Removal of SMBS (Sodium Methabisulfite) in wastewater

Good Morning, I have some problems to remove SMBS in wastewater generated by the shrimp industries. Does anybody have a wastewater treatment to suggest me ? I have tried with Coagulation and floculation, but there was not a satisfied result. I would although ask you if you have any information about the quantity of SMBS generated in the whole world. Thanks in advance for any answer. Wish you a good day !