Standard No.:	GB 46817-2025
English Name:	Discharge standard of water pollutants for food processing and manufacturing industry
Chinese Name:	食品加工制造业水污染物排放标准
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR;SAC
Issued on:	2025-12-02
Implemented on:	2026-1-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1~3 business day

GB 46817-2025 Discharge standard of water pollutants for food processing and manufacturing industry English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS 13.220 CCS H 57 National Standard of the People's Republic of China ‌GB 46817-2025 Discharge standard of water pollutants for food processing and manufacturing industry 食品加工制造业水污染物排放标准 Issue date: 2025-10-31 Implementation date: 2026-05-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative References 3 Terms and Definitions 4 Water Pollutant Discharge Control Requirements 5 Water Pollutant Monitoring Requirements 6 Specifications for Wastewater Discharge Outlets 7 Implementation and Supervision 1 Scope This standard specifies the control requirements, monitoring requirements, and supervision and management requirements for water pollutant discharge from the food processing and manufacturing industry. This standard applies to the management of water pollutant discharge from existing pollutant discharging units and production facilities in the food processing and manufacturing industry, as well as to the environmental impact assessment of construction projects in the food processing and manufacturing industry, the design of environmental protection facilities, the acceptance of completed environmental protection facilities, the issuance of pollutant discharge permits, and the management of water pollutant discharge after these projects are put into operation. This standard also applies to the management of water pollutant discharge from centralized wastewater treatment facilities serving the food processing and manufacturing industry. The water pollutant discharge control requirements specified in this standard apply to the direct or indirect discharge of water pollutants outside the legal boundaries by pollutant discharging units, production facilities, and centralized wastewater treatment facilities in the food processing and manufacturing industry. 2 Normative References The following documents, or the clauses cited therein, are referenced in this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including all amendments) applies. If other documents are superseded, modified, or revised by new ones, the new documents apply. GB 2718-2014 National Food Safety Standard — Fermented Soybean Paste GB 15562.1 Environmental Protection Graphic Signs — Discharge Outlet (Source) GB/T 4754-2017 Industrial Classification for National Economic Activities GB/T 11893 Water Quality — Determination of Total Phosphorus — Ammonium Molybdate Spectrophotometric Method GB/T 11901 Water Quality — Determination of Suspended Solids — Gravimetric Method HJ 51 Water Quality — Determination of Total Dissolved Solids — Gravimetric Method HJ/T 70 High Chlorine Wastewater — Determination of Chemical Oxygen Demand — Chlorine Emendation Method HJ/T 399 Water Quality — Determination of Chemical Oxygen Demand — Rapid Digestion Spectrophotometric Method HJ 493 Water Quality — Technical Regulations on Sample Preservation and Management HJ 494 Water Quality — Guidance on Sampling Techniques HJ 495 Water Quality — Technical Regulations on Sampling Program Design HJ 505 Water Quality — Determination of Biochemical Oxygen Demand (BOD₅) after 5 Days — Dilution and Inoculation Method HJ 535 Water Quality — Determination of Ammonia Nitrogen — Nessler's Reagent Spectrophotometric Method HJ 536 Water Quality — Determination of Ammonia Nitrogen — Salicylic Acid Spectrophotometric Method HJ 537 Water Quality — Determination of Ammonia Nitrogen — Distillation-Neutralization Titration Method HJ 636 Water Quality — Determination of Total Nitrogen — Alkaline Potassium Persulfate Digestion UV Spectrophotometric Method HJ 637 Water Quality — Determination of Petroleum Oils and Animal and Vegetable Oils — Infrared Spectrophotometry HJ 665 Water Quality — Determination of Ammonia Nitrogen — Continuous Flow-Salicylic Acid Spectrophotometric Method HJ 666 Water Quality — Determination of Ammonia Nitrogen — Flow Injection-Salicylic Acid Spectrophotometric Method HJ 667 Water Quality — Determination of Total Nitrogen — Continuous Flow-Hydrochloric Naphthylethylenediamine Spectrophotometric Method HJ 668 Water Quality — Determination of Total Nitrogen — Flow Injection-Hydrochloric Naphthylethylenediamine Spectrophotometric Method HJ 670 Water Quality — Determination of Phosphate and Total Phosphorus — Continuous Flow-Ammonium Molybdate Spectrophotometric Method HJ 671 Water Quality — Determination of Total Phosphorus — Flow Injection-Ammonium Molybdate Spectrophotometric Method HJ 828 Water Quality — Determination of Chemical Oxygen Demand — Dichromate Method HJ 986 Technical Guideline for Self-Monitoring of Pollutant Discharging Units — Agricultural and Sideline Food Processing Industry HJ 1147 Water Quality — Determination of pH Value — Electrode Method HJ 1182 Water Quality — Determination of Colority — Dilution Multiple Method HJ 1297 Technical Specification for QR Code Labeling of Pollutant Discharge Outlets of Pollutant Discharging Units HJ 1405 Technical Specification for Monitoring Point Setting at Pollutant Discharge Outlets of Pollutant Discharging Units Notice on the Technical Specifications for Discharge Outlet Signboards (环办〔2003〕95号) 3 Terms and Definitions For the purposes of this standard, the following terms and definitions apply. 