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◉ Introduction of Medical Sewage
Sewage from medical institutions refers to the diagnosis and treatment, domestic and fecal sewage discharged from outpatient clinics, wards, operating rooms, various laboratories, pathological anatomy rooms, radiology rooms, laundry rooms, mortuaries, etc. of medical institutions. It is always regarded as the sewage of medical institutions. Among them, medical institutions include hospitals, health centers, nursing homes, outpatient departments, clinics, health emergency stations, etc. engaged in disease diagnosis and treatment activities.
◉ Test Items and Standards
"Water Pollutant Discharge Standard for Medical Institutions" GB18466-2005
Water Pollutant Discharge Limits (Daily Average) for Comprehensive Medical Institutions and Other Hospital Institutions
|
Serial Number |
Control Items |
Emission Standards |
Preprocessing Standard |
|
1 |
Fecal coliform count/(MPN/L) |
500 |
5000 |
|
2 |
Enteric pathogens |
must not be detected |
- |
|
3 |
Enteroviruses |
must not be detected |
- |
|
4 |
pH |
6~9 |
6~9 |
|
5 |
Chemical oxygen demand（COD） concentration/（mg/L） Maximum allowable discharge load/[g/(Bed·d)] |
60 60 |
250 250 |
|
6 |
Biochemical oxygen demand（BOD） concentration/（mg/L） Maximum allowable discharge load/[g/(Bed·d)] |
20 20 |
100 100 |
|
7 |
Suspended solids（SS） concentration/（mg/L） Maximum allowable discharge load/[g/(bed d)] |
20 20 |
60 60 |
|
8 |
Ammonia nitrogen（mg/L） |
15 |
-- |
|
9 |
Animal and vegetable oils/（mg/L） |
5 |
20 |
|
10 |
Petro/（mg/L） |
5 |
20 |
|
11 |
Anionic surfactant/（mg/L） |
5 |
10 |
|
12 |
Color/(dilution factor） |
30 |
- |
|
13 |
Volatile phenol/（mg/L） |
0.5 |
1.0 |
|
14 |
Total cyanide/（mg/L） |
0.5 |
0.5 |
|
15 |
Total mercury/(mg/L） |
0.05 |
0.05 |
|
16 |
Total cadmium/(mg/L) |
0.1 |
0.1 |
|
17 |
Total Chromium/(mg/L) |
1.5 |
1.5 |
|
18 |
Hexavalent chromium/(mg/L） |
0.5 |
0.5 |
|
19 |
Total arsenic/(mg/L） |
0.5 |
0.5 |
|
20 |
Total lead/(mg/L) |
1.0 |
1.0 |
|
21 |
Total silver/(mg/L) |
0.5 |
0.5 |
|
22 |
Total α/(Bq/L） |
1 |
1 |
|
23 |
Total β/(Bq/L） |
10 |
10 |
|
24 |
Total residual chlorine1)2)/(mg/L) |
0.5 |
- |
|
Note: 1) The process control requirements for disinfection with chlorine-containing disinfectants are: Emission standard: the contact time of the disinfection contact pool is ≥1h, and the total residual chlorine at the outlet of the contact pool is 3-10 mg/L. Pretreatment standard: the contact time of the disinfection contact pool is ≥1h, and the total residual chlorine at the outlet of the contact pool is 2-8 mg/L. 2) The use of other disinfectants does not require total residual chlorine. |
|||
Discharge Limit of Water Pollutants in Infectious Diseases and Tuberculosis Medical Institutions (Daily Average)
|
Serial Number |
Control Items |
Standard Values |
|
1 |
Fecal coliform count/(MPN/L) |
100 |
|
2 |
Enteric pathogens |
must not be detected |
|
3 |
Enteroviruses |
must not be detected |
|
4 |
Mycobacterium tuberculosis |
must not be detected |
|
5 |
pH |
6~9 |
|
6 |
Chemical oxygen demand（COD） concentration（mg/L） Maximum allowable discharge load/[g/(bed d)] |
60 60 |
|
7 |
Biochemical oxygen demand（BOD） concentration/（mg/L） Maximum allowable discharge load/[g/(bed d)] |
20 20 |
|
8 |
Suspended solids（SS） concentration/（mg/L） Maximum allowable discharge load/[g/(bed d)] |
20 20 |
|
9 |
Ammonia nitrogen/（mg/L） |
15 |
|
10 |
Animal and vegetable oils/（mg/L） |
5 |
|
11 |
Petro/（mg/L） |
5 |
|
12 |
Anionic Surfactant/（mg/L） |
5 |
|
13 |
Color/(dilution factor) |
30 |
|
14 |
Volatile phenol/(mg/L) |
0.5 |
|
15 |
Total cyanide/(mg/L) |
0.5 |
|
16 |
Total mercury/(mg/L) |
0.05 |
|
17 |
Total cadmium/(mg/L) |
0.1 |
|
18 |
Total Chromium/(mg/L) |
1.5 |
|
19 |
Hexavalent chromium/(mg/L) |
0.5 |
|
20 |
Total arsenic/(mg/L) |
0.5 |
|
21 |
Total lead/(mg/L) |
1.0 |
|
22 |
Total silver/(mg/L) |
0.5 |
|
23 |
Total α/(Bq/L) |
1 |
|
24 |
Total β/(Bq/L) |
10 |
|
25 |
Total residual chlorine1)2)/(mg/L) |
0.5 |
|
Note: 1> The process control requirements for disinfection with chlorine-containing disinfectants are: the contact time of the disinfection contact tank is ≥ 1.5 hours, and the total residual chlorine at the outlet of the contact tank is 6.5~10mg/L> 2> The use of other disinfectants does not require total residual chlorine. |
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◉ Compliance Services
As a professional third-party testing and certification service organization, Jiayu Testing has qualifications such as CMA, CNAS, and occupational health technical service institutions. In the field of environmental testing, it currently has more than 1000 CMA testing parameters, covering water and wastewater, air and exhaust gas, soil and sediment, noise and vibration, and solid waste toxicity identification. The laboratory is built and managed strictly in accordance with standards, equipped with advanced instruments and equipment, and has a professional technical team with superb skills. It has rich industry service experience and strong testing technology capabilities. Based on the principles of objectivity and fairness, it provides authoritative testing reports with legal effect to the society, and provides full chain environmental risk management support for enterprises and regulatory departments. Welcome to contact us at 400-9269-886!
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