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HJ 2522-2012

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HJ 2522-2012English659 Add to Cart Days<=5 Technical requirement for environmental protection products. Ultraviolet disinfection equipment Valid HJ 2522-2012
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Detail Information of HJ 2522-2012; HJ2522-2012
Description (Translated English): Technical requirement for environmental protection products. Ultraviolet disinfection equipment
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: C59
Classification of International Standard: 11.080
Word Count Estimation: 25,211
Quoted Standard: GB/T 191; GB 4208; GB 5749; GB/T 9969; GB/T 13306; GB/T 13384; GB 18466; GB 18596; GB 18918; GB/T 18920; GB/T 19837-2005
Drafting Organization: China Environmental Protection Industry Association (Water Pollution Control Committee)
Regulation (derived from): Department of Environmental Protection Notice No. 47 of 2012;
Summary: This standard specifies the basic requirements for UV disinfection equipment, performance requirements, test methods, inspection rules and signs, packaging, transportation and storage of technical requirements. This standard applies to drinking water, mun

HJ 2522-2012
Technical requirement for environmental protection products.Ultraviolet disinfection equipment
People's Republic of China National Environmental Protection Standards
Environmental protection product UV disinfection device
Technical requirement for environmental protection products
Ultraviolet disinfection equipment
2012-7-31 release
2012-11-1 implementation
Issued by the Ministry of Environmental Protection
Table of Contents
Foreword Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Basic requirements 2
5 Performance Requirements 4
Test Method 5 6
7 Inspection rules 5
8 signs, packaging, transportation and storage 6
Appendix A (normative) UV dose - response curve test 8
Appendix B (normative) UV doses tested 11 biometric
Annex C (normative) UV and UV efficiency calculation Power Test 14
Annex D (normative) UV lamp aging factor test 16
Appendix E (normative) quartz tube ultraviolet transmittance test 17
Foreword
To implement the "People's Republic of China Water Pollution Prevention Law" to regulate the production, manufacturing ultraviolet disinfection equipment, improve the means of UV disinfection
Quality home, the development of this standard.
This standard specifies the basic requirements for ultraviolet disinfection equipment, performance requirements, test methods, inspection rules and signs, packaging, transportation
And storage.
This standard is developed by the Ministry of Environmental Protection Science, Technology organization.
This standard drafting units: China Environmental Protection Industry Association (Water Pollution Control Committee), Environmental Protection Technology Co., Fujian Newland
Division, Tsinghua University, China Disease Prevention and Control Center.
This standard MEP July 31, 2012 for approval.
This standard since November 1, 2012 implementation.
The standard explanation by the Ministry of Environmental Protection.
Environmental protection product UV disinfection device
1 Scope
This standard specifies the basic requirements for ultraviolet disinfection equipment, performance requirements, test methods, inspection rules and signs, packaging, transportation
And storage and other technical requirements.
This standard applies to drinking water, urban waste water, recycling water, hospital waste water, sewage and other livestock farms ultraviolet disinfection process
Line sterilizing apparatus.
2 Normative references
This standard incorporates the following documents contain provisions. For undated references, the effective version applies to this standard.
GB/T 191 Packaging - Pictorial signs
GB 4208 housing protection (IP Code)
GB 5749 drinking water health standards
GB/T 9969 Industrial Product Manual General
GB/T 13306 signs
GB/T 13384 mechanical and electrical products packaging General technical conditions
GB/T 15464 instrumentation packaging technology
GB 18466 medical institutions water pollutant discharge standards
GB 18596 livestock and poultry breeding pollutant emission standards
GB 18918 Municipal Wastewater Treatment Plant Pollutant Emission Standards
GB/T 18920 urban recycling urban miscellaneous water quality
GB/T 19837-2005 urban drainage ultraviolet disinfection equipment
"Drinking water disinfectants and disinfection equipment health safety evaluation norms" (Trial) health supervision [2005] No. 336
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 UV ultraviolet (UV)
Wavelength of 100 nm ~ 400 nm electromagnetic waves, which means that ultraviolet germicidal wavelength of 200 nm ~ C-band ultraviolet light of 280 nm
(UVC).
3.2 UV disinfection equipment Ultraviolet disinfection equipment
The use of ultraviolet disinfection of water treatment equipment.
3.3 Closed ultraviolet disinfection device closed-vessel ultraviolet disinfection equipment
Also known as pressure pipe UV disinfection device disinfection within a closed pipe flow UV disinfection device, including: Closed Consumers
Poison chamber, UV lamp, quartz tube, ballast, UV intensity sensors, quartz tube cleaning equipment, cleaning power unit (such as a pneumatic
Machines, hydraulic pumps, etc.), electrical power distribution and control systems.
3.4 Open Channel UV disinfection device open-channel ultraviolet disinfection equipment
Also known as canal ultraviolet disinfection device is installed in the open channel flow UV disinfection disinfection equipment, including: UV lamp module,
Module holder, visor, repair rack module, the module manual cleaning tank, automatic quartz sleeve cleaning device, the cleaning power plant (such as air compressors,
Hydraulic pumps, etc.), module lifting device, ballast, UV intensity sensors, electrical power distribution and control systems.
3.5 UV lamp module Ultraviolet lamp module
Several branch UV lamp and quartz sleeve fixedly mounted on the frame of a standardized structure.
3.6 UV intensity ultraviolet intensity (I)
UV and UV power per unit area perpendicular to the direction of propagation on the units of mW/cm2.
