Eljen GSF
The Eljen GSF (Geotextile Sand Filter) is an alternative for onsite septic leach field systems.
Passive Advanced Treatment Technology
The Eljen GSF (Geotextile Sand Filter) is an alternative for onsite septic leachfield systems. Independent and third party testing is used to assess and confirm the GSF's performance under a variety of conditions.
Treatment and disposal in the same footprint
Flexible site installation
Reduced site impact
Lightweight and easy to handle
How the Eljen GSF System Works
A Specified Sand layer provides additional filtration, and prevents saturated conditions.
Each GSF Module is made up of a geotextile fabric and a plastic core material that work together to provide vertical surface area and oxygen transfer. The GSF System applies treated effluent to the soil, increasing the soil’s long-term acceptance rate. A Specified Sand layer provides additional filtration, and prevents saturated conditions.
The Eljen GSF System
Primary Treatment Zone
- Perforated pipe is centered above the GSF Module to distribute septic effluent over and into corrugations created by the plastic core of the GSF Module.
- The GSF Module’s unique design provides increased surface area for biological treatment of nutrients and contaminants.
- Open air channels within the GSF Module support aerobic bacterial growth on the Module’s geotextile fabric interface, and promotes oxygen in the system.
- An anti-siltation geotextile fabric covers the top and sides of the GSF Module to protect the system from the migration of fines.
- The GSF Module provides biomat management, and takes the burden of treatment and biomat development off of the native soil.
Secondary Treatment Zone
- Effluent drips into the Specified Sand layer and supports unsaturated flow into the native soil.
- The Specified Sand layer also protects the soil from compaction and helps maintain cracks and crevices in the soil.
- Native soil provides final filtration and allows for groundwater recharge.
For more specifications and detailed installation instructions consult the appropriate Design and Installation Manual.
INSTALLATION
Installation shall comply with the latest installation instructions published by Eljen Corporation and abide by local regulations. Eljen Modules are installed along their 4-foot lengths on a base of stabilized Specified Sand, with the painted stripe facing up. A 4˝ perforated pipe is centered on top of the Modules, and is secured with supplied metal clamps (one per Module). Cover fabric is supplied by Eljen and substitutions are not allowed. Specified Sand is placed along both sides of the Module, and at the beginning and end of each row once the cover fabric is in place.
For more specifications and detailed installation instructions consult the appropriate Design and Installation Manual.
