The GSF (Geotextile Sand Filter) advanced wastewater treatment and dispersal system from Eljen Corporation is designed to provide treatment and dispersal in the same footprint, while keeping installations easy and maintenance minimal. Comprised of a two-stage pretreatment process, the geotextile modules apply filtered septic tank effluent to the soil, increasing the soil’s ability to accept the effluent and increase the long-term acceptance rate. Its design provides increased surface area for biological treatment that greatly exceeds the module’s absorption area. Open-air channels within the module support aerobic bacterial growth on the module’s geotextile fabric interface, surpassing the surface area required for traditional absorption systems. The result is simple installations in a smaller soil absorption area. The system is tested and certified by NSF to NSF/ANSI Standard 40. 800/444-1359;

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