T/GDTEX 21-2021 The standard operating procedures for water balance testing in printing and dyeing enterprises

Scope

Scope: This document specifies the methods, procedures, evaluation of results, and main contents of the report for water balance testing in dyeing and printing enterprises. This document is applicable to guiding dyeing and printing enterprises or integrated textile enterprises in conducting water balance testing for their dyeing and printing processes. Main technical content: 5.1 Applicable scope: This document specifies the methods, procedures, evaluation of results, and report format for water balance testing in dyeing and printing enterprises. It is applicable to guiding dyeing and printing enterprises or integrated textile enterprises in conducting water balance testing for their dyeing and printing processes. 5.2 Textual framework: The main content of this standard includes seven parts: (1) Scope; (2) Normative references; (3) Terms and definitions; (4) Technical requirements; (5) Water balance diagrams and equations; (6) Water quantity testing methods; (7) Water balance testing procedures; (8) Preparation of water balance testing reports; (9) Appendix. 5.3 Technical requirements: The technical requirements propose the purpose of water balance testing and the division of water use units in dyeing and printing enterprises. - Gain a detailed understanding of the enterprise's water consumption situation, including total water consumption (including water from various sources), water reuse, water consumption, water discharge, recycled water, and leakage water. - Obtain the enterprise's water consumption indicators, including but not limited to water consumption per 10,000 yuan of output value, water consumption per 10,000 yuan of industrial added value, water consumption per unit product, and the equipped rate of water metering devices and the metering rate of water meters. - Obtain the water consumption status of the main production workshops, main production processes, or main production equipment (including various environmental protection facilities

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