3.7 UV efficiency ultraviolet efficiency
UV germicidal UV lamp power to its input power ratio.
3.8 UV dose ultraviolet dose (Dose)
Ultraviolet energy per unit area, obtained by multiplying the intensity of ultraviolet irradiation time, in units of mJ/cm2.
3.9 UV dose - response curve of ultraviolet dose-response curve
UV dose and test organisms indicates loss curve relationship between the two levels of living. Inactivation level logarithmic inactivation rate lg (N0/N) or
Number residual rate lg (N/N0) representation. N0 is the concentration of microorganisms before UV irradiation, N is the concentration of microorganisms after ultraviolet irradiation. Test Methods
See Appendix A.
3.10 biometric dose biodosimetry dose
Also known as RED dose (reduction equivalent dose). Characterization of UV disinfection device under certain water conditions can be achieved
UV dose, an ultraviolet lamp unit doses each having a flow rate of representation.
3.11 UV transmittance of ultraviolet transmittance (UVT)
UV transmission percentage of a certain wavelength and intensity ultraviolet transmittance before UV intensity after a specific thickness of the dielectric. If not specified
Medium thickness, the default is medium thickness 1cm. The ultraviolet transmittance of 254 nm wavelength is written as T254.
3.12 quartz tube quartz sleeve
To suit the UV lamp, so that the UV lamp and the water separated from the quartz tube.
3.13 Low-voltage lights low pressure lamp
Working pressure of 0.13 Pa ~ 1.3 Pa mercury vapor lamp. Low-voltage lights input electric power per cm of arc length of approximately 0.5 W, output Main
To single 254nm UV spectrum.
3.14 high-strength low-pressure lamps low pressure high output lamp
It refers to the input electric power per cm of arc length of approximately 1.5 W ~ 10 W low-pressure mercury vapor lamp. High-strength low-pressure amalgam lamp is mainly lamps (mercury steam
Vapor from amalgam), the output is mainly 254 nm single-spectrum ultraviolet light, the unit arc output UV power greater than low pressure lamps.
3.15 medium pressure lamps medium pressure lamp
Working pressure of 0.013 MPa ~ 1.3 MPa mercury vapor lamp. Medium pressure lamp input electric power per cm of arc length of approximately 50 W ~ 150
W, the output is a wide spectrum of ultraviolet and visible light.
3.16 UV lamp life operation life of ultraviolet lamp
Under normal conditions, UV light disinfection UV power drops to a certain value (low voltage 70% of rated power, low
High-strength light pressure is 80% of rated power, medium pressure lamps is 70% of rated power) when the accumulated run time.
3.17 UV lamp aging factor lamp aging factor
UV germicidal UV lamp power and the new end of life when the UV lamp operation to the specified operating 100h after UV germicidal power of
Ratio, expressed by CLH.
3.18 scaling factor fouling factor
UV lamps sleeve water disinfection process, since water contamination (e.g., microorganisms, oils, minerals, etc.) is deposited on the surface of the sleeve
Fouling caused sleeve UV transmittance decreased after using specific cleaning method, quartz tube ultraviolet transmittance not use the new
Fouling than quartz tube ultraviolet transmittance of called scaling factor, represented by CJG.
4 Basic requirements
4.1 Manufacturing
UV disinfection apparatus shall be prescribed procedures approved by the drawings and technical documents manufacture, and compliance with this standard.
4.2 Appearance
4.2.1 UV disinfection device surface should be smooth, without irregularities and other significant effect on the appearance of defects.
4.2.2 The paint should be solid uniform, no bubbles, no accumulation and flow marks.
4.2.3 casting surface should be smooth, nonporous, trachoma, obvious cold shut lines and the like.
4.2.4 Electrical wiring should be neat cabinet firmly in line with the provisions of the design drawings, each clearly marked wires exhaustive. Electrical cabinet enclosure shall be non-destructive
hurt.
Raw material and 4.3
4.3.1 Closed UV disinfection device
Used for drinking water and urban sewage recycling water disinfection sterilization chamber closed, the material should be used or not less than 0Cr18Ni9
UV and corrosion resistance equivalent to other materials. For urban sewage, hospital wastewater, livestock wastewater disinfection sterilization chamber closed,
Materials should not be less than 0Cr17Ni12Mo2 or UV resistance and corrosion resistance equivalent to other materials.
4.3.2 Open Channel UV disinfection unit
Underwater parts of other materials or material should not be below 0Cr17Ni12Mo2 anti-corrosive wastewater (such as polytetrafluoroethylene); Water timber parts
Quality should not be less than 0Cr18Ni9 or other material resistance to high salt and humid air corrosion.
4.4 parts
4.4.1 electrical control cabinet
Electrical control cabinet should be able to display the working status of the UV lamp, UV lamp cumulative operating time, the temperature inside the power supply voltage and current and other parameters.
4.4.2 Ballast
UV lamp ballasts should be electronic ballasts. The system uses high-strength low-pressure lamp (amalgam lamps), the electronic ballast output power should be
Adjustable from 50% to 100% range.
4.4.3 UV lamp
4.4.3.1 UV efficiency
New UV lamp efficiency and low-voltage high-strength low-pressure lamps not less than 35%, the efficiency of the new UV medium pressure lamps not less than 15%.
4.4.3.2 UV lamp life
In normal operation and the switch lamp 000 conditions, the low-pressure lamp life is not less than 8 000h, high-strength low-pressure lamp life of not less than 12
000h, medium pressure lamp life is not less than 5 000 h.
