                                Striving for Zero
                                            Howard said. “The commodities are so
  “Because of things like that, we can      dirty, and no one wants aluminum cans                                               The Sevier Solid Waste system is
find efficiencies and can find ways to      covered in compost.”                                                              always under development as they strive
make it more sustainable,” Howard said.                                                                                       for zero waste. Howard said the next step
                                              The new system, a combination                                                   is to find a way to screen and recycle
  It’s a system that works and works        of existing equipment and Howard’s                                                plastic film.
well, and it’s a model for municipalities   inventions, is being tested and comes
the world over. In Australia, three plants  online in July.                                                                     But, the system is already solid since it
located in Perth, New South Wales and                                                                                         doesn’t rely on participation rates. Sevier
Cairns have replicated the Sevier Solid       The residual inorganics are loaded                                              Solid Waste captures 100 percent of the
Waste model. In the U.S., Nantucket         into a hopper, and two people manually                                            waste within its borders. While residents
Island and Marlboro, Massachusetts,         remove items that can’t be recycled                                               can choose to sort their recycling or use
have copied the SSW composter, too.         or would break equipment, items like                                              local recycling centers, the composting
                                            textiles, garden hoses or Christmas                                               and nearly ready recycling system are a
  “We are constantly giving tours to        lights. Next, a piece of equipment by                                             catch-all.
people from all over the world, from        Nihot Technologies removes plastic film
Dubai and China and so many other           items like grocery bags, and a conveyor                                             “I think so many people in our society
places,” said Howard. “A few times a year   belt with a magnet pulls off metals.                                              today put their garbage on the curbside
we have people here from governments,       Finally, the last step sorts plastics and                                         and don’t think about it again,” she said.
or their version of the EPA looking to      aluminum. The recyclables are then                                                “The key is getting this message out to
replicate our model.”                       taken to three bunkers for cleaning and                                           people. It’s a comprehensive look at the
                                            transport.                                                                        whole waste.”
Recycling Retrofit
                                              “(The new cleaning system) is getting                                             Sevier Solid Waste welcomes tours
  While the composter has done              tweaked because we’re actually working                                            of the plant for groups large and small.
its job well, there’s still room for        on scalability,” said Howard. “(Leonard)                                          For information or to schedule a
improvement. Right now, the inorganic       realized we just needed to agitate more,                                          tour, call 865-453-5676 or visit www.
materials gleaned from the compost                                                                                            seviersolidwaste.com.

                                                                                                                                 Cleaning system
                                                                                                                               removes compost
                                                                                                                              from the recovered

                                                                                                                                        aluminum.

equipment which remove plastic film, metals, then finally plastics and aluminum.                                              View online at tnpublicworks.com	  7
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