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GB/T 30306-2013 (GB/T30306-2013)

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GB/T 30306-2013: PDF in English (GBT 30306-2013)

GB/T 30306-2013
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.030
Y 60
Household and similar purposes
drinking water purification core
ISSUED ON: DECEMBER 31, 2013
IMPLEMENTED ON: AUGUST 01, 2014
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Classification and naming ... 8 
5 Technical requirements ... 9 
6 Test methods ... 11 
7 Inspection rules ... 14 
8 Marking, packaging, transportation, storage ... 16 
Appendix A (Informative) Test device ... 18 
Appendix B (Informative) Test method for flux and desalination rate of
nanofiltration and reverse osmosis membrane core ... 19 
Household and similar purposes
drinking water purification core
1 Scope
This standard specifies the terms and definitions, classification and naming,
technical requirements, test methods, inspection rules and marking, packaging,
transportation and storage of household and similar purpose drinking water
treatment cores.
This standard applies to household and similar purpose drinking water
treatment cores (hereinafter referred to as “drinking water treatment core”).
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1019 General requirements for the package of household and similar
electrical appliances
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2829 Sampling procedures and tables for periodic inspection by
attributes (Apply to inspection of process stability)
GB 4706.1 Safety of household and similar electrical appliances - Part 1:
General requirements
GB 5749 Standards for drinking water quality
GB/T 5750.1 ~ 5750.13-2006 Standard examination methods for drinking
water
GB 8537 National food safety standard - Drinking natural mineral water
3.5
Microfiltration
The process of using pressure as a driving force to separate particles within
0.1 μm ~ 1 μm, abbreviated as MF.
3.6
Ultrafiltration
The physical screening process of using the pressure difference as a driving
force to separate a molecular weight which ranges from several hundred to
several millions at a membrane pore size of about 0.001 μm ~ 0.2 μm,
abbreviated as UF.
3.7
Nanofiltration
The membrane separation process of using pressure as the driving force to
remove the divalent or higher polyvalent ions as well as the organic matter
which has a molecular weight of 200 or more, abbreviated as NF.
3.8
Reverse osmosis
The process of applying an external pressure higher than the osmotic
pressure of the solution to the water inlet side of the membrane, which only
allows the water and some components in the solution to selectively
permeate, whilst the other substances are not permeable and are trapped
on the surface of the membrane, abbreviated as RO.
3.9
Rate of rejection
The mass ratio of the specific component as retained by the core of
membrane to the total mass of this component in the solution.
3.10
Mineralization
The process of adding one or several mineral components beneficial to the
human body to the water.
3.11
3.18
Purified water flow rate
Under the specified operating conditions, the amount of water produced per
nominal unit time of the manufacturer, expressed in liters per hour (L/h).
3.19
Total production capacity
Under the specified operating conditions, when the effluent quality of the
drinking water treatment device meets the requirements and the purified
water flow rate is not less than the nominal purified water flow rate, the
accumulated water production when any of the purification units are
regenerated or replaced, in liters (L).
4 Classification and naming
4.1 Classification
It is classified as follows according to the principle of water treatment:
a) Coarse filter core (CX): The core with coarse filter function, including the
core which uses quartz sand, anthracite, natural manganese sand,
ceramic, PP cotton, etc. as the filter material.
b) Membrane core (MX): The core mainly composed of membrane elements,
including microfiltration (MF) core, ultrafiltration (UF) core, nanofiltration
(NF) core, reverse osmosis (RO) core, etc.
c) Adsorption core (XX): The core with adsorption function, including the core
which uses granular activated carbon (GAC), solid activated carbon (SAC),
fiber activated carbon (FAC), adsorption resin, ceramic particles and the
like as the filter materials.
d) Mineralized core (KX): The core with mineralization function, mainly
including the core which uses the mineralized ball (MB), medical stone
(MS) and the like as the filter materials.
e) Ion exchange core (LX): The core capable of reversible exchange with
ions in water, including the core which uses anion exchange resin or cation
exchange resin as the filter materials.
f) Composite core (FX): The core which has two or more functions.
g) Other cores (QX): Cores other than the above functions, including cores
5.3.2 The materials and components of drinking water treatment core which are
exposed to water shall comply with the requirements of GB/T 17219.
5.3.3 The hygiene safety of the core shall meet the relevant requirements of the
national health management department.
5.4 Electrical safety
The safety of the electrical part of the drinking water treatment core shall comply
with the requirements of GB 4706.1.
5.5 Performance indicators
5.5.1 Effluent quality
The effluent quality of the drinking water treatment core shall comply with the
