10 Tips for a cleaner industry
- Use a totally enclosed system for the loading, unloading, handling, transfer or storage of cement, pulverized fuel ash and/or other dusty raw materials
- Vent all cement/fly ash storage silos and weigh hoppers to a fabric, bag house or cartridge filter system
- Substitute at least 15% to 35% fly ash for cement in concrete mixes. Some applications will accommodate up to 70%
- Conduct the entire mixing operation inside an enclosed process building to prevent dust and visible emissions
- Do not handle aggregates 5 millimeters or less in open areas
- Enclose belt conveyors used for handling materials on top and 2 sides with a metal board at the bottom to eliminate any dust emissions due to wind effects
- Plan with the concrete truck driver exactly where rinsing can be done. Avoid locations where run-off will get into topsoil or flow into surface water
- Sweep site regularly to remove dust build-up
- Consider installing a residual concrete recycling system that uses carbon dioxide or acid (carbon dioxide is safer) to lower pH, and filtration to remove solids
- Consider metering or using a timer to dispense water for mixer flushing
To eliminate any dust emissions due to wind effects use enclose belt conveyors