Domestic violation

I married on 24 June 2012. Am wrking into IT. Immediately after I came know he is jobless no bank balance nor a single paise. apart from this he was suffering from cold allergy he was very serious. Somehow I managed house and my MaRriage expense. He was having bike loan maarriage loan every thing I only paid for 1 year inspite of this he and his p parents never respect nor any ha ppiness. Am life was pathetic just eat work sleep no talk between us. He utilize d my money without any responsibility. He and his mother always complain abt me with false statement. Am staying separately from last 1 year with my 4 year son. one day he hit me like animals and was bleeding. Am that night neighbors called police as well but i didn't complain them as I have a son and don't want to spoil his future by this. He is like psycho.. so I didn't argue and went to my parents.. after he never called me .. nor even bother about son school and his future.. he always created misunderstanding about me in front of his parents and they lie to him abt me for even a single thing. ispite of this I told him to clear misunderstanding and take m e long with u. But I he dont. Then decided to leave separately.. he very selfish. Least bothered abt and son.. how to get r id of him complete ly. I don't have access trust on him he and hi s parents are very dangerous.. pls guide me how can get rid of him with out affect my son future. Am a Muslim.