Chrissy,
The Toby Drew books are great to read for this.
You can't fight this disease that's for sure, they have to bottom out.
What struck me is your age. Are you sure you want to live with this? You don't have kids yet.
Sounds like his drinking is pretty severe 4 pints of Vodka a day is a tremendous amount to drink.
Don't get into trying to help him detox, if it doesn't work which it won't because he'll sabatoge it, he'll blame it on you.
Any Alanon in your area?
Ngaire