Hemodialysis wastewater purifying and recycling system and method

Abstract

The invention discloses a hemodialysis wastewater purification and reuse system and method, and the system comprises a wastewater collection unit which is used for collecting and temporarily storing hemodialysis wastewater; the pretreatment unit is connected with the wastewater collection unit and is used for carrying out primary purification treatment on the wastewater so as to remove part of impurities and microorganisms in the wastewater; the pressure adjusting unit is connected with the pretreatment unit and is used for carrying out pressurization treatment on the wastewater and providing required pressure for subsequent deep purification treatment; the deep purification unit is connected with the pressure regulation unit and is used for removing impurities such as inorganic salts and macromolecular organic matters in the wastewater, so that the wastewater reaches a higher purification degree; the post-treatment unit is connected with the deep purification unit and is used for further treating the wastewater subjected to deep purification so as to remove specific pollutants and enable the wastewater to reach the reuse standard; the reuse temporary storage unit is connected with the post-treatment unit and is used for temporarily storing the purified water which reaches the reuse standard after being treated; the efficient purification and recycling of the hemodialysis wastewater are realized.

Description

Technical Field

[0001] The invention relates to a hemodialysis wastewater treatment system, and in particular to a hemodialysis wastewater purification and reuse system and method. Background Art

[0002] With the rapid arrival of an aging society, the incidence of diabetes and hypertension continues to rise, resulting in a large and continuously increasing number of kidney disease patients. As the main method for treating end-stage renal disease, the demand for renal dialysis is also increasing. In hemodialysis treatment, the demand for pure water is crucial. Usually, the pure water in the dialysis station is prepared by purifying municipal tap water. However, tap water can be affected by external factors, such as pipeline rupture, water source pollution (floods), and water-scarce areas, but dialysis treatment cannot be delayed for a moment. Therefore, designing a miniaturized dialysis wastewater purification and reuse device is an urgent way to solve the above problems.

[0003] At present, the treatment of hemodialysis wastewater mainly adopts the centralized treatment of medical wastewater, and adopts conventional physical filtration and microbial degradation treatment methods, such as using biofilm to degrade organic matter and nitrogen and phosphorus pollutants, and through physical filtration, sedimentation, disinfection, etc., to ensure that the wastewater meets the discharge standards and is discharged.

[0004] However, conventional treatment methods have the following problems and shortcomings: First, high cost. The traditional centralized treatment process requires the addition of various chemicals and has high land costs. Second, technical complexity. Due to the complex composition of the concentrated wastewater, the treatment process is relatively cumbersome and the treatment cycle is relatively long, requiring professional personnel for maintenance and management. Third, the diversity of pollutants. After dialysis wastewater and other medical wastewater are concentrated in sewage pools, there are many types of pollutants in the wastewater, making it difficult to treat. Fourth, the reuse requirement. Since the treated water quality cannot meet the drinking water standards, it can only be directly discharged into pipes and cannot be reused. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an efficient hemodialysis wastewater purification and reuse system and method, which utilizes a multi-stage treatment unit combined with water quality monitoring to achieve efficient purification and reuse of hemodialysis wastewater while ensuring the energy-saving, stable and intelligent operation of the system.

[0006] The technical solution of the present invention to solve the above technical problems is:

[0007] Compared with the prior art, the advantages of the present invention are: the hemodialysis wastewater purification and reuse system adopts a highly integrated layout concept, and each processing unit is compactly arranged, which can be skid-mounted and installed indoors, occupying a very small area. This technical means not only saves valuable medical space, but also improves the flexibility and adaptability of the system, making it easy to adapt to hemodialysis centers of different sizes. Through modular settings, the system is easy to install, debug and maintain, further reducing the use threshold and operating costs of the equipment.

[0008] In addition, the system can efficiently remove inorganic salts, macromolecular organic matter, microorganisms and other impurities in wastewater through multi-stage treatment processes, including pretreatment, deep purification and post-treatment, ensuring that the treated water quality meets strict reuse standards. This process not only achieves efficient purification of wastewater, but also temporarily stores the purified water through the reuse temporary storage unit for subsequent use, significantly improving the utilization efficiency of water resources, reducing dependence on fresh water resources, and has significant environmental and economic benefits.

