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01 e • O <br /> Design <br /> Hydraulic Loading <br /> Design average HLRA is 75 gpd/ft2; Design Maximum HLRA is 125 gpd/ft2(from page 15). Determine the textile area required based on Aver- <br /> age Day Hydraulic Load,AHLRA using Equation 1.2: <br /> (5400 gpd) f 2 <br /> AHLRA — 75 gal/f ted — 72 t <br /> Determine the textile area required based on Maximum Day Hydraulic Load,AHLRA, using Equation 1.2: <br /> A (10800 gpd) _ 86.4 ft2 <br /> HLRM — 125 gal/ft2 — <br /> Ammonia Loading <br /> Design average ALRA is 0.005 lbs NH3-N/ft2. Determine the value of First-Stage AdvanTex effluent TKNe using Equation B6 in Appendix B: <br /> TKNe = 50 mg/L x(1 — 0.95) = 2.5 mg/L <br /> Determine the pounds per day of Average Day TKN Load,TKNe using Equation 131 from Appendix B: <br /> TKNe = (2.5 mg/L)*(8.34 x 10-6)*(5,400 gpd) = 0.1131bs/d <br /> Determine the textile area required based on Average Day Ammonia Load,ALRA using Equation 1.4: <br /> (0.113 lbs/d) <br /> f 2 <br /> AALRA = 0.005lbs/ft2d = 23 t <br /> The treatment area associated with the Design Maximum Day Hydraulic Loading Rate is the most restrictive;therefore,the second stage <br /> AdvanTex area should be a minimum of 86 ft2. <br /> Treatment Unit Options—Second Stage <br /> Option 1:Using AX-Max units—86 ft2 area <br /> AX-MAX100-21 (Max unit includes recirc-blend tankage and discharge tankage) <br /> Option 2:Using AX pod units —86 ft2 area <br /> (1)AX100,2700-gallon recirc tank or 2160-gallon discharge tank(2700-gallon recirculation-blend tank sized at minimum of 25%of QM per page <br /> 17 of the Design Criteria;2160-gallon discharge tank size based on local regulation,but typically sized at minimum of 20%of QM) <br /> Other Design Notes <br /> • Ensure access to treatment site for maintenance activities <br /> • Ensure availability of water at treatment site for maintenance activities <br /> • Adequate alkalinity control <br /> • Adequate temperature control <br /> NDA-ATX-1 Orenco Systems®•800-348-9843•+1 541-459-4449•www.orenco.com <br /> Rev.8,©10/20 <br /> Page 30 of 38 <br />