10 000 kg/hr of a 5% salt in water solution is fed to a desalination unit where the salt is removed from the water to produce fresh water and brine. The desalination water is to contain no more than 500 ppm salt. The brine (salt solution) waste from the process contains 7.25% salt. To optimize the process, some of the brine waste is recycled to the process. After mixing with the fresh feed, the process input contains 6% salt.
6.1 Draw a flow diagram of the process.
6.2 Calculate the flowrates of brine, desalinated water and recycle streams
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