CN112591950A

CN112591950A - Hospital water monitoring system based on Internet of things

Info

Publication number: CN112591950A
Application number: CN202011617951.5A
Authority: CN
Inventors: 李�杰; 莫娇; 陈广荣; 芦小山; 周妃芳
Original assignee: Foshan Yajieyuan Technology Co ltd
Current assignee: Foshan Yajieyuan Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-02

Abstract

The invention discloses a hospital water monitoring system based on the Internet of things, which comprises a central quality-grading host water making system, a water using terminal, a tail end purifying and monitoring system and a control system, wherein the tail end purifying and monitoring system is arranged between the central quality-grading host water making system and the water using terminal; according to the invention, the control system comprising the monitoring module, the calculating module, the dispatching module, the alarming module and the maintenance module is connected with the central quality-divided host water production system, the tail end purification and monitoring system and the tail end water quality monitor, so that a user can check the water quality condition and the filter element use condition of the whole water supply system, and when the system fails, alarm information can be automatically sent to the user and the dispatching is automatically carried out to maintenance personnel, thereby effectively ensuring the normal operation of the water supply system.

Description

Hospital water monitoring system based on Internet of things

Technical Field

The invention relates to the technical field of hospital water supply, in particular to a hospital water monitoring system based on the Internet of things.

Background

Hospitals serve as public service institutions with large energy consumption and pollutant discharge amount, water conservation, energy conservation and emission reduction are realized, and the implementation of green development becomes a consensus of all hospital builders and participants.

The water systems of direct drinking water, acidic oxidation potential water, hemodialysis water, domestic sewage treatment, industrial wastewater treatment, rainwater recycling, hot water and the like in the existing hospital are respectively designed, produced and delivered independently by different professional companies, so that the water systems in the hospital cannot be integrated, and the waste of manpower and material resources can be caused in various links such as relevant communication, design and supplier selection of the water systems, the propulsion of the whole water supply system is influenced, and the construction and management cost of the water supply system is increased.

At present water supply system, the institute managers can't learn current quality of water condition and the in service behavior of filter core, consequently can't make prejudgement and emergency measure.

When water pipeline received external source pollution (blow out, stop water suck-back etc.), the turbidity of running water can the grow, if directly let in filtration system with the too big running water of turbidity and filter, then filtration system's filter core is blockked up very fast, can't effectively filter, needs the renew cartridge to increase running cost.

In addition, if water is cut off in municipal administration or water pipes inside the hospital are exposed, water in each department of the hospital is easily cut off at the same time, the operation of the hospital is seriously affected, particularly in some important departments, and the life risk of a patient is caused if water is cut off.

Secondly, if a centralized water supply system is adopted, because a certain distance exists between each level of pure water tank and each level of water using terminal, the pipeline may be polluted due to various reasons (aeration pipe, water stopping and back suction, etc.), thereby affecting the final effluent quality of each level of water using terminal.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the hospital water monitoring system based on the Internet of things, so that a user can check the water quality condition and the filter element use condition of the whole water supply system, and when the system fails, alarm information can be automatically sent to the user and a list can be automatically sent to maintenance personnel, thereby effectively ensuring the normal operation of the water supply system.

The technical problem to be solved by the invention is to provide a hospital water monitoring system based on the internet of things, which comprises a central quality-grading host water making system, a water using terminal, a tail end purifying and monitoring system and a control system, wherein the tail end purifying and monitoring system is arranged between the central quality-grading host water making system and the water using terminal;

the control system is respectively connected with the central quality-grading host water production system and the tail end purification and monitoring system, and comprises a monitoring module, a calculation module, a dispatching module, an alarm module and a maintenance module;

the monitoring module is used for acquiring and displaying water quality data of a central quality-divided host water production system and water quality data of a water using terminal;

the calculation module calculates the service conditions of all filter elements in the central quality-grading main machine water production system according to the water quality data of the central quality-grading main machine water production system and the water quality data of the water using terminal;

the alarm module alarms according to the water quality data of the water production system of the central quality-grading host, the water quality data of the water using terminal and the service condition of each filter element;

the dispatching module informs maintenance personnel to maintain according to the alarm signal;

and the maintenance evaluation module evaluates according to the maintenance information of the maintainers.

As an improvement of the scheme, the central quality-based main water production system at least comprises a primary water supply system, a secondary water supply system and a tertiary water supply system; the terminal purification and monitoring system at least comprises a primary terminal purification and monitoring system, a secondary terminal purification and monitoring system and a tertiary terminal purification and monitoring system; according to different water quality requirements, the water terminals are at least divided into a first-level water terminal, a second-level water terminal and a third-level water terminal; the primary tail end purification and monitoring system is arranged between the primary water supply system and the primary water using terminal; the secondary tail end purification and monitoring system is arranged between the secondary water supply system and the secondary water using terminal; and the three-stage tail end purification and monitoring system is arranged between the three-stage water supply system and the three-stage water using terminal.

As an improvement of the scheme, after the treatment by the primary water production system and the primary tail end purification and monitoring system, the effluent of the primary water use terminal has TDS less than or equal to 50mg/L and conductivity less than or equal to 15 mu s/cm; after being treated by a primary water production system, a secondary water production system and a secondary tail end purification and monitoring system, the effluent of a secondary water using terminal has the conductivity less than or equal to 5 mu s/cm; after being treated by the first-stage water production system, the second-stage water production system, the third-stage water production system and the third-stage tail end purification and monitoring system, the effluent of the third-stage water using terminal has the conductivity less than or equal to 0.1 mu s/cm.

As an improvement of the scheme, the primary water production system comprises a raw water tank, an emergency water-saving device, a filtering device and a primary pure water tank, wherein the raw water tank and the filtering device are connected through at least two pipelines which are connected in parallel and are respectively a main pipeline and an auxiliary pipeline, and the emergency water-saving device is connected to the auxiliary pipeline; the secondary water production system comprises a secondary reverse osmosis device and a secondary pure water tank; the three-level water production system comprises an EDI system and a three-level pure water tank;

the first-stage pure water tank is connected with the first-stage water terminal and the second-stage reverse osmosis device respectively, the second-stage pure water tank is connected with the second-stage water terminal and the EDI system respectively, and the third-stage pure water tank is connected with the third-stage water terminal.

As an improvement of the scheme, a turbidity sensor and a stacked filter are arranged in the emergency water-saving device; the main pipeline is provided with a first electromagnetic valve, the auxiliary pipeline is provided with a second electromagnetic valve, and the second electromagnetic valve is arranged in front of the emergency water-saving device;

when the turbidity of tap water in the raw water tank is more than 5NTU, closing the first battery valve, opening the second battery valve, enabling water in the raw water tank to enter the emergency water-saving device through the auxiliary pipeline for pre-filtering, and enabling the water pre-filtered by the emergency water-saving device to enter the filtering device;

and when the turbidity of the tap water in the raw water tank is less than 5NTU for 30min, the first battery valve is opened again, the second battery valve is closed, and the tap water in the raw water tank enters a normal filtering mode.

