Since both the water ...
Published by Anand Kumar Pandey, Environmental Design Engineer - P.H.E. at Dass Rasayanic Services
Since both the water qualities are similar enough, thus in my view a system comprising of Pre-Treatment --> RO is needed and if the TDS of reject goes upto 20000 ppm use EDR and thus take the water from EDR back to RO. It will give u maximum efficiency with minimal power consumptions.