GBJ 48-1983 Hospital Wastewater Discharge Standard GBJ48-83 GBJ48-1983 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Hospital Wastewater Discharge Standard
(Trial Implementation)
Beijing, 1983
National Standard of the People's Republic of China
Hospital Wastewater Discharge Standard
48-83
(Trial Implementation)
Editing Department:
Approving Department:
Trial Implementation Date:
Ministry of Health of the People's Republic of China
State Economic Commission of the People's Republic of China Ministry of Health of the People's Republic of China
June 1, 1983
Notice on Issuance of the "Hospital Wastewater Discharge Standard" Jingji [1983] No. 37
In accordance with the requirements of the former State Construction Commission (78) Jianfa Shezi No. 562 and the Ministry of Health (77) Weixuexue No. 240, the "Hospital Wastewater Discharge Standard" jointly compiled by the Ministry of Health and relevant units has been reviewed by relevant departments. The Hospital Wastewater Discharge Standard GBJ48-83 is hereby approved as a national standard, which will be implemented on a trial basis from June 1, 1983. The Ministry of Health is responsible for the management of this standard, and the Institute of Hygiene, Chinese Academy of Medical Sciences is responsible for its specific interpretation.
National Economic CommissionWww.bzxZ.net
January 12, 1983
Preparation Instructions
This standard is formulated in accordance with the task of formulating hospital wastewater discharge standards issued by the former State Construction Commission (78) Jianfa Shezi No. 562 and the Ministry of Health (77) Wei Kezi No. 240, and is compiled by the Institute of Hygiene, Chinese Academy of Medical Sciences, entrusted by our Ministry, in conjunction with relevant provincial and municipal health and epidemic prevention stations, medical schools, scientific research and architectural design units. In accordance with my country's health work policy of "prevention first" and the "Environmental Protection Law of the People's Republic of China (Trial Implementation)", this standard is specially formulated to prevent hospitals from discharging wastewater containing pathogens to pollute the environment and endanger human health. During the preparation process, a key investigation was conducted on the sewage conditions of hospitals in some provinces, cities and autonomous regions. The research groups referred to relevant standards and documents at home and abroad, conducted necessary scientific experiments, and widely solicited opinions from relevant units across the country. After many discussions and revisions, the Environmental Sanitation Subcommittee of the National Hygiene Standards Technical Committee and relevant departments reviewed and finalized the draft.
This standard is divided into four chapters, including general principles, emission standards, design requirements and management requirements, and Appendix 1, inspection methods.
In the process of trial implementation of this standard, please pay attention to accumulating information and summarizing experience. If you find that there is a need for modification and supplementation, please send your opinions and relevant information to the Institute of Hygiene, Chinese Academy of Medical Sciences, and copy it to our department for reference during revision. Ministry of Health
January 1983
Chapter 1
Chapter 2
Emission Standards
Chapter 3
Chapter 4
Appendix 1
Design Requirements·
Management Requirements
Test Methods for Hospital Sewage and Sludge
Appendix 2
Terms Used in This Standard
Chapter 1 General Provisions
Article 1.0.1 This standard is formulated to implement the health work principle of "prevention first" and the "Environmental Protection Law of the People's Republic of China (Trial Implementation)". This standard is specially formulated to prevent hospitals from discharging sewage containing pathogens to pollute the environment and endanger human health. Article 1.0.2 This standard applies to general hospitals at or above the county level, as well as specialized hospitals for intestinal infectious diseases and tuberculosis, sanatoriums, and other relevant medical and health institutions (hereinafter referred to as hospitals).
Article 1.0.3 For newly built, expanded or renovated hospitals, sewage treatment facilities must be designed, constructed and used at the same time as the main project in accordance with the provisions of this standard.
Existing hospitals should actively take effective measures to meet the requirements of this standard within a time limit.
Chapter II Discharge Standards
Article 2.0.1 After treatment and disinfection, hospital sewage should meet the following standards: 1. Take 500 ml samples for three consecutive tests, and no intestinal pathogens and tuberculosis bacteria shall be detected.
2. The total coliform count shall not exceed 500 per liter. Article 2.0.2 When chlorination method is used for disinfection, the contact time and the residual chlorine content in the effluent of the contact pool shall comply with the requirements of Table 2.02: Contact time and total residual chlorine
Hospital sewage category
General hospital sewage and sewage containing intestinal
pathogenic bacteria
Sewage containing Mycobacterium tuberculosis
Contact time (hours)
Not less than 1
Not less than 1.5
Total residual chlorine
mg/L
The sludge in the sewage treatment structure must be rendered harmless. Article 2.0.3
The sludge shall meet the following standards when discharged: 1. The mortality rate of Ascaris eggs is greater than 95%;
2. The fecal coliform value is not less than 10-2;
3. No intestinal pathogenic bacteria and Mycobacterium tuberculosis shall be detected in every 10 grams of sludge (in the original test sample).