3.1 food processing and manufacturing industry The industry involved in directly processing raw products from agriculture, forestry, animal husbandry, and fishery, such as grain milling, feed processing, vegetable oil and sugar processing, slaughtering and meat processing, aquatic product processing, processing of vegetables, fruits and nuts, etc., or processing raw materials through physical, chemical, or biotechnological means to produce finished or semi-finished products for human consumption or drinking. In this standard, it refers to the industries listed in GB/T 4754-2017: Grain Milling (C131), Feed Processing (C132), Vegetable Oil Processing (C133), Aquatic Product Processing (C136), Processing of Vegetables, Mushrooms, Fruits and Nuts (C137), Bean Product Manufacturing (C139, specifically C1392), Bakery Product Manufacturing (C141), Confectionery, Chocolate and Preserved Fruit Manufacturing (C142), Convenience Food Manufacturing (C143), Dairy Product Manufacturing (C144), Canned Food Manufacturing (C145), Soy Sauce, Vinegar, Fermented Soybean Paste Manufacturing and Tomato Product Manufacturing (C146, specifically C1462 and part of C1469), as well as Nutraceutical Food Manufacturing, Health Food Manufacturing, Frozen Beverage and Edible Ice Manufacturing (C149, specifically C1491, C1492, C1493). Herein, tomato products include tomato paste, tomato juice, tomato sauce (i.e., tomato condiment sauce), tomato dices, tomato powder and other products primarily processed from tomatoes or tomato paste, as well as canned tomatoes, canned tomato paste, and canned tomato sauce. Fermented soybean paste refers to semi-solid condiments produced primarily from grains and/or legumes through microbial fermentation as stipulated in GB 2718-2014, such as wheat paste, soybean paste, and broad bean paste. 3.2 centralized wastewater treatment facilities Wastewater treatment facilities that provide wastewater treatment services for two or more pollutant discharging units, including urban centralized wastewater treatment facilities of various scales and types, wastewater treatment facilities in industrial clusters (such as economic and technological development zones, high-tech industrial development zones, export processing zones, and other industrial parks), and other wastewater treatment facilities shared by two or more pollutant discharging units. 3.3 centralized wastewater treatment facilities for food processing and manufacturing industry Centralized wastewater treatment facilities specifically providing wastewater treatment services for two or more pollutant discharging units in the food processing and manufacturing industry. 3.4 existing pollutant discharging unit Pollutant discharging units and production facilities in the food processing and manufacturing industry that were built and put into operation before the date of implementation of this standard, or for which the environmental impact assessment document has been approved, as well as centralized wastewater treatment facilities for the food processing and manufacturing industry. 3.5 new pollutant discharging unit Construction projects for the food processing and manufacturing industry or centralized wastewater treatment facilities for the food processing and manufacturing industry that are newly built, reconstructed, or expanded, for which the environmental impact assessment document is approved on or after the date of implementation of this standard. 3.6 direct discharge The act of a pollutant discharging unit discharging water pollutants directly into environmental water bodies. 3.7 indirect discharge The act of a pollutant discharging unit discharging water pollutants into centralized wastewater treatment facilities. 3.8 effluent volume The volume of wastewater discharged by a pollutant discharging unit or production facility beyond its legal boundaries, including various types of discharged wastewater directly or indirectly related to production (such as process wastewater, domestic wastewater from production areas within the plant, cooling wastewater, boiler and power station drainage within the plant, etc., excluding once-through cooling water and domestic wastewater from residential areas for plant employees within the plant). 3.9 benchmark effluent volume per unit product The upper limit of effluent volume per unit product produced, stipulated for the purpose of verifying water pollutant discharge concentrations. 4 Water Pollutant Discharge Control Requirements 4.1 New pollutant discharging units shall comply with the water pollutant discharge limits and other pollution control requirements specified in Table 1 from January 1, 2026. Existing pollutant discharging units shall comply from January 1, 2028. 4.2 For indirect discharge scenarios, under the premise of not causing pipeline corrosion, sedimentation, or blockage, and provided that the influent of the centralized wastewater treatment facility meets the design treatment capacity and ensures compliant discharge, the pollutant discharging unit and the operator of the centralized wastewater treatment facility may negotiate and agree upon a concentration limit for a specific water pollutant. If this limit is verified and legally entered into the pollutant discharge permit or recorded in the pollutant discharge registration form filled out on the National Pollutant Discharge Permit Management Information Platform, then this limit shall serve as the indirect discharge limit. Table 1 Water Pollutant Discharge Limits