4.4.3.3 UV lamp aging factor
In the ultraviolet lamp operating life time, low-pressure lamp aging factor is not less than 70%, the aging factor of high-strength low-pressure lamp is not less than 80%
Medium pressure mercury lamp aging coefficient of not less than 70%.
4.4.4 quartz tube
Quartz tube quartz UV transmittance per mm thickness of not less than 90%.
4.4.5 quartz tube cleaning device
Cleaning device can be adjusted according to need cleaning frequency, cleaning quartz sleeve should be smooth, flexible, no shaking feeling.
4.5 Degree of protection
4.5.1 Closed sterilization chamber pressure
Closed sterilization chamber pressure (pressure) shall be not less than 0.8MPa; no pressure required for ultraviolet disinfection device, the pressure should not small
At 0.2MPa.
4.5.2 UV lamp module degree of protection
Water protection modules and other parts; UV lamp module underwater part of protection not less than the provisions GB 4208 or equivalent grade of IP68
Not below IP65 or equivalent level.
4.5.3 electrical control cabinet Protection class
Open-air use of electrical control cabinet and other functions Cabinet protection rating shall comply with the provisions of GB 4208, and not less than IP65 or equivalent, etc.
Level; electrical control cabinet degree of protection cover and interior should comply with GB 4208 stipulates that not less than IP56 or equivalent level.
4.5.4 Insulation resistance
Distribution lines and control lines of the electrical control cabinet insulation resistance should be not less than 2MΩ.
5 Performance Requirements
5.1 biometric dose
5.1.1 Drinking Water Disinfection
5.1.1.1 UV disinfection device in water quality addition to chlorine and microbiological indicators, other indicators should be consistent with the provisions of GB 5749, and purple
Outside the transmittance T254 is not less than 85%.
When 5.1.1.2 UV disinfection apparatus for disinfection of drinking water, biological validation UV dose should not be less than 40 mJ/cm2, disinfection should be
The Ministry of Health "drinking water disinfectants and disinfection equipment health safety evaluation norms" (Trial) requirements, the water should reach GB 5749
Microbial Indicators corresponding requirements.
5.1.2 urban wastewater disinfection
5.1.2.1 UV disinfection device into the urban sewage should be subject to secondary biological treatment. For an A sewage discharge standards, in addition to microorganisms
Was indexes, the other indicators of water UV disinfection device shall comply with GB 18918 a A, and SS is not more than 10 mg/L,
Ultraviolet transmittance T254 is not less than 65%; for a B and secondary effluent discharge standards, in addition to microbiological indicators, UV disinfection
Other indicators influent devices should meet the GB 18918's requirements, and an SS B is not more than 20 mg/L, no more than two of the SS 30
mg/L, T254 UV transmittance of not less than 50%.
5.1.2.2 UV disinfection apparatus for urban sewage disinfection, for an A emission standards for sewage, UV dose should not be less than
20mJ/cm2; for a B and secondary effluent discharge standards, UV dose should not be less than 15 mJ/cm2. The water should reach GB 18918
Under the microbiological indicators.
5.1.3 city sewage water disinfection
5.1.3.1 UV disinfection device into the city sewage water should be after secondary biochemical precipitation, the water depth treatment, in addition to chlorine and micro
Biological indicators, other indicators should comply with GB/T 18920, and SS is not more than 10 mg/L, an ultraviolet transmittance of not less than T254
65%.
5.1.3.2 When ultraviolet disinfection means for city sewage water disinfection, ultraviolet biometric dose should not be less than 80 mJ/cm2, the
Water should meet the requirements of microbiological indicators GB/T 18920 stipulated.
5.1.4 hospital disinfection
5.1.4.1 UV disinfection device into the hospital sewage should be after secondary biological treatment or other process water depth treatment, arrange for
Discharge sewage discharge standard SS is not more than 20 mg/L, according to discharge sewage pretreatment standards SS is not more than 60mg/L, ultraviolet transmittance T254
Not less than 60%.
When 5.1.4.2 UV disinfection apparatus for disinfection of hospital sewage, biological validation UV dose should not be less than 60 mJ/cm2, the water should be
GB 18466 achieve the appropriate microbiological indicators requirements.
5.1.5 Disinfection livestock farm wastewater
5.1.5.1 UV disinfection device into the livestock farm wastewater should be through other secondary biological treatment or advanced treatment process water,
Quality requirements of SS is not greater than 20 mg/L, T254 UV transmittance of not less than 60%.
When 5.1.5.2 UV disinfection equipment for livestock farms disinfection, biological verification dose UV should not be less than 60 mJ/cm2,
GB 18596 water should meet appropriate microbiological indicators requirements.
5.2 scaling factor
Scaling factor should be greater than 85%.
6 Test methods
6.1 Visual inspection
Visual detection methods.
6.2 electrical control cabinet test
In an energized state, each instrument is working properly, the indicator indicates that all UV lamp normally open.
6.3 UV efficiency
According to the method specified in Annex C of the test.
6.4 UV lamp aging factor
According to the method prescribed in Appendix D test.
6.5 quartz tube ultraviolet transmittance
The method of testing according to Annex E requirements.
6.6 quartz sleeve cleaning device
The water poured into the enclosed reactor cavity or open channel UV reactor modules are installed lamp UV lamp is partially immersed in water in the pool, open
Turn the power on or hand wash push rod. Smooth cleaning process, no significant shake the device.
