Standard No.:	GB 4287-2026
English Name:	Discharge standard of water pollutants for textile industry
Chinese Name:	纺织工业水污染物排放标准
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR
Issued on:	2026-06-27
Implemented on:	2026-9-1
Status:	to be valid
Superseding:	GB 4287-2012 Discharge standards of water pollutants for dyeing and finishing of textile industry GB 28936-2012 Discharge standards of water pollutants for reeling industry GB 28937-2012 Discharge standards of water pollutants for woolen textile industry GB 28938-2012 Discharge standards of water pollutants for bast and leaf fibres textile industry
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1 business day

GB 4287-2026 Discharge standard of water pollutants for textile industry 1 Scope of application This standard specifies the discharge control requirements, monitoring requirements, and supervision and management requirements of water pollutants for textile industry. This standard applies to the management of water pollutant discharge from existing pollutant discharging units and production facilities for textile industry, as well as to the environmental impact assessment of construction projects for textile industry, the design of environmental protection facilities, the acceptance inspection of completed environmental protection facilities, the issuance of pollutant discharge permits and the management of water pollutant discharge after commissioning. This standard also applies to the management of water pollutant discharge from centralized wastewater treatment facilities for textile industry. The water pollutant discharge control requirements specified in this standard apply to the direct or indirect discharge of water pollutants outside the plant boundary from pollutant discharging units, production facilities, and centralized wastewater treatment facilities for textile industry. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies For other documents that are abolished, revised or revised by new documents, the new ones shall apply to this standard. GB 15562.1 Graphical signs for environmental protection-Discharge outlet(source) GB/T 4754-2017 Industrial classification for national economic activities GB/T 7467 Water quality; Determination of chromium(6); 1.5 Diphenylcarbahydrazide spectrophotometric method GB/T 11889 Water quality - Determination of aniline compounds-Spectrophotometric method with N-(1-naphthyl) eth GB/T 11893 Water quality - Determination of total phosphorus - Ammonium molybdate spectrophotometric method GB/T 11901 Water quality - Determination of suspended substance - Gravimetric method GB/T 18916.4-2022 Norm of water intake - Part 4: Dyeing and finishing of textile industrial product GB/T 18916.14-2023 Norm of water intake - Part 14: Wool textile product GB/T 18916.20-2016 Norm of water intake - Part 20: Chemical filament yarns weaving products GB/T 18916.21-2016 Norm of water intake - Part 21: Silk production GB/T 18916.24-2016 Norm of water intake - Part 24: Long vegetable fibre production HJ/T 70 Water quality - Determination of chemical oxygen demand - Chlorine emendation method HJ 91.1 Technical specifications for wastewater monitoring HJ 195 Water quality - Determination of ammonia-nitrogen - Gas-phase molecular absorption spectrometry HJ 199 Water quality - Determination of total nitrogen - Gas-phase molecular absorption spectrometry HJ 200 Water quality - Determination of sulfide - Gas-phase molecular absorption spectrometry HJ/T 399 Water quality - Determination of the chemical oxygen demand - Fast digestion -Spectrophotometric method HJ 493 Water quality sampling-technical regulation of the preservation and handling of samples HJ 494 Water quality - Guidance on sampling techniques HJ 495 Water quality - Technical regulation on the design of sampling programmes HJ 505 Water quality - Determination of biochemical oxygen demand after 5 days (BOD5) for dilution and seeding method HJ535 Water quality - Determination of ammonia nitrogen - Nessler’s reagent spectrophotometry HJ536 Water quality - Determination of ammonia nitrogen - Salicylic acid spectrophotometry HJ 551 Water quality - Determination of chlorine dioxide and chlorite - Continuous iodometric method HJ 636 Water quality - Determination of total nitrogen - Alkaline potassium persulfate digestion UV spectrophotometric method HJ 637 Water quality - Determination of petroleum, animal fats and vegetable oils - Infrared spectrophotometry HJ 665 Water quality - Determination of ammonium nitrogen by continuous flow analysis(CFA) and Salicylic acid spectrophotometry HJ 666 Water quality - Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry HJ 667 Water quality - Determination of total nitrogen by continuous flow analysis(CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride HJ 668 Water quality-Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl) ethylene diamine dihydrochloride spectrophotometry HJ 670 Water quality - Determination of orthophosphate and total phosphorus - Continuous flow analysis(CFA) and Ammonium molybdate spectrophotometry HJ 671 Water quality - Determination of total phosphorus - Flow injection Analysis (FIA) and Ammonium molybdate spectrophotometry HJ 694 Water quality - Determination of mercury, arsenic, selenium, bismuth and antimony - Atomic fluorescence spectrometry HJ 700 Water quality - Determination of 65 elements - Inductively coupled plasma-mass spectrometry HJ 824 Water quality - Determination of sulfide - Flow injection analysis (FIA) and methylene blue spectrophotometric method HJ 828 Water quality - Determination of the chemical oxygen demand - Dichromate method HJ 879 Self-monitoring technology guidelines for pollution sources - Textile and dyeing industry HJ 908 Water quality - Determination of chromium(VI) - Flow injection analysis(FIA) and diphenylcarbazide spectrometric method HJ 1047 Water quality - Determination of antimony - Graphite furnace atomic absorption spectrometry HJ 1069 Water