GB/T 18920-2020_English: PDF (GB/T18920-2020)
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The reuse of urban recycling water -- Water quality standard for urban miscellaneous use
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GB/T 18920-2020
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The reuse of urban recycling water -- Water quality standard for urban miscellaneous water consumption
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| Standard ID | GB/T 18920-2020 (GB/T18920-2020) | | Description (Translated English) | The reuse of urban recycling water -- Water quality standard for urban miscellaneous use | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P40 | | Classification of International Standard | 13.060 | | Word Count Estimation | 8,856 | | Date of Issue | 2020-03-31 | | Date of Implementation | 2021-02-01 | | Drafting Organization | China Municipal Engineering Central South Design and Research Institute Co., Ltd., China Urban Construction Research Institute Co., Ltd. | | Administrative Organization | National Technical Committee on Standardization of Urban Water Supply and Drainage (SAC/TC 434) | | Proposing organization | Ministry of Housing and Urban-Rural Development of the People's Republic of China | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | | Standard ID | GB/T 18920-2002 (GB/T18920-2002) | | Description (Translated English) | The reuse of urban recycling water - Water quality standard for urban miscellaneous water consumption | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P40 | | Classification of International Standard | 13.06 | | Word Count Estimation | 6,660 | | Date of Issue | 2002/12/20 | | Date of Implementation | 2003/5/1 | | Older Standard (superseded by this standard) | CJ/T 48-1999 | | Quoted Standard | GB/T 3181; GB/T 5750; GB/T 7488; GB/T 7489; GB/T 7494; GB/T 11898; GB/T 11913; GB/T 12997; GB/T 12998; GB/T 12999; JGJ 63 | | Drafting Organization | Central South China Municipal Engineering Design Acedemy | | Administrative Organization | Ministry of Construction of water supply and drainage products Standardization Technical Committee | | Proposing organization | Ministry of Construction of the People Republic of China | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China | | Summary | This Standard specifies urban miscellaneous water quality standards, sampling and analysis methods. This Standard is applicable to the toilet toilet flushing, cleaning roads, fire protection, urban greening, vehicle washing, construction miscellaneous water. |
GB/T 18920-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.060
P 40
Replacing GB/T 18920-2002
The reuse of urban recycling water -
Water quality standard for urban miscellaneous use
ISSUED ON: MARCH 31, 2020
IMPLEMENTED ON: FEBRUARY 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Water quality indicators ... 7
5 Sampling and monitoring ... 8
6 Safe use ... 10
The reuse of urban recycling water - Water
quality standard for urban miscellaneous use
1 Scope
This Standard specifies the terms and definitions, water quality indicators,
sampling and monitoring, safe use of water for urban miscellaneous use in the
reuse of urban recycling water.
This Standard applies to reclaimed water for miscellaneous use, such as toilet
flushing, vehicle washing, urban landscaping, street sweeping, fire protection,
construction site and concrete production.
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 5750.4 Standard examination methods for drinking water -
Organoleptic and physical parameters
GB/T 5750.5 Standard examination methods for drinking water - Nonmetal
parameters
GB/T 5750.6 Standard examination methods for drinking water - Metal
parameters
GB/T 5750.11 Standard examination methods for drinking water -
Disinfectants parameters
GB/T 5750.12 Standard examination methods for drinking water -
Microbiological parameters
GB/T 7488 Water quality - Determination of biochemical oxygen demand
after 5 days (BOD5) - Dilution and seeding method
GB/T 7489 Water quality - Determination of dissolved oxygen - Iodometric
method
GB/T 11913 Water quality - Determination of dissolved oxygen -
Reclaimed water used for toilet flushing in public and residential toilets.
3.4
urban landscaping use
Water used for gardens, parks, roadside trees and road isolation green belts,
venues and public lawns, and similar areas other than special trees and special
flowers.
3.5
street sweeping use
Reclaimed water used for road dust suppression and road sweeping.
3.6
fire protection use
Reclaimed water used for fire protection in municipal works, residential quarters
and factories.
3.7
construction site and concrete production use
Water used for soil compaction, dust suppression and concrete in construction
sites.
4 Water quality indicators
4.1 The basic control items and limits for water quality of water for urban
miscellaneous use shall meet the requirements of Table 1.
4.2 Users of water for urban miscellaneous use should select the items in Table
2 in a targeted manner according to the water source of the local reclaimed
water plant.
4.3 Water for concrete shall also comply with the relevant provisions of JGJ 63.
4.4 For water used in the automatic sprinkler fire-fighting system, in addition to
meeting the requirements of Table 1, the suspended matter shall meet the
requirements of GB 50084.
Table 1 -- Basic control items and limits of
water quality of water for urban miscellaneous use
No. Item Toilet flushing use, Urban landscaping,
......