6.7 Closed sterilization chamber pressure test
Pressure test at the highest non-impact pressure 1.0 MPa pressure maintained in 30 min, and each cavity seal not leak. When operating pressure
When the force is not more than 0.4 MPa, the pressure test can be kept 30 min at 1.5 times the working pressure cavity and each seal must not leak.
6.8 Degree of protection
According to the method test GB 4208 regulations.
6.9 Insulation resistance measurement
Were measured with 500V megger distribution lines and control lines of the electrical control cabinet insulation resistance is not less than 1 meter accuracy.
6.10 biometric dose
According to GB/T 19837 method, the specific operation by the method specified in appendix B tests.
6.11 scaling factor
According to GB/T 19837-2005 Test Method B of Appendix.
6.12 watery ultraviolet transmittance T254
The UV-Vis spectrophotometer to test the transmission gear, test and adjust the wavelength to 254 nm. Pure water as blank, poured into 1cm
Pathlength quartz cuvette, transmittance was adjusted to 100%, will be replaced by pure water samples tested, reading photometer is the measured water samples ultraviolet
Transmittance.
7 Inspection rules
7.1 Inspection classification
Test type test and factory inspection sub-categories.
7.1.1 factory inspection
7.1.1.1 equipment in the factory and the project should be required detection method by one test before the factory inspection. Each installed UV disinfection
Set product certification and shall be accompanied by instructions for use.
7.1.1.2 factory inspection items and test methods are shown in Table 1.
7.1.2 Type inspection
7.1.2.1 When one of the following conditions, type of inspection should be carried out:
a) The new production trial or old products to the plant;
There are major changes b) the product structure, materials, main components, processes, etc., may affect product performance;
c) Normal production, every three years;
d) Product Discontinuance more than three years, the production recovery;
e) factory test results with the previous type inspection when there is a big difference.
Type inspection items and methods 7.1.2.2 UV disinfection device shown in Table 1.
7.1.2.3 for processing greater than 80m3/h of equipment from the factory inspection qualified products in Taiwan random sampling; the handling capacity of less than
80 m3/h of equipment from the factory inspection of a random sample of three products.
Table 1 Test items and test methods
No. Test item Test type requires test methods
Type test factory inspection
1 Appearance √ √ 4.2 6.1
2 raw materials and materials √ √ 4.3 Supplier test report
3 electrical control cabinet √ √ 4.4.1 6.2
4 UV efficiency √ - 4.4.3.1 6.3
5 UV lamp aging factor √ - 4.4.3.3 6.4
6 quartz tube √ - 4.4.4 6.5
7 quartz sleeve cleaning device √ - 4.4.5 6.6
8 Closed sterilization chamber pressure √ - 4.5.1 6.7
9 protection class √ - 4.5.2 4.5.3 6.8
10 Insulation Resistance √ √ 4.5.4 6.9
11 biometric dose √ - 5.1 6.10
7.2 determine the rules
7.2.1 factory inspection if a failure can not be manufactured.
7.2.2 Type test if a failure should double sampling, and failed items tested; if still fail, it is judged substandard
grid.
8 signs, packaging, transportation and storage
8.1 mark
Signs shall comply with GB/T 13306 of. Packaging - Pictorial signs should be consistent with the provisions of GB/T 191's.
8.2 Packaging
8.2.1 UV disinfection device packaging should comply with GB/T 13384 of.
8.2.2 Electrical accessories packaging should comply with GB/T 15464 of.
8.2.3 Instructions shall comply with the provisions of GB 9969.1.
8.3 Transportation and Storage
Transport 8.3.1 UV disinfection devices should gently, the way can not drag, throw touch.
8.3.2 UV lamp during transport to avoid the rain and snow shower hit and strong mechanical vibration.
8.3.3 UV lamp should be stored in a relative humidity less than 85% and well-ventilated indoor air should not corrosive gases. UV extinction
The main components with zero toxicity means should be stored in a clean dry warehouse, to prevent moisture deterioration.
Appendix A
(Normative)
UV dose - response curve test
A.1 Scope
This method is applicable to microorganisms UV dose - response curve test.
A.2 Principle
Microbial samples by different doses of UV radiation obtained after inactivation of different levels, the relationship between UV dose and deactivation levels with song
Lines, and called UV dose - response curve.
A.3 equipment and materials
A.3.1 parallel light ultraviolet radiometer.
Parallel light ultraviolet radiometer (collimated beam apparatus) it is mainly composed of UV light box, parallel radiation cylinder, magnetic stirrer
Mixed with other components, as shown in Figure A.1. UV lamp (40 W low-voltage lamps) installed in the box to shield ultraviolet radiation. And connected to Lightbox
Parallel radiation cylinder (inner diameter of about 10 cm), for guiding the ultraviolet light parallel to the length can be adjusted to the sample surface ultraviolet
Adjustable intensity. End of the barrel is equipped with radiation shielding plate is used to control UV irradiation time. A sample solution containing microorganisms in Petri dishes (diameter 9
cm) inner surface as close to the end of the barrel of radiation (within 2 cm), and placed on the rotor magnetic stirrer, stirring constantly, to ensure that the sample solution
Each liquid particle are subjected to a uniform UV radiation.
Stirrer
Sample solution
Visor
Radiation barrel
UV lamp
Lightbox
Figure A.1 parallel light ultraviolet radiometer schematic
A.3.2 ultraviolet radiation intensity meter.