As an improvement of the scheme, the water using terminals are at least divided into a class I water using terminal, a class II water using terminal and a class III water using terminal according to different water using priority levels and purposes; wherein, the hemodialysis water terminal, the ICU water terminal and the operating room water terminal are the I-grade water terminal; the liquid preparation water terminal, the inspection water terminal and the acid and alkali water terminal are the II-level water terminals; the direct drinking water terminal, the cleaning water terminal and the flushing water terminal are the grade III water terminals;

the direct drinking water terminal, the hemodialysis water terminal, the acid and alkali water terminal, the flushing water terminal, the ICU water terminal and the operating room water terminal are connected with the primary pure water tank, wherein the pH value of the effluent of the water terminal connected with the primary pure water tank is 5.0-8.5, the TDS is less than or equal to 50mg/L, the conductivity is less than or equal to 15 mu s/cm, and the effluent meets the effluent standard of the primary water terminal;

the cleaning water terminal and the liquid preparation water terminal are connected with the secondary pure water tank, wherein the effluent of the water terminal connected with the secondary pure water tank has a pH value of 5.0-8.5 and an electric conductivity of less than or equal to 5 mu s/cm, and meets the effluent standard of the secondary water terminal;

the inspection water terminal is connected with the three-stage pure water tank, wherein the water outlet of the water terminal connected with the three-stage pure water tank has the conductivity less than or equal to 0.1 mu s/cm and meets the water outlet standard of the three-stage water terminal.

As an improvement of the scheme, a first-stage circulating pump is arranged on the pipeline of the first-stage pure water tank and the pipeline of the I-stage water terminal, a second-stage circulating pump is arranged on the pipeline of the second-stage pure water tank and the pipeline of the II-stage water terminal, and a third-stage circulating pump is arranged on the pipeline of the third-stage pure water tank and the pipeline of the III-stage water terminal.

When the water supply amount of the original water tank is insufficient, all water using terminals except the first-stage water using terminal are closed, a first-stage circulating pump, a second-stage circulating pump and a third-stage circulating pump are started, and pure water in pipelines among the first-stage pure water tank, the second-stage water using terminal and the third-stage water using terminal flows back to the first-stage pure water tank; returning the pure water in the pipeline between the second-stage pure water tank and the second-stage water terminal and the third-stage water terminal to the second-stage pure water tank; returning pure water in pipelines between the three-stage pure water tank and the II-stage water terminal and the III-stage water terminal to the three-stage pure water tank; and the pure water of the second-level pure water tank and the pure water of the third-level pure water tank flow back to the first-level pure water tank.

As an improvement of the scheme, the primary tail end purifying and monitoring system and the secondary tail end purifying and monitoring system respectively comprise a microporous filter, an overflowing ultraviolet sterilizer, an overflowing ozone generator and a tail end water quality monitor which are sequentially arranged; the three-stage tail end purification and monitoring system comprises a microporous filter, an overflowing ultraviolet sterilizer, an overflowing ozone generator, a two-way mixed bed and a tail end water quality monitor which are sequentially arranged.

As the improvement of the proposal, the microporous filter is internally provided with a filter element for filtering out particles with the particle size of more than 0.22 μm in the pure water;

the two-way mixed bed is internally provided with a polishing cation resin filter material for filtering particles with the particle size larger than 0.1 mu m in the pure water;

the wave length of the overflowing type ultraviolet sterilizer is 240-280 nm, and the illumination intensity is 150-250 MJ/cm²。

As an improvement of the scheme, the residual chlorine removal device comprises a residual chlorine sensor, an overflowing ultraviolet lamp and an activated carbon filter, wherein the residual chlorine sensor is arranged behind the raw water tank and behind the softener;

the overflowing type ultraviolet lamp is provided with two wavelength ranges, wherein one wavelength range is 170-200 nm and is used for oxidizing residual chlorine; the other wavelength range is 240-280 nm and is used for killing bacteria;

an immersed ultraviolet sterilizer and a pressure sensor are arranged in the first-stage pure water tank, the second-stage pure water tank and the third-stage pure water tank; the wavelength of the immersed ultraviolet sterilizer is 240-280 nm, and the illumination intensity is 150～250MJ/cm²；

Wherein, a flow sensor, a pressure sensor, a PH sensor and a conductivity sensor are arranged in front of the raw water tank; a turbidity sensor and a residual chlorine sensor are arranged behind the raw water tank, and a pressure sensor, a turbidity sensor and a residual chlorine sensor are arranged behind the filtering device;

a flow sensor, a pH sensor, a conductivity sensor and a TDS sensor are arranged behind the first-stage reverse osmosis device; a flow sensor, a pH sensor and a conductivity sensor are arranged behind the secondary reverse osmosis device; and a flow sensor and a resistivity sensor are arranged behind the third-stage reverse osmosis device.

The implementation of the invention has the following beneficial effects:

according to the hospital water monitoring system based on the Internet of things, the control system comprising the monitoring module, the calculating module, the dispatching module, the alarming module and the maintenance module is connected with the central quality-divided host water production system, the tail end purification and monitoring system and the tail end water quality monitor, so that a user can easily obtain and master the current situation of water quality of supplied water, can check the current situation in real time, can prevent the situation from happening in the future, can guarantee the safety of water quality, and can realize the transparency and safety of water quality; when the system fails, the system automatically sends alarm information to a user and automatically sends a list to maintenance personnel, so that the normal operation of the system is effectively ensured; the user can evaluate according to the maintenance information of the maintenance personnel.

The system of the invention adopts the methods of central water production and three-level quality-based water supply, effectively meets the water demand of different departments of the hospital, and compared with a single department water supply system, the central quality-based main water production system of the invention has high utilization efficiency and can save 40-50% of water; the energy consumption is low, and 40% of electricity can be reduced; the replacement frequency of consumables is lower, the replacement quantity is less, and consumables can be reduced by 40-50%; the water supply system has the advantages that the space is effectively saved, each filter element of the central quality-divided main water production system and the pure water tanks at all levels are stored in the same equipment room, and the pure water tanks at all levels and the water terminals at all levels realize water supply connection through pipelines.

The water using terminals are divided into a primary water using terminal, a secondary water using terminal and a tertiary water using terminal, wherein after being processed by a primary water supply system and a primary terminal purifying and monitoring system, the effluent of the primary water using terminal has TDS less than or equal to 500mg/L and conductivity less than or equal to 15 mu s/cm; after being treated by a primary water supply system, a secondary water supply system and a secondary tail end purification and monitoring system, the effluent of a secondary water using terminal has the conductivity less than or equal to 5 mu s/cm; after being treated by the primary water supply system, the secondary water supply system, the tertiary water supply system and the tertiary tail end purification and monitoring system, the effluent of the tertiary water using terminal has the conductivity less than or equal to 0.1 mu s/cm.

The central type split water supply system carries out concentrated advanced treatment on tap water to ensure that the tap water reaches the water quality standard which can be directly used by each department, and then is respectively supplied to each department by using a pipe network.

According to different use levels and purposes, the water using terminals are at least divided into a level I water using terminal, a level II water using terminal and a level III water using terminal, and if tap water is cut off and the water supply amount of an original water tank is insufficient, the priority water supplying system preferentially ensures the water use of the level I water using terminal so as to ensure the emergency operation of a hospital.

The device conveying pipeline part adopts a circulating reflux pipe network design, a water supply pipeline is discharged from the pure water tank, and the water supply pipeline returns to the pure water tank, so that the device is periodically and circularly sterilized, and the problems of bacterial regeneration and secondary pollution of microorganisms are solved.

