Ozone water disinfection system for storing and distributing purified water in pharmaceutical industry

Abstract

The utility model provides an ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry. The device comprises a purified water storage tank, an ozone water manufacturing device and a distribution pipeline, the ozone water manufacturing device comprises a bipolar PEM electrolytic ozone generation pile, a cathode water tank, an anode water tank, a direct-current constant-current power supply and a gas / water mixing device, a water supply main pipe at the bottom of the purified water storage tank is divided into two paths, one path is connected with a water return main pipe through the ozone water manufacturing device, and the other path is connected with a water return main pipe through the anode water tank. The other path is connected with a distribution pipeline through an ozone concentration detector, a delivery pump, a pressure transmitter, a total delivery sampling valve, a flow control valve and an ultraviolet lamp, the distribution pipeline is also connected with a water return main pipe after passing through each workshop water consumption point, and the water return main pipe is communicated with the top of the purified water storage tank through a total return sampling valve and a qualified control valve. Compared with a pasteurization process, the device disclosed by the utility model has the advantages of simplicity in operation, low energy consumption, no chemical residue, no nitrogen oxide, no secondary pollution, good disinfection effect and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of disinfection, and relates to an ozone water disinfection system used for storing and distributing purified water in the pharmaceutical industry. Background Art

[0002] The uses of purified water in pharmaceutical factories are mainly divided into three aspects. First, in terms of cleaning, using purified water provided by the purified water system to clean equipment will not cause secondary pollution and ensure the quality of drugs; second, in terms of pharmaceuticals, purified water as the main raw material and other ingredients can meet the standards for pharmaceutical production; third, injection water. At present, the disinfection of purified water storage and distribution pipelines in the pharmaceutical industry uses ozone disinfection produced by high-temperature steam (pasteurization) and high-frequency and high-voltage corona methods. High-temperature steam disinfection (pasteurization) has high energy consumption, and a small amount of heat-resistant bacteria or bacterial spores still remain after disinfection. The ozone concentration produced by the high-frequency and high-voltage corona method is low. When air is used as the raw material, its ozone concentration is only 3% (wt%). When oxygen is used as the raw material, its ozone concentration is ≤10% (wt%). In addition, nitrogen oxides (NO X ) and nitrite, as well as secondary pollution such as air impurities remaining in the gas source. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model intends to provide an ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry.

[0004] The technical measures of the utility model are:

[0005] The invention discloses an ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry, comprising a purified water storage tank, an ozone water manufacturing device and a distribution pipeline. The ozone water manufacturing device comprises a bipolar PEM electrolytic ozone generating stack, a cathode water tank, an anode water tank, a DC constant current power supply and a gas / water mixing device. The water supply pipe at the bottom of the purified water storage tank is divided into two routes, one route is connected to the return water pipe through the ozone water manufacturing device, and the other route is connected to the distribution pipeline through an ozone concentration detector, a delivery pump, a pressure transmitter, a total delivery sampling valve, a flow control valve and an ultraviolet lamp. The distribution pipeline is also connected to the return water pipe after passing through water use points in each workshop. The return water pipe is connected to the top of the purified water storage tank through a total return sampling valve and a qualified control valve.

[0006] The utility model adopts a highly integrated bipolar PEM electrolytic ozone generating stack, a cathode water tank, an anode water tank and a DC constant current power supply to generate high-concentration ozone gas ≥18% (wt%). The gas / water mixing device uses high-concentration ozone gas and a high-efficiency sanitary gas / water mixing pump to produce high-concentration ozone water that meets the system requirements, and the ozone concentration in the water is ≥15mg / L. The high-concentration ozone water (high-efficiency broad-spectrum disinfectant) produced by the sanitary gas / water mixing pump is automatically distributed into each workshop that needs to be disinfected by the water supply main under control. After each branch is disinfected, it is transported to the return water main and connected to the upper part of the purified water storage tank, and the purified water tank is circulated and disinfected. This system completes a cycle. After disinfection, the above disinfection cycle is repeated until it meets the disinfection requirements and is automatically shut down. Compared with the current pasteurization method and corona ozone method, it has the advantages of simple operation, low energy consumption, and no chemical residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the structure of an ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry.

