This standard specifies farmland irrigation water quality requirements, standard implementation and sampling and monitoring methods. This standard applies to farmland irrigation water across the country that uses surface water, underground water, treated urban sewage and industrial wastewater with similar quality to urban sewage as water sources. This standard does not apply to irrigation with wastewater treated from medicines, biological products, chemical reagents, pesticides, petroleum refining, coking and organic chemicals. GB 5084-1992 Farmland Irrigation Water Quality Standard GB5084-1992 Standard download and decompression password: www.bzxz.net

UDC 628.176 : 631. 67
Z51
National Standards of the People's Republic of China
GB 5084---92
Farmland Irrigation Water Quality Standards
Standards for irrigation water guality1992-01-04 released
国
宝
家technology!
Supervision Bureau
Protection Bureau
Home Environment
Environment
1992-10-01 Implementation
Release
China National Standards of the People's Republic of China
Farmland Irrigation Water Quality Standards
Standards for irrigation water qualityGB 5084--92
replaces GB5084-85
(Environmental Protection Law of the People's Republic of China 》, prevent the pollution of soil, groundwater and agricultural products, protect human health, and maintain the development of the economy, this standard
and scope of application
content
specifies the water quality requirements for farmland irrigation. The standard implementation and sampling monitoring methods are applicable to pharmaceutical water use throughout the country with surface water, groundwater, treated urban sewage and industrial wastewater with similar quality to urban sewage. , biological products, chemical reagents, pesticides, petroleum refining, coking and organic chemicals treated wastewater for irrigation, 'Comprehensive Wastewater Discharge Standard
, Surface Water Environmental Quality Standard
Wastewater is discharged into urban sewers Water quality standards
Water quality standards for domestic miscellaneous water
According to the demand of crops, irrigation water quality is divided into three categories according to irrigated crops: K crops, such as rice, the irrigation volume is 800m/mu·year. Crops, such as wheat, corn, cotton, etc. Irrigation water volume is 300m2/mu·year. Vegetables, such as Chinese cabbage, leeks, onions, cabbage, etc. The irrigation volume varies greatly depending on the vegetable species, generally 200 to 500 depending on the water quality requirements. Must comply with the provisions of Table 1. Approved by the National Protection Bureau on 1992-01-04
Implemented on 1992-10-01
1
Serial number
1
2
3
5
h
X
10
11
12
13|| tt||14
15
16
17
18
19
20
21||tt| |22
23
24
25
26
2
item
standard value
Crop classification
Biochemical oxygen demand (BODs)
Chemical oxygen demand (CODc.)
Suspended solids
Anionic surfactant (LAS)||tt| |Kjeldahl nitrogen
Total phosphorus (in P)
Water temperature, C
pH value
Total salt content
Chloride||tt| |Sulfide
Total mercury
Total cadmium
Total arsenic
Chromium (hexavalent)
Total lead
Total||tt ||Total zinc
Total selenium
Fluoride
Cyanide
Petroleum
Volatile phenol
Benzene
Trinitroacetaldehyde
Acrolein
GB 5084-
Table 1
92
Farmland Irrigation Water Quality Standard
Water||tt ||80
work
200
150
5.0
12
5.0
1000 (non-saline-alkali soil area )
When to relax
0.05
Drought
Make
150
300
200
8.0
30
10
35
5.5~8.5bzxZ.net
2000 (saline-alkali soil area)
250
1.0| |tt||0.001
0.005
0.1
0.1
0.1
1.0
2.0
0.02||tt ||2.0 (high fluoride area)
5.0
1.0
Vegetables
mg /L
Vegetables
80||tt| | 150 | 3.0 (General area)
0.5
10
1.0
2.5
0.5
0.5
1.0||tt ||0.5
No.
27
28
29
Project
Boron
Standard value||tt| |Crop classification
Number of fecal coliforms, individuals/
Number of insect eggs, individuals
GB 5084 - 92
Continued Table 1
Water| | tt | ) 1.0
2.0
(Crops with strong tolerance to boron, such as wheat, corn, green peppers, cabbage, onions, etc.)
