Case Study: Commercial System on Poor Soil
Eljen GSF system effective for food market with poor soil conditions.
Problem: Â A food market in north central Pennsylvania needed to repair its septic system after it malfunctioned. Â Plans to expand the facility were also factored into the repair. Â The site had multiple constraints, including a 20-inch limiting factor (bedrock) as well as poor soils (127 mpi). Â because of this, a traditional system or elevated sand mound would not fit on the site.
Solution: Â The designer specified an Eljen GSF bed system for the site, using 192 B43 modules and a dual-compartment tank for the 1,250 gpd system. Â The system used low-pressure distribution by putting a 1.5 inch pressure lateral into the 4 inch SDR 35 perforated pipes that sit on top of the GSF modules. Â The bed was separated into two zones, each 48 feet wide by 97.5 feet long that were alternately dosed.
Result: Â The owners were able to expand the market and still meet the multiple site constraints with a system that is able to treat effluent to NSF Standard 40, has lower material costs, and requires no annual maintenance or media replacement in the future.
