What is the difference between water “Desalination” and water “Purification” ?
A. Scientifically, there is no difference. It is a matter of terminology. Generally speaking, when the salinity level is low and a number of other impurities are also present, water needs “purification”. The common salinity limit is 5,000 mg/L. When the salinity is as and removing salt to make the water usable is the primary objective, water needs “desalination”. Q. How much salt is in sea water ? A. This varies slightly from ocean to ocean, but the range is 32,000 mg/L – 45,000 mg/L. For inland seas like the Red Sea, the salinity (salt content) is about 45,000 mg/L. For the contiguous oceans like the Pacific Ocean, Atlantic Ocean, Indian Ocean, the salinity is about 32,500 mg/L. Near the river delta, it could be as low as 25,000 mg/L Q. How much salinity is good for my health ? A. Too much salinity in water is harmful for human health. Salinity up to 500 mg/L is normal, but less the better. Up to 1,000 mg/L salinity is considered the limit for long-term human consumption. Anything ove
