Denver Filter

STREET ACCESS The system is designed so that pedestrians can drop recyclables into a receptacle at street level that connects directly to the tunnels, which move the items through the city to predetermined exit points.

MAGNET MECHANISM A series of electromagnets would encircle each of the flexible tube linings, causing the tubes to contract and expand based on the attractive and repellent properties of the magnets themselves. This would mimic the smooth muscle contractions of the human intestines, called peristalsis.

RECYCLING TUNNEL By connecting the collection receptacles directly to the tunnels, the system requires relatively few moving parts, in turn needing much less maintenance by city workers.

MOVEMENT OF WASTE To ensure that the tunnels aren't overcome by storm water, a perforated metal grate sits near each opening, allowing water to run off through a link to the existing storm sewer system.

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