JP2019136327A - Artificial dialysis water production apparatus for personal dialysis - Google Patents

Abstract

To provide an artificial dialysis water production apparatus for personal dialysis that allows hot water sterilization operation.SOLUTION: An artificial dialysis water production apparatus for personal dialysis has a circulation line having a raw water supply line 10, a line heater 2, a heating raw water line 11, an activated carbon adsorption device 3, a pretreatment water line 12, an RO film device 4, an RO water line 13, an RO water tank 5, an artificial dialysis water line 14 and a circulation line 17. Circulated hot water in the circulation line allows hot water sterilization.SELECTED DRAWING: Figure 1

Description

  The present invention provides an apparatus for producing artificial dialysis water for personal dialysis suitable for one or two persons, which can be used by a patient with chronic renal failure at home and for individual dialysis treatment in a medical facility, and the artificial dialysis for personal dialysis. The present invention relates to a filtration operation method using a dialysis water production apparatus.

2. Description of the Related Art Conventionally, a dialysis water and dialysate manufacturing apparatus is known that combines an electrolyzed water manufacturing apparatus and a reverse osmosis membrane apparatus (RO apparatus) (Patent Document 1).
Since these are devices for treating a large number of patients in a medical facility, they have a high production capacity, and the amount of raw water (tap water) supplied to the electrolyzed water production device is 500L. The amount exceeds / hr. Therefore, in the artificial dialysis water production apparatus of Patent Document 1, an example of producing hydrogen-containing dialysis water using four electrolyzed water production apparatuses is shown.
Moreover, as shown in Patent Document 2, in order to increase the electrolysis efficiency of the conventional electrolyzed water production apparatus, a desired dissolved hydrogen concentration is obtained by adding an ionic component so that the electric conductivity of the supplied water is 100 μS / cm or more. Therefore, the raw water used is limited.

In individual dialysis in a medical facility and dialysis treatment at home, a large device is not necessary, and a small device is desired.
Also, depending on the region, tap water with low conductivity and low conductivity may be used as raw water, so the electrolytic efficiency is high so that dissolved hydrogen concentration can be obtained with sufficient therapeutic effect even with low conductivity raw water. An artificial dialysis water production apparatus for personal dialysis using an electrolyzed water production apparatus is known (Patent Document 3).

Japanese Patent No. 4377104 Japanese Patent No. 4805455 Japanese Patent No. 6017911

  An object of the present invention is to provide an artificial dialysis water production apparatus for personal dialysis capable of circulating sterilization with hot water and a filtration operation method using the artificial dialysis water production apparatus for personal dialysis.

The present invention has a raw water source, a line heater, an activated carbon adsorption device, an RO membrane device, and a tank (RO water tank) for storing treated water (RO water) treated by the RO membrane device. The water tank is equipped with a heating device,
The raw water source and the line heater are connected by a raw water supply line,
The line heater and the activated carbon adsorption device are connected by a heated raw water line,
The activated carbon adsorbing device and the RO membrane device are connected by a pretreatment water line in which a pressure pump for the RO membrane device is arranged,
RO membrane device and RO water tank are connected by RO water line,
The RO water tank and the dialysis water sampling section for personal dialysis are connected by an artificial dialysis water line.
Furthermore, the artificial dialysis water line and the raw water supply line are connected by a circulation line,
The RO water tank, the artificial dialysis water line, the circulation line, the raw water supply line, the line heater, the heated raw water line, the activated carbon adsorption device, the pretreatment water line, the RO membrane device, and the RO water An artificial dialysis water production apparatus for personal dialysis and a filtration operation method using the artificial dialysis water production apparatus for personal dialysis capable of forming a hot water sterilization circulation line comprising a line and the RO water tank.

  The artificial dialysis water production apparatus for personal dialysis of the present invention can be operated with hot water sterilization, and therefore can produce artificial dialysis water while maintaining the inside of the apparatus in a state where no viable bacteria exist.

Schematic (process flow diagram) of an artificial dialysis water production apparatus for personal dialysis of the present invention.

<Water production equipment for artificial dialysis for personal dialysis>
This will be described with reference to FIG.
The raw water source 1 is a supply source of tap water or groundwater serving as raw water.
The raw water source 1 can be a raw water tank that stores raw water, but if the raw water is tap water, a tap faucet can be used as the raw water source 1. When the raw water source 1 is ground water or when a raw water tank is used, a raw water supply pump can be arranged.