Drawings

FIG. 1 is a schematic diagram of a hospital water monitoring system based on the Internet of things according to the present invention;

FIG. 2 is a schematic view of a primary end decontamination and monitoring system of the present invention;

FIG. 3 is a schematic view of a two-stage end decontamination and monitoring system of the present invention;

FIG. 4 is a schematic diagram of a three stage end decontamination and monitoring system of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the hospital water monitoring system based on the internet of things provided by the invention comprises a central quality-grading main machine water production system 1, a water using terminal 2, a tail end purification and monitoring system 3 and a control system 4, wherein the tail end purification and monitoring system 3 is arranged between the central quality-grading main machine water production system 1 and the water using terminal 2, and the control system 4 is respectively connected with the central quality-grading main machine water production system 1 and the tail end purification and monitoring system 3.

Specifically, the central quality-based main water production system 1 at least comprises a primary water production system 11, a secondary water production system 12 and a tertiary water production system 13; the primary water production system 11 comprises a raw water tank 111, a filtering device 112, a primary pure water tank 113 and an emergency water saving device 114, wherein the raw water tank 111 and the filtering device 112 are connected in parallel through at least two pipelines, namely a main pipeline 115 and an auxiliary pipeline 116, and the emergency water saving device 114 is connected to the auxiliary pipeline 116; the secondary water production system 12 comprises a secondary reverse osmosis device 121 and a secondary pure water tank 122; the three-stage water production system 13 comprises an EDI system 131 and a three-stage pure water tank 132.

A turbidity sensor and a stacked filter are arranged in the emergency water-saving device 114, and fillers such as filter cotton, ceramic particles, quartz sand and the like are arranged in the stacked filter; the main pipeline 115 is provided with a first electromagnetic valve 1151, the auxiliary pipeline 116 is provided with a second electromagnetic valve 1161, and the second electromagnetic valve 1161 is arranged in front of the emergency water-saving device 114; the filtering device 112 comprises a quartz sand filter 1121, a residual chlorine removing device 1122, a cartridge filter 1123, a softener 1124 and a primary reverse osmosis device 1125 which are connected in sequence.

The raw water tank 111 is used for storing municipal tap water, wherein a flow sensor, a pressure sensor, a pH sensor and a conductivity sensor are arranged in front of the raw water tank 111; a turbidity sensor and a residual chlorine sensor are arranged behind the raw water tank 111. When the turbidity sensor arranged behind the raw water tank 111 detects that the turbidity of the tap water in the raw water tank 111 is greater than 5NTU, that is, the pipeline is polluted by external sources (pipe explosion, water cut-off and suck-back and the like), if the tap water with the turbidity greater than 5NTU is directly introduced into the filter device 112, the quartz sand filter 1121 in the filter device 112 is quickly blocked, effective filtration cannot be performed, and the filter element needs to be replaced. And the primary filtering system 11 needs to be shut down for replacing the filter element, which has certain influence on the secondary filtering system 12 and the tertiary filtering system 13 and is time-consuming and labor-consuming. In order to ensure the service life of the filter element of the filtering device 112, the emergency water-saving device has lower cost and less influence to solve the problem of exogenous pollution.

Specifically, when the turbidity of tap water in the raw water tank 111 is greater than 5NTU, the first electromagnetic valve 1151 is closed, the second electromagnetic valve 1161 is opened, so that water in the raw water tank 111 enters the emergency water-saving device 114 through the auxiliary pipeline 115 for pre-filtering, and water pre-filtered by the emergency water-saving device 114 enters the filtering device 112; and (3) the turbidity of the tap water in the raw water tank 111 lasts for 30min and is less than 5NTU, the first electromagnetic valve 1151 is opened again, the second electromagnetic valve 1161 is closed, and the tap water in the raw water tank 111 enters a normal filtering mode.

A pressure sensor, a turbidity sensor and a residual chlorine sensor are arranged behind the filtering device 112 to monitor the water pressure, the turbidity and the residual chlorine of the water filtered by the filtering device 112. Wherein, a flow sensor, a pH sensor, a conductivity sensor and a TDS sensor are arranged behind the first-stage reverse osmosis device 1125 and are used for detecting the flow, the pH value, the conductivity and the TDS of the pure water entering the first-stage pure water tank; a flow sensor, a pH sensor and a conductivity sensor are arranged behind the secondary reverse osmosis device 121 and are used for detecting the flow, the pH value, the conductivity and the TDS of the pure water entering the secondary pure water tank; and a flow sensor and a resistivity sensor are arranged behind the third-stage reverse osmosis device 131 and used for detecting the flow and the resistivity of pure water entering the third-stage pure water tank.

Preferably, two sets of filtering devices 112 are provided, and the two sets of filtering devices 112 are connected in parallel; a user can start one or two sets of filtering devices 112 according to the water quality condition; or when the filter element needs to be replaced, the set of filtering devices 112 can be suspended, and the other set of filtering devices 112 can be switched to be used, so as to ensure the continuous water supply.

The quartz sand filter 1121 is internally provided with a plurality of layers of quartz sand fillers, and the particle size of the quartz sand fillers is gradually increased from top to bottom. Preferably, the particle size of the quartz sand filler is 12-16 meshes.

When water flows through the upper layer of quartz sand filler, part of solid suspended substances in the water enter the tiny eyelets formed by the upper layer of quartz sand filler and are intercepted by the surface layer of the filter material under the actions of adsorption and mechanical retention. Meanwhile, the intercepted suspended matters are overlapped and bridged, and the suspended matters in the water are continuously filtered as if a film is formed on the surface of the filter layer, so that the film filtration of the surface layer of the filter material is realized. This filtration is not only present on the surface of the filter layer, but also when water enters the intermediate filter layer, it is also referred to as osmotic filtration. In addition, because the filter materials are closely arranged, when suspended particles in water flow through the bent pore passages in the filter material layer, more opportunities and time are provided for the suspended particles to collide and contact with the surface of the filter materials, and fine particle impurities in the water are intercepted, so that the water is further clarified and purified.

After the quartz sand filter 1121 is used for a period of time, a pressure difference is generated between the upper layer quartz sand filler and the lower layer quartz sand filler, and when the pressure difference generated between the upper layer quartz sand filler and the lower layer quartz sand filler is larger than 0.05-0.1 Mpa, the quartz sand filler needs to be back-flushed by reverse water flow, so that trapped substances in the quartz sand filler are stripped and taken away by the water flow, and the filtering function is recovered.

Preferably, the quartz sand filter 1121 is controlled by an electric valve, the backwashing period is set to 24 hours, the time of each backwashing is 5-10 min, and the work position is set as follows: operation, backwashing and forward washing, the conversion of work positions is automatically recorded by a time controller and the flow direction of inlet and outlet water is controlled, and a water pump is started to carry out large-water-volume washing, thereby realizing automatic control. The quartz sand filler filled in the quartz sand filter 1121 is worn and reduced after being used for a long time, so that the quartz sand filler is replaced or added once in 2-3 years.