3.0 (strong tolerance to boron Crops, such as: rice, radish, rape, cabbage, etc.) 10000
2
4.1 In the following areas, the total salt water quality standard can be appropriately relaxed. 4.1.1 With certain water conservancy irrigation and drainage Engineering facilities can ensure certain drainage and groundwater runoff conditions in areas; 4.1.2 Areas with certain fresh water resources that can satisfy the flushing of salt content in the soil. 4.2 When this standard cannot meet local environmental protection needs, the people's governments of provinces, autonomous regions, and municipalities directly under the Central Government may supplement items not specified in this standard as local supplementary standards and report them to the environmental protection administrative department of the State Council for filing. 5 Implementation and management of standards
5.1 This standard is implemented and managed by agricultural departments at all levels, and the environmental protection department is responsible for supervision. 5.2 Irrigation shall be carried out in strict accordance with the water quality and crop irrigation quotas stipulated in this standard. 5.3 When discharging treated industrial wastewater and urban sewage into agricultural irrigation channels, it should be ensured that the water quality at the nearest irrigation water intake point downstream meets this standard.
5.4 It is strictly prohibited to use sewage to water raw vegetables and fruits. 6 Water quality monitoring
6.1 The local agricultural department is responsible for regular monitoring and evaluation of water quality, soil and agricultural products in sewage irrigation areas. 6.2 In order to ensure agricultural water safety, during irrigation in sewage irrigation areas, the sampling point should be selected at the irrigation water inlet. The standard values ??of chemical oxygen demand (COD), cyanide, trichloroacetaldehyde and acrolein are the highest values ??measured in one time, and other standard values ??refer to the average of multiple measurements during the irrigation period.
6.3 The detection and analysis methods for each item of this standard are shown in Table 2.Table 2 Farmland Irrigation Water Quality Standard Selection Analysis Method Sequence
No. 1
Project
Biochemical Oxygen Demand
(BODs)
2||tt ||3
Chemical Oxygen Demand
! (CODcr)
Suspended solids
Determination method
Dilution and inoculation method
Dichromate method
Filter method
Detection Range
mg/L
3 or more
10~800
5 or more
Note·
Interpretation
Analysis Algorithm source
GB7488
GB11914
Depending on the interference situation, select
GB10911
Use
3
|tt||5
6
8
No.
10
11
12
13||tt ||14
15
Item
Item
GB 5084-92
Continued Table 2
Measurement method
Methylene Blue Spectrophotometry
Anionic Surface Active Agent
Active Agent
(LAS)
Kjeldahl Nitrogen
Total Phosphorus
( (calculated in P)
Water temperature
pH value
Total salt content
Chloride
Sulfide
Total mercury||tt| |Total cadmium
Total monument
Chromium (hexavalent)
Concentrated sulfonic acid-potassium sulfate-copper sulfate digestion-
Distillation·Nessler colorimetry|| tt||Newton blue colorimetric method
Glass electrode method
Gravimetric method
Silver nitrate volumetric method
Nitric acid volumetric method
Use after pretreatment Para-aminodimethylbenzene
Amine photometry
Iodometric method after pretreatment
Cold atomic absorption photometry
Potassium permanganate-potassium persulfate digestion Method
Potassium permanganate-potassium persulfate digestion-double
Sulfur gland colorimetry
. Atomic absorption spectrophotometry (chelation extraction
extraction method)| |tt||Disulfide Gland Spectrophotometry
Silver Diethyldithiocarbamate
Photophotometry
Diphenylcarbazide Spectrophotometry||tt ||Detection range
mg/l
0.05~2.0
0. 05~~2. 0
0. 025 ~ 0. 6
More than 10
can be measured to less than 10
0.02~~0.8
≥1
lower detection limit
0.000 1
0. 002-~0. 04
0.001~~0.5
0. 001-0. 05
0.007~~0. 5
0. 004~~1. 0 | Calculated by
LAS
Source of analysis method
GB 7494
After pre-treatment, use the Nessler ratio Nessler colorimetric method to measure ammonia nitrogen and | |tt||The sum of organic nitrogen
The result is unfiltered water sample
After digestion treatment, measured
is the sum of dissolved and suspended
tt||Results in C\
Results in S2-
Including inorganic or organic complexes
Combined soluble and suspended
All mercury||tt ||After acid digestion, measure
the total cadmium content in the water sample
measured to be in monomer form, without
organic or organic elements
The total amount of arsenic
uses GB7479
GB 6920
GB5750
GB7468
GB7469
GB7475
GB7471|| tt||GB7485
GB7467
No.