relevant regulations of the National Health Administration of the People's
Republic of China as well as the requirements of GB 5749.
5.5.2 Requirements for coarse filter core
The quartz sand and anthracite filter used in the coarse filter core shall meet
the requirements of CJ/T 43-2005.
Natural manganese sand filter material shall meet the requirements of CJ/T
3041-1995.
The other cores shall meet the design requirements.
5.5.3 Requirements for membrane core
5.5.3.1 Requirements for microfiltration core
The pure water flux and rejection of rejection of the microfiltration core shall
meet the design requirements.
5.5.3.2 Requirements for ultrafiltration core
The pure water flux of the ultrafiltration core shall meet the design requirements,
the rate of rejection shall be ≥ 90%.
5.5.3.3 Requirements nanofiltration core
The minimum flux of the nanofiltration core shall not be lower than the nominal
value of the manufacturer. The removal rate of divalent ions is not less than
90%.
5.5.3.4 Requirements for reverse osmosis core
6.1.4 Influent water quality
According to the requirements of each test standard or design.
6.2 Appearance test
Visual inspection.
6.3 Hygiene safety test
6.3.1 The sample collection and preparation of the chemical treatment agent
for drinking water treatment core shall be carried out according to the
requirements of GB/T 17218 and relevant regulations of the national health
management department. The test method is in accordance with GB/T 5750.1
~ 5750.13-2006.
6.3.2 The materials and components of the drinking water treatment core which
are exposed to water are subjected to sample pretreatment and toxicological
evaluation according to the provisions of GB/T 17219 and relevant regulations
of the national health management department. The test method is in
accordance with GB/T 5750.1 ~ 5750.13-2006.
6.3.3 The immersion, increase limit and water sample collection procedure of
the hygiene safety test of core shall be carried out in accordance with the
relevant provisions of the national health management department. The test
method is in accordance with GB/T 5750.1 ~ 5750.13-2006.
6.4 Electrical safety test
The electrical safety of the drinking water treatment core shall be tested in
accordance with the method required by GB 4706.1.
6.5 Test of use performance
6.5.1 Test of effluent water quality
The test indexes and sampling methods of the purified water quality of the core
shall be implemented in accordance with the relevant provisions of the national
health management department.
The test methods are all in accordance with GB/T 5750.1 ~ 5750.13-2006.
6.5.2 Test of coarse filter core
The quartz sand and anthracite used in the coarse filter core shall be tested in
accordance with the provisions of CJ/T 43-2005; the other cores shall be carried
out in accordance with the relevant provisions of the national health
management department.
Table 3 -- Sampling scheme
Judgement
level
Sampling
scheme
Sample
size
Rejected quality level
Category-A
RQL = 30
Category-B
RQL = 65
Category-C
RQL = 100
Ac Re Ac Re Ac Re
I One n - 3 0 1 1 2 2 3
8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 The drinking water treatment core shall be provided with a label, which
shall be marked with at least the following contents:
a) Product name, specification, model;
b) Name of manufacturer;
c) Product number or date of manufacture;
d) Total production capacity, purified water flow rate, working pressure;
e) Implemented standard number, health administrative license number.
8.1.2 The drinking water treatment core through which the flow direction of
water likely causes confusion shall be marked of the direction of the water inflow
and water outflow.
8.2 Packaging
8.2.1 Packaging and transportation pictorial signs shall comply with GB/T 191.
8.2.2 The packaging of drinking water treatment core shall adopt the necessary
sealing measures and meet the requirements of GB/T 1019.
8.2.3 The outer surface of the product’s packaging box shall at least clearly
indicate the following:
a) Product name, specification, model;
b) Name and address of manufacturer;
c) Gross weight;
d) Dimensions of packaging box (length × width × height).
8.2.4 The following technical documents shall be attached in the packaging box:
Where:
R - Desalination rate, %;
Cf - The salt content of the influent, in mg/L;
Cp -The salt content of permeable water, in mg/L.
b) Measurement method of conductivity
Conductivity measurement is using the conductivity meter to respectively
determine the influent’s conductivity and permeable water’s conductivity.
Then use the formula (B.2) to make calculation. Retain two significant
figures:
Where:
R - Desalination rate, %;
C1 -Conductivity of influent, in μs/cm;
C2 - Conductivity of permeable water, in μs/cm.
B.5.2 The flux of the nanofiltration membrane and the reverse osmosis
membrane core may be calculated by one of two methods:
a) Calculation method under the test conditions of standard test temperature
(25 °C) (arbitration method)
Use the formula (B.3) to make calculation. Retain two significant figures:
Where:
F - Flux, in m3/(m2 • h);
V - Volume of permeable water which is collected in t minutes, in m3;
A -The effective area of the membrane element, in m2;
t - The time taken to collect the permeable water, in min.
b) Calculation method under the test conditions of non-standard test
temperature
......
 
(Above excerpt was released on 2019-04-14, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT30306-2013