Hades is the word the LXX uses to translate the Hebrew word "Sheol," which is sometimes clearly in the OT a place of the dead that one can be delivered from, and at other times a place of everlasting punishment in the classic sense of hell.
The term has multiple meanings in Scripture.
Thus, I believe it is not accurate to say that the idea of hades in the sense of a "place of the dead" is not in the Bible.
The word "hades" actually does appear in my Bible as well. I suppose the difference is over whether it is a place from whence someone could be rescued. Do you equate hades with purgatory?