Pour the juice into a blender; add the turmeric and whiz until the turmeric has broken down and the juice is a bright marigold color. Add the water and sugar and blend for a couple of short pulses to help incorporate the sugar.Add about two-thirds of the blueberries to a pitcher. Use the bottom of a wooden spoon to gently muddle the blueberries. Pour the lemonade from the blender into the pitcher, and stir to make sure the sugar is fully incorporated.Distribute the remaining blueberries evenly among the glasses you’ll use for serving. Pour in the lemonade and enjoy.