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Camp Lo Mia, AZ Flow BODS TSS TKN NO3-n TN FC gpd mg/L mg/L mg/L mg/L mg/L MPN/100 ml Septic Tank Effluent 4,014 >250 55 155 < 0.1 155 TNTC Textile Filter Effluent 4,014 12 3 3 76 79 625 Manufacturing Facility, OR An Oregon manufacturing facility that seasonally operates two shifts with as many as 40 employees. Its primary wastewater flow comes from two restrooms and a couple of rinse sinks. A 1500-gallon meander septic tank has provided the primary treatment since 1996. The tank was fitted with a 10 square foot recirculating textile'treatment system (see Figure 8) in September of 1999. The system was installed without a blower. The ammonia level is high, typically of restroom flows- Results from follows: weekly testing are as Mfg. Facility, OR Flow BODS TSS TKN NO3-n TN FC gPd mg/L mg/L mg/L mg/L mg/L MPN/100 ml Septic Tank Effluent 271 192 54 132 2 134 na Textile Filter Effluent 175' 8.6 5 59 14.6 77 single shift occupancy since installation na l l - Figure 8: Manufacturing Facility Textile Filter System Schematic Conclusion Packed bed sand and gravel filters continue to provide excellent service and low cost maintenance. Onsite wastewater treatment systems incorporating textile medium appear to have a bright future. The lightweight textile medium with applicable high loading rates have allowed the production of small, affordable, pre-manufactured treatment units that offer all theinherent benefits of packed bed filter treatment systems. Test data from the over 50 residential and commercial systems has shown that the textile filters are providing consistent, high quality treatment. In certain modes of operation, substantial nitrogen removal has been achieved, often below the drinking water standard of 10 mg/L- NTP-FLT-TRB-ES8-HLB-1 zo Page 10