I really couldn't blame your partner as they likely have been pretty severely traumatized by your drinking of the past, and seeing cans in the trash likely triggers an instant "here we go again"
Trust will take a long time to gain back, and things will be rocky for a while until you've firmly got your sobriety locked down.
In the mean time, I would do the mother of all cleanings and search every inch of the house to make sure you get everything out once and for all.