By: Alyssa Beerling, Frankie Victoria, Joey By: Alyssa Beerling, Frankie Victoria, Joey Seiler, Melissa LupinacciSeiler, Melissa Lupinacci

http://www.sciencedaily.com/releases/2010/04/100406093636.htm

What is Desalination? Misconception of Desalination

is a process that involves the removal of brine and other minerals, such as chemical compounds from sea water or brackish water.

Desalination of sea and brackish water have offered a wide rang of human health, socio-economic, and environmental benefits by providing an unlimited and constant supply of high quality drinking waterPotential Negative

Impact• Impairment of coastal water quality• Affects on marine life• Air pollution emissions which are attributed to the

energy and cost demand of the process

Reverse Osmosis

http://coolingtower-design.com/2011/01/25/reverse-osmosis

Distillation

http://www.ag.ndsu.edu/pubs/h2oqual/watsys/ae1032w.htm

Output of Desalination Plants

Impacts

BrineTwice as much saltToxic Chemicals

Treatment/Maintanence Heavy metals

Heated discharge

Subtle Changes in the marine environment can affect it extensivelyWorldwide ocean:

Temperature= 15 to 20 Degrees Celsius

Salinity= 30 to 37 pptAffects of brine

Salinity Chemicals

Thermal pollutionGroundwater is also at risk

http://www.hardrainproject.com/hrpl?n=1178

Source Water AcquisitionMarine Water Intake Issues

ImpingementEntrainment

Brackish GroundwaterSustainability of the aquifer SubsidenceSeawater intrusion

Environmental Impacts from Concentrate ManagementCoastal Concentrate Discharge into Oceans,

Seas, EstuariesStudies of Effects of Concentrate on Specific

Marine OrganismsCase Studies

Sensitivity to Salinity (Rinne, 1971) Effects of Concentrate on Sea grass (Latorre, 2005)

Economic CostsTampa Bay Seawater

Desalination Plant150 million dollar

operation Yuma Desalting Plant

245 million dollar project

Costs of deliveryEfficiency of

desalination15%-50% efficient

Energy CostsSolubility properties

of saltDesalination in

AustraliaCoal as energy

sourceDesalination in

Saudi ArabiaOil as energy source

Environmental toll

Work Cited http

://www.theecologist.org/News/news_analysis/269784/desalination_pros_and_cons_of_a_typically_thorny_issue.html

 http://www.resources.ca.gov/ocean/97Agenda/Chap5Desal.html  http://www.theoildrum.com/node/5155  http

://www.nytimes.com/2010/07/11/world/asia/11water.html?pagewanted=all

 http://www.scientificamerican.com/article.cfm?id=why-dont-we-get-our-drinking-water-from-the-ocean

 http://www.pacinst.org/reports/desalination/desalination_report.pdf  http://www.sciencedirect.com/science/article/pii/

S0011916407006005  http://www.sciencedirect.com/science/article/pii/

S0011916405006041