UDF to remove # in idoc to ws interface

Hi Team

We are getting 2 fields from CRM system  something like this :

Dsitrict..> SA JOS#

Street...> RUA DR JOS# MAR

Now C4C people wants us to remove #

I have realised TRIM function will not work here (because the special character is not parsed correctly. Also it has been found in some cases the spl character is seen within a string) and I need to suppress #

Can anyone help me to solve it by some other way?

Thanks