It should be able to measure the 254 nm wavelength UV intensity (0 ~ 1) mW/cm2.
A.3.3 rotor magnetic stirrer and φ3 mm × 40 mm stir.
A.3.4 UV spectrophotometer.
Wavelength tunable within the range of 180 nm ~ 380 nm.
A.3.5 Ф9 cm dish.
A.3.6 quartz cuvette (pathlength 1 cm).
A.3.7 stopwatch.
A.3.8 power supply.
A.3.9 UV protective glasses.
A.3.10 routine microbiology experiment conditions necessary for other devices.
A.4 Test Preparation
A.4.1 UV dose test operation shall aseptic requirements.
A.4.2 UV test operation should dress appropriately (white coat), and wear UV protective glasses.
A.4.3 adjustment parallel light ultraviolet radiometer radiation window length to give 0.1 mW/cm2 for about UV intensity (according to the test microorganism
Substance tolerance to UV adjust different UV intensity, the maximum exposure time control in less than 20min).
A.4.4 test microbial samples
Sample test organisms usually Bacillus subtilis (ATCC 9372), MS2 bacteriophage or other microorganisms representative
It was obtained, after laboratory culture, purified water appropriate sterile diluent (diluted to about 106/ml) after.
A.4.5 The UV spectrophotometer adjusted to a wavelength of 254 nm, preheat 30min. In the case of adjusting the optical path cutting instrument reading is "0",
Loaded with pure water quartz cuvette adjustment apparatus transmittance was "100%", repeated the steps above to adjust the "0" and "100%" a few times,
Until "0" and "100%" reading to stabilize. The test microbial samples shaken up and down 20 times, take a small amount transferred to another quartz cuvette,
Ultraviolet transmittance measuring wavelength of 254 nm T254.
A.4.6 closed shutter open parallel light ultraviolet radiometer (power plug on the power supply), to preheat 30min UV lamp work stable
Set, work area with disinfectant wipe.
A.4.7 average incident ultraviolet light intensity of the test sample (0I) Measurement
Using the corrected intensity of UV radiation meter, the probe of the photosensitive surface in exactly the same height of the sample surface height and the lamp
Within the scope of the sample receiving position below the center (diameter 9cm), evenly distributed test 30 points (with graph paper draw a good positioning), the
UV intensity this 30-point test was averaged to obtain the average incident ultraviolet light intensity of the sample (equation A.1):

== 10 (A.1)
Where:
0I - average incident UV intensity, mW/cm2;
n-- uniform distribution of the total number of points;
Incident UV intensity Ii-- i-point test, mW/cm2;
The average UV intensity A.4.8 test sample was calculated (equation A.2):
2540) 1 (
LnTH
TII
avg ⋅-
- = (A.2)
Where:
Iavg-- average UV intensity, mW/cm2;
T254-- sample 254nm wavelengths of ultraviolet light transmittance;
Depth H-- Petri dish sample solution, i.e., the volume of the sample solution in a Petri dish (ml) divided by the dish area (cm2), cm.
A.4.9 According to the test microorganism tolerance to ultraviolet light, pre-set sample series UV dose Dose (usually 5 to 7
A UV dose), parallel computing ultraviolet light irradiation time required for each dose (Equation A.3):
avgI
Doset = (A.3)
Where:
t-- parallel ultraviolet light irradiation time, s;
Dose-- UV dose, mJ/cm2.
A.5 Test Procedure
A.5.1 sample shaken up and down 20 times, 50 mL sample into Ф9 cm sterile Petri dish and placed on a magnetic stirrer. Stir
Speed to ensure that the sample is thoroughly mixed, no drops of water splashing and no significant subsidence whirlpool appropriate. Check whether the blender and samples under UV light side
Central location.
A.5.2 open shutter, sample radiation to the first time a set dose required to close the shutter. The sample is placed in another blender
Continue stirring to prevent sedimentation of particles caused by the uneven distribution of microorganisms, microbial quantity and timely detection and analysis.
A.5.3 A.5.2 and A.5.3 Repeat steps, a set dose the next test until the test is completed so the set dose. Testing should be according to the ultraviolet
Line parallel light irradiation time from long to short order will be.
A.5.4 For each sample to predict the possible concentration of microorganisms, and then select 2 to 3 proper dilution (after every such culture dish
20 ~ 200 colonies), a membrane method (or other suitable method) quantitative analysis of microorganisms. Filter by number of microorganisms from less to
More order, and filtered to remove the membrane is placed booing medium petri dish, and make sample number, the amount of dilution, the sample size and radiation
Time record. To prevent sample cross contamination, should be disinfected before each filter funnel and filter head.
A.5.5 After each dose measurement analysis is complete, the last to do 0-dose concentration of the test microorganism microbial samples analyzed to obtain N0.
A.5.6 In order to ensure the validity of the test, all the different radiation doses, should be done in parallel test is repeated twice.
A.5.7 All dish should be immediately placed in a suitable temperature inversion cultivation culture box, record the temperature and time of training. After incubation
Record number of microorganisms petri dish.