[0008] 1-Purified water storage tank, 2-Storage tank thermometer, 3-Discharge valve, 4-Liquid level gauge, 5-Sampling valve, 6-Switch valve, 7-Ozone water manufacturing device, 8-Delivery pump, 9-Control cabinet, 10-Pressure transmitter, 11-Flow control valve, 12-Total delivery sampling valve, 13-Ultraviolet lamp, 14-Distribution pipeline, 15-Workshop water point, 16-Water supply main, 17-Temperature detector, 18-Pressure detector, 19-Conductivity detector, 20-Back pressure valve, 21-Flow detector, 22-Return water main, 23-Ozone concentration detector, 24-Unqualified control valve, 25-Water supply control valve, 26-Total return sampling valve, 27-Respirator, 28-Qualified control valve. DETAILED DESCRIPTION

[0009] The following is a further detailed description of an ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry according to the utility model in conjunction with the accompanying drawings.

[0010] An ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry comprises a purified water storage tank 1, an ozone water manufacturing device 7 and a distribution pipeline 14. The ozone water manufacturing device 7 comprises a bipolar PEM electrolytic ozone generating stack, a cathode water tank, an anode water tank, a DC constant current power supply and a gas / water mixing device. A water delivery pipe 16 at the bottom of the purified water storage tank 1 is divided into two routes, one route is connected to a return water pipe 22 via the ozone water manufacturing device, and the other route is connected to a distribution pipeline 14 via an ozone concentration detector 23, a delivery pump 8, a pressure transmitter 10, a total delivery sampling valve 12, a flow control valve 11, and an ultraviolet lamp 13. The distribution pipeline 14 is also connected to a return water pipe 22 after passing through water use points 15 in each workshop. The return water pipe 22 is connected to the top of the purified water storage tank 1 via a total return sampling valve 26 and a qualified control valve 28.

[0011] The system uses highly integrated bipolar electrolytic ozone generator technology. The proton exchange membrane (PEM) electrolytic ozone generator uses this technology to generate high-concentration and high-purity ozone (≥20%, wt%) as an ozone source at a special anode / solution interface using purified water under the action of low-voltage direct current. The electrochemical reaction principle is: H2O→2H + +2e - +1 / 3O3. High concentration ozone is easily soluble in water, generating high concentration ozone water.

[0012] High-concentration ozone water (a highly effective broad-spectrum disinfectant) is prepared on-site using the above-mentioned high-concentration ozone gas source and the gas / water mixing device of the sanitary-grade high-efficiency turbine pump. The concentration of ozone water is ≥15mg / L, which meets the disinfection requirements of the purified water storage and distribution system.

[0013] Purified water storage tanks and distribution pipelines in the pharmaceutical industry require periodic disinfection. During disinfection, the bipolar PEM electrolytic ozone generating stack is started and turned on, so that the purified water storage tank 1 and the distribution pipeline 14 are always in a certain concentration of ozone disinfection state. At the outlet of the ozone water manufacturing device 7, the ozone concentration in the water can be as high as 15 mg / L. After the system starts the cycle, the ozone concentration in the return water gradually increases. When the ozone concentration detector 23 in the pipeline detects that the ozone concentration reaches 2 mg / L, the timing starts. Maintain the ozone water flow rate in the water supply main at 1.5 m / s and run continuously for 60 minutes. In this process, the water beam impacted from the qualified control valve 28 flushes the purified water storage tank 1 to disinfect the tank wall. The part above the liquid level will continuously overflow due to the ozone gas in the ozone water, thereby reaching a higher concentration of gaseous ozone, disinfecting the inner wall of the storage tank, and disinfecting the pipeline of the circulation system and removing the biofilm. A higher flow rate can also play a role in peeling off the biofilm. The ozone concentration of the return water is monitored online, and the disinfection is completed after continuous operation for 60 minutes. Close the ozone water manufacturing device and the switch valve on its circuit. The ultraviolet lamp 13 is turned on, and the ultraviolet lamp rays with a wavelength of 253.7nm are selected to decompose the ozone and completely eliminate it from the distribution pipeline. The ozone concentration in the circulation pipeline after the decomposition of the ultraviolet lamp 13 is monitored in real time by the ozone concentration detector 23 until the ozone concentration sensor detector 23 detects that the ozone concentration is lower than 0.05mg / L, reaching the standard of safe discharge, and all the ozone water in the circulation pipeline is discharged. Fresh purified water is pumped in again, and the purified water storage tank and distribution pipeline are cleaned twice. The purified water after cleaning is completely discharged to ensure that there is no residual ozone in the pharmaceutical water at each water point in the circulation pipeline, and fresh purified water is pumped in again, and enters the purified water storage tank for use at each workshop water point.