Chlorine is the most widely used disinfectant at present, is used as an effective sterilization and disinfection means, is low in price, good in effect and convenient to operate, and is used by more than 80% of water plants in the world at present. Therefore, a certain amount of residual chlorine must be maintained in municipal tap water to ensure the microbiological indicator of the drinking water is safe. When chlorine reacts with organic acids, many carcinogenic by-products are produced, such as chloroform and the like. Chlorine has good effect of killing bacterial cells, and also has serious influence on other organism cells and human body cells. More than a certain amount of chlorine can cause a lot of harm to human body and has an unpleasant odor, commonly called bleaching powder odor.

The reverse osmosis membranes in the first-stage reverse osmosis device 1125 and the second-stage reverse osmosis device are most easily destroyed by chlorine, and the residual chlorine removal device 1122 is arranged before the first-stage reverse osmosis device 1125 to reduce the content of residual chlorine in water, so that the service life of the first-stage reverse osmosis device 1125 can be prolonged, the replacement speed of the reverse osmosis membranes is prolonged, and the later maintenance cost is reduced.

The residual chlorine removing device 1122 comprises a residual chlorine sensor, an overflowing ultraviolet lamp and an activated carbon filter, wherein the residual chlorine sensor is arranged behind the raw water tank 111 and behind the softener 1124 and is used for detecting the content of residual chlorine in water.

The activated carbon filter is internally provided with an activated carbon filter material, the particle size of the activated carbon filter material is 8-16 meshes, the uniformity coefficient is 1.4-2.0, organic pollutants, microorganisms, dissolved oxygen and the like in water are adsorbed on the surface of the activated carbon by utilizing the adsorption characteristic of the activated carbon, the probability of degrading the organic pollutants by the microorganisms is increased, the retention time of the organic matters is prolonged, the biodegradation effect is enhanced, the organic matters adsorbed on the surface of the activated carbon are removed, the peculiar smell, the chromaticity, the heavy metal removal, the synthetic detergent, dechlorination and the like in the water can also be removed, in addition, the selective adsorption of the activated carbon not only can adsorb electrolyte ions, but also can well control and reduce the oxygen Consumption (COD) of potassium permanganate.

The active carbon filter is arranged in front of the reverse osmosis device, so that residual chlorine in water can be removed, organic pollution in water can be removed, and the reverse osmosis membrane is further protected.

Wherein, the active carbon adsorbs residual chlorine, and the adsorption performance is mainly determined by adsorption capacity and adsorption rate. According to the invention, the overflowing type ultraviolet lamp is arranged in front of the activated carbon filter to reduce the content of residual chlorine in water, so that the service life of the activated carbon filter can be prolonged, the replacement speed of the filter element is prolonged, and the later maintenance cost is reduced.

Specifically, the overflowing type ultraviolet lamp is arranged between the quartz sand filter 1121 and the activated carbon filter, and the overflowing type ultraviolet lamp is provided with two wavelength ranges, wherein one wavelength range is 170-200 nm and is used for oxidizing residual chlorine; the other wavelength range is 240-280 nm, and the antibacterial agent is used for killing bacteria.

The overflowing type ultraviolet lamp is arranged in the water pipe, and ultraviolet rays emitted by the overflowing type ultraviolet lamp are used for oxidizing residual chlorine in water, so that the content of the residual chlorine in the water entering the activated carbon filter is 0.05-0.1 mg/L, and the damage of the residual chlorine to the activated carbon filter and the primary reverse osmosis device 1125 can be reduced.

The illumination intensity of the overflowing type ultraviolet lamp is controlled to be 70-90 MJ/cm²So that the residual chlorine content of the water entering the activated carbon filter is 0.05-0.1 mg/L; wherein, if the illumination intensity of the over-flow ultraviolet lamp is less than 70MJ/cm²Residual chlorine in the water cannot be effectively oxidized, namely, the content of the residual chlorine in the water entering the activated carbon filter is more than 0.1mg/L, so that the loss of the activated carbon filler and the reverse osmosis membrane is caused, and the filtering effect and the service life of the filtering device are influenced; if the illumination intensity of the over-flow type ultraviolet lamp is more than 90MJ/cm²And the residual chlorine in the water is excessively oxidized, namely the residual chlorine content of the water entering the activated carbon filter is less than 0.05mg/L, so that the residual chlorine content in the water is too low to maintain the effective sterilization effect.

The cartridge filter 1123 is used for filtering out particles with a particle size larger than 5 μm in water to prevent the reverse osmosis high-pressure pump from delivering the particles to the first-stage reverse osmosis device 1125, so as to prevent the reverse osmosis membrane from being punctured, blocked or damaged, and ensure the water passing amount and the effluent quality of the reverse osmosis device.

To increase the recovery of the primary reverse osmosis unit 1125 and prevent carbonate, sulfate and other forms of chemical scaling from occurring on the concentrate side of the primary reverse osmosis unit 1125 (especially the last membrane element in the reverse osmosis pressure vessel), thereby affecting the performance of the membrane elements, the feed water before reverse osmosis treatment must be softened.

The softener 1124 uses a strong acid cation resin to displace calcium and magnesium ions in raw water, and the water flowing out through the apparatus is softened water with extremely low hardness. After adsorbing certain amount of calcium and magnesium ions, the resin must be regenerated, saturated saline water is used to soak the resin to replace the hardness of calcium and magnesium ions in the resin, the softening exchange capacity of the resin is recovered, and the waste liquid is discharged.

The first-stage reverse osmosis device 1125 is composed of reverse osmosis membranes, the pore diameter of the reverse osmosis membranes is less than 1nm, and H is performed under a certain pressure₂The O molecule can pass through the reverse osmosis membrane, but inorganic salts, heavy metal ions, organic substances, colloids, bacteria, viruses, and the like in the raw water cannot permeate the reverse osmosis membrane, thereby strictly distinguishing the permeable pure water from the impermeable concentrated water (concentrated water).

The primary reverse osmosis device 1125 is the core treatment part of the filtering device 112 of the present invention, in order to meet the effluent standard, the present invention pre-treats the water according to the desalination capability of the primary reverse osmosis device 1125, and the pre-treated water is subjected to the high desalination capability of the primary reverse osmosis device 1125 to completely remove the TOC and SiO which are difficult to be removed in the previous pure water manufacturing process₂And micro-particles, bacteria and the like, and the water after reverse osmosis treatment can remove more than 99% of soluble solids, more than 99% of organic matters and colloids and almost 100% of bacterial viruses.

Wherein, whether the first-level reverse osmosis device 1125 is designed reasonably or not is directly related to the economic benefits of the operation of the hospital intelligent central dual water supply system, the service life, the operation reliability and the simplicity.

The reverse osmosis membrane adopts an aromatic poly-cool-limb composite membrane produced by American ceramic type DOW company, the desalination rate of a single reverse osmosis membrane is more than 99.0 percent, and the reverse osmosis device is provided with a conductivity meter which is used for tracking and monitoring the quality of raw water and the quality of outlet water.

The second-stage reverse osmosis device 121 has the same structure as the first-stage reverse osmosis device 1125, and is used for further removing inorganic salts, heavy metal ions, organic matters, colloids, bacteria, viruses and the like in water.