GB/T 18920-2002
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
The Reuse of Urban Recycling Water - Water Quality
Standard for Urban Miscellaneous Water Consumption
ISSUED ON. DECEMBER 20, 2002
IMPLEMENTED ON. MAY 1, 2003
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Water Quality Indexes ... 6
5 Sampling and Analysis Methods... 7
6 Implementation and Supervision of Standard ... 8
Foreword
This standard "The Reuse of Urban Recycling Water" was developed by the Ministry
of Construction of the People's Republic of China with a view to implementing the
policy of water pollution prevention and control and water resource development of
China, improving the water utilization rate, doing the urban water conservation work
well, rationally utilizing water resource, realizing recycling of urban sewage, reducing
the pollution of sewage on environment and promoting the sustainable development
of urban construction and economic construction.
Presently, the "The Reuse of Urban Recycling Water" is divided into five parts.
"The Reuse of Urban Recycling Water-Classified Standard"
"The Reuse of Urban Recycling Water-Water Quality Standard for Urban
Miscellaneous Water Consumption"
"The Reuse of Urban Recycling Water-Water Quality Standard for Scenic
Environment Use"
"The Reuse of Urban Recycling Water-Water Quality Standard for Make-up Water
Source"
"The Reuse of Urban Recycling Water-Water Quality Standard for Industrial Uses"
This standard is the second part.
This standard was prepared on the basis of the "Miscellaneous Domestic Water
Quality Standard" (CJ/T 48-1999); the main changes in this standard are as follows.
(1) As for the water consumption category, the miscellaneous water for
fire-fighting and miscellaneous water for building construction site was
added;
(2) As for the water quality items, the dissolved oxygen was added and the
chloride, total hardness, chemical oxygen demand and suspended matter
were deleted;
(3) The number of water quality categories was increased from 2 to 5;
(4) The water quality index value was adjusted correspondingly.
CJ/T 48-1999 shall be abolished simultaneously from the implementation date of this
standard.
This standard was proposed by the Ministry of Construction of the People's Republic
The Reuse of Urban Recycling Water - Water Quality
Standard for Urban Miscellaneous Water Consumption
1 Scope
This standard specifies the water quality standard, sampling and analysis methods of
the urban miscellaneous water consumption.
This standard is applicable to the miscellaneous water used for toilet flushing, road
cleaning, fire-fighting, urban greening, vehicle cleaning and building construction site.
2 Normative References
The following standards contain the provisions which, through reference in this text,
constitute the provisions of this standard. For dated reference, the subsequent
modification or revisions of these publications do not apply. However, all parties who
reach an agreement according to this standard are encouraged to study whether the
latest edition of these documents is applicable. For undated references, the latest
edition of the normative document is applicable to this standard.
GB/T 3181 Colour Standard for Paint Film
GB/T 5750 Standard Examination Methods for Drinking Water
GB/T 7488 Water Quality - Determination of Biochemical Oxygen Demand After 5
Days (BOD5) - Dilution and Seeding Method (neq ISO 5815)
GB/T 7489 Water Quality - Determination of Dissolved Oxygen - Iodometric Method
(neq ISO 5813-83)
GB/T 7494 Water Quality - Determination of Anionic Surfactants - Methylene Blue
Spectrophotometric Method (neq ISO 7875-1)
GB/T 11898 Water Quality - Determination of Free Chlorine and Total Chlorine -
Spectrophotometric Method Using N,N-Diethyl-1,4 Phenylenediamine (eqv ISO
7393-2)
GB/T 11913 Water Quality - Determination of Dissolved Oxygen - Electrochemical
Probe Method (idt ISO 5814-84)
GB/T 12997 Water Quality - Technical Regulation on the Design of Sampling
Programmes (idt ISO 5667/1-80(E))
GB/T 12998 Water Quality - Guidance on Sampling Techniques (neq ISO 5667/2-82)
GB/T 12999 Water Quality Sampling - Technical Regulation of the Preservation and
Handling of Samples (neq ISO 5667/3-85)
JGJ 63 Standard for Water of Mixing in Concrete
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1 Urban
The city with a municipal government or the designated town.
3.2 Urban miscellaneous water consumption
The undrinkable water used for toilet flushing, road cleaning, fire-fighting, urban
greening, vehicle cleaning and building construction site.
3.2.1 Miscellaneous water for toilet flushing
Water used for flushing the water closets in public toilets and residential toilets.
3.2.2 Miscellaneous water for road cleaning
Water used for dust control and sweeping of road.
3.2.3 Miscellaneous water for fire-fighting
Water used for municipal and community fire hydrant systems.
3.2.4 Miscellaneous water for urban greening
Water used for gardens (except those with special trees and flowers), roadside trees,
road isolation greenbelt, playgrounds, greenfields and similar areas.
3.2.5 Miscellaneous water for building construction site
Water used for the soil compaction, dust control, concrete flushing and concrete
mixing at the building construction site.
4 Water Quality Indexes
The water quality of the urban miscellaneous water shall be in accordance with those
specified in Table 1. The water used for mixing concrete shall also meet the relevant
water consumption shall meet those specified in this standard. The local or
professional standards shall not be less strict than this standard or be against this
standard.
6.3 The equipment, like pipes and water tanks, of the urban miscellaneous water
shall be coated with sky blue color (PB09) at outside and be marked with letters
"Miscellaneous Water" at prominent position in order to avoid drinking or using by
mistake.
......
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