1. Bank Filtration Designs Applied to Seawater Desalination and Aquifer Storage and Recovery Projects
Thomas M. Missimer, Ph.D., P.G. Missimer Groundwater Science
A Schlumberger Company

2. Surface Water Intake Design Issues For
Reverse Osmosis Treatment Facilities

3. Issue Problems Water depth Intake Elevation (offshore)
Water quality variations
Water quality fluctuations
Storm damage
Damage from ship collision

4. Issue Problems Intake Cutoff Intake Screen Pipe Material
Contamination of Source Water
Clogging and maintenance
Corrosion
Maintenance and access

5. Issue Problems Intake Pump Corrosion Backup Power failure
Damage potential (location)
Backflushing capability

6. Why use natural filtration methods rather than conventional intake designs?
Provides primary pre-treatment
Reduces exposure to contamination
Can improve raw water quality
Zebra mussel issue
Less risk of damage during floods
Provides some protection during ` floods

7. Cost Advantage of Alternative Intakes
Reduction in pre-treatment cost
Reliability saves operating costs

8. Natural Filtration Methods
Shallow wells (low capacity banks)
Deep wells with induced vertical leakage
Galleries at the riverbank edge to the interior
Galleries beneath the river

9. Natural Filtration Methods
Ranney collector wells
Water tunnel concept with laterals
Horizontal wells

10. Shallow Wells

11. Shallow Wells

12. Deep Well with Induced Filtration

13. Galleries at the Shoreline to the Interior
River/Lake

14. Galleries at the Shoreline to the Interior

15. Galleries Beneath the Surface Water Body

16. Galleries Beneath the Surface Water Body

17. Ranney Collector Wells

18. Ranney Collector Wells

19. Ranney Collector Wells

20. Water Tunnel with Collectors

21. Water Tunnel with Collectors

22. Horizontal Well

23. Aquifer Storage and Recovery Applications
Shallow vertical wells
Horizontal wells
Canal/Reservoir bank galleries

24. Shallow well for ASR intake

25. Shallow wells for ASR intake

26. Horizontal Wells for ASR System Intake
Under canal or reservoir
Parallel to canal or reservoir

27. Horizontal Well Cross-section

28. Galleries for ASR System Intake
River/Lake

29. Galleries for ASR System Intake