Standard No.:	GB 13457-2025
English Name:	Discharge standard of water pollutants for slaughter and meat processing industry
Chinese Name:	屠宰及肉类加工工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
Superseding:	GB 13457-1992 Discharge standard of water pollutants for meat packing industry
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1~3 business day

GB 13457-2025 Discharge standard of water pollutants for slaughter and meat processing 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 CCS H National Standard of the People's Republic of China ‌GB 13457-2025 Replaces GB 13457-2009 Discharge standard of water pollutants for slaughter and meat processing industry 屠宰及肉类加工工业水污染物排放标准 Issue date: 2025-12-02 Implementation date: 2027-01-01 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 slaughtering and meat processing industry. This standard applies to the management of water pollutant discharge from existing pollutant discharging units in the slaughtering and meat processing industry, as well as to the environmental impact assessment of construction projects in the slaughtering and meat processing 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 pollutant discharging units engaged in natural casings processing, edible animal fat processing, and egg processing, as well as from centralized wastewater treatment facilities serving the slaughtering and meat processing industry. This standard does not apply to the management of water pollutant discharge from pollutant discharging units engaged in non-edible animal fat processing and the deep processing of livestock and poultry blood and bones. 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 engaged in slaughtering and meat processing, natural casings processing, edible animal fat processing, egg processing, as well as by centralized wastewater treatment facilities serving the slaughtering and meat processing 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 15562.1 Environmental Protection Graphic Signs — Discharge Outlet (Source) 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 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/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 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 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 1405 Technical Specification for Monitoring Point Setting at Pollutant Discharge Outlets of Pollutant Discharging Units Notice on the Technical Specifications for Discharge Outlet Signboards 3 Terms and Definitions For the purposes of this standard, the following terms and definitions apply. 3.1 slaughter and meat processing Includes livestock and poultry slaughtering and meat product processing. Livestock and poultry slaughtering includes the slaughtering of various livestock and poultry, as well as fresh meat segmentation, freezing, and other preservation activities, but excludes commercial cold storage activities. Meat product processing refers to processing various livestock, poultry meat, and their by-products into meat products. 3.2 natural casings processing The technological process of making casings for sausages and other encased products by specially processing healthy animal organs such as small intestines, large intestines, and bladders through scraping, degreasing, etc., and preserving parts thereof through salting or drying. 3.3 edible animal fat processing The technological process of rendering edible lard, tallow, sheep fat, chicken fat, or duck fat from the leaf fat, meat fat, omentum, or pure adipose tissue attached to internal organs of quarantined and inspected pigs, cattle, sheep, chickens, and ducks. 3.4 egg processing The technological process of processing poultry eggs into egg products (including cleaned eggs, liquid eggs, dried eggs, reconstituted eggs, frozen eggs, heat-coagulated eggs, etc.). 3.5 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. 3.6 centralized wastewater treatment facilities for slaughter and meat processing industry Centralized wastewater treatment facilities specifically providing wastewater treatment services for two or more pollutant discharging units engaged in slaughter and meat processing, natural casings processing, edible animal fat processing, or egg processing. 3.7 existing pollutant discharging unit An enterprise and its production facilities engaged in slaughter and meat processing, natural casings processing, edible animal fat processing, or egg processing 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 slaughter and meat processing industry. 3.8 new pollutant discharging unit Construction projects for slaughter and meat processing, natural casings processing, edible animal fat processing, egg processing industries, and centralized wastewater treatment facilities for the slaughter and meat processing 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. 3.9 direct discharge The act of a pollutant discharging unit discharging water pollutants directly into environmental water bodies.