Electrolyte Management of Dialysate

A dialysate processing system comprising:

• an output connection adapted to transfer dialysate to a dialysis filter, said dialysis filter having a blood/dialysate membrane with a blood side and a dialysate side;
• an input connection adapted to transfer dialysate from said dialysis filter;
• a dialysate filter cartridge comprising:
• a dialysate filter membrane having a dialysate side and a sink/source material side;
• a dialysate filter input connected to said input connection;
• a dialysate filter output connected to said output connection;
• a recirculating pump to recirculate dialysate between said dialysis filter and said dialysate filter during a dialysis treatment;
• an electrolyte loop in fluid connection between said dialysate filter output and said output connection, said electrolyte loop comprising:
• a first electrolyte pump configured to control flow of said dialysate within at least a portion of said electrolyte loop;
• a first acid cartridge in fluid connection within said electrolyte loop and configured to add a first set of electrolytes to said dialysate when said dialysate passes through said first acid cartridge;
• at least one sensor configured to sense at least one electrolyte component in said dialysate while said dialysate recirculates;
• a controller configured at least in part to perform a first method of managing electrolytes in said dialysate while performing a dialysis treatment, said first method comprising:
• receiving a first signal from said at least one sensor and from said first signal, detecting that said dialysate is deficient in at least one electrolyte, said at least one electrolyte being one of said first set of electrolytes;
• and
• causing said electrolyte pump to actuate and thereby causing at least some of said dialysate to pass through said first acid cartridge and thereby add said at least one electrolyte to said dialysate.