The EDI system 131 is removed by exchanging the residual salts in the reverse osmosis membrane pure water with hydrogen ions or hydroxide ions and sending them to the concentrate stream. Wherein the anion exchange resin uses hydroxyl ions (OH) under the action of DC electric field^-) To exchange anions in the dissolved salt (e.g. chloride Cl)^-) (ii) a Hydrogen ion (H) for cation exchange resin⁺) To exchange cations (e.g. Na) in dissolved salts⁺) (ii) a Under the action of an electric potential, ions exchanged onto the resin migrate along the surface of the resin particles and pass through the membrane into the concentrate chamber, the negatively charged ions (e.g., Cl) being attracted by the anode^-，OH^-) Passes through the anion selective membrane into the adjacent concentrate stream and is blocked by the cation selective membrane, thereby remaining in the concentrate stream, and the cathode attracts cations (such as Na) in the concentrate stream⁺，H⁺) The water enters the adjacent concentrated water flow through the cation selective membrane and is blocked by the anion selective membrane, so that the water is remained in the concentrated water flow; as the water flows through the two parallel chambers, ions are removed in the pure water chamber and accumulate in the adjacent concentrate stream, which is then carried away from the membrane block by the concentrate stream.

In the EDI system 131, in the local area with high potential difference, the water decomposed by electrochemical reaction generates a large amount of H⁺And OH^-The resin and the film can be continuously regenerated without adding chemicals, and the water utilization rate is more than or equal to 90 percent.

Specifically, the water terminals 2 are divided into at least a first-stage water terminal 21, a second-stage water terminal 22 and a third-stage water terminal 23 according to the water quality requirement, wherein the first-stage water terminal 21 is connected to the first-stage pure water tank 113, the second-stage water terminal 22 is connected to the second-stage pure water tank 122, and the third-stage water terminal 23 is connected to the third-stage pure water tank 132.

Wherein, the first-stage water using terminal 21 connected with the first-stage pure water tank 113 comprises a direct drinking water using terminal 211, a hemodialysis water using terminal 212, an acid and alkali water using terminal 213, a flushing water using terminal 214, an ICU water using terminal 215 and an operating room water using terminal 216; the secondary water terminal 22 connected with the secondary pure water tank 122 comprises a cleaning water terminal 221 and a liquid preparation water terminal 222; the tertiary water use terminal 23 connected to the tertiary pure water tank 132 includes a check water use terminal 231.

Wherein, the department provided with the hemodialysis water terminal 212 comprises a hemodialysis center; the department provided with the ICU water using terminal 215 comprises an ICU and an NICU; the department provided with the operating room water terminal 216 includes an operating room; the department provided with a water terminal 222 for liquid preparation comprises a pharmacy department, a static preparation center and a treatment liquid preparation; the departments provided with the inspection water terminal 231 include a pathology department, a laboratory department and a laboratory; the department with the acid-base water terminal 213 comprises a disinfection supply center, an endoscopy department, an oral department and an otorhinolaryngology department; the department provided with the cleaning water terminal 221 comprises a disinfection supply center, an endoscope center, an operation center and an otorhinolaryngology department; the department provided with the flushing water terminal 214 includes a clinical laboratory.

Specifically, according to CJ 94-2005 drinking purified water quality standard, WS 310.1-2016 hospital disinfection supply center part 1 management standard, YY 0572 + 2015 hemodialysis and related treatment water, GB 5749 + 2006 sanitary standard for drinking water, wherein the pH value of the effluent of the primary water terminal 21 is 5.0-8.5, TDS is less than or equal to 50mg/L, and the conductivity is less than or equal to 15 mu s/cm; according to WS 310.2-2016 technical specification for cleaning, disinfecting and sterilizing at part 2 of hospital disinfection supply center and WS 507-2016 technical specification for cleaning and disinfecting of soft endoscope, wherein the pH value of the effluent of the secondary water terminal 22 is 5.0-8.5, and the conductivity is less than or equal to 5 mu s/cm; according to GB/T6682-.

According to different water priority levels and purposes, the water using terminal 2 is at least divided into a grade I water using terminal, a grade II water using terminal and a grade III water using terminal, wherein the hemodialysis water using terminal 212, the ICU water using terminal 215 and the operating room water using terminal 216 are the grade I water using terminals; a liquid preparation water terminal 222, a detection water terminal 231 and an acid-base water terminal 213 are the II-level water terminals; the direct drinking water terminal 211, the washing water terminal 221 and the rinsing water terminal 214 are the class III water terminals.

Wherein, the first-stage pure water tank 113, the second-stage pure water tank 122 and the third-stage pure water tank 132 are connected with the I-stage water terminal, the II-stage water terminal and the III-stage water terminal; namely, the first-stage pure water tank 113 is respectively connected with corresponding water using terminals included in a first-stage water using terminal, a second-stage water using terminal and a third-stage water using terminal; similarly, the second-stage pure water tank 122 is respectively connected with corresponding water terminals included in the first-stage water terminal, the second-stage water terminal and the third-stage water terminal; similarly, the three-stage pure water tank 132 is connected to corresponding water terminals included in the class I, class ii, and class iii water terminals, respectively.

Specifically, a direct drinking water terminal 211, a hemodialysis water terminal 212, an acid and alkali water terminal 213, a flushing water terminal 214, an ICU water terminal 215 and an operating room water terminal 216 are connected with the primary pure water tank 113, wherein the effluent of the water terminal connected with the primary pure water tank 113 has a pH value of 5.0-8.5, a TDS (total dissolved solids) of not more than 50mg/L and an electrical conductivity of not more than 15 mus/cm, and meets the effluent standard of the primary water terminal 21;

the cleaning water terminal 221 and the liquid preparation water terminal 222 are connected with the secondary pure water tank 122, wherein the effluent of the water terminal connected with the secondary pure water tank 122 has a pH value of 5.0-8.5 and an electric conductivity of less than or equal to 5 mu s/cm, and meets the effluent standard of the secondary water terminal 22; the inspection water terminal 231 is connected with the three-level pure water tank, wherein the conductivity of the water outlet of the water terminal connected with the three-level pure water tank is less than or equal to 0.1 mu s/cm and meets the water outlet standard of the three-level water terminal.

Wherein, the first-stage pure water tank 113, the second-stage pure water tank 122 and the third-stage pure water tank 132 are provided with a first-stage circulating pump 24 on the pipeline connected with the first-stage water terminal, a second-stage circulating pump 25 on the pipeline connected with the second-stage water terminal, and a third-stage circulating pump 26 on the pipeline connected with the third-stage water terminal. Namely, the first-stage circulating pump 24 is respectively arranged on the pipelines of the first-stage pure water tank 113, the hemodialysis water terminal 212, the ICU water terminal 215 and the operating room water terminal 216; a second-stage circulating pump 25 is respectively arranged on a pipeline for connecting the first-stage pure water tank 113 with the acid-base water terminal 213, a pipeline for connecting the second-stage pure water tank 122 with the liquid preparation water terminal 222, and a pipeline for connecting the third-stage pure water tank 132 with the inspection water terminal 231; three-stage circulating pumps 26 are arranged on pipelines connected with the direct drinking water terminal 211 and the flushing water terminal 214 of the first-stage pure water tank 113 and the cleaning water terminal 221 of the second-stage pure water tank 122.

