Dear Mohsan, If turbidity ...
Published by Bruno Peeters, managing director at Model Engineering
Dear Mohsan,
If turbidity is high in your RO feed then replacing the UF by a media filter will just make it worse because such filters will barely remove colloids and corresponding turbidity.
After UF at least the turbidity (NTU) should be very low. If not, then it seems that your UF membranes are damaged and need to be replaced. I would recommend to contact Dow.