CN211170118U

CN211170118U - Water-saving hemodialysis water preparation system

Info

Publication number: CN211170118U
Application number: CN201921594534.6U
Authority: CN
Inventors: 祝览铭; 封亚萍; 舒秀丽; 成医峰; 李俊花
Original assignee: Affiliated Hospital Of Hangzhou Normal University (hangzhou Second People's Hospital)
Current assignee: Affiliated Hospital Of Hangzhou Normal University (hangzhou Second People's Hospital)
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-08-04
Anticipated expiration: 2029-09-24

Abstract

The utility model provides a water-saving hemodialysis water preparation system, including positive osmotic engine, reverse osmosis unit and water storage bucket, 70% -90% hemodialysis waste water and 10% -30% municipal tap water after filtering are stored in the water storage bucket, wherein, the positive osmotic engine has linked firmly the positive osmotic engine, the positive osmotic engine separates into dialysis wastewater tank and first drawing cistern with the positive osmotic engine, reverse osmosis membrane has linked firmly in the reverse osmosis unit, reverse osmosis unit separates into second drawing cistern and water purification tank with the reverse osmosis unit, the water storage bucket links to each other with the dialysis wastewater tank through having security filter and first buffer tank, first drawing cistern bottom links to each other with second drawing cistern bottom through second buffer tank, second drawing cistern bottom links to each other with first drawing cistern through second buffer tank, the utility model discloses have through positive osmotic engine and reverse osmosis system, reducing the chemical cleaning frequency, greatly reducing the consumption of tap water and the discharge of dialysis wastewater.

Description

Water-saving hemodialysis water preparation system

Technical Field

The utility model relates to a hemodialysis water preparation field, specifically speaking relates to a water-saving hemodialysis water preparation system.

Background

Hemodialysis is an important therapy for treating acute and chronic renal failure and uremia, and the quality of water for dialysis is crucial to the curative effect and safety of hemodialysis. The dialysis water undergoes a process of gradually progressing from softened water to reverse osmosis produced water, from single-stage reverse osmosis produced water to double-stage reverse osmosis produced water to high-purity water. Municipal tap water is adopted as inlet water in hemodialysis, and impurities such as residual trace elements, bacteria, viruses, salt and the like are removed through a reverse osmosis system after a series of pretreatment, so that high-purity produced water is obtained.

According to the relevant medical data, a patient needs about 120L purified water for each treatment, 500L tap water is needed according to the 25% water production efficiency of a reverse osmosis system, the treatment process is the most water-consuming treatment process in the hospital treatment process, the Chinese research data service platform (CNRDS) statistics shows that the hemodialysis patients in China reach 44.7 ten thousands of people in 2016, and the dialysis water consumption of about 72 m tap water is calculated according to the dialysis frequency of each patient for 3 times per week³V (man year). Estimated by the number of 2016 hemodialysis patients, the total amount of tap water consumed by per year dialysis in China is 3218 ten thousand meters³A year; as a country with moderate water shortage, the water consumption for hemodialysis can be effectively reduced every year, and the method has very important social significance and environmental protection significance.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims to provide a water-saving hemodialysis water preparation system to overcome the defects in the prior art.

In order to realize above-mentioned purpose, the utility model provides a water-saving hemodialysis water preparation system, including positive osmotic apparatus, reverse osmosis unit and water storage bucket, there are 70% ~ 90% hemodialysis waste water and 10% ~ 30% municipal tap water after filtering in the water storage bucket, wherein, positive osmotic apparatus has linked firmly positive osmotic film in, positive osmotic film separates into the dialysis wastewater tank with positive osmotic apparatus and draws the cistern with first, reverse osmosis membrane has linked firmly in the reverse osmosis unit, reverse osmosis membrane separates reverse osmosis unit into the second and draws cistern and water purification tank, the water storage bucket links to each other with the dialysis wastewater tank through having safety filter and first buffer bucket, first draw the cistern bottom and draw the cistern bottom through second buffer bucket and second and link to each other, the second draws the cistern bottom and draws the cistern through second buffer bucket and first and link to each other.

