What is Brackish Water and How Do You Treat It?
According to the World Health Organization (WHO), 1 in 3 people worldwide don't have access to safe drinking water, and a global population expected to reach 8 billion by 2023 will further exacerbate the problem. Access to safe drinking water is one of the great challenges of modern times. Water comprises 71 percent of earth's surface, but only three percent is fresh water, and only about one percent is suitable for drinking. Evidently, there is no shortage of salt water on our planet, and a solution to the global water crisis may lie in the treatment of slightly salty brackish water. Brackish water has salinity levels between fresh water and seawater and is considerably easier to desalinate than the latter. Below you will learn about brackish water, how it is treated, and how it may provide a solution to the world's growing demand for drinking water.
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What is brackish water?
Brackish water is water with salinity levels between fresh water and seawater. Salinity refers to the concentration of dissolved salts in a body of water, so brackish water is saltier than fresh water, but less salty than seawater. Brackish water has a salt concentration of 1,000 - 10,000 parts per million (PPM). In contrast, fresh water has a salt concentration of less than 1,000 PPM and seawater has a salt concentration of 30,000 - 40,000 PPM. Also, the total dissolved solids (TDS) level of brackish water far exceeds that of drinking water. The Environmental Protection Agency's guideline for drinking water is less than 500 PPM, while brackish water is between 3,000 and 10,000 PPM.
How do you treat brackish water?
Reverse osmosis is the leading desalination technology globally. A reverse osmosis system applies pressure to saline water and forces it through a semipermeable membrane. The membrane's small pores block the passage of dissolved salts and other contaminants but allow water to flow through, converting brackish water into fresh water. One of the largest reverse osmosis desalination plants is in Israel and it can produce about 165 million gallons of fresh water each day.
If you have further questions about brackish water or any other water-related concerns, please don't hesitate to contact us.
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