Eljen designed the GSF, or Geotextile Sand Filter, for sites specifically in need of high performance in constricted areas. Each advanced wastewater treatment module is made up of a geotextile fabric and a plastic core material that provide vertical surface area and oxygen transfer to provide an alternative for onsite septic leachfield systems.“The benefit of a GSF system is that it provides secondary treatment, preserves the long-term acceptance rates of the soil and provides more surface area in a smaller footprint,” says Eric Daniels, senior technical lead for Eljen. “These modules control and develop biomat and biological communities within the
