GB/T 19923-2024 in English
VALIDReuse of urban recycling water—Water quality standard for industrial uses
- Issued on:2024-03-15
- Implemented on:2024-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 19923-2024城市污水再生利用 工业用水水质》由TC434（全国城镇给水排水标准化技术委员会）归口，主管部门为住房和城乡建设部。
Introduction
GB/T 19923-2024 Standard Interpretation
This standard (GB/T 19923-2024) comprehensively regulates the water quality of industrial water for the recycling of urban sewage. It is applicable to the recycled water used as raw industrial water such as indirect cooling open circulation cooling water make-up water, boiler feed water, process water and product water, direct cooling water, washing water, etc. in industrial production processes.
Water quality indicators
| Projects | Intercooler open cycle cooling water make-up water, boiler feed water, process water, product water | Direct current cooling water, washing water |
|---|---|---|
| pH | 6.0 - 9.0 | - |
| Chroma/degree | 20 | - |
| Turbidity/NTU | 5 | - |
Background of Standard Formulation and Analysis of Technological Evolution
This standard is a revision of GB/T 19923-2005, and is mainly optimized for the application needs of recycled water in the industrial field. The new version adds limit values for indicators such as total nitrogen, fluoride, and sulfide, and imposes stricter restrictions on existing indicators such as pH, chromaticity, and chemical oxygen demand (COD).
Implementation Suggestions
- It is recommended that recycled water plants select basic control items and selective control items based on user needs, and ensure that the monitoring frequency meets the requirements of Table 5.
- Anti-backflow devices should be installed in the transmission and distribution system to avoid direct contact between recycled water and drinking water.
- Encourage the use of environmentally friendly measurement methods such as ion chromatography and gas phase molecular absorption spectroscopy.
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