In an embodiment of the present disclosure, a wind turbine blade treatment apparatus comprises a support having a frame with an edge follower configured to be positioned near an edge of a wind turbine blade. The support also includes a side member connected to the frame, configured to extend at least partially along a width of the wind turbine blade and to be positionable near the wind turbine blade. The wind turbine blade treatment apparatus further comprises a sprayer connected to the support, configured to spray fluid onto the wind turbine blade.