[0009] In summary, the hemodialysis wastewater purification and reuse system of this technical solution is not only compact in structure and occupies a small area, but also can efficiently purify wastewater and realize resource recycling. At the same time, through energy saving and consumption reduction and automated operation, it significantly reduces operating costs and maintenance difficulties. It has broad application prospects and significant social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0011] Figure 1 This is the overall schematic diagram of the hemodialysis wastewater purification and reuse system. DETAILED DESCRIPTION

[0012] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0013] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it will not be further defined or explained in the subsequent drawings.

[0014] Hemodialysis wastewater purification and reuse system 100, such as Figure 1As shown, the system aims to efficiently purify hemodialysis wastewater and make it meet the reuse standards, thus realizing the recycling of water resources. The system optimizes the structural settings, improves the processing efficiency, reduces energy consumption and operating costs, and realizes automatic operation, which has significant economic and environmental benefits.

[0015] Specifically, the system includes a wastewater collection unit 10, which is responsible for collecting and temporarily storing fresh wastewater from the hemodialysis ward. The unit includes a hemodialysis wastewater temporary storage tank 11, which accurately controls the volume of wastewater through a ball valve and a liquid level switch to ensure that the wastewater is temporarily stored within a safe liquid level range. This technical means not only realizes automated management, but also reduces manual intervention and improves the operating efficiency of the system.

[0016] The pretreatment unit 20 is connected to the wastewater collection unit 10 and is used for performing preliminary purification treatment on the wastewater to remove some impurities and microorganisms in the wastewater.

[0017] The pressure regulating unit 30 is connected to the pretreatment unit 20 and is used to perform pressurized treatment on the wastewater to provide the required pressure for subsequent deep purification treatment.

[0018] The deep purification unit 40 is connected to the pressure regulating unit 30 and is used to remove impurities such as inorganic salts and macromolecular organic matter in the wastewater, so that the wastewater can reach a higher purification level.

[0019] The post-processing unit 50 is connected to the deep purification unit 40 and is used to further process the deeply purified wastewater to remove specific pollutants so that the wastewater meets the reuse standard.

[0020] The reuse temporary storage unit 60 is connected to the post-processing unit 50 and is used to temporarily store the purified water that meets the reuse standard after being processed.

[0021] The system adopts a miniaturized setting, suitable for indoor skid-mounted installation, and occupies a very small area, suitable for places with limited space. Each processing unit adopts a modular design, which is easy to install and maintain, and improves the flexibility and scalability of the system.

[0022] In addition, a multi-stage treatment process is adopted, including pretreatment, deep purification, and post-treatment, to ensure that the treated wastewater meets the reuse standards. Through online water quality monitoring and feedback control, the treatment parameters are adjusted in real time to ensure that the water quality is stable and meets the standards.

[0023] Preferably, the system can realize automatic operation, and the operation of each unit can be centrally monitored and adjusted by the central control unit to reduce manual intervention. Through network connection, remote monitoring and fault diagnosis of the system can be realized, which is convenient for maintenance personnel to deal with abnormal situations in time and ensure stable operation of the system.

[0024] More specifically, the wastewater collection unit 10 is the basic part of the entire hemodialysis wastewater purification and reuse system, and mainly includes a hemodialysis wastewater temporary storage tank 11. The temporary storage tank 11 is used to collect and temporarily store fresh wastewater from the hemodialysis ward to provide a stable water source for subsequent treatment processes. The temporary storage tank 11 accurately controls the capacity of the wastewater through a ball valve and a liquid level switch to ensure that the wastewater is temporarily stored within a safe liquid level range to prevent the wastewater from overflowing or drying up.

[0025] The pretreatment unit 20 is an important part of the hemodialysis wastewater purification and reuse system, and mainly includes an ultraviolet sterilizer 21 and a precision filter 22. The ultraviolet sterilizer 21 uses ultraviolet rays emitted by a high-power ultraviolet lamp to efficiently kill viruses and bacteria in the wastewater, effectively preventing microorganisms in the water from contaminating subsequent pipelines and equipment. The precision filter 22 uses multi-stage precision filtration technology to remove suspended matter and fine particles in the wastewater, preventing these impurities from clogging the subsequent reverse osmosis device, and ensuring the stable operation of the entire system.

