| 1. | Which is not a typical fresh water source for producing potable water? |
| | River |
| | Lake |
| | Deep groundwater |
| | Ocean |
| 2. | Desalination processes remove _____________ from seawater and brackish water. |
| | Dissolved salts |
| | Minerals |
| | Dirt |
| | Oxygen |
| 3. | The molecular weight cut off for RO membrane performance is typically in the range of __________ daltons for organic chemicals. |
| | 50-100 |
| | 100-300 |
| | 300-500 |
| | Greater than 500 |
| 4. | During pretreatment a disinfectant, often chlorine, will be added to ________ biofouling and protect the membrane from degradation. |
| | Increase |
| | Reduce |
| 5. | Installation and operation of a desalination facility will have the potential for adverse impacts on air quality, water/sea environment, and ground water. |
| | True |
| | False |
| 6. | The figure below shows the treatment plant process sequence of a typical plant. 
|
| | Post-Treatment |
| | Filtering |
| | Desalination |
| | None of the above |
| 7. | _________________ subsurface intakes are more suitable for larger seawater desalination plants. |
| | Vertical |
| | Horizontal |
| 8. | Open ocean intakes are suitable for all sizes of seawater desalination plants, but are typically more economical for plants of production capacity higher than ___________ . |
| | 20,000 m³/day |
| | 30,0000 m³/day |
| | 40,000 m³/day |
| | 50,000 m³/day |
| 9. | The greatest single ecological impediment in selecting the site for a desalination facility is: |
| | Economic Impact |
| | Political Impact |
| | Environmental Impact |
| | None of the above |
| 10. | Until the early 1990’s, __________ was the most commonly employed method of seawater desalination. |
| | Multistage flash distillation |
| | Thermal Desalination |
| 11. | There is no direct contact between the heating steam system and the desalination process: |
| | True |
| | False |
| 12. | Membrane desalination is a process of separation of _____________ from the source water using semipermeable membranes. |
| | Oxygen |
| | Debris |
| | Minerals |
| | None of the above |
| 13. | Salt rejection refers to the effectiveness of a membrane to ____________ salts from solution. |
| | Remove |
| | Add |
| 14. |  The figure above is an RO membrane with a _____________ pressure pump. |
| | High |
| | Low |
| 15. | _______________ is the most widely used disinfection method. |
| | Desalination |
| | Boiling |
| | Chlorination |
| | None of the above |
| 16. |  The figure above is of a ______________ unit. |
| | Small distiller |
| | Vapour compression |
| | Desalination |
| | None of the above |
| 17. | Pre-treatment of the source after intake water is normally designed to remove contaminants that will interfere with the __________ process such as by scale formation or fouling membranes. |
| | Disinfecting |
| | Post treatment |
| | Desalination |
| | Distilling |
| 18. | The quality of the blended water is particularly relevant if mixing of incompletely treated water with desalinated water occurs __________ distribution. |
| | Prior to |
| | After |
| 19. | Thermal processes generally require _________ pretreatment than membrane based processes. |
| | More |
| | Less |
| 20. | General principles of post-treatment disinfection of desalinated water _______________ those of disinfection of freshwater sources of drinking water. |
| | are similar |
| | vary from |
| 21. | Public health addresses: |
| | the quality of life |
| | improvement in community health |
| | potential risks associated directly or indirectly with the desalination project |
| | All of the above |
|
