GB/T 25499-2010 PDF English
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The reuse of urban recycling water - Water quality standard for green space irrigation
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GB/T 25499-2010: PDF in English (GBT 25499-2010) GB/T 25499-2010
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 13.060
P 40
The reuse of urban recycling water –
Water quality standard for green space irrigation
ISSUED ON. DECEMBER 1, 2010
IMPLEMENTED ON. SEPTEMBER 1, 2011
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 7
4 Water quality requirements ... 7
5 Other provisions ... 9
6 Sampling and monitoring ... 9
Bibliography ... 13
Foreword
This Standard is one of series of standards of “the reuse of urban recycling
water”.
This Standard was proposed by Ministry of Housing and Urban-Rural
Development of the People's Republic of China.
This Standard shall be under the jurisdiction of Ministry of Housing and
Urban-Rural Development Water Supply and Drainage Products
Standardization Technical Committee.
Main drafting organizations of this Standard. Beijing Forestry University,
China Institute of Standardization, Beijing Lakers Irrigation Equipment Co.,
Ltd., Beijing Urban Drainage Group Co., Ltd.
Main drafters of this Standard. Chang Zhihui, Li Aixian, Han Liebao, Bai Xue,
Su Derong, Zhou Jun, Yin Shuxia, Jin Minghong, Feng Daming, Wang
Changjun, Lv Lu.
The reuse of urban recycling water –
Water quality standard for green space irrigation
1 Scope
This Standard specifies the water quality indicators and limits, sampling and
monitoring for green space irrigation of reuse of urban recycling water.
This Standard is applicable to the recycled water used for green space
irrigation that takes the urban recycling water as water source.
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 (all parts), Standard examination methods for drinking water
GB/T 6920, Water quality - Determination of pH value - Glass electrode
method
GB/T 7467, Water quality - Determination of chromium(6) - 1.5
Diphenylcarbahydrazide spectrophotometric method
GB/T 7468, Water quality - Determination of total mercury - Cold atomic
absorption spectrophotometry
GB/T 7470, Water quality - Determination of lead - Spectrophotometric
method with dithizone
GB/T 7471, Water quality - Determination of cadmium -
Spectrophotometric method with dithizone
GB/T 7472, Water quality - Determination of zinc - Spectrophotometric
method with dithizone
GB/T 7473, Water quality - Determination of copper -
2,9-Dimethyl-1,10-phenanthroline spectrophotometric method
GB/T 7474, Water quality - Determination of copper - Sodium
diethyldithiocarbamate spectrophotometric method
GB/T 7475, Water quality - Determination of copper, zinc, lead and
cadmium - Atomic absorption spectrometry
GB/T 7476, Water quality - Determination of calcium - EDTA titrimetric
method
GB/T 7479, Water quality - Determination of ammonium - Nessler’s
reagent colorimetric method
GB/T 7481, Water quality - Determination of ammonium -
Spectrophotometric method with salicylic acid
GB/T 7483, Water quality - Determination of fluoride; Fluor reagent
spectrophotometric method
GB/T 7484, Water quality - Determination of fluoride - ion selective
electrode method
GB/T 7485, Water quality - Determination of total arsenic - Silver
diethyldithiocarbamate spectrophotometric method
GB/T 7486, Water quality - Determination of cyanide - Part 1.
Determination of total cyanide
GB/T 7487, Water quality - Determination of cyanide - Part 2.
Determination of cyanide
GB/T 7488, Water quality - Determination of biochemical oxygen demand
after 5 days (BOD5) - Dilution and seeding method
GB/T 7494, Water quality - Determination of anionic surfactants -
Methylene blue spectrophotometric method
GB 7959, Sanitary Standard for the non-hazardous treatment of night soil
GB/T 8538, Methods for examination of drinking natural mineral water
GB/T 11890, Water quality - Determination of benzene and its analogies -
Gas chromatographic method
GB/T 11896, Water quality - Determination of chloride - Silver nitrate
titration method
GB/T 11898, Water quality - Determination of free chlorine and total
chlorine - Spectrophotometric method using N,N-diethyl-1,4
phenylenediamine
22 Benzene ≤2.5
NOTE Except item 1, the unit for other items shall be mg/L.
a , where the concentration units for sodium, calcium, magnesium ion are
expressed in mmol/L.
5 Other provisions
5.1 Before the irrigation of urban recycling water to green space, the basic
control projects and selective control projects of the recycling water sources
shall be fully tested. Carry out the irrigation test according to local climatic
conditions, green plant species and soil conditions to confirm the selective
control items and irrigation system.
5.2 Ancient trees must not be irrigated with the recycling water. Special
flowers and newly introduced plants shall be carefully irrigated with the
recycling water.
5.3 When using the recycling water to irrigate the green space, an
emergency preparation plan shall be made. When an emergency occurs,
stop using the recycling water immediately.
6 Sampling and monitoring
6.1 Sampling requirements
6.1.1 The sampling point of the water quality is located near the discharge
port of the recycling water treatment facility to ensure that the nearest
irrigation water quality comply with the provisions of this Standard.
6.1.2 The collection and storage of water sample shall be in line with GB/T
12998 and GB/T 12999. Conduct the sampling at least once every 2h. Take
24 mixed samples, calculated in daily average. When conditions permit, the
sampling in proportion of recycling water and online monitoring shall be
gradually realized.
6.2 Monitoring frequency
When it uses the recycling water to irrigate the green space, the water quality
monitoring frequency shall not be less than the following requirements.
Basic control items. once a day for total residual chlorine, turbidity, olfactory,
pH value; once every week for fecal coliforms; once every month for other
items.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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