As a further explanation of the present invention, it is preferable that the first drawing liquid tank and the second drawing liquid tank contain 0.1% -10% by mass of an inorganic salt aqueous solution.

As a further explanation of the present invention, preferably, the water storage barrel is provided with an activated carbon barrel, activated carbon is stored in the activated carbon barrel, and the activated carbon barrel is fixedly connected with a tap water pipe.

As a further explanation of the present invention, it is preferable that the dialysis wastewater tank is fixedly connected with a wastewater pipe at the top.

As a further explanation of the present invention, preferably, the bottom of the water purifying tank is fixedly connected with a water outlet pipe.

As to the utility model discloses a further explanation, preferably, water storage barrel head portion one side has linked firmly total flow tube, and total flow tube exit end links to each other with security filter bottom, and security filter top is passed through the inlet tube and is connected with first buffering bucket, and first buffering bucket exit end passes through the feed liquor pipe and links to each other with the dialysis wastewater disposal basin.

As a further explanation of the present invention, preferably, the main flow pipe is fixedly connected with a booster pump, and the liquid inlet pipe is fixedly connected with a first peristaltic pump.

The utility model discloses following beneficial effect has:

1. the utility model, by combining the forward osmosis technology and the reverse osmosis technology, purifies the hemodialysis wastewater and returns the hemodialysis wastewater to the hemodialysis system as water supply, thereby greatly reducing the consumption of municipal tap water and the discharge of the hemodialysis wastewater;

2. the hemodialysis wastewater with high organic pollutant content is treated by using a non-pressure forward osmosis technology, so that the deposition of organic pollutants on the surface of a membrane is avoided, the efficient and stable operation of a recovery system is kept, and the chemical cleaning frequency and the cleaning wastewater discharge amount are reduced;

3. the metabolic products such as urea and the like generated in the hemodialysis process are discharged out of the system along with a very small amount of hemodialysis waste water, so that the gradual accumulation of organic pollutants in the whole system is avoided.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a purification flow chart of the present invention.

Description of reference numerals:

1. a forward osmosis device; 11. a dialysis wastewater tank; 12. a forward osmosis membrane; 13. a first draw solution tank; 14. a liquid inlet pipe; 15. a liquid return pipe; 16. a first peristaltic pump; 17. a second peristaltic pump; 2. a reverse osmosis unit; 21. a second draw solution tank; 22. a reverse osmosis membrane; 23. a water purifying tank; 24. a water outlet pipe; 25. a first circulation pipe; 3. a water storage barrel; 31. a tap water pipe; 32. an activated carbon bucket; 33. a main flow pipe; 34. a booster pump; 4. a cartridge filter; 41. a water inlet pipe; 5. a first buffer bucket; 51. a waste pipe; 6. a second buffer bucket; 61. a liquid outlet pipe; 62. a second circulation pipe; 63. a high pressure pump.

Detailed Description

In order to further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention.

A water-saving hemodialysis water preparation system combines the drawings 1 and 2 and comprises a forward osmosis device 1, a reverse osmosis device 2 and a water storage barrel 3, wherein the water storage barrel 3 is connected with the forward osmosis device 1 through a pipeline, and the forward osmosis device 1 is connected with the reverse osmosis device 2 through a pipeline.

With reference to fig. 1 and 2, an activated carbon barrel 32 is arranged at the top of the water storage barrel 3, activated carbon is stored in the activated carbon barrel 32, a tap water pipe 31 is fixedly connected to the activated carbon barrel 32 and is used for communicating municipal tap water, and the activated carbon barrel 32 adsorbs particulate impurities in the water, so that the function of purifying the tap water can be achieved; a main flow pipe 33 is fixedly connected with one side of the bottom of the water storage barrel 3, a booster pump 34 is fixedly connected with the main flow pipe 33, and the outlet end of the main flow pipe 33 is fixedly connected with a security filter 4; the tap water pipe 31 is arranged to enable hemodialysis waste water and municipal tap water to be stored in the water storage barrel 3, wherein the hemodialysis waste water accounts for 70% -90% of the total amount, the municipal tap water accounts for 10% -30% of the total amount of the waste water, the amount of the municipal tap water depends on the consumption amount of the hemodialysis waste water, and when the hemodialysis waste water is consumed more, the supplement amount of the municipal tap water is increased, so that the total water amount entering the forward osmosis device 1 is always the same.

