Hi, 
Thanks for the question. The bokashi composting system is very flexible and, unlike other composting systems, it is fine to add citrus peelings. Citrus peelings are considered harder to compost items but your bokashi compost will be able to handle them, even with large quantities of citrus peelings being added. Just remember to be a bit more generous when adding the bokashi bran when you have added a lot of citrus peelings. 
Happy composting 🙂