Irene's Dirty Rice Casserole

• 1 onion (chopped)
• 1 rib celery (chopped)
• 1/2 bell pepper (chopped)
• 700 gr beef (ground)
• 400 gr pork sausage mild
• 180 gr rice (uncooked)
• 1 package cream of mushroom soup
• 1 package cream of celery soup
• 1 package cream of chicken soup