Borewell recharge through RO reject water


I am looking to improve the groundwater level of my land. We currently have a borewell that supplies water to an RO Plant. I wanted to know if I can use the borewell recharge technique using my RO reject water. My local expert is saying that if we add a layer of charcoal it will act as a natural softner and the system will work. Can you please help me? We are planning to put gutters on our shed to collect rainwater, but since we do not get too much rain we wanted to recycle our RO waste into the bore recharge. Looking forward to hearing from you.

Dhairya Palsani