After A.5.8 UV radiation to determine the concentration of the sample N: 20 ~ 200 colonies after selective culture dish, the concentration of N by the following public
It is calculated, and averaged repeat test 2:
)/(
Lcfu
ml
N) membrane filter sample volume (
Sample dilution dish colonies ×× = (A.4)
A.6 UV dose - response curve
Mapping A.2 UV dose based on test results - response curve. Figure A.2 shows that UV dose and test microorganism inactivation level
relationship. FIG abscissa UV dose (mJ/cm2), the vertical axis is the test microorganism inactivation level, with the removal of the number, ie
lg (N0/N), N0 is the concentration of microorganisms to ultraviolet radiation before, N is the concentration of microorganisms after UV radiation.
UV dose/mJ/cm2
/ L
g (
N 0
/ N
Figure A.2 UV dose - response curve
Appendix B
(Normative)
UV dose biological verification test
B.1 Scope
This method is suitable for testing the ultraviolet disinfection device UV dose biological verification.
B.2 Principle
By adjusting and given ultraviolet disinfection device (open channel or closed) tested water ultraviolet transmittance, and by adding the test
Microbial test, the test of the device test microorganism inactivation at different levels of water flow conditions, to obtain the same level of inactivation of microorganisms
UV dose - response curve (see Appendix A) control, according to the UV dose - response curve inactivation level will be converted to the corresponding
UV doses, to obtain the biometric dose of UV disinfection device being tested, and a flow rate per lamp - UV dose curve
FIG. For open-channel UV disinfection equipment, biological testing to verify dose when appropriate to reduce the pilot scale, often using 8 ~ 16
UV light apparatus for testing a virtual reality. However, the structural characteristics simulation device (UV lamp spacing and other ancillary hydraulics factors that may affect the
Member) should be consistent with the structural characteristics of the real device. Biometric dose thus obtained is regarded as biometric dose of UV disinfection device,
And to determine the number of lamps UV disinfection device must flow and dosage requirements under the test results.
B.3 test equipment and materials
B.3.1 Test apparatus
Figure B.1 is a schematic diagram of the process of biological verification test dose of UV disinfection device. Mainly by the inlet pipe, outlet pipe, UV extinction
Poison means necessary transmission rate modifier was added and the test microorganism solution tank plus tank and meter and other components.
Figure B.1 schematic test device
B.3.2 test organisms
Under normal circumstances the various test organisms ultraviolet disinfection device should be used Bacillus subtilis (ATCC 9372) or MS2
Bacteriophage as measured by micro-organisms, may be used if necessary, other microorganisms representative.
Test organisms after laboratory culture, the preparation of concentration (in 1010/L ~ 1011 Ge/L concentration is appropriate) into the dosing tank
Inside, and has been continuously stirred until the testing is complete, the mixture was stirred for half an hour before starting the test.
B.3.3 ultraviolet transmittance modifier
Instant coffee is usually used as the transmission adjusting agent. Prepared at a concentration of about 1% (or other suitable concentration) of a solution of instant coffee loaded
Dosing into the tank, and has been continuously stirred until the testing is complete, the mixture was stirred for half an hour before starting the test.
B.3.4 test water
Large pool with water from the pre-test of its capacity to meet the requirements of the test water, which water should be free of interference testing and microorganisms
Microbial liquid coffee solution
Flowmeter
Water
Mixing centrifugal pump
UV disinfection device
Water
valve
Other materials commonly used tap water. Water should be placed 48 h, residual chlorine decay to less than 0.01 mg/L after use, such as those containing the test
Interference of microorganisms may be sterilized using ultraviolet. If the test is not the water, liquid coffee can be directly and micro test before the test
Biological added to the pool to adjust the transmittance and the concentration of microorganisms to set requirements (note to mix well), by adjusting the water flow directly into the
Water and effluent sampling tests.
B.4 detecting step
B.4.1 according to actual needs, set the UV transmittance of the T254 test water and 5 to 7 evenly spaced target water flow Q.
B.4.2 with a 1cm pathlength quartz cuvette test 254 nm UV transmittance of the coffee solution and test water in the UV spectrophotometer
Or absorbance. The relationship between absorbance and transmittance is:
254lgTA - = (B.1)
Where:
T254--254nm ultraviolet transmittance;
A - 1cm optical path of the UV absorbance at 254nm.
Absorbance of the test liquid coffee, coffee if concentration is too large, can be diluted before measuring the absorbance coffee liquid equal dilution multiply dilute
Measured absorbance after release.
B.4.3 sterilization chamber with tap water and flooded all of the UV lamp. Turn the UV lamp and adjusted to the required power, the UV lamp preheating half
Hour to steady state.
B.4.4 adjusting test device inlet valve to obtain the target water flow.
B.4.5 calculated according to the formula B.2 coffee liquid injection rate, calculated according to the results of injecting liquid coffee, adjust the water ultraviolet transmittance.
jc
k A
QAA
⋅- =) ((B.2)
Where:
qk-- coffee liquid injection pipe in the rate, L/min;
UV Ac-- preset water disinfection apparatus of UV absorbance at 254 nm;
Aj-- not add coffee liquid water and bacteria of UV absorbance of 254 nm;
Influent flow Q-- ultraviolet disinfection device, L/min;
Ak-- coffee liquid 25 4nm UV absorbance.
B.4.6 B.3 calculated according to the formula test microorganism solution injection speed, according to the results of microbial injection test solution, the whole process of keeping the test
Test organisms influent concentration constant.
Qn
qw
'= (B.3)
Where:
qw-- microbial solution is injected into the water rate, L/min;
The concentration of microorganisms n-- dosing jar, a/L;
N '- the expected concentration of microorganisms in water UV disinfection device, a/L.