With reference to fig. 1 and 2, the bottom of the cartridge filter 4 is connected to the main flow pipe 33, the top of the cartridge filter 4 is fixedly connected to a water inlet pipe 41, the outlet end of the water inlet pipe 41 is fixedly connected to a first buffer tank 5, the top of the first buffer tank 5 is connected to the water inlet pipe 41, the bottom of the first buffer tank 5 is fixedly connected to a liquid inlet pipe 14, the liquid inlet pipe 14 is fixedly connected to a first peristaltic pump 16, and the outlet end of the liquid inlet pipe 14 is connected to the forward osmosis device 1; a forward osmosis membrane 12 is fixedly connected to the middle part in the forward osmosis device 1, the forward osmosis membrane 12 is made of a conventional commercial forward osmosis membrane material (such as FO-8040-CTA-CS-FP and the like of HTI (national institute of hydration technology), and the forward osmosis membrane 12 divides the forward osmosis device 1 into a dialysis wastewater tank 11 and a first drawing liquid tank 13; the outlet end of the liquid inlet pipe 14 is connected with the bottom of the dialysis wastewater tank 11, and the top of the dialysis wastewater tank 11 is fixedly connected with a wastewater pipe 51.

With reference to fig. 1 and fig. 2, a liquid outlet pipe 61 is fixedly connected to the top of the first liquid drawing tank 13, the outlet end of the liquid outlet pipe 61 is fixedly connected to the second buffer barrel 6, a liquid return pipe 15 and a second circulating pipe 62 are respectively fixedly connected to two sides of the bottom of the second buffer barrel 6, wherein the liquid return pipe 15 is fixedly connected to the second peristaltic pump 17, the second circulating pipe 62 is fixedly connected to the high-pressure pump, the outlet end of the liquid return pipe 15 is connected to the bottom of the first liquid drawing tank 13, and the outlet end of the second circulating pipe 62 is connected to the reverse osmosis device 2; the reverse osmosis device 2 is fixedly connected with a reverse osmosis membrane 22, and the reverse osmosis membrane 22 is a conventional commercial aromatic polyamide reverse osmosis roll-type membrane component (such as BW30-400FR of Dow, USA); the reverse osmosis membrane 22 divides the reverse osmosis device 2 into a second drawing liquid tank 21 and a purified water tank 23, the bottom of the purified water tank 23 is fixedly connected with a water outlet pipe 24, and the purified water is discharged from the water outlet pipe 24; the top of the second liquid drawing tank 21 is connected with the second buffer barrel 6 through a first circulating pipe 25, and the first liquid drawing tank 11 and the second liquid drawing tank 21 are filled with inorganic salt water solution with the mass fraction of 0.1% -10%.

With reference to fig. 1 and 2, when hemodialysis water needs to be prepared, mixed water in the water storage tank 3 enters the dialysis wastewater tank 11 through the main flow pipe 33 and the liquid inlet pipe 14, then the mixed water contacts the forward osmosis membrane 12, under the action of high osmotic pressure of the high-concentration inorganic salt solution, water molecules in the hemodialysis wastewater penetrate through the forward osmosis membrane 12 and enter the inorganic salt solution in the first drawing liquid tank 13, and harmful substances such as urea and other metabolic products and bacteria in hemodialysis are blocked by the forward osmosis membrane 12 and remain in the dialysis wastewater tank 11, and finally discharged to the external environment along with a very small amount of hemodialysis wastewater from the wastewater pipe 51; water molecules in the inorganic salt solution enter the second liquid drawing tank 21 of the reverse osmosis device 2 through the liquid outlet pipe 61, the second buffer barrel 6 and the second circulating pipe 62, and enter the water purifying tank 23 through the reverse osmosis membrane 22 under the action of the high-pressure pump 63 to obtain high-purity produced water, and the produced water is continuously used as water supply to enter the hemodialysis system, so that the recycling of the hemodialysis wastewater is realized.

