4. Waterless dust control mechanical

How it works: These sweepers have a small fan and filter system that evacuate the dust created by the brooms and capture it in a filter, rather than relying on wetting the dust.

Major benefits: They pick up bulky material down to fine particles without using water for dust control, enabling them to be used for sweeping in freezing weather or industrial applications such as removing water-reactive compounds like cement.

Potential drawbacks: Because they have both mechanical systems and a fan/filter system, they are more costly and complex to maintain than mechanical-only sweepers.

5. Reduced-water dust control regenerative

How it works: While not completely waterless, filtered regenerative air sweepers provide the efficiencies and simplicity of regenerative technology.

Major benefits: Positively captures much of the fine dust that often continues to circulate through the regenerative loop, allowing for significantly less water to control ambient dust and lubricate the impeller.

Potential drawbacks: Because these sweepers have a fan/filter system, they are more costly and complex to maintain than regenerative-only sweepers.

Brian Giles is sweeper products manager of Elgin Sweeper in Elgin, Ill. Fore more, visit www.elginsweeper.com, e-mail bgiles@elginsweeper.com.

Using sweepers to reduce pollution

To help reduce water pollution:

  • Sweep before rain
  • Sweep often
  • Sweep where the dirt is
  • Sweep dry to reduce fines

To help reduce air pollution:

  • Choose sweepers with low-emission engines
  • Sweep often and sweep dry to remove fines
  • Capture fugitive dust

Tips on sweeping for pollution control

  • Using a worn out or maladjusted sweeper, regardless of type, does not help and might even cause more pollution.
  • Make sure all sweepers are in serviceable condition and are being used as the manufacturer intended.