Sequence
16
17
18
19||tt| |20
21
22
23
24
25
item
total lead
Total copper
Total zinc
Total selenium
Fluoride
Cyanide
Petroleum
Volatile phenol
Three Chloroacetaldehyde
.
GB5084
Continued Table 2
Measurement method
Atomic absorption spectrophotometry
Direct method||tt ||Chelation extraction method
Disulfide spectrophotometry
Atomic absorption spectrophotometry
Direct method
Chelation extraction method
Diethyl Sodium dithiocarbamate (copper
reagent) spectrophotometry
disulfide gland spectrophotometry
atomic absorption spectrophotometry
diaminobenzidine colorimetry Method
Fluorescence spectrophotometry
Fluorine reagent colorimetric method
Zirconium alizarin sulfonate visual colorimetric method
Ion selective electrode method
Isonicotinic acid-pyridinone colorimetry
pyridine-barbituric acid colorimetry
UV spectrophotometry
4-aminoantipyrine spectroscopy after distillation|| tt||Photometric method
(chloroform extraction method)
Gas chromatography
Carbon disulfide extraction gas chromatography
Gas chromatography
pyrazolone Photometry
92
Detection range
mg/L
0.2~10
0. 01~0. 2
0. 01~~0. 30
0.05~~5
0. 001~~0. 05
Lower detection limit 0.003
(3cm colorimetric III)|| tt||0. 02~~0. 07
(1cm colorimetric III)
0. 005-~0. 05
0. 05~~1||tt| |Lower detection limit 0.01
Lower detection limit 0.001
0.05~1.8
0. 05~2. 5
0.05~1 900
0. 004~~0. 25
0. 002~~0. 45
0.05~50
0.002~6
0.005~0. 1
0.05～12
The lowest detection value is
3×10-5 μg
0.02~5.6
ag/mL
Note
Explanation
After acid digestion, measure
the total lead content in the water sample||tt| |The total copper content of the unfiltered sample measured after digestion
,
including dissolved and suspended
measured after digestion treatment|| The total amount of zinc in the water sample of tt||
The result is calculated as F-
including all simple cyanide
compounds and most of the complex
cyanide, Excluding cyanide
Chromium compounds
Suitable for pesticides and chemical plants
Sewage determination
Suitable for determination of urban mixed sewage
Combined sewage||tt ||Source of analytical methods
GB7475
GB 7470
GB 7475
GB 7472
GB7475
GB 5750
GB 7482
GB7484
GB7486
(1), (2), (3)
GB7490
GB11937
(1) (2), (3)
order
26
27
28
No.
29
boron| |tt||Project
Acrolein
Fecal coliforms
Fly eggs
GB 5084—
92
Continued table 2
Detection range
Measurement method
Gas chromatography
Curcumin colorimetric method
Methyl imine-H acid photometric method||tt| |Multi-tube fermentation method
Filter membrane method
Tween-80 citrate buffer centrifugal sedimentation
Sedimentation egg collection method
mg/L
Minimum detectable concentration.0.1
0.02~1.0
0.03~~5. 0
Note
Explanation
The result is calculated in B||tt| |Applicable to all kinds of water samples
Note: If the national standard is not listed in the source of the analysis method, the following method is temporarily used. After the national standard method is released, the national standard will be implemented. a. Standard inspection methods for water and wastewater (15th edition), China Construction Industry Press, 1985; b. Handbook of Standard Analysis Methods for Environmental Pollution, China Environmental Science Press, 1987; c. Water and Wastewater Monitoring and Analysis Methods (Third Edition), China Environmental Science Press, 1989; d. Health and Epidemic Prevention Inspection, Shanghai Science and Technology Press, 1964. Additional notes:
This standard is proposed by the Science and Technology Standards Department of the State Environmental Protection Administration. This standard is drafted by the Environmental Protection Research and Monitoring Institute of the Ministry of Agriculture. The main drafters of this standard are Wang Derong, Cui Shuzhen, Xu Yingming, Zhao Jing, Du Daodeng, etc. The National Environmental Protection Administration is responsible for interpreting this standard. Source of analytical method
GB11934
Note a.,b.,c.
GB5750
Note d.
2
o
4
8
0
5
B
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