I'm sure there will be enough opposition from the comfortably off who want to resist any change as well as leftie nutters who oppose everything to do with "big business". Regardless of the obvious benefits to the local jobs market.
The fact that this is high-grade fertilizer which will help to "Feed the World" will be the divisive issue, especially to those who have come out against the scheme before finding out any facts.
Environmentally I can't see too much problem except during the construction phase. It's on already private land in an area which is not the true moorland that the park was created to protect. Monster cranes are a part of our lives these days, but I can see construction traffic being a pain.