With reference to fig. 1 and fig. 2, at the same time, the inorganic salt solution enters the first drawing liquid tank 13 again through the first circulating pipe 25, the second buffer barrel 6 and the liquid return pipe 15 to perform the second circulation purification, so as to realize continuous purification and high purification utilization; the method combines forward osmosis and reverse osmosis technologies, purifies the hemodialysis wastewater and returns the hemodialysis wastewater to a hemodialysis system as water supply, so that the consumption of municipal tap water and the discharge amount of the hemodialysis wastewater are greatly reduced; the non-pressure type forward osmosis technology is used for treating the hemodialysis wastewater with high organic pollutant content, so that the deposition of organic pollutants on the surface of a membrane is avoided, the efficient and stable operation of a recovery system is kept, and the chemical cleaning frequency and the cleaning wastewater discharge amount are reduced.

It should be noted that the above mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be interpreted as limiting the scope of the present invention. Various modifications, equivalent substitutions and improvements will occur to those skilled in the art and are intended to be within the spirit and scope of the present invention. The protection scope of the present invention is subject to the appended claims.

Claims

1. A water-saving type hemodialysis water preparation system is characterized by comprising a forward osmosis device (1), a reverse osmosis device (2) and a water storage barrel (3), wherein 70% -90% of hemodialysis wastewater and 10% -30% of filtered municipal tap water are stored in the water storage barrel (3),

forward osmosis unit (1) internal fixation has forward osmosis membrane (12), forward osmosis membrane (12) are separated into dialysis wastewater tank (11) and first cistern (13) of drawing with forward osmosis unit (1), reverse osmosis unit (2) internal fixation has reverse osmosis membrane (22), reverse osmosis membrane (22) are separated into the second with reverse osmosis unit (2) and are drawn cistern (21) and water purification tank (23), water storage bucket (3) are continuous with dialysis wastewater tank (11) through having cartridge filter (4) and first buffer bucket (5), first cistern (13) bottom of drawing is drawn cistern (21) bottom through second buffer bucket (6) and second and is drawn cistern (21) and link to each other, second cistern (21) bottom is drawn through second buffer bucket (6) and is drawn cistern (13) and link to each other.

2. A water-saving hemodialysis water preparing system according to claim 1, wherein the first drawing liquid tank (13) and the second drawing liquid tank (21) store 0.1-10% by mass of an inorganic salt solution.

3. A water-saving hemodialysis water-preparing system according to claim 2, wherein the water storage tank (3) is provided with an activated carbon tank (32), activated carbon is stored in the activated carbon tank (32), and the activated carbon tank (32) is fixedly connected with a tap water pipe (31).

4. A water-saving hemodialysis water preparing system according to claim 3, wherein a waste pipe (51) is attached to the top of the dialysis waste water tank (11).

5. A water-saving hemodialysis water-preparing system according to claim 4, wherein a water outlet pipe (24) is attached to the bottom of the water purifying tank (23).

6. A water-saving hemodialysis water preparation system according to claim 5, wherein a total flow pipe (33) is fixedly connected to one side of the bottom of the water storage tank (3), the outlet end of the total flow pipe (33) is connected to the bottom of the cartridge filter (4), the top of the cartridge filter (4) is connected to the first buffer tank (5) through a water inlet pipe (41), and the outlet end of the first buffer tank (5) is connected to the dialysis wastewater tank (11) through a liquid inlet pipe (14).

7. A water-saving hemodialysis water preparing system according to claim 6, wherein the main flow pipe (33) is fixedly connected with a booster pump (34), and the liquid inlet pipe (14) is fixedly connected with a first peristaltic pump (16).