The line heater 2 is for heating the raw water to a human body temperature. Since the apparatus of the present invention is for producing artificial dialysis water, it is preferable that the artificial dialysis water is about the body temperature of a person.
The raw water source 1 and the line heater 2 are connected by a raw water supply line 10.

The activated carbon adsorbing device 3 is for adsorbing and holding impurities in the raw water, and particularly for adsorbing and holding chlorine ions when the raw water is tap water.
The line heater 2 and the activated carbon adsorption device 3 are connected by a heating raw water line 11.

As the RO membrane device (reverse osmosis membrane device) 4, a device in which an RO membrane that does not deteriorate due to hot water sterilization is incorporated can be used.
The activated carbon adsorption device 3 and the RO membrane device 4 are connected by a pretreatment water line 12 in which a pressurizing pump 30 for the RO membrane device 4 is arranged.

A tank (RO water tank) 5 for storing treated water (RO water) treated by the RO membrane device 4 has a thick line and is provided with a heating device.
A well-known line heater, IH heater, etc. can be used for a heating apparatus.
The capacity of the RO water tank 5 is preferably 5 to 8L.
The RO membrane device 4 and the RO water tank 5 are connected by an RO water line 13, and a drain line 19 for draining water in the RO water tank 5 is connected to the RO water tank 5.
The concentrated water outlet of the RO membrane device 4 is connected to the raw water supply line 10 via the concentrated water return line 16a in which the concentrated water line 15 and the on-off valve 21 are arranged.
The concentrated water outlet of the RO membrane device 4 is connected via a concentrated water line 15 to a concentrated water drain line 16b in which an on-off valve 26 is arranged.

Between the RO water tank 5 and an artificial dialysis water collection unit 6 for personal dialysis (a personal dialysis apparatus including a dialysate production apparatus) 6 is connected by an artificial dialysis water line 14. The artificial dialysis water line 14 may be provided with a circulation pump 31 as shown in the figure.
In each line, on-off valves (electromagnetic valves) 20 to 26 (24 is an air vent valve) are arranged, and in addition to those shown in the drawing, on-off valves can be arranged.
In addition, measuring devices such as a flow meter, a pressure gauge, and a thermometer can be arranged on each line as necessary.

Further, the artificial dialysis water line 14 and the raw water supply line 10 are connected by a circulation line 17.
RO water tank 5, artificial dialysis water line 14, circulation line 17, raw water supply line 10, line heater 2, heated raw water line 11, activated carbon adsorber 3, pretreatment water line 12, RO membrane device 4, RO water line The continuous line consisting of 13 and the RO water tank 5 is used as a closed circulation line for first hot water sterilization by opening and closing the on-off valve.
The RO membrane device 4, the concentrated water line 15, the concentrated water return line 16 a, the raw water supply line 10, the line heater 2, the heated raw water line 11, the activated carbon adsorption device 3, the pretreatment water line 12, and the RO membrane device 4. This line is used as a closed circulation line for second hot water sterilization by opening and closing the on-off valve.

<Operation method of water production equipment for artificial dialysis for personal dialysis>
Raw water is supplied from the raw water supply source (water tap) 1 to the line heater 2 through the raw water supply line 10, and the raw water is heated in the line heater 2.
The temperature of the raw water after warming may be about the human body temperature, but it can be warmed to around 40 ° C. in consideration of the temperature drop during the subsequent treatment.

  The raw water heated in the line heater 2 is sent to the activated carbon adsorbing device 3 through the heated raw water line 11, and the activated carbon adsorbing device 3 adsorbs and removes chlorine ions and the like in the raw water (tap water).

  The pretreated water from which chlorine ions and the like have been adsorbed and removed by the activated carbon adsorbing device 3 is sent to the RO membrane device 4 through the pretreated water line 12 while being pressurized by the pressure pump 30 to obtain RO water.

  RO water (water for artificial dialysis) obtained by the RO membrane device 4 passes through the RO water line 13, the RO water tank 5 and the water line for artificial dialysis 14 in a sampling part (personal dialysis device including a dialysate production device) 6. Collect and use.

  Concentrated water generated by membrane separation of the RO membrane device 4 opens the on-off valve 26 and drains from the concentrated water line 15 and the concentrated water drain line 16b.

