GB/T 33233-2023 (English Version)

Standard No.: GB/T 33233-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 33233-2023
Replace: GB/T 33233-2016

Scope: This document stipulates the evaluation index 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.

Introduction

National Standard of the People's Republic of China GB/T 33233—2023 Water-saving Enterprises in the Aluminum Electrolytic Industry

1. Overview and Scope of Application

GB/T 33233—2023 Water-saving Enterprises in the Aluminum Electrolytic Industry specifies the evaluation index system and requirements for water-saving enterprises in the aluminum electrolytic industry. The standard is applicable to the evaluation of water-saving enterprises in the aluminum electrolytic industry, and aims to achieve effective utilization and conservation of water resources through scientific management measures and technical means.

2. Comparative analysis of standard frameworks

Standard dimensions	2016 version requirements	2023 version updates
Basic requirements	Domestic water and production water are metered and paid separately	Added water use indicators for deep purification of electrolytic flue gas, emphasizing the separate metering of three waters (domestic, production, purification)
Management indicators	The management system needs to be scientific and reasonable	Added scoring requirements for water-saving technology transformation and investment, emphasizing the importance of financial and technical support
Technical indicators	Water intake per unit of electrolytic aluminum ≤ 1.0 m³/t	Optimized to: 0.8 m³/t for electrolytic aluminum liquid, 1.1 m³/t for aluminum ingots for remelting, and a new deep purification water index of 2.0 m³/t

Case Analysis: Water Saving Practice of an Electrolytic Aluminum Plant

By implementing a steam condensate recovery system and recycling process water, the plant achieved an annual water saving of approximately 500,000 tons, with the comprehensive leakage rate controlled below 6%.

3. Interpretation of Management Indicators

Management System:It is necessary to establish a scientific water-saving network and job responsibility system, formulate a water-saving plan and submit reports regularly.
Management organization:Equip full-time water-saving management personnel and clarify job responsibilities.
Pipeline network equipment management:Regularly inspect and maintain pipelines and equipment to ensure the efficient operation of the water supply and drainage system.

4. Technical Indicator Analysis

Technical Dimension	Technical Indicator	Unit	Assessment Value
Water Intake	Electrolytic Aluminum Liquid	m³/t	0.8
Reuse Rate	≥96%	%	≥96

5. Background of standard formulation and analysis of technological evolution

As the country attaches great importance to the construction of ecological civilization and water conservation, the electrolytic aluminum industry, as a high water-consuming industry, urgently needs to achieve water-saving goals through technological upgrades and management optimization. The new version of the standard responds to policy requirements, combines industry practical experience and technological progress, and updates a number of assessment indicators.

6. Implementation suggestions

Capital investment:Enterprises should allocate special funds for water conservation every year for technological transformation and equipment upgrades.
Training and publicity:Regularly carry out water-saving management training and publicity activities to improve employees' awareness of water conservation.
Monitoring and evaluation:Establish a complete water metering and monitoring system, and regularly evaluate water-saving effects.

GB/T 33233-2023 Referenced Document

GB/T 12452 General principles of water balance test
GB/T 18820 General rules for compiling industrial water quotas*， 2023-09-07 Update
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
GB/T 7119 Evaluating guide for water saving enterprises

GB/T 33233-2023 history

2023 GB/T 33233-2023 Water saving enterprises—Electrolytic aluminium industry
2016 GB/T 33233-2016 Water saving enterprises.Electrolytic aluminium industry