Inside the world’s biggest water desalination plants in Saudi Arabia – Saudi Arabia The worldâ s largest producer of desalinated water, Saudi Arabia also makes the most amount of waste from this energy intensive industry; but local researchers are trying to change that. Ahmed al-Amoudi, head of a government-run desalination research institute, sees a future where industrially useful minerals such as sodium chloride salt, magnesium and calcium are extracted from the seawater alongside clean water, and no highly-salty wastewater â known as brine â flows back into the sea. (LINK). Inside the world’s biggest water desalination plants in Saudi Arabia – Saudi ArabiaHIWI042020-10-13T21:11:04+02:00