How to dialyze large amounts of precipitated enzyme solution (ammonium sulfate)?
Ammonium Sulfate (AS) precipitation is used to concentrate protein. After AS precipitation, you would centrifuge the sample to pellet the protein and then resuspend it in a small volume of water or buffer. You can then dialyze this small volume.

There are other methods of concentrating large volumes of protein, including chromatography and ultrafiltration.