Desalination is any process that removes excess salts and other minerals from the water. In most desalination processes, the feedwater is treated and two streams of water are produced:
Fresh water treated with low concentrations of salts and minerals
Concentrate or brine, which has higher concentrations of salts and minerals than feed water
The feed water for desalination processes can be seawater or brackish water. Brackish water contains more salt than fresh water and less than salt water. It is commonly found in estuaries, which are the lower courses of rivers where they meet the sea, and aquifers, which are deposits of groundwater.
Several factors influence the selection of water sources to feed desalination plants: plant location in relation to available water sources, destination of delivery of treated water, quality of spring water, available pre-treatment options and the ecological impacts of the concentrate discharge.
Sea water
The sea water is taken to a desalination plant from the surface of the water or from the sea floor. In the past, large capacity seawater desalination plants used surface inlets in the open sea.
While surface water abstraction can affect and be affected by organisms in the ocean, problems related to this method can be minimized or resolved by the design, operation and maintenance of appropriate abstraction technologies. Technologies include passive screens, fine mesh screens, filter net barriers and behavioral systems. They are designed to prevent or minimize environmental impact on the surrounding inlet area and minimize the amount of pre-treatment required before feedwater reaches the primary treatment systems.
Subsurface shots are sometimes viable if the geology of the catchment site permits. When water is captured below the surface, the process causes less damage to marine life. However, if the geology of the site is unfavorable, a subsurface inflow can harm nearby freshwater aquifers. Subsurface capture methods include vertical beach wells, radial wells and infiltration galleries.
A major advantage of using a subsurface inlet is that the water is naturally filtered as it passes through the soil profile to the inlet. This filtration improves the quality of the feedwater by decreasing the need for pre-treatment.
Brackish water
Brackish water is commonly used as a source for desalination facilities. It is usually extracted from local estuaries or inland brackish water wells. As it typically has less salt and a lower concentration of suspended solids than seawater, brackish water needs less pre-treatment, which lowers overall production costs. However, a downside is that disposing of brine from an inland desalination site increases cost and can raise environmental concerns.
Like, subscribe to the channel, activate the bell and share the video on your social networks.
Do you have any questions, suggestions or criticisms? Leave it in the comments.
Official website: bit.ly/engdetalhada
Instagram: bit.ly/engedetalhada
Facebook: bit.ly/fbengdet
LinkedIn: bit.ly/ldengdetalhada
#salt #desallinear #water
drinking water salt water can you drink what are the advantages of taking the salt out of the water when taking the salt out of the water
14 июл 2024
