GB/T 33233-2023Water saving enterprises—Electrolytic aluminium industry (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

This document replaces GB/T 33233-2016 "Water saving enterprises -- Electrolytic aluminium industry". Compared with GB/T 33233-2016, in addition to the structural adjustments and editorial modifications, the main technical changes in this document are as follows:

a) Change basic requirements for water saving enterprises (see 4.2 of this Edition; 4.2 of Edition 2016);

b) Change assessment indicators for water intake. Add water indicators for deep purification of electrolysis flue gas (see 4.4 of this Edition; 4.4 of Edition 2016);

c) Change assessment indicators for reuse rate (see 4.4 of this Edition; 4.4 of Edition 2016);

d) Changed assessment indicators for water leakage rate (see 4.4 of this Edition; 4.4 of Edition 2016);

e) Change the scoring instructions for water saving enterprise management indicators (see A.2 of this Edition; A.2 of Edition 2016).

1 Scope

This document specifies the evaluation indicator system and requirements for the evaluation of water saving enterprises in the electrolytic aluminum industry.

This document is applicable to the evaluation of water saving enterprises in the electrolytic aluminum industry.

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 7119, Evaluating guide for water saving enterprises

GB/T 12452, General principles of water balance test

GB/T 18820, General principles of drafting norm of water intake for industry

GB/T 18916.16, Norm of water intake -- Part 16: Electrolytic aluminum

GB/T 21534, Water saving -- Terminology

GB/T 24789, General rules for equipping and managing of the water measuring instrument in water-use organization

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 7119, GB/T 18820, GB/T 18916.16 and GB/T 21534 as well as the followings apply.

4 Evaluation indicator system and requirements

4.1 The evaluation indicator system for water saving enterprises includes basic requirements, management indicators and technical indicators.

4.2 The basic requirements for water saving enterprises are shown in Table 1.

4.3 The management indicators and requirements of water saving enterprises are shown […]