Desalination is a process that removes salt and other minerals from seawater to produce fresh water. This process is done to address water scarcity in areas where freshwater resources are limited. Desalination provides an alternative source of drinking water for coastal regions and islands, and is crucial for supporting populations and industries in arid regions with limited access to natural freshwater sources.
There are about 250 desalination plants currently operating in the USA and about 15,000 world wide. Most in the US are operating in Florida but dozens can be found in Texas and California.
No they don't, Africans drink straight from the Nile river, which contains hundreds of wildlife species, including alligators, frogs, fungus and fish. They cannot afford a desalination plant, and desalinations plants clean salt out of the salt water.
It is Bad for the Enviroment, Animals can Die, It could send a State or country broke, It Destroys Coast and it is Amazingly expensive
Many methods for water purification and seawater desalinization have been used for a number of years starting in ancient times with good old fashion distillation (boil the water and catch the condensate leaving the bad stuff behind). The leading method now is membrane based...reverse osmosis. Expensive to build, expensive to operate and maintain.
Reverse Osmosis uses pressure to force water molecules through a special membrane with very small pores that trap salts and other dissolved solids (retentate) and results in up to 99% pure water (solute). In low pressure home use, RO usually results in 80% or more waste...5 gallons of waste water are produced for every gallon of useable water. In high pressure systems (1000 psi or more) used in saltwater desalinization, recovery rates can exceed 90%. High pressure systems require alot of energy to run however.
New studies are underway to improve membrane efficiencies (particularly in energy use) include forward osmosis which actually uses an ionic salt process and then removing the special salts from the solute..or good water side..of the membrane process.
Carbon nano-tubes built into membranes and electrically charged to repel salt ions before reaching the membrane, and biomimetic membranes utlizing aquaporins in a similar charged fashion hold some promise to improving the efficiency of RO systems but are still in the theory and development stage.
One new process that is actually in commercial development is Capacitive De-ionization which uses a flow-through capacitor designed to eliminate dissolved solids from water using a small electrical charge.
Well my fellow friend, Let's start with the process of ground water. Water is caught in the wild an filtered, so that any bacterium can be removed. If all goes well, the water is stored in an air tight container until frozen. A chemical is added so that the water can be worked with. The water is put through a meat grounding machine, where it looks like ground beef, except it's water. I work in the lab, and my buddies and I sometimes sneak a few bites. (shh!) The taste portion is absolutely phenomenal. It tastes just like tap water!!
Advantages· Distillation offers significant savings in operational and maintenance costs compared with other desalination technologies.
· In most cases, distillation does not require the addition of chemicals or water softening agents to pretreat feedwater.
· Low temperature distillation plants are energy-efficient and cost-effective to operate.
· Many plants are fully automated and require a limited number of personnel to operate.
· Distillation has minimal environmental impacts, although brine disposal must be considered in the plant design.
· The technology produces high-quality water, in some cases having less than 10 mg/1 of total dissolved solids.
· Distillation can be combined with other processes, such as using heat energy from an electric-power generation plant.
Disadvantages· Some distillation processes are energy-intensive, particularly the large-capacity plants. «Disposal of the brine is a problem in many regions.
· The distillation process, particularly MSF distillation, is very costly.
· Distillation requires a high level of technical knowledge to design and operate.
· The technology requires the use of chemical products, such as acids, that need special handling.
It's the process of taking away the salt out of the water.
Desalination usually produces fresh water and more concentrated brine, so the only real product is fresh water.
Multi-stage Flash (MSF) Desalination
I have seen plastic bottles of water in MANY sizes from 100ml to 4,000 ml.