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
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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 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.