Glass, paper, plastic, metal—there was a time when you had to sort recyclables before pickup. Now many municipalities have switched to single-stream recycling—which means that everything goes into one bin—because it increases the likelihood that people will recycle. So what happens after the truck picks up your mix of cans, bottles, and newspapers?
1. Most of our region’s recyclables end up in Elkridge, Maryland, where Waste Management runs the nation’s largest single-stream recycling facility. The plant processes 70 tons of recyclables an hour.
2. The incoming materials start their journey on a conveyor belt, where Waste Management workers remove trash, large objects, and plastic bags, which can clog the machinery.
3. The belt leads into a “disk screen,” where rows of spinning disks push large pieces of cardboard up and out of the stream as the smaller recyclables fall below.
4. The remaining materials land on another conveyor belt, where more workers remove any trash and leftover cardboard they spot.
5. The belt leads into another disk screen—this one a double-decker—that separates out lighter paper products such as newspapers. Smaller items like soda cans and water bottles fall below.
6. The remaining materials enter an enclosure where a magnet removes steel from the stream; glass bottles and jars are screened out and shattered by steel discs, their shards falling below; and aluminum cans pass through an eddy current, which imparts an electrical charge so another magnet can repel them onto a separate belt.
7. The items remaining in the stream—plastics and some trash—pass through a device called a TiTech PolySort. It hangs near the end of the final belt and uses an ultraviolet light to scan each item’s composition. When a plastic item is scanned, the PolySort registers its position on the belt. A few milliseconds later, the item reaches the precipice; just as it begins its plunge, the PolySort activates tiny air jets to shoot it into a receptacle above. Everything else falls below.
Illustrations by Chris Philpot.
This article appears in the June 2012 issue of The Washingtonian.
Michael J. Gaynor has written about fake Navy SEALs, a town without cell phones, his Russian spy landlord, and many more weird and fascinating stories for the Washingtonian. He lives in DC, where his landlord is no longer a Russian spy.
Where Does Your Recycling Go?
Find out what happens once the recycling leaves your curb.
Glass, paper, plastic, metal—there was a time when you had to sort recyclables before pickup. Now many municipalities have switched to single-stream recycling—which means that everything goes into one bin—because it increases the likelihood that people will recycle. So what happens after the truck picks up your mix of cans, bottles, and newspapers?
1. Most of our region’s recyclables end up in Elkridge, Maryland, where Waste Management runs the nation’s largest single-stream recycling facility. The plant processes 70 tons of recyclables an hour.
2. The incoming materials start their journey on a conveyor belt, where Waste Management workers remove trash, large objects, and plastic bags, which can clog the machinery.
3. The belt leads into a “disk screen,” where rows of spinning disks push large pieces of cardboard up and out of the stream as the smaller recyclables fall below.
4. The remaining materials land on another conveyor belt, where more workers remove any trash and leftover cardboard they spot.
5. The belt leads into another disk screen—this one a double-decker—that separates out lighter paper products such as newspapers. Smaller items like soda cans and water bottles fall below.
6. The remaining materials enter an enclosure where a magnet removes steel from the stream; glass bottles and jars are screened out and shattered by steel discs, their shards falling below; and aluminum cans pass through an eddy current, which imparts an electrical charge so another magnet can repel them onto a separate belt.
7. The items remaining in the stream—plastics and some trash—pass through a device called a TiTech PolySort. It hangs near the end of the final belt and uses an ultraviolet light to scan each item’s composition. When a plastic item is scanned, the PolySort registers its position on the belt. A few milliseconds later, the item reaches the precipice; just as it begins its plunge, the PolySort activates tiny air jets to shoot it into a receptacle above. Everything else falls below.
Illustrations by Chris Philpot.
This article appears in the June 2012 issue of The Washingtonian.
Michael J. Gaynor has written about fake Navy SEALs, a town without cell phones, his Russian spy landlord, and many more weird and fascinating stories for the Washingtonian. He lives in DC, where his landlord is no longer a Russian spy.
Most Popular in News & Politics
The Missing Men of Mount Pleasant
Another Mysterious Anti-Trump Statue Has Appeared on the National Mall
Muriel Bowser Defends Her BLM Plaza Decision and Looks Back on a Decade as Mayor
Yet Another Anti-Trump Statue Has Shown Up on the National Mall
Want to Search Donald Trump’s Truth Social Posts? A New Site Is Here to Help.
Washingtonian Magazine
July Issue: The "Best Of" Issue
View IssueSubscribe
Follow Us on Social
Follow Us on Social
Related
How Would a New DC Stadium Compare to the Last One?
The Culture of Lacrosse Is More Complex Than People Think
Did Television Begin in Dupont Circle?
Kings Dominion’s Wild New Coaster Takes Flight in Virginia
More from News & Politics
I Tried to Train for American Ninja Warrior
Trump Wants to Rename Soccer, the Nationals Chose a Shortstop, and Virginians Are the US French-Fry-Eating Champions
Guest List: 5 People We’d Love to Hang Out With This July
The Washington Nationals Just Fired the Manager and GM Who Led Them to a Championship. Why Has the Team Been so Bad Since?
FBI Building Now on Track to Leave DC After All, Whistleblower Leaks Texts Suggesting Justice Department Planned to Blow Off Federal Court Orders, and NPS Cuts Leave Assateague Island Without Lifeguards
Families of DC Air Disaster Victims Criticize Army’s Response, Trump Settles His Scores Via Tariff, and Police Dog Kicked at Dulles Returns to Work
This DC-Area Lawyer Wants More Americans Betting on Elections
Trump Threatens DC Takeover, Says He’d Run the City “So Good”; Supreme Court OKs Mass Federal Worker Layoffs; and You Should Go Pick Some Sunflowers