If the tap water is cut off and the water supply amount of the original water tank is insufficient, the priority water supply system preferentially ensures the terminal water use of the I-level water; specifically, all water using terminals except the first-level water using terminal are closed, the first-level circulating pump 24 is started, and pure water in pipelines among the first-level pure water tank 113, the second-level water using terminal and the third-level water using terminal flows back to the first-level pure water tank 113, so that the water using of the first-level water using terminals (a hemodialysis water terminal 212, an ICU water using terminal 215 and an operating room water using terminal 216) is ensured, meanwhile, the pure water is prevented from being stored in the pipelines for a long time, and the problems of bacterial regeneration and secondary pollution of microorganisms are avoided; meanwhile, the second-stage circulating pump 25 is started to return the pure water in the pipeline between the second-stage pure water tank 122 and the second-stage water terminal and the third-stage water terminal to the second-stage pure water tank 122, so that the water for the first-stage water terminal is ensured, meanwhile, the pure water is prevented from being stored in the pipeline for a long time, and the problems of bacterial regeneration and secondary pollution of microorganisms are avoided; meanwhile, the three-stage circulation pump 26 is started to return the pure water in the pipeline between the three-stage pure water tank 132 and the II-stage water terminal and the III-stage water terminal to the three-stage pure water tank 132, so as to ensure the water consumption of the I-stage water terminal 21, and simultaneously avoid the situation that the pure water is stored in the pipeline for a long time, and avoid the problems of bacteria regeneration and secondary pollution of microorganisms.

The central quality-grading main machine water production system 1 further comprises a primary concentrated water recovery system 14, a primary reverse osmosis membrane cleaning system 15 and a pH adjusting system 16.

The primary concentrated water recovery system 14 comprises a waste water tank, a sterilizer and a water pump; the outlet water of the cartridge filter 1123 is introduced into a first-stage reverse osmosis device 1125 through a first-stage high-pressure pump 1125, the concentrated water generated by the first-stage reverse osmosis device 1125 is introduced into a waste water tank, the concentrated water in the waste water tank is sterilized by a sterilizer, and then the concentrated water is supplied to water terminals such as hand washing, toilet flushing and the like where the requirement on the water quality is not high through a water pump, so that the utilization efficiency of the water can be improved, and the waste is reduced.

Wherein, the sterilizer is an ultraviolet sterilizer, an ozone sterilizer or a drug adding sterilizer, and the invention is not limited in particular.

The primary reverse osmosis membrane cleaning system 15 comprises a cleaning water tank, a cleaning water pump and a security filter; the cleaning water tank is internally provided with cleaning water for cleaning the reverse osmosis membrane, the cleaning water is filtered by the cartridge filter, and then the cleaning water is introduced into the first-stage reverse osmosis device 1125 through the cleaning water pump to flush the reverse osmosis membrane, so that the filtering effect of the first-stage reverse osmosis device 1125 is improved, and the service life of the first-stage reverse osmosis device 1125 is prolonged.

The pH adjusting system 16 is arranged in front of the secondary reverse osmosis device 121 to adjust the pH value of the pure water entering the secondary reverse osmosis device 121 to 7.5-8.0. If the pH of the pure water entering the secondary reverse osmosis device 121 is too high or too low, the pH affects the reverse osmosis membrane of the secondary reverse osmosis device 121, and affects the filtration effect of the secondary reverse osmosis device 121.

Wherein, the water in the first-stage pure water tank 113 is introduced into the second-stage reverse osmosis device 121 through the second-stage high pressure pump 123, and the concentrated water generated by the second-stage reverse osmosis device 121 is returned to the raw water tank 111 through a pipeline for circular filtration. Even if the water treated by the primary water preparation system 11 is concentrated water generated by the secondary reverse osmosis device 121, the water quality is superior to that of tap water, so that the water can be recycled to the original water tank 111 for circular water supply treatment, the water can be recycled, and the generation of sewage can be reduced. Preferably, pressure sensors are disposed at the front and the rear of the second-stage high-pressure pump 123 for detecting the water pressure in the pipeline. If the pressure sensor arranged in front of the second-stage high-pressure pump 123 detects that the water pressure of the pipeline is lower than 2kg, the second-stage high-pressure pump 123 starts to operate, if the water pressure is higher than 3kg, the pipeline is easy to burst, and the second-stage high-pressure pump 123 stops operating to protect subsequent equipment.

Wherein, the water in the second-stage pure water tank 122 is introduced into the EDI system 131 through the third-stage high-pressure pump 133. Preferably, pressure sensors are disposed at the front and rear of the third-stage high-pressure pump 133 to detect the water pressure in the pipe. If the pressure sensor arranged in front of the three-stage high-pressure pump 133 detects that the water pressure of the pipeline is lower than 2kg, the three-stage high-pressure pump 133 starts to operate, if the water pressure is higher than 3kg, the pipeline is easy to burst, and the three-stage high-pressure pump 133 stops operating to protect subsequent equipment.

The pure water entering the first-stage pure water tank 113 through the filtering device 112 has a small impurity content, but in order to avoid bacterial contamination, an immersion type ultraviolet sterilizer is arranged in the first-stage pure water tank 113 to ensure the safety of the water quality in the first-stage pure water tank 113. Preferably, the wavelength of the immersed ultraviolet sterilizer is 240-280 nm, and the illumination intensity is 150-250 MJ/cm². Preferably, a pressure sensor is further disposed in the first-stage pure water tank 113 for monitoring the water pressure in the first-stage pure water tank 113 to calculate the water level of the first-stage pure water tank 113.

The pure water entering the second pure water tank 122 through the filtering device 112 and the second reverse osmosis device 121 has a small impurity content, but in order to avoid bacterial contamination, an immersion type ultraviolet sterilizer is arranged in the second pure water tank 122 to ensure the safety of the water quality in the second pure water tank 122. Preferably, the wavelength of the immersed ultraviolet sterilizer is 240-280 nm, and the illumination intensity is 150-250 MJ/cm². Preferably, a pressure sensor is further disposed in the second pure water tank 122 for monitoring the water pressure in the second pure water tank 122 to calculate the water level of the second pure water tank 122.

The pure water entering the third pure water tank 132 through the filtering device 112, the second reverse osmosis device 121 and the EDI system 131 has a low impurity content, but in order to avoid bacterial contamination, an immersion type ultraviolet sterilizer is arranged in the third pure water tank 132 to ensure the safety of the water quality in the third pure water tank. Preferably, the wavelength of the immersed ultraviolet sterilizer is 240-280 nm, and the illumination intensity is 150-250 MJ/cm². Preferably, a pressure sensor is further disposed in the three-stage pure water tank 132 for monitoring the water pressure in the three-stage pure water tank 132 to calculate the water level of the three-stage pure water tank 132.

The terminal purification and monitoring system 3 is arranged between the pure water tank and the water terminal 2 to ensure the quality of the outlet water of the water terminal 2. In order to save space, each filtering device and each level of pure water tank of the central quality-divided main machine water production system 1 are stored in the same equipment room, while each level of pure water tank and each level of water using terminal realize water supply connection through pipelines, because each level of pure water tank and each level of water using terminal have certain distance, the pipelines may be polluted due to various reasons (aeration pipes, water cut-off and suck-back, etc.), in order to ensure the effluent quality of each level of water using terminal, the invention is realized by arranging a tail end purification and monitoring system.

