I have had a similar situation and have not been able to find a setting that would prevent hyphenation across columns or pages. It would be a very helpful feature.
Other than that, you might just need to go through your document and manually dehyphenate the words at the end of your page.
select word / go to "extras" / "dehyphenate text"
You can also use manual tracking in addition, to spread the words out evenly in that last line and in the next line/first of next page, that will be effected by changing the previous line.
select line / go to "text properties" / "advanced settings" / "manual tracking"
hope that helps and if anyone has a better solution, I'd be happy to know!