The principle requirement in a desalination design is an
-The availability of raw water may place a
limitation on the raw water used in the process.
accurate projection of the chemical makeup of the worst
quality water that will ever be used as a raw feed water
-The maximum amount of waste brine that can
be economically disposed of may limit the raw
at the site being investigated.
documentation must include maximum total dissolved
water used in the process.
solids, the individual ions (see App. B), the maximum
amount of total suspended solids present in the feed
water, and any gas or potential corrosive agent that may
be in the feed water.
Figure 7-1. Principles of electrodialysis desalination