According to the classification of the central quality-divided host water production system 1 and the water using terminal 2, the terminal purification and monitoring system 3 comprises a primary terminal purification and monitoring system 31, a secondary terminal purification and monitoring system 32 and a tertiary terminal purification and monitoring system 33; wherein, the primary terminal purification and monitoring system 31 is arranged between the primary pure water tank 113 and the primary water use terminal 21, namely, the primary terminal purification and monitoring system 31 is arranged on the pipeline connecting the direct drinking water use terminal, the hemodialysis water use terminal, the acid and alkali water use terminal, the flushing water use terminal, the ICU water use terminal and the operating room water use terminal with the primary pure water tank 113; after being treated by the primary water production system 11 and the primary tail end purification and monitoring system 31, the effluent of the primary water utilization terminal 21 has TDS less than or equal to 50mg/L and conductivity less than or equal to 15 mu s/cm.

The secondary end purification and monitoring system 32 is arranged between the secondary pure water tank 122 and the secondary water use terminal 22, namely, the secondary end purification and monitoring system 32 is arranged on a pipeline connecting the cleaning water use terminal and the liquid preparation water use terminal with the secondary pure water tank 122, and after the water is treated by the primary water production system 11, the secondary water production system 12 and the secondary end purification and monitoring system 32, the water discharged from the secondary water use terminal 22 has the conductivity less than or equal to 5 Mus/cm.

The three-stage end purification and monitoring system 33 is arranged between the three-stage pure water tank 132 and the three-stage water terminal 23, namely, the three-stage end purification and monitoring system 33 is arranged on a pipeline connecting the inspection water terminal and the three-stage pure water tank 132; after being treated by the first-stage water production system 11, the second-stage water production system 12, the third-stage water production system 13 and the third-stage tail end purification and monitoring system 33, the effluent of the third-stage water using terminal 23 has the conductivity less than or equal to 0.1 mu s/cm.

Referring to fig. 2 to 4, the primary terminal purification and monitoring system 31 includes a primary microporous filter 311, an overflowing ultraviolet sterilizer 312, an overflowing ozone generator 313 and a terminal water quality monitor 314, which are sequentially disposed; the secondary end purification and monitoring system 32 also comprises a primary microporous filter 321, an overflowing ultraviolet sterilizer 322, an overflowing ozone generator 323 and an end water quality monitor 324; the three-stage end purification and monitoring system 33 comprises a microporous filter 331, an overflowing ultraviolet sterilizer 332, an overflowing ozone generator 333, a two-way mixing bed 334 and an end water quality monitor 335 which are arranged in sequence.

Wherein, the microporous filter 311/321/331 is internally provided with a filter material for filtering particles with the particle size larger than 0.22 μm in pure water, the microporous filter 311/321/331 is used for removing bacteria corpses and particles generated in pipelines in the pure water due to ultraviolet disinfection, and the water quality of effluent water of primary, secondary and tertiary water use terminals is ensured.

The two-way mixed bed 334 is internally provided with a polishing cation resin filter material for filtering particles with the particle size larger than 0.1 mu m in the pure water; the two-way mixed bed 334 is used for removing bacterial corpses and particles generated in pipelines in pure water due to ultraviolet disinfection, and ensures the quality of outlet water of a tertiary water using terminal.

Because the pure water tank and the water using terminal are connected through the pipeline for water supply, in order to ensure the water outlet quality of the water using terminal, the over-flow type ultraviolet sterilizer 312/322/332 is arranged in the pipeline and used for killing bacteria in the pipeline so as to ensure the water outlet quality of the water using terminal. Preferably, the wavelength of the overflowing type ultraviolet sterilizer 312/322/332 is 240-280 nm, and the illumination intensity is 150-250 MJ/cm²。

Further, the primary end purification and monitoring system 31 further includes an overflow ozone generator 313, the secondary end purification and monitoring system 32 also includes an overflow ozone generator 323, the tertiary end purification and monitoring system 33 also includes an overflow ozone generator 333, and the ozone generated by the overflow ozone generator 313/323/333 can further kill bacteria in water, thereby effectively ensuring the quality of the outlet water at the tail end.

The tail end water quality monitor 314/324/335 is respectively used for monitoring the effluent quality of the primary water terminal 21, the secondary water terminal 22 and the tertiary water terminal 23.

The control system 4 includes a monitoring module 41, a calculating module 42, a dispatching module 43, an alarming module 44, and a maintenance module 45.

Specifically, the monitoring module 41 is connected to all of the flow sensor, the pressure sensor, the pH sensor, the conductivity sensor, the turbidity sensor, the residual chlorine sensor and the terminal water quality monitor, and is configured to acquire and display a pH value, a residual chlorine, a turbidity and a TDS of water entering the raw water tank, a residual chlorine content of water entering the residual chlorine removal device, a residual chlorine content of water entering the primary reverse osmosis device 1124, a pH value, a TDS and a conductivity of water exiting the primary water terminal, a pH value and a conductivity of water exiting the secondary water terminal, and a conductivity of the tertiary water terminal; the user can log in the control system through a mobile phone and a computer to know the current water quality condition.

The calculation module 42 calculates the service conditions of each filter element in the central quality-classifying main machine water production system 1 according to the water quality data of the central quality-classifying main machine water production system 1 and the water quality data of the water using terminal 2. Specifically, the service condition of the filter element is calculated according to the water quality data of the raw water tank, the water quality data of the water outlet terminal and the service time. When the service condition of the filter element reaches more than 90%, the filter element needs to be replaced.

The alarm module 43 alarms according to the water quality data of the central quality-based main water production system 1, the water quality data of the water terminal 2 and the service conditions of the filter elements. Specifically, when the turbidity of the tap water in the raw water tank 111 is greater than 5NTU, that is, the pipeline is polluted by an external source (pipe explosion, water cut-off suck-back, etc.), the alarm module 53 will send a first-level alarm signal; when the service condition of the filter element reaches more than 90%, the alarm module 53 sends out a secondary alarm signal; when the water quality of the water outlet of the water using terminal 2 exceeds the limit value, the alarm module 53 will send out a three-level alarm signal.

The dispatch module 44 notifies maintenance personnel to perform maintenance based on the alarm signal. Specifically, when a primary alarm signal occurs, maintenance personnel need to start the emergency water-saving device and detect whether a pipeline burst occurs; when a secondary alarm signal occurs, maintenance personnel need to replace the filter element; when a three-level alarm signal occurs, maintenance personnel need to detect whether water cut-off, pipeline burst and other conditions occur.

The maintenance evaluation module 45 evaluates according to the maintenance information of the maintenance personnel.

Specifically, the raw water tank 111 is used for storing municipal tap water, when the turbidity of tap water in the raw water tank 111 is greater than 5NTU, that is, the pipeline is polluted by an external source (pipe explosion, water cut-off suck-back, etc.), if tap water with the turbidity greater than 5NTU is directly introduced into the filter device 112, the quartz sand filter 1121 in the filter device 112 is quickly blocked, effective filtration cannot be performed, and a filter element needs to be replaced. And the primary filtering system 11 needs to be shut down for replacing the filter element, which has certain influence on the secondary filtering system 12 and the tertiary filtering system 13 and is time-consuming and labor-consuming. In order to ensure the service life of the filter element of the filtering device 112, the emergency water-saving device has lower cost and less influence to solve the problem of exogenous pollution.

