How to Configure Your Facebook Page Moderation Settings
Facebook allows you to set up rules for comment moderation on your Page. This is especially useful when you remember that any Facebook user who has access to your Page can comment on your Page stories.
You can block specific language on your Page in your admin area. To do so, first click Edit Settings under the edit Page menu item in your admin panel.
On the next screen, select profanity levels, and enter any specific words you'd like to block.
Facebook also allows you to moderate posts manually. This option is found under the Posting Abilities section of the Manage Permissions tab of your Page. In the drop-down menu under Post Visibility, choose Hide from Timeline if you want to approve all posts before they appear on your Page Timeline.