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Gravisand® filtration technology incorporates the principles and advantages of conventional traveling bridge designs but uses improved methods of accomplishing and maintaining filtration and regeneration.
Gravisand® filtration systems are a favorite amoung wastewater treatment plant operators because of their exceptionally low life-cycle costs and their legendary effectiveness in wastewater applications. The uniquie features of the Gravisand® filtration system eliminate issues that may occur with conventional filter systems. Issues that are eliminated include:
- Off-line downtime for maintenance on underwater mechanisms
- Off-line downtime for filter bed maintenance
- Filter media loss through the underdrain
- Migration of filter media to the ends of the tank
- Underdrain failure
- Bridge derailment
- Excessive backwashing
- Unique Tubular Underdrain
Prevents media leakage and irreversible fouling
- IAS System
Provides maximum media cleaning without ancillary mechanical equipment
- No-Wear Backwash Shoe
Eliminates seal face wear and side loading of the traveling bridge
- Indexing System
Accomplishes superior cleaning by allowing the bridge to remain stationary at the index point
- Bolt-in Upgrade Option
Conveniently retrofits ineffective filters to the Gravisand technology
- XCELL configuration
Saves on installation and equipment costs by eliminating the need for cell dividers
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