Fluid purification system

摘要

Certain disclosed embodiments concern systems and methods of preparing dialysate for use in a home dialysis system that is compact and light-weight relative to existing systems and consumes relatively low amounts of energy. The method includes coupling a household water stream to a dialysis system; filtering the water stream; heating the water stream to at least about 138 degrees Celsius in a non-batch process to produce a heated water stream; maintaining the heated water stream at or above at least about 138 degrees Celsius for at least about two seconds; cooling the heated water stream to produce a cooled water stream; ultrafiltering the cooled water stream; and mixing dialysate components into the cooled water stream in a non-batch process.

主权项

1. A fluid purification system having an inlet and an outlet, and defining a fluid flow pathway, comprising:
a pump; a microfluidic pasteurizer downstream of the pump and coupled to the fluid flow pathway, the fluid flow pathway comprising
(a) a first region where fluid flows in a first direction at a first temperature;(b) a heater region downstream of the first region, and including at least one heater that transfers heat into the fluid flowing through the heater region at the first temperature to increase the temperature to a second temperature greater than the first temperature to pasteurize the fluid flowing through the pathway; and(c) a second region downstream of the heater region where fluid flows in a second direction at a temperature greater than the first temperature, wherein fluid flowing in the second region thermally communicates with fluid flowing in the first region such that heat transfers from fluid flowing in the second region to fluid flowing in the first region resulting in a temperature reduction in the fluid as it flows through the second region, wherein fluid flows out of the pathway through the outlet at a temperature less than the second temperature; and a throttling valve downstream of the microfluidic pasteurizer, wherein the pump and the throttling valve operate in a closed loop control setup to maintain the fluid at a desired pressure and flow rate as the fluid passes through the pasteurizer.