RO reject water recover

we have DM plant and for that we used TWO stage RO for Dm feed that second stage RO reject water is around 180 kl/day  and that water we want to recover and reject water analysis as below

 

PH                  =8.11

TDS                =5922

TDS. EVPO.  =9200

TH                  =1928

CAH               =924

MGH              =1004

ALKP             =110

ALKM            =1240

CL                  =3556

SO4               =4626

FE                  =52.8

SIO2              =137

PO4               =12

please any body suggest us how to recover this water and reduce this quantity.