1. Waste Water Disposal Plumbing Systems CNST 305 Environmental Systems 1 Dr. Berryman 2aWaste 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)

2. Individual Waste Treatment Individual Usually residential or small commercial use or areas that have no access to municipal treatment plant

3. Primary Treatment Septic Tanks* Individual - Primary

4. Individual – Primary (cont.) Improvements on Primary System Increase digestion rates.

5. Individual – Secondary System

6. Drain Field

7. Drain Field – “Perc” Test Length of drain tile determined by Percolation test

8. Mounds with Leach Beds

9. Seepage Pits

10. Evaporation Pits

11. Sand Filter

12. Individual – Tertiary System

13. 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:

14. Sewage Treatment Plants Similar to individual Three stages of treatment FILM

15. Next time Storm Drainage 2aWaste 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)