[0026] The pressure regulating unit 30 is a key part of the hemodialysis wastewater purification and reuse system, and is mainly composed of a booster pump 31 and a pressure switch 32. The booster pump 31 is used to pressurize the pretreated wastewater and provide the required pressure for the subsequent reverse osmosis device 41 to ensure that the reverse osmosis device can operate efficiently. The pressure switch 32 is connected to the outlet of the booster pump 31 to monitor the pressure in the pipeline in real time, prevent leakage caused by excessive pipeline pressure due to blockage of the reverse osmosis device 41 or other abnormal conditions, and ensure the safe operation of the system.

[0027] The deep purification unit 40 is the core part of the hemodialysis wastewater purification and reuse system, and is mainly composed of a reverse osmosis device 41. The reverse osmosis device 41 can efficiently remove impurities such as inorganic salts and macromolecular organic matter in the wastewater, so that the wastewater reaches a higher degree of purification. A proportional valve 42 is provided at the concentrated water outlet of the reverse osmosis device 41 to adjust the internal pressure and ensure that the reverse osmosis device operates at the optimal pressure, thereby achieving the best treatment effect.

[0028] The post-treatment unit 50 includes an electrolytic cell 51, which further treats the wastewater after reverse osmosis treatment through electrochemical reaction, the main purpose of which is to decompose specific pollutants such as urea in the wastewater to ensure that the wastewater meets the reuse standard. The anode and cathode of the electrolytic cell 51 are respectively connected to gas exhaust pipes, the anode exhaust pipe 01 is used to discharge nitrogen and carbon dioxide gases generated by the anode reaction, and the cathode exhaust pipe 02 is used to discharge hydrogen generated by the cathode reaction.

[0029] In addition, the system includes a comprehensive treatment tank 70, which is an important component of the hemodialysis wastewater purification and reuse system and is connected to the reverse osmosis device 41 through a pipeline. Its main function is to temporarily store the concentrated water produced by the reverse osmosis device 41, and provide a centralized collection and temporary storage place for subsequent concentrated water treatment. The comprehensive treatment tank 70 controls and adjusts the volume in the tank through the ball valve and liquid level switch installed on the connecting pipeline to ensure that the concentrated water is temporarily stored within a safe liquid level range.

[0030] The temporary storage unit 60 is an important component of the hemodialysis wastewater purification and reuse system, and mainly includes a temporary storage tank 61 for clean water reuse. The temporary storage tank 61 is connected to the outlet of the post-processing unit 50 through a pipeline, and is used to temporarily store the clean water that meets the reuse standard after treatment. The main function of this unit is to provide a temporary storage space for the purified water, ensure a stable supply of clean water when needed, and also facilitate further monitoring and management of the clean water.

[0031] In addition, the method for purifying and reusing hemodialysis wastewater in the technical solution comprises the following steps:

[0032] (1) collecting hemodialysis wastewater to the wastewater collection unit 10 for temporary storage;

[0033] (2) transporting the temporarily stored wastewater to the pretreatment unit 20 for preliminary purification to remove some impurities and microorganisms in the wastewater;

[0034] (3) pressurizing the pretreated wastewater to provide the required pressure for subsequent deep purification treatment through the pressure regulating unit 30;

[0035] (4) The pressurized wastewater is transported to the deep purification unit 40 to remove impurities such as inorganic salts and macromolecular organic matter in the wastewater, so that the wastewater reaches a higher degree of purification;

[0036] (5) further treating the deeply purified wastewater to remove specific pollutants in a post-treatment unit 50 so that the wastewater meets the reuse standard;

[0037] (6) The purified water that meets the reuse standard is temporarily stored in the reuse temporary storage unit 60 for subsequent use.

[0038] This method purifies hemodialysis wastewater through a series of orderly treatment steps to meet the reuse standards and realize the recycling of water resources. The entire method includes wastewater collection, pretreatment, pressurized treatment, deep purification, post-treatment and temporary storage for reuse. Each step works synergistically to ensure the efficiency and stability of wastewater treatment.

[0039] Through the above method, the hemodialysis wastewater purification and reuse system can not only efficiently purify the hemodialysis wastewater to meet the reuse standards, but also realize the recycling of water resources and reduce wastewater discharge, which has significant economic and environmental benefits. This system provides a reliable, efficient and economical solution for the treatment of hemodialysis wastewater and has broad application prospects.