B.4.7 water after UV transmittance and stable until the microorganism concentration (plus coffee from a volume of water at the outlet to more than three times the amount of water)
Respectively inlet and outlet with a sterile sampling bottle to take three parts of one to one 500 ml sample. Export samples must be imported after sampling water
After sterilization chamber from the inlet to the outlet and then take time. 3 parts corresponding to the number of samples should be analyzed and tested for microbial ultraviolet transmittance
T254.
B.4.8 readjust the water flow to the next test point B.4.5 ~ B.4.7 repeat the procedure until all the tests each flow setpoint End
to make.
B.4.9 each sample should be sent to laboratory analysis within 1h. It failed to reach the laboratory sample shall be placed in ice and keep them without
Pollution samples and sent to the laboratory for analysis after the end of the trial today. Detection of microorganisms and microbial removal efficiency calculated by reference to the number attached
Record A.
B.4.10 test should be a detailed record of the test procedure, sample number, flow rate, UV lamp power, model, lamp and lamp spacing and number of test
Situations arise.
B.4.11 To avoid ultraviolet radiation on the human body injury during the test and should wear UV protective glasses.
B.5 Data Processing
B.5.1 Traffic - biometric dose curve
The removal of several comparative UV dose by the same microorganism measured test microorganism obtained by the above test - response curves (attached
Record A), the number of test organisms for removal into doses, UV dose obtained at this time is the biological verification dose. With the corresponding
Water flow and biological verification dose obtained by plotting the single flow tube processing - biometric dose curve B.2.
Flow/L/min · Light
/ M
J /
cm
Figure B.2 water flow - biometric dose curve
Figure B.2 abscissa of traffic means single UV lamp handle the traffic, units of L/(min · lights); ordinate biological verification dose,
Units of mJ/cm2.
B.5.2 safe biological dose calculation verification
To ensure that the effect of UV disinfection, UV disinfection device design should consider aging and UV lamp casing fouling situation can real
Now biological verification dose, namely secure biometric verification dose, the product and the aging factor and scaling factor called safety factor. Biological safety test
Certificate doses may be calculated by the formula B.4:
ED = ND × CAQ (B.4)
Where:
ED-- secure biometric verification dose, mJ/cm2;
Under ND-- new UV lamp UV disinfection device status verification biological dose, mJ/cm2;
CAQ-- safety factor (CAQ = CLH × CJG).
ED for engineering design UV disinfection device, ensure that students in the case of UV lamp sleeve fouling and aging UV disinfection device
We were able to verify the dose to meet the design requirements.
Single lamp handle traffic/L/(min · lamp)
Appendix C
(Normative)
UV and UV efficiency calculation Power Test
C.1 Scope
This method is suitable for single wavelength output straight low pressure mercury lamp and high-strength low-pressure UV lamps and UV test power efficiency calculation.
C.2 Test Principle
The UV lamp UV intensity probe on the vertical line (Figure C.1), detection UV intensity, calculated according to the formula C.1 ultraviolet
power.
αα
2sin2
DLE
P (C.1)
Where:
P- UV power, W;
E- UV intensity probe measured UV intensity, mW/cm2;
D- UV lamp UV intensity probe to distance from the center, m;
L- UV arc lamp that lights at both ends of the filament distance, m;
Half angle α- UV intensity probe and UV lamp arc length, rad.
Figure C.1 UV intensity test schematic
Angle between the probe and the UV intensity UV lamp with an arc length of the probe to the change in the distance 2α UV wick D varies, since the probe is provided
Features meter structure, different angle has different effects on the response of the probe, so to test UV intensity at different distances until you find
Suitable test distance (usually test distance D = L/2 ~ 4L), so that the test get ultraviolet power P is no longer with the probe and the UV lamp
Increasing distance increases.
C.3 test equipment and test requirements
C.3.1 Test Instruments
C.3.1.1 ultraviolet radiation intensity meter and 254 nm UV intensity probe (referred to as the UV intensity probe).
C.3.1.2 measured indoor temperature with a thermometer.
C.3.1.3 side of the indoor humidity with a hygrometer.
C.3.2 Test Requirements
C.3.2.1 testing room without air flow, and does not reflect ultraviolet light. UV lamp should be placed.
C.3.2.2 Test procedure should avoid ultraviolet radiation to human eyes and skin.
C.4 test probe and determine the distance of the UV lamp
C.4.1 The UV lamp is placed horizontally on one side of the test room, away from the wall more than 0.5 m above the ground and 1 m, ballast and connect the power supply.
C.4.2 at 1 m in vertical height of UV lamp set on a number of test points.
C.4.3 The UV intensity probe placed in the first test point, the probe is on the surface of the photosensitive UV lamp center.
UV lamp
UV probe
C.4.4 open UV lamp, UV lamp preheated to a stable, recording UV intensity probe measured UV intensity.
C.4.5 The UV intensity probe to the second test point, the test records and UV intensity, and in turn test each test point purple
Outside strength.
C.4.6 C.1 calculated using the formula UV power.
C.4.7 to test the UV intensity probe to point distance (D) as the horizontal center of the UV lamp, UV power abscissa. when
When the measured UV power no longer increases with D test after a certain point, this distance is the minimum measuring distance Dmin. Correct
UV intensity in the same probe and the same type of ultraviolet lamp, a Dmin is fixed, after the same type as the ultraviolet lamp UV reactive
Dmin may not necessarily be re-determined time rate test.
