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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 15892-2009 Poly aluminium chloride for treatment of drinking water and the following main technical changes have been made with respect to GB 15892-2009:
——The indexes of polyaluminium chloride for treatment of drinking water (see Table 1; Table 1 of Edition 2009);
——The determination of iron content is added (see 6.7);
——The arsenic stain method used in determination of arsenic content is modified to atomic fluorescence spectrometry (see 6.8.1; 5.6.2 of Edition 2009);
——The flame atomic absorption spectrometry is added for the determination of lead content and of cadmium content (see 6.9.2 and 6.10.2).
——The spectrophotometry for determination of mercury content is modified as atomic fluorescence spectrometry (see 6.11.1; 5.9.1 of Edition 2009);
——The determination of hexavalent chromium content is deleted (see 5.11 of Edition 2009);
——The determination of chromium content is added (see 6.12);
This standard was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
The previous editions of this standard are as follows:
——GB 15892-1995, GB 15892-2003 and GB 15892-2009.
Polyaluminium chloride for treatment of drinking water
Warning——Strong acids and alkalis used in this standard are corrosive, so inhalation or contact with skin shall be avoided when using them. Flush with plenty of water immediately when splashed on the body, and seek medical attention immediately when serious.
1 Scope
This standard specifies requirements, test methods, inspection rules as well as marking, packaging, transport and storage of polyaluminium chloride for treatment of drinking water.
This standard is applicable to polyaluminium chloride for treatment of drinking water, which is mainly used for purification of drinking water.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 320 Synthetic hydrochloric acid for industrial use
GB/T 601 Chemical reagent—Preparations of reference titration solutions
GB/T 602 Chemical reagent—Preparations of standard solutions for impurity
GB/T 603 Chemical reagent—Preparations of reagent solutions for use in test methods
GB/T 610-2008 Chemical reagent - General method for the determination of arsenic
GB/T 4294 Aluminium hydroxide
GB/T 6678 General principles for sampling chemical products
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 8946 General technical requirements of plastic woven sack
GB/T 22596 Water treatment chemicals - General method for determination of iron content
3 Molecular formula
Aln(OH)mCl(3n-m) 0
Foreword i
1 Scope
2 Normative references
3 Molecular formula
4 Product classification
5 Requirements
5.1 Raw material requirements
5.2 Technical requirements
6 Test method
6.1 General
6.2 Determination of aluminum oxide (Al2O3)
6.3 Determination of basicity
6.4 Determination of density
6.5 Determination of insoluble matter content
6.6 Determination of pH value
6.7 Determination of iron content
6.8 Determination of arsenic content
6.9 Determination of lead content
6.10 Determination of cadmium content
6.11 Determination of mercury content
6.12 Determination of chromium content
7 Inspection rules
8 Marking, packaging, transport and storage
Annex A (Informative) Determination of coagulation performance