quality - Determination of the acute toxicity - Zebrafish (Danio rerio) eggs method HJ 1147 Water quality - Determination of pH - Electrode method HJ 1182 Water quality - Determination of colority - Dilution multiple method HJ 1214 Water quality - Determination of adsorbable organically bound halogens (AOX) - Microcoulometric method HJ 1226 Water quality - Determination of sulfide - Methylene blue spectrophotometric method HJ 1297 Technical specification for Two-dimensional code identification of pollutant discharge outlet of pollutant discharge unit HJ 1405 Technical specification for measurement site setting of pollutant discharge outlet of pollutant discharge unit HJ 1448 Water quality - Determination of ammonia nitrogen - Nessler' s reagent-portable photometric method HJ 1449 Water quality - Determination of ammonia nitrogen - Salicylic acid-portable photometric method HJ 1450 Water quality - Determination of chromium (VI)-1,5 Diphenylcarbohydrazide-portable photometric method HJ 1470 Water quality - Determination of hexavalent chromium - Ion chromatography with post-column derivatization 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1 textile industry textile industry (C17) as specified in GB/T 4754-2017, which refers to the pre‑spinning processing of cotton, wool, flax, silk, etc., spinning (silk reeling), weaving, and the dyeing, printing and finishing industry mainly based on pre‑treatment, dyeing, printing and finishing of textile materials 3 2 wool weaving production process using wool, cashmere fibre and other animal hair fibres as the main raw materials, involving scouring, top‑making, spinning and weaving Among these, scouring refers to the production process of removing grease, sweat and dirt from raw wool in water or washing liquid using chemical and mechanical methods. 3.3 linen weaving production process using ramie, flax, jute, sisal, hemp (industrial hemp), apocynum, etc., as the main raw materials, involving pre‑spinning fibre processing such as degumming, bleaching, as well as spinning and weaving 3.4 silk weaving production process using silkworm cocoons as the main raw material for reeling, and silk as the main raw material for weaving to obtain silk fabrics Among these, reeling refers to the production process of drawing silk from silkworm cocoons, through processes such as sorting and peeling, cocoon boiling, silk drawing, re‑reeling and finishing, to obtain raw silk, native silk, doupion silk and by‑products such as long spit, waste silk and silkworm chrysalis, including mulberry silk reeling and tussah silk reeling 3.5 chemical fiber weaving production process of weaving woven fabrics using chemical filament yarns as the main raw material 3.6 industrial textile products manufacturing manufacturing process for nonwovens, ropes, cords, cables, textile belts, cord fabric, awnings, canvas, etc. 3.7 dyeing, printing and finishing technological process mainly based on the chemical treatment of textile materials (fibres, yarns and fabrics), including the sections of printing, dyeing and finishing, among which printing and dyeing includes pre‑treatment (including singeing, desizing, scouring, bleaching, mercerizing, alkali deweighting and degumming, etc.), dyeing, and printing (including reactive printing, pigment printing, batik, etc.) Reactive printing refers to a printing process in which reactive dyes chemically react with the fibre material, and urea is often used as an auxiliary agent; pigment printing refers to a printing process in which pigments are directly coated onto the surface of the fibre material to form a coating layer of varying thickness; batik refers to a printing process mainly using wax as a resist agent. Finishing refers to the production process that, on the basis of pre‑treatment, dyeing and printing, improves the appearance and handle of textiles, enhances wearing performance or imparts special functions through chemical or physical methods, commonly known as post‑finishing. It mainly includes physical finishing and chemical finishing. 3.8 existing pollutant discharging unit textile industry pollutant discharging units, production facilities, and centralized textile industrial wastewater treatment facilities that have been built and put into operation, or whose environmental impact assessment documents have been approved, prior to the date of implementation of this standard 3.9 new pollutant discharging unit new construction, reconstruction and expansion projects of textile industry or centralized wastewater treatment facilities for textile industry whose environmental impact assessment documents are approved from the date of implementation of this standard 3.10 direct discharge behavior that the discharge units directly discharge water pollutants to the environmental water 3.11 indirect discharge behavior that the pollutant emission unit discharges water pollutants to centralized wastewater treatment facilities 3.12 centralized wastewater treatment facilities wastewater treatment facilities that provide wastewater treatment services to two or more pollutant discharging units, including centralized municipal wastewater treatment facilities of various scales and types, centralized wastewater treatment facilities in industrial agglomeration areas (economic and technological development zones, high-tech industrial development zones, export processing zones and other types of industrial parks), and other wastewater treatment facilities shared by two or more pollutant discharging units 3.13 centralized municipal wastewater treatment facilities centralized wastewater treatment facilities that purify wastewater entering the municipal wastewater collection system

Contents Foreword I 1 Scope of application 2 Normative references 3 Terms and definitions 4 Requirements for control of water pollutant discharge 5 Requirements for water pollutant monitoring 6 Requirements for standardization of wastewater discharge outlets 7 Implementation and supervision