[0040] Preferably, the deep purification treatment step also includes a step of monitoring the water quality of the wastewater, and adjusting the operating parameters of the deep purification unit according to the monitoring results.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the invention product is usually placed when in use, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. "First" and "second" are only for the purpose of making the description easier to understand, without any other directional meaning, and cannot be used as a limitation on the present invention.

[0042] The hemodialysis wastewater purification and reuse system and method provided by the present invention are introduced. The principle and implementation mode of the present invention are described by using specific examples in this article. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. Hemodialysis wastewater purification and reuse system, characterized in that: include: A wastewater collection unit, used to collect and temporarily store hemodialysis wastewater; A pretreatment unit, connected to the wastewater collection unit, for performing preliminary purification treatment on the wastewater to remove some impurities and microorganisms in the wastewater; A pressure regulating unit, connected to the pretreatment unit, for pressurizing the wastewater to provide the required pressure for subsequent deep purification treatment; A deep purification unit, connected to the pressure regulating unit, is used to remove impurities such as inorganic salts and macromolecular organic matter in the wastewater, so that the wastewater reaches a higher degree of purification; A post-processing unit, connected to the deep purification unit, is used to further process the deeply purified wastewater to remove specific pollutants so that the wastewater meets the reuse standard; The reuse temporary storage unit is connected to the post-processing unit and is used to temporarily store the purified water that meets the reuse standard after being processed.

2. The hemodialysis wastewater purification and reuse system according to claim 1, characterized in that: The wastewater collection unit comprises a hemodialysis wastewater temporary storage tank, and the wastewater capacity of the temporary storage tank is controlled by a ball valve and a liquid level switch.

3. The hemodialysis wastewater purification and reuse system according to claim 1, characterized in that: The pretreatment unit comprises an ultraviolet sterilizer and a precision filter, wherein the ultraviolet sterilizer is used to kill viruses and bacteria in the wastewater, and the precision filter is used to remove suspended matter in the wastewater.

4. The hemodialysis wastewater purification and reuse system according to claim 1, characterized in that: The pressure regulating unit comprises a booster pump, and the booster pump is also connected to a pressure switch for preventing the reverse osmosis device from being blocked and leaking due to excessive pipeline pressure.

5. The hemodialysis wastewater purification and reuse system according to claim 1, characterized in that: The deep purification unit comprises a reverse osmosis device, and a proportional valve is provided at the concentrated water outlet of the reverse osmosis device for adjusting the internal pressure so that the reverse osmosis device can achieve the best treatment effect.

6. The hemodialysis wastewater purification and reuse system according to claim 1, characterized in that: The post-processing unit comprises an electrolytic cell, wherein the anode and cathode of the electrolytic cell are respectively connected with gas exhaust pipes for timely exhausting the nitrogen and carbon dioxide gases released by the anode and the hydrogen released by the cathode into the atmosphere.

7. The hemodialysis wastewater purification and reuse system according to claim 5, characterized in that: It comprises a comprehensive treatment tank, which is connected with the reverse osmosis device through a pipeline to temporarily store concentrated water produced by the reverse osmosis device.

8. The hemodialysis wastewater purification and reuse system according to claim 1, characterized in that: The temporary storage unit for reuse includes a temporary storage tank for purified water reuse, which is connected to the water outlet of the post-processing unit and is used for temporarily storing purified water that meets the reuse standard after being processed.

9. A method for purifying and reusing hemodialysis wastewater, characterized in that: The following steps are involved: (1) Collecting hemodialysis wastewater to a wastewater collection unit for temporary storage; (2) The temporarily stored wastewater is transported to a pretreatment unit for preliminary purification to remove some impurities and microorganisms in the wastewater; (3) Pressurizing the pretreated wastewater to provide the required pressure for subsequent deep purification treatment through a pressure regulating unit; (4) The pressurized wastewater is transported to a deep purification unit to remove impurities such as inorganic salts and macromolecular organic matter in the wastewater, so that the wastewater reaches a higher degree of purification; (5) Further treatment of the deeply purified wastewater to remove specific pollutants in a post-treatment unit so that the wastewater meets the reuse standards; (6) The purified water that meets the reuse standards is temporarily stored in a reuse temporary storage unit for subsequent use.

10. The method for purifying and reusing hemodialysis wastewater according to claim 1, characterized in that: The deep purification treatment step also includes a step of monitoring the water quality of the wastewater, and adjusting the operating parameters of the deep purification unit according to the monitoring results.

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