Recovery by distillation is probably a viable option. This is legal, as it is recovery, rather than treatment. The biggest problem will be the condensing coil. Acetone is very volatile at room temp. Commercial stills are available.
Safety is an issue.
Do some homework on it. If you pick up water, distillation will not remove it. This is why grain alcohol for consumption never exceeds 180 to 190 proof. You will not get pure alcohol if there is significant water contamination. What Charles says is true.