[0014] Regarding the details on the purified water circulation pipeline, the utility model is further introduced as follows.

[0015] The distribution pipeline 14 passes through each workshop water point 15 and is connected to the return water main 22 through the flow control valve 11, the temperature detector 17, the pressure detector 18, the conductivity detector 19, the sampling valve 5, and the back pressure valve 20.

[0016] A flow detector 21 is installed on the water return main 22 .

[0017] The top of the purified water storage tank 1 is connected to the air through a respirator 27 to balance the pressure in the purified water storage tank.

[0018] The top of the purified water storage tank 1 also has an unqualified control valve 24 connected in parallel with the qualified control valve 28. The purified water storage tank 1 is also connected to the water replenishment system through the water replenishment control valve 25.

[0019] A thermometer 2 is installed at the bottom of the purified water storage tank 1, and a liquid level meter 4 is installed at the side.

[0020] The water supply main pipe 16 is provided with a switch valve 6 before the delivery pump 8, and the ozone water manufacturing device 7 is provided with a switch valve 6 on the water inlet pipe.

[0021] Various switch valves and flow control valves are used to control the direction and flow rate of purified water. Temperature detectors, conductivity detectors, etc. are used to detect the properties of purified water itself. These are easy to understand and implement for those skilled in the art, and are irrelevant to disinfection, so they are not described in detail in this utility model.

[0022] The ozone water disinfection system for storing and distributing purified water in the pharmaceutical industry of the utility model also includes a control cabinet for displaying data of various detection instruments, controlling the switching of valves, the switching of bipolar PEM electrolytic ozone generating stack and the delivery pump. It is easy to understand and implement for those skilled in the art and will not be described in detail.

[0023] Compared with the existing high-temperature steam disinfection (pasteurization) and high-frequency high-voltage corona discharge ozone disinfection, the utility model greatly reduces energy consumption and operating costs and improves the sanitary standards of purified water system disinfection. It avoids the nitrogen oxides (NO X ), nitrite and other secondary pollution such as residual air impurities in the air source.

[0024] The disinfection process of the utility model can be widely used in the fields of pharmaceutical industry, drinking water industry, medical hygiene, food hygiene, semiconductor chip manufacturing, environmental protection and scientific research.

Claims

1. An ozone water disinfection system for the storage and distribution of purified water in the pharmaceutical industry, characterized in that: It comprises a purified water storage tank, an ozone water manufacturing device and a distribution pipeline. The ozone water manufacturing device comprises a bipolar PEM electrolytic ozone generating stack, a cathode water tank, an anode water tank, a DC constant current power supply and a gas / water mixing device. The water supply main at the bottom of the purified water storage tank is divided into two routes, one route is connected to the return water main via the ozone water manufacturing device, and the other route is connected to the distribution pipeline via an ozone concentration detector, a delivery pump, a pressure transmitter, a total delivery sampling valve, a flow control valve, and an ultraviolet lamp. The distribution pipeline is also connected to the return water main after passing through the water use points of each workshop. The return water main is connected to the top of the purified water storage tank via a total return sampling valve and a qualified control valve.

2. The ozone water disinfection system according to claim 1, characterized in that: After the distribution pipeline passes through the water use points in each workshop, it is connected to the return water main through the flow control valve, temperature detector, pressure detector, conductivity detector, return water sampling valve, and back pressure valve.

3. The ozone water disinfection system according to claim 1, characterized in that: A flow detector is installed on the water return main.

4. The ozone water disinfection system according to claim 1, characterized in that: The top of the purified water storage tank is communicated with the air through a respirator.

5. The ozone water disinfection system according to claim 1, characterized in that: The top of the purified water storage tank is provided with an unqualified control valve connected in parallel with the qualified control valve, and the purified water storage tank is also connected with a water replenishment system through a water replenishment control valve.

6. The ozone water disinfection system according to claim 1, characterized in that: A thermometer is installed at the bottom of the purified water storage tank, and a liquid level meter is installed at the side.

7. The ozone water disinfection system according to claim 1, characterized in that: The water supply main pipe is provided with a switch valve before the delivery pump, and the ozone water manufacturing device is provided with a switch valve on the water inlet pipe.

Images