PB2a-WasteWaterDisposal-UNLConstructionProgramspb2a-污水-除非施工方案

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Waste Water Disposal,Plumbing Systems,CNST 305,Environmental Systems 1,Dr.Berryman,2a,Waste Water Disposal and Storm Drainage,Chapter 4,7;Appendix A(Wentz)and 8.6-8.7(Toa),4.11 Analysis and Design of Construction Systems-Mechanical(3 hrs),Individual Waste Treatment,Individual,Usually residential or small commercial use or areas that have no access to municipal treatment plant,Primary Treatment,Septic Tanks*,Individual-Primary,Individual Primary(cont.),Improvements on Primary System,Increase digestion rates,.,Individual Secondary System,Drain Field,Drain Field “Perc Test,Length of drain tile determined by Percolation test,Mounds with Leach Beds,Seepage Pits,Evaporation Pits,Sand Filter,Individual Tertiary System,Cost Comparisons,Relative costs of home sewage treatment systems as compared to the septic tank-absorption field system(assumed to be$2,500 in spring,1980).,SOURCE:,Sewage Treatment Plants,Similar to individual,Three stages of treatment,FILM,Next time,Storm Drainage,2a,Waste Water Disposal and Storm Drainage,Chapter 4,7;Appendix A(Wentz)and 8.6-8.7(Toa),4.11 Analysis and Design of Construction Systems-Mechanical(3 hrs),