How does a christian wife deal with a husband with anger problems? He has renounced God since marriage.?

There is no such thing as having your problem solved biblically and permanently. Any approach that you take will not be permanent. All you can do is communicate with him and give him ultimatums. Letting him know that you will have to divorce him if he doesn't change. If you don't believe in divorce, then tough luck because nothing biblically will work on him permanently. Sorry, but it's true and in a few years or less you will be back in the same boat.