Artificial dialysis water is manufactured by such a filtration operation method and used as artificial dialysis water for personal dialysis, but artificial dialysis by personal dialysis is less frequently used than multi-person dialysis, and the RO membrane device is stopped. May become longer and may cause bacterial contamination from the outside.
Therefore, in the filtration operation using the artificial dialysis water production apparatus of the present invention, after continuing the filtration operation for supplying the artificial dialysis water for a certain period of time, while not supplying the artificial dialysis water, hot water is used using the circulation line. Can be sterilized.

When the filtration operation for producing artificial dialysis water is stopped, the inside of the filtrate water tank 5 is maintained almost full.
Thereafter, the on-off valve 20, on-off valve 21, on-off valve 22, on-off valve 25, and on-off valve 26 are closed, and the on-off valve 23 and on-off valve (air vent valve) 24 are opened.
In this state, the heating device provided in the RO water tank 5 is operated and the circulation pump 31 is operated while heating the RO water, and the RO water tank 5, the artificial dialysis water line 14, the circulation line 17, and the raw water supply line. 10. Line heater 2, heated raw water line 11, activated carbon adsorption device 3, pretreatment water line 12, RO membrane device 4, RO water line 13, circulation line returning to RO water tank 5 (circulation line for first hot water sterilization ) Circulate the heated RO water.
When performing the sterilization operation using the first hot water sterilization circulation line, the RO membrane device 4 is operated.
It is preferable that the RO water in the RO water tank 5 is gradually heated while being heated, and is finally circulated for about 30 to 100 minutes while being heated to a water temperature of 65 to 85 ° C.
After completion of the hot water sterilization, the hot water in the filtrate tank 5 is drained from the drain line 19 by opening the on-off valve 25.
Moreover, it is preferable to cool the 1st hot water sterilization circulation line by flowing raw | natural water after completion | finish of hot water sterilization. The cooling water is drained from the drain line 19 by opening the on-off valve 25.

In parallel with the hot water sterilization operation using the first hot water sterilization circulation line, it is preferable to implement the hot water sterilization operation using the second hot water sterilization circulation line.
The on-off valve 20, on-off valve 22, on-off valve 25, and on-off valve 26 are closed, and the on-off valve 21, on-off valve 23, and on-off valve (air vent valve) 24 are opened.
In this state, the heating device provided in the RO water tank 5 is operated to heat the RO water and the circulation pump 31 and the pressure pump 30 are operated, so that the RO membrane device 4, the concentrated water line 15, and the concentrated water return line are operated. 16a, the raw water supply line 10, the line heater 2, the heated raw water line 11, the activated carbon adsorption device 3, the pretreatment water line 12, and the RO membrane device 4 are heated in a circulation line (second hot water sterilization circulation line). Circulate RO water.
After completion of the hot water sterilization, raw water is supplied instead of the heated RO water, and the on-off valve 26 is opened to cool the second hot water sterilization circulation line while draining the concentrated water from the concentrated water drain line 16b. The filtered water is stored in the filtered water tank 5.

Thereafter, the production of RO water (water for artificial dialysis) is resumed. Until the water for artificial dialysis is collected, the RO water tank 5 is filled with RO water (water for artificial dialysis), and the above-described circulation line is used. Circulation operation can be continued. When the circulation operation using the RO water is performed, the circulating water is drained from the drain line 19 before the RO water is sampled.
Further, the RO water produced in a certain time after the resumption of the production operation of RO water (water for artificial dialysis) can be drained from the drainage line 19.

Example 1
Using the artificial dialysis water production apparatus for personal dialysis shown in FIG. 1, normal operation and hot water sterilization operation were performed.

As the raw water supply source, tap water of 0.1 to 0.2 MPa was used. Using the pressure reducing valve, it supplied to the raw water supply line 10 at 0.05 MPa, and supplied to the RO membrane device 4 through the line heater 2 and the activated carbon adsorption device 3. The line heater 2 was heated to about 40 ° C.
The RO membrane device 4 uses a heat-resistant RO membrane having an outer diameter of 2 inches (manufactured by Daisen Membrane Systems Co., Ltd.) as the RO membrane, and operates the pressurizing pump 30 to a pressure of 1.0 MPa. RO water was produced at a flow rate of 700 ml / min. The RO concentrated water was discharged from the drain line 16b.
The RO water was supplied from the lower part to the RO water tank 5 (capacity 6 L) from the RO water line 13, and sent to the artificial dialysis water collection part 6 through the artificial dialysis water line 14. Excess RO water (200 ml / min if the required amount is 500 ml / min) was returned to the raw water side through the on-off valve 23 and treated again.

