Other factors determining the effectiveness of streetsweeping are the frequency with which it is performed and the number of passes conducted per run. In order to remove 50 percent of street dirt then the streets should be swept at least once between storms and two passes should usually be conducted per run in order to achieve removal rates of total solids as high as 75 percent. The climate is another factor that contributes to the effectiveness of streetsweeping in that road sweeping tends to achieve better results in areas with marked wet and dry seasons
The type of road sweeper you should employ depends on the specific conditions present in the site to be swept. Mechanical sweepers are better at removing large debris and cleaning wet streets but they can also produce significant amounts of airborne dust. Vacuum-assisted and regenerative air sweepers, on the other hand, are able to pick up more fine particles and heavy metals but are less effective when it comes to cleaning wet streets. If cutting down on respirable particulate matter is a priority then vacuum-assisted dry sweepers should ideally be used.
The type of road sweeper you should employ depends on the specific conditions present in the site to be swept. Mechanical sweepers are better at removing large debris and cleaning wet streets but they can also produce significant amounts of airborne dust. Vacuum-assisted and regenerative air sweepers, on the other hand, are able to pick up more fine particles and heavy metals but are less effective when it comes to cleaning wet streets. If cutting down on respirable particulate matter is a priority then vacuum-assisted dry sweepers should ideally be used.
