From what I gather, (if you also have Extra Utilities installed) then you could either:
a) craft a sludge boiler and change it into items.
b) Leave it in the machine.
c) *USING EXTRA UTILITIES* Craft a Liquid Trash Can and use either pipes from Either EnderIO/MFR/Buildcraft/etc. to get rid of it permanently and instantly. I personally prefer the Ender fluid conduits from EnderIO (Instantaneous transport of liquids) to pump items, energy and fluids. They are cheap to make aswell.
Hope it helps.
a) craft a sludge boiler and change it into items.
b) Leave it in the machine.
c) *USING EXTRA UTILITIES* Craft a Liquid Trash Can and use either pipes from Either EnderIO/MFR/Buildcraft/etc. to get rid of it permanently and instantly. I personally prefer the Ender fluid conduits from EnderIO (Instantaneous transport of liquids) to pump items, energy and fluids. They are cheap to make aswell.
Hope it helps.