Syphax's rewriting (I'm actually assuming you just mean heavy editing, as opposed to completely redoing, so correct me if I'm wrong) method:
1. Typos. There is no story that cannot be improved with the elimination of typos. It doesn't matter what you do later with the chapter. Show them no mercy.
2. Plot and tone stuff. Stuff I forgot to emphasize, things that need explaining, etc. Add them in. Make a new paragraph if it works. Is the setting consistent (if your post apocalypse wasteland has a fantastic nightclub as opposed to a run down watering hole, where by literary law all adventures must start, there'd better be a damn good explanation)
3. Character stuff. Average guy under great duress talking very eloquently? Cut that shit out. Well breed upstate New Yorker inexplicably talking like a Alabaman redneck? Either un-inexplicably it or rewrite the dialogue for what you have in mind. These are extreme examples but I think you get the picture.
4. Wording. Get rid of simple to be verbs (was, is , and so on).
Chuck Palahniuk says this: http://litreactor.com/essays/chuck-palahniuk/nuts-and-bolts-%E2%80%9Cthought%E2%80%9D-verbs Which sums up to get rid of thought verbs (think, wants, etc)
I remember Wildbow saying this: get rid of -ly adjectives where you can.
In general be more descriptive. This isn't just you, just as a general rule. None of these are to be taken as gospel, you need to find what works for the situation your writing is at.
5. Typos. See number 1. You missed some, I don't care who you are or how thorough you are.
Hope this helped.