GB/T 41018-2021Water reuse guidelines—Reclaimed water classification (English PDF)
水回用导则 再生水分级
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2021
Implementation date
July 1, 2022
Scope
GB/T 41018-2021 is the English-translated version of 水回用导则 再生水分级.
GB/T 41018-2021 is the Chinese national guideline for classifying reclaimed water, meaning water recovered from urban sewage.
It gives the classification scheme and the terms it relies on, such as secondary, tertiary and advanced treatment, and it draws on the existing water quality standards for uses such as urban miscellaneous water, landscape water, groundwater recharge, industrial and boiler water, farmland and green space irrigation and electronic grade water.
It is meant to be used in urban reclaimed water allocation planning, safety management, benefit evaluation, statistics and identification of reclaimed water, so that planners, utilities and regulators describe the same water in the same way. It was issued on 31 December 2021 and has applied since 1 July 2022.
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Document preview — GB/T 41018-2021
National Standard of the People's Republic of China
- ICS
- 13.030.20
- Classification
- Z 05
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.
1 Scope
This document specifies the classification of reclaimed water using urban sewage as the water source.
This document is applicable to the classification of reclaimed water in urban reclaimed water allocation planning, safety management, benefit evaluation, reclaimed water statistics and identification, etc.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
GB/T 1576 Industrial Boiler Water Quality
GB 5084 Farmland Irrigation Water Quality Standard
GB/T 11446.1 Electronic Grade Water
GB/T 12145 Thermal Power Generating Sets and Steam Power Equipment Water Vapor Quality
GB/T 18920 Urban Wastewater Recycling and Utilization of Urban Miscellaneous Water Quality
GB/T 18921 Urban Sewage Recycling Water Quality for Landscape Environment
GB/T 19772 Urban sewage recycling and utilization of groundwater recharge water quality
GB/T 19923 Urban Wastewater Recycling Industrial Water Quality
GB 20922 Urban Wastewater Recycling Water Quality for Farmland Irrigation
GB/T 25499 Urban Sewage Recycling and Utilization of Green Space Irrigation Water Quality
GB/T 50125 Standard for Basic Terminology of Water Supply and Drainage Engineering
3 Terms and Definitions
GB/T 50125 and the following terms and definitions apply to this document.
3.1 Secondary treatment
After primary treatment of sewage, biological methods are used to further remove colloids and dissolved organic matter in sewage. [Source: GB/T 50125-2010, 2.0.80]
Note: Primary treatment refers to the process of removing suspended solids from sewage by sedimentation.
3.2 Tertiary treatment
After the secondary treatment of sewage, the relevant process is used to further remove the target pollutants. [Source: GB/T 50125-2010, 2.0.81, with modifications]
3.3 Advanced treatment
In order to meet the specific requirements of users, on the basis of tertiary treatment, inorganic ions, trace toxic and harmful pollutants and general solvents are further strengthened. Water purification process for the removal of degradable organic pollutants.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 1576Water quality for industrial boilers
- GB 5084Standard for irrigation water quality
- GB/T 11446.1Electronic grade water
- GB/T 12145Quality criterion of water and steam for power plant and steam-generating equipment
- GB/T 18920The reuse of urban recycling water—Water quality standard for urban miscellaneous use
- GB/T 18921The reuse of urban recycling water - Water quality standard for scenic environment use
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Related Standards
GB 20922-2007 — The reuse of urban recycling water - Quality of farmland irrigation water
GB 5084-2021 — Standard for irrigation water quality
GB 50840-2012 — Code for construction and acceptance of slurry pipeline engineering
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