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O <br /> 1 � � <br /> Commercial Treatment Systems <br /> Design Considerations for AdvanTex®Treatment Systems <br /> Tableof Contents...........................................................................................Page <br /> Equations and Parameters Frequently Used in This Design Criteria................................................. 2 <br /> Introduction.............................................................................................. 3 <br /> AdvanTex®Model Descriptions .............................................................................. 3 <br /> AX20 ............................................................................................... 3 <br /> AX100 .............................................................................................. 4 <br /> AX-MAX............................................................................................. 5 <br /> DesignBasis............................................................................................. 6 <br /> Average Day and Maximum Day Flows.................................................................... 6 <br /> Primary-Treated Effluent Wastewater Strength ............................................................. 6 <br /> Discharge Treatment Levels and Sampling Requirements..................................................... 7 <br /> Likelihood of System Expansion and Potential Permit Changes................................................ 7 <br /> Highly Variable or Seasonal Flow Considerations............................................................ 7 <br /> WaterSoftener Backwash .............................................................................. 7 <br /> ApplicationTypes..................................................................................... 8 <br /> Treatment System Configurations ............................................................................ 9 <br /> Standard AdvanTex Systems ............................................................................10 <br /> AdvanTex Systems for the Advanced Removal of Nitrogen ....................................................10 <br /> AdvanTex Systems for the Advanced Removal of Ammonia ...................................................11 <br /> Process Stages—AdvanTex Treatment Systems.................................................................11 <br /> Primary Treatment Stage...............................................................................11 <br /> Pre-Anoxic Treatment Stage ............................................................................12 <br /> FlowEqualization Stage................................................................................12 <br /> Pre-Aeration Treatment Stage...........................................................................13 <br /> Standard AdvanTex Treatment Stage......................................................................13 <br /> Post-Anoxic Treatment Stage............................................................................13 <br /> AdvanTex Treatment—Second Stage of Two-Stage and Three-Stage Treatment...................................14 <br /> DisinfectionStage.....................................................................................14 <br /> Performance Requirements and Unit Sizing ....................................................................14 <br /> Performance of Typical AdvanTex Systems.................................................................14 <br /> Standard AdvanTex Stage Sizing.........................................................................15 <br /> Second Stage AdvanTex Sizing in Two-Stage Systems .......................................................16 <br /> Design Considerations .....................................................................................17 <br /> Recirculation-Blend Tank Sizing .........................................................................17 <br /> RecirculationPump Sizing..............................................................................17 <br /> AdvanTex TCOM'm Control System........................................................................18 <br /> AdvanTex System Ventilation............................................................................18 <br /> Anti-Buoyancy Features................................................................................18 <br /> pH Effect on Nitrification ...............................................................................19 <br /> Cold Weather Considerations............................................................................19 <br /> Appendix A:Sizing for Primary and Pre-Anoxic Tankage..........................................................21 <br /> Appendix B:Basic Equations................................................................................23 <br /> Appendix 1A:Example Design for an Apartment Complex(Application Type 1)........................................27 <br /> Appendix 2A:Example Design for a Campground(Application Type 2) ..............................................31 <br /> Appendix 3A:Example Design for a School (Application Type 3) ...................................................34 <br /> Appendix 4A:Special Considerations for Greywater Treatment Systems(Application Type 6)............................38 <br /> Orenco Systems°•800-348-9843•+1 541-459-4449•www.orenco.com NDA-ATX-1 <br /> Rev.8,©10/20 <br /> Page 1 of 38 <br />