GB/T 17218-2025Hygienic safety evaluation of chemicals used in drinking water treatment (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

This document supersedes GB/T 17218-1998 "Hygienic Safety Evaluation of Chemical Treatment Agents for Drinking Water" and is consistent with GB/T 17218-1998.

Aside from structural adjustments and editorial changes, the main technical changes are as follows.

a) The scope of the document has been changed (see Chapter 1, Chapter 1 of the 1998 edition);

b) Added terms and definitions (see Chapter 3);

c) The metal indicators antimony, barium, beryllium, thallium, and copper have been added (see 4.2.1);

d) Limits for copper, total chromium, dimethyldiallyl ammonium chloride, and maleic acid have been added (see 4.2.2);

e) The procedures for sample collection and preservation have been changed (see 5.1, A1 of the 1998 edition);

f) Sample collection information has been added (see 5.1);

g) The method for collecting packaging samples has been changed (see 5.1.1.2, A1.1.1.2 of the 1998 edition);

h) The sample size for sample preparation and the sample pretreatment method have been changed (see 5.2.2, A2.2 of the 1998 edition);

i) The formulation of polydimethyldiallylammonium chloride, acrylate-2-acrylamide-2-methylpropanesulfonic acid copolymer and polymaleic acid were added. Method (see 5.2.2);

j) Fifty-five new chemical treatment agents for drinking water have been added (see Table A.1);

k) Cationic polyacrylamide was removed (see Table A1 in the 1998 edition);

l) The evaluation dosage of aluminum-containing coagulants has been changed (see Table A.1, Table A1 of the 1998 edition);

m) The toxicological safety assessment classification, test content, and result evaluation were revised (see Appendix B, Appendix B of the 1998 edition);

n) A method for detecting maleic acid in water has been added (see Appendix C).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the National Center for Disease Control and Prevention.

This document was drafted by. the National Institute for Environmental Health and Related Product Safety, Chinese Center for Disease Control and Prevention; and the Jiangsu Provincial Center for Disease Control and Prevention.

(Jiangsu Academy of Preventive Medicine), Shanghai Municipal Center for Disease Control and Prevention (Shanghai Academy of Preventive Medicine), Zhejiang Provincial Health Monitoring and...

Evaluation Center, Hunan Provincial Health and Family Planning Comprehensive Supervision Bureau.

The main drafters of this document are: Hu Xiaojian, Zhu Ying, Wang Chao, Zhang Miao, Lin Shaobin, Ji Wenliang, Zhang Yun, Su Yi, Shen Tu Hang, and Cao Zhaohui.

This document was first published in 1998, and this is its first revision.

1 Scope

This document specifies the hygiene and safety requirements for chemical treatment agents for drinking water and describes the corresponding testing methods.

This document applies to applications such as coagulation, flocculation, reduction, pH adjustment, scale inhibition, fluorination, disinfection, oxidation, softening, algae removal, defluorination, and dechlorination.

Hygiene and safety evaluation of chemical treatment agents for drinking water.

2 Normative references

GB 5749

GB/T 5750

GB/T 6682

GB/T 33085

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Hygiene and safety requirements

Appendix A ;

b) When a specific substance introduced into drinking water by chemical treatment agents is a substance specified in GB 5749, the limit value of that substance shall be specified.

It should be 10% of the limit specified in GB 5749, except for specific substances that are otherwise specified;

c) When specific substances introduced into drinking water by chemical treatment agents are not specified in GB 5749, relevant domestic and international standards shall apply.

For accurate determination, the limit for this substance should be 10% of the limit in relevant domestic and international standards, except for specific substances as otherwise specified.

d) If there is no basis to determine the limit for a specific substance introduced into drinking water by chemical treatment agents, the limit shall be determined according to Appendix B.

The maximum permissible concentration of a substance in drinking water shall be limited to 10% of the maximum permissible concentration.

e) The limit for copper is 0.2 mg/L, the limit for total chromium is 0.01 mg/L, and the limit for dimethyl diallyl ammonium chloride monomer is [missing value].

The limit for maleic acid is 0.05 mg/L, and the limit for maleic acid is 0.07 mg/L.

5 Test methods