C.5 Test Procedure
C.5.1 side of the UV lamp is placed horizontally in the test room than 0.5 m from the wall above the ground and about 1 m, ballast and connect the power supply.
C.5.2 The UV intensity probe is placed in 1 m height of the UV lamp on the vertical line from the center of the UV light Dmin, the photosensitive surface of the probe is on
UV lamp center.
C.5.3 Test record room temperature and humidity.
C.5.4 open UV lamp, record UV intensity UV lamp input power, voltage and current.
C.5.5 recorded once every 5 min UV intensity, and pay attention to record the maximum UV intensity (in this case, the peak state) until the strong ultraviolet radiation
Degree of stability (in this case, the steady state) so far.
C.5.6 again to record the test room temperature and humidity.
C.5.7 Each UV lamp tested in triplicate, averaged, calculated using the formula C.1 peak and steady-state UV lamp UV power.
C.5.8 calculated using an ultraviolet lamp UV efficiency formula C.2.
W100
× UV Power () UV efficiency (%) = UV lamp power input ()
(C.2)
Content C.6 report
C.6.1 UV lamp models, manufacturers.
C.6.2 ballast models, manufacturers.
C.6.3 ultraviolet radiation intensity UV intensity meter and probe models, manufacturers.
C.6.4 UV lamp arc.
C.6.5 UV intensity UV light from the probe to the center.
When C.6.6 test room temperature and humidity.
C.6.7 When tested the UV lamp and UV power input power.
C.6.8 UV efficiency.
Appendix D
(Normative)
UV lamp aging factor test
D.1 Principle
UV lamp UV test specified end of life power, the test result is divided by the new UV lamp power to obtain an ultraviolet lamp aging line
number. According to the formula C.1, for a fixed arc UV light, when the UV intensity UV light from the probe to the center of constant UV reactive
UV intensity is proportional to the rate. This method is by measuring the UV intensity variation interval of time, with different time measured ultraviolet intensity
Divided by the new UV lamp intensity obtained at different times of the UV lamp aging factor.
D.2 test equipment and test requirements
D.2.1 Test Instruments
D.2.1.1 ultraviolet radiation intensity meter and 254 nm UV intensity probe (referred to as the UV intensity probe).
D.2.1.2 measured indoor temperature with a thermometer.
D.2.1.3 measured indoor humidity with a hygrometer.
D.2.2 Test Requirements
D.2.2.1 test room when the test temperature shall be 25 ℃ ± 1 ℃, humidity should be less than or equal to 70%.
D.2.2.2 test room should be no air flow, and does not reflect ultraviolet light. UV lamp should be placed.
D.2.2.3 UV lamps placed horizontally on one side of the test room, away from the wall 0.5 m or more than 1 m above the ground.
D.2.2.4 testing process should avoid ultraviolet radiation to human eyes and skin.
D.3 Test Procedure
D.3.1 D.2.2.3 new UV lamp according to the requirements placed, connected to a rectifier and power, turn the UV lamp operation 100 h, test the new lamp UV intensity.
D.3.2 When tested for UV lamp arc length less than 1m, and UV intensity probe is placed at 1 m from the ultraviolet lamps; arc length greater than 1 for
m UV lamp, UV intensity probe is placed at 2 m away from the UV lamp. Probe on the normal line UV lamp arc center height from the ground
UV lamp with the same height from the ground, the photosensitive surface facing the arc center.
D.3.3 Turn UV lamp, UV lamp until stable, record the UV intensity.
D.3.4 UV lamp after every 2000 h test UV intensity, step with D.3.2 and D.3.3. Note that the UV lamp to be closed after every 12 h 15
min.
D.3.5 time as the abscissa the ratio measured at different times with the new UV intensity UV light intensity (ie power ratio) for the vertical
Coordinates obtained by plotting the time-varying UV aging coefficient curve.
Appendix E
(Normative)
Quartz tube ultraviolet transmittance test
E.1 Principle
Testing quartz tube ultraviolet transmittance of the ultraviolet is incident from one end of the quartz tube, quartz tube being emitted from the other end opposite
Out, when measured through the ratio of ultraviolet UV intensity UV intensity measured before the quartz tube, namely the double wall purple quartz sleeve
Outside transmittance, ultraviolet transmittance quartz casing wall double open square, to obtain the quartz sleeve transmission.
E.2 Test Equipment
UV-visible spectrophotometer.
E.3 Test procedure
E.3.1 The quartz tube cut 3 cm ~ 5 cm long, neat edge of the small pieces, and wipe clean-cut quartz tube surface.
E.3.2 open photometer and adjusted to test transmission gear, the test wavelength adjusted to 254 nm, 20 min warm-up until the photometer is stable.
E.3.3 with opaque objects block the light path adjusting photometric transmittance of "0" to remove the shading object, adjust photometer transmittance was "100%."
Repeat the above steps until the "0" and "100%" stable.
E.3.4 The good cut quartz tube into photometer sample test chamber, the test should be perpendicular to the light beam passes through the center of the quartz tube, read the transmittance,
The transmission rate is double wall quartz sleeve.
Calculation E.4 quartz tube ultraviolet transmittance
Calculated according to the formula E.1 quartz sleeve UV transmittance:
T ⋅ = (E.1)
Where:
T254-- quartz tube ultraviolet transmittance, expressed as a percentage;
T '- Double transmittance quartz casing wall photometer reading in%.
   
 
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