Article 2.0.4 When sludge is harmlessly treated by high-temperature composting, the temperature of the compost must be greater than 50°C and should last for more than 5 days. Article 2.0.5 In hospitals without sewer equipment or centralized sewage treatment structures, infectious feces must be disinfected or otherwise harmlessly treated separately. Article 2.0.6
After treatment and disinfection, the content of pollutants and harmful substances contained in hospital sewage should meet the requirements of the current relevant standards. 3
Chapter 3 Design Requirements
Article 3.0.1 Hospitals should set up centralized sewage treatment structures. It is strictly forbidden to use infiltration wells and infiltration pits to discharge sewage.
The sewage from the hospital staff living area and administrative area should be separated from the sewage from the ward. Article 3.0.2

The location of the hospital sewage treatment structure should be located on the upwind side of the local minimum frequency wind direction in summer of the hospital building, and a green protection zone should be set up between the surrounding buildings.
Article 3.0.4
The design of the treatment structure should meet the following requirements: 1. Take anti-corrosion and anti-leakage measures; 2. Ensure the treatment effect, safe and durable; 3. Easy to operate, easy to disinfect and clean, and conducive to the labor protection of operators.
The design of the chlorination disinfection system should meet the following requirements: Article 3.0.5
1. Have emergency facilities in case of failure; 2. When using liquid chlorine, there should be safety facilities, and it is strictly forbidden to directly add chlorine gas to sewage with a cylinder.
Chapter 4 Management Requirements
Article 4.0.1 The hospital must strictly manage sewage and sludge. Without disinfection or harmless treatment, it is not allowed to be discharged, cleaned, or used as agricultural fertilizer. Article 4.0.2 Hospital sewage treatment facilities should be regularly maintained to ensure normal operation. When the treatment equipment fails, appropriate measures must be taken to ensure that sewage can still be discharged according to standard requirements.
Hospital sewage treatment facilities should be equipped with management personnel and inspectors. Article 4.0.3
Article 4.0.4
The monitoring of hospital sewage should meet the following requirements: 1. Residual chlorine: continuous disinfection, at least twice a day, intermittent disinfection, monitoring before each discharge;
2. Total coliform count: at least once every two weeks; 3. Infectious disease and tuberculosis hospitals should increase the detection of pathogenic bacteria as needed. Article 4.0.5 Health and epidemic prevention departments at all levels should conduct regular health supervision on the sewage and sludge treatment of hospitals within their jurisdiction, and spot checks shall not be less than twice a year. Article 4.0.6 The inspection methods of sewage and sludge shall comply with the provisions of Appendix 1. 5
Appendix 1 Methods for testing hospital sewage and sludge Method for determining total residual chlorine in sewage
I. Principle: Iodine titration method. Use iodine standard solution to back-titrate (after reacting with residual chlorine) excess sodium thiosulfate standard solution. II. Reagents:
1. 0.00564N sodium thiosulfate standard solution. (1) Prepare about 0.1N sodium thiosulfate solution: Weigh about 25g of analytical pure sodium thiosulfate (Na2S2O3·5H20) and dissolve it in boiled and cooled distilled water, dilute to 1000ml, add 0.4g sodium hydroxide or 0.2g anhydrous sodium carbonate, and store in a brown bottle. It can be stored for several months.
(2) Calibration: Weigh 0.1500 g of dry analytical grade potassium iodate (KI0:) and place it in a 250 ml conical flask, add 100 ml of distilled water, heat to dissolve, add 3 g of potassium iodide and 10 ml of glacial acetic acid, let stand for 5 minutes, add about 0.1N sodium thiosulfate solution from the burette, and shake the conical flask continuously until the color changes to light yellow; add 1 ml of starch solution, and continue to drip with sodium thiosulfate solution until it just turns colorless, and record the total amount used (if the titration is completed and left for a period of time, the solution in the conical flask will turn blue again due to oxidation due to contact with air. No further titration is required). (3) Calculation:
Number of equivalent concentration of sodium thiosulfate solution (N) 6
214·01,
0.03567XV
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