It depends on which dialysis the patient is taking.
For patients on hemodialysis, the American Association of Kidney Patients recommends a daily potassium intake of 2,000 to 3,000 milligrams. Patients on hemodialysis only receive treatment a few times per week.
For patients on peritoneal dialysis, 3,000 to 4,000 milligrams of potassium per day is allowed, because in this dialysis the blood is cleaned more frequently.