GB/T 30306-2013Household and similar purposes drinking water purification core (English PDF)

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

8.1 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

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