Dear P’Bow,
For this water quality (brine) as feed RO could operate at 50% recovery rate.
And should apply antiscalant 4 ppm of KURIVERTER N-500.
However, it was simulated based on SiO2 from estimate about 40ppm.
A result of Aqoulizer was showed this below.
If it was feed water which though pass softener. It may be unnecessary to treatment by antiscalant.
However, Please repeat check water quality full item of brine RO again naka because it is no enough for analysis ka.