(Hot water sterilization)
Circulation operation of the artificial dialysis water production device for personal dialysis (first hot water sterilization circulation line and second hot water sterilization device) while heating the RO water by operating the heating device (line heater) of the RO water tank 5 Both circulation operations of the circulation line were performed. After the line temperature reached 80 ° C, the operation was continued for 30 minutes while maintaining 80 ° C.
Thereafter, while supplying the raw water anew, the temperature of both the first hot water sterilization circulation line and the second hot water sterilization circulation line is gradually lowered while discharging the RO concentrated water from the drain line 16b. The hot water sterilization was finished when the temperature of both lines reached about room temperature.

  The artificial dialysis water production apparatus for personal dialysis of the present invention can be used for individual dialysis treatment in a medical facility or dialysis treatment at home.

DESCRIPTION OF SYMBOLS 1 Raw water supply source 2 Line heater 3 Activated carbon adsorption device 4 RO membrane (reverse osmosis membrane) device 5 RO water tank 6 Artificial dialysis water collection part (personal dialysis device including dialysate production device)
10 Raw Water Supply Line 11 Warming Raw Water Line 12 Pretreatment Water Line 13 RO Water Line 14 Artificial Dialysis Water Line 15 Concentrated Water Return Line 17 Circulation Line 18 Air Vent Line 19 Drain Line

Claims (6)

A raw water source, a line heater, an activated carbon adsorption device, an RO membrane device, and a tank (RO water tank) for storing treated water (RO water) treated by the RO membrane device are provided, and the RO water tank is heated. Equipped with a device,
The raw water source and the line heater are connected by a raw water supply line,
The line heater and the activated carbon adsorption device are connected by a heated raw water line,
The activated carbon adsorbing device and the RO membrane device are connected by a pretreatment water line in which a pressure pump for the RO membrane device is arranged,
RO membrane device and RO water tank are connected by RO water line,
The RO water tank and the dialysis water sampling section for personal dialysis are connected by an artificial dialysis water line.
Furthermore, the artificial dialysis water line and the raw water supply line are connected by a circulation line,
The RO water tank, the artificial dialysis water line, the circulation line, the raw water supply line, the line heater, the heated raw water line, the activated carbon adsorption device, the pretreatment water line, the RO membrane device, and the RO water A water production apparatus for artificial dialysis for personal dialysis in which a circulation line for first hot water sterilization composed of a line and the RO water tank is formed. A concentrated water line is connected to the concentrated water outlet of the RO membrane device, the concentrated water line is branched into a concentrated water return line and a concentrated water drainage line, and the concentrated water return line is connected to the raw water supply line. ,
The RO membrane device, the concentrated water line, the concentrated water return line, the raw water supply line, the line heater, the heated raw water line, the activated carbon adsorption device, the pretreatment water line, and the RO membrane device. The water production apparatus for artificial dialysis for personal dialysis according to claim 1, wherein a circulation line for hot water sterilization is formed.   The apparatus for producing artificial dialysis water for personal dialysis according to claim 1 or 2, wherein the RO water tank provided with the heating device is capable of turning the internal RO water into hot water of 60 ° C or higher by the heating device.   The water production apparatus for artificial dialysis for personal dialysis according to any one of claims 1 to 3, wherein the raw water source is a water tap. A filtration operation method for an artificial dialysis water production apparatus for personal dialysis according to claim 1,
When the hot water sterilization operation is performed using the first hot water sterilization circulation line when the filtration operation is stopped,
While operating the RO water tank heating device to heat the RO water, circulate hot water through the first hot water sterilization circulation line and sterilize with hot water, then circulate raw water through the first hot water sterilization circulation line Cooling and cooling operation method. A filtration operation method for an artificial dialysis water production apparatus for personal dialysis according to claim 2,
When the hot water sterilization operation is performed using the first hot water sterilization circulation line and the first hot water sterilization circulation line when the filtration operation is stopped,
Activating hot water of the RO water tank to heat the RO water, circulating hot water through the first hot water sterilization circulation line and sterilizing with hot water;
Having a step of circulating hot water through the second hot water sterilization circulation line to sterilize with hot water,
A filtration operation method in which raw water is circulated and cooled in the first hot water sterilization circulation line and the second hot water sterilization circulation line after completion of the hot water sterilization.

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