Specifically, when the turbidity of the tap water in the raw water tank 111 is greater than 5NTU, the first battery valve 1151 is closed, the second battery valve 1161 is opened, so that the water in the raw water tank 111 enters the emergency water-saving device 114 through the auxiliary pipeline 115 for pre-filtering, and the water pre-filtered by the emergency water-saving device 114 enters the filtering device 112; and (3) the turbidity of the tap water in the raw water tank 111 is less than 5NTU for 30min, the first battery valve 1151 is opened again, the second battery valve 1161 is closed, and the tap water in the raw water tank 111 enters a normal filtering mode.

If the tap water is cut off and the water supply amount of the original water tank is insufficient, the water consumption monitoring system of the invention preferentially ensures the water consumption of the I-level water consumption terminal; specifically, all water using terminals except the first-level water using terminal are closed, the first-level circulating pump 24 is started, and pure water in pipelines among the first-level pure water tank 113, the second-level water using terminal and the third-level water using terminal flows back to the first-level pure water tank 113, so that the water using of the first-level water using terminals (a hemodialysis water terminal 212, an ICU water using terminal 215 and an operating room water using terminal 216) is ensured, meanwhile, the pure water is prevented from being stored in the pipelines for a long time, and the problems of bacterial regeneration and secondary pollution of microorganisms are avoided; meanwhile, the second-stage circulating pump 25 is started to return the pure water in the pipeline between the second-stage pure water tank 122 and the second-stage water terminal and the third-stage water terminal to the second-stage pure water tank 122, so that the water for the first-stage water terminal is ensured, meanwhile, the pure water is prevented from being stored in the pipeline for a long time, and the problems of bacterial regeneration and secondary pollution of microorganisms are avoided; meanwhile, the three-stage circulation pump 26 is started to return the pure water in the pipeline between the three-stage pure water tank 132 and the II-stage water terminal and the III-stage water terminal to the three-stage pure water tank 132, so as to ensure the water consumption of the I-stage water terminal 21, and simultaneously avoid the situation that the pure water is stored in the pipeline for a long time, and avoid the problems of bacteria regeneration and secondary pollution of microorganisms.

According to the hospital water monitoring system based on the Internet of things, the control system comprising the monitoring module, the calculating module, the dispatching module, the alarming module and the maintenance module is connected with the central quality-divided host water production system, the tail end purification and monitoring system and the tail end water quality monitor, so that a user can easily obtain and master the current situation of water quality of supplied water, can check the current situation in real time, can prevent the situation from happening in the future, can guarantee the safety of water quality, and can realize the transparency and safety of water quality; when the system fails, the system automatically sends alarm information to the user and automatically sends the alarm information to maintenance personnel, so that the effective and normal operation of the system can be ensured; the user can evaluate according to the maintenance information of the maintenance personnel.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. The hospital water consumption monitoring system based on the Internet of things is characterized by comprising a central quality-grading host water production system, a water consumption terminal, a tail end purification and monitoring system and a control system, wherein the tail end purification and monitoring system is arranged between the central quality-grading host water production system and the water consumption terminal;

2. The internet of things-based hospital water monitoring system of claim 1, wherein said central quality-based main water production system comprises at least a primary water supply system, a secondary water supply system and a tertiary water supply system; the terminal purification and monitoring system at least comprises a primary terminal purification and monitoring system, a secondary terminal purification and monitoring system and a tertiary terminal purification and monitoring system; according to different water quality requirements, the water terminals are at least divided into a first-level water terminal, a second-level water terminal and a third-level water terminal; the primary tail end purification and monitoring system is arranged between the primary water supply system and the primary water using terminal; the secondary tail end purification and monitoring system is arranged between the secondary water supply system and the secondary water using terminal; and the three-stage tail end purification and monitoring system is arranged between the three-stage water supply system and the three-stage water using terminal.

3. The hospital water monitoring system based on the internet of things of claim 2, wherein after being processed by the primary water production system and the primary tail end purification and monitoring system, the effluent of the primary water use terminal has TDS less than or equal to 50mg/L and conductivity less than or equal to 15 μ s/cm; after being treated by a primary water production system, a secondary water production system and a secondary tail end purification and monitoring system, the effluent of a secondary water using terminal has the conductivity less than or equal to 5 mu s/cm; after being treated by the first-stage water production system, the second-stage water production system, the third-stage water production system and the third-stage tail end purification and monitoring system, the effluent of the third-stage water using terminal has the conductivity less than or equal to 0.1 mu s/cm.

4. The hospital water monitoring system based on the internet of things of claim 3, wherein the primary water production system comprises a raw water tank, an emergency water-saving device, a filtering device and a primary pure water tank, the raw water tank and the filtering device are connected by at least two parallel pipelines of a main pipeline and an auxiliary pipeline, and the emergency water-saving device is connected on the auxiliary pipeline; the secondary water production system comprises a secondary reverse osmosis device and a secondary pure water tank; the three-level water production system comprises an EDI system and a three-level pure water tank;

5. The hospital water monitoring system based on the internet of things of claim 4, wherein a turbidity sensor and a stacked filter are arranged in the emergency water-saving device; the main pipeline is provided with a first electromagnetic valve, the auxiliary pipeline is provided with a second electromagnetic valve, and the second electromagnetic valve is arranged in front of the emergency water-saving device;

6. The hospital water monitoring system based on the internet of things of claim 4, wherein the water terminals are at least divided into a class I water terminal, a class II water terminal and a class III water terminal according to different water priority levels and purposes; wherein, the hemodialysis water terminal, the ICU water terminal and the operating room water terminal are the I-grade water terminal; the liquid preparation water terminal, the inspection water terminal and the acid and alkali water terminal are the II-level water terminals; the direct drinking water terminal, the cleaning water terminal and the flushing water terminal are the grade III water terminals;

7. The Internet of things-based hospital water monitoring system according to claim 6, wherein the first-stage pure water tank and the first-stage water terminal are provided with first-stage circulating pumps on pipelines, the second-stage pure water tank and the second-stage water terminal are provided with second-stage circulating pumps on pipelines, and the third-stage pure water tank and the third-stage water terminal are provided with third-stage circulating pumps on pipelines;

8. The hospital water monitoring system based on the internet of things of claim 3, wherein the primary and secondary terminal purification and monitoring systems each comprise a microporous filter, an overflowing ultraviolet sterilizer, an overflowing ozone generator and a terminal water quality monitor which are arranged in sequence; the three-stage tail end purification and monitoring system comprises a microporous filter, an overflowing ultraviolet sterilizer, an overflowing ozone generator, a two-way mixed bed and a tail end water quality monitor which are sequentially arranged.

9. The internet of things-based hospital water monitoring system according to claim 8, wherein said microporous filter is provided with a filter element for filtering out particles with a particle size larger than 0.22 μm in pure water;

10. The Internet of things-based hospital water monitoring system of claim 4, wherein the residual chlorine removal device comprises a residual chlorine sensor, an over-flow ultraviolet lamp and an activated carbon filter, the residual chlorine sensor being disposed behind the raw water tank and behind the softener;

an immersed ultraviolet sterilizer and a pressure sensor are arranged in the first-stage pure water tank, the second-stage pure water tank and the third-stage pure water tank; the wavelength of the immersed ultraviolet sterilizer is 240-280 nm, and the illumination intensity is 150-250 MJ/cm²；