Here is the one of the ways I've tried to do so by taking apart my old models of suspension and truss bridges made out of Popsicle sticks and Elmer's glue.
Step 1: Materials + Tools
-Bucket with water
***Keep in mind that these models were bonded by Elmer's glue which is easy to break the bonds with water. Other adhesives might not be as easily taken apart and throwing away the model might just be your best bet.