Weifang Zhengao Environmental Protection Water Treatment Equipment Co., Ltd
3305999262@qq.com
13356725992
7th Floor, Fortune International Business Building, No. 4931 Beihai Road, Kuiwen District, Weifang City, Shandong Province
medical institution
Refers to hospitals, health centers, sanatoriums, outpatient departments, clinics, health emergency stations, etc. engaged in disease diagnosis and treatment activities.
Medical institution wastewater
Refers to the medical wastewater discharged from outpatient clinics, wards, operating rooms, various testing rooms, pathology and anatomy rooms, radiology rooms, laundry rooms, morgues, and other places in medical institutions for diagnosis, treatment, daily life, and feces. When other sewage from medical institutions is mixed with the above-mentioned wastewater and discharged, it shall be regarded as medical institution wastewater.
To ensure the standard discharge of hospital wastewater treatment and reduce the risk of wastewater treatment stations, according to the requirements of the "Design Specification for Hospital Wastewater Treatment", hospital wastewater should meet the following requirements:
1. The wastewater from hospital wards and non wards should be separated, and hospital wastewater and waste should be strictly controlled and separated. It is not allowed to dispose of waste generated by the hospital into the wastewater system at will.
2. Various special drainage systems in hospitals should be collected separately and treated with different pre-treatment measures before being discharged into the hospital's wastewater treatment system.
Wastewater discharge requirements
1. The wastewater discharge of infectious diseases and tuberculosis medical institutions shall comply with the provisions in Table 1.
2. Comprehensive medical institutions and other medical institutions with 20 or more beds at or above the county level shall comply with the provisions of Table 2 for wastewater discharge. Wastewater directly or indirectly discharged into surface water bodies and sea areas shall comply with discharge standards, while wastewater discharged into sewers with normally operating urban secondary wastewater treatment plants at the terminal shall comply with pre-treatment standards.
3. Comprehensive medical institutions below the county level or with less than 20 beds, as well as all other medical institutions, can only discharge wastewater after disinfection treatment.
4. It is prohibited to directly discharge medical institution wastewater into drinking water protection areas and swimming areas of GB3838I, II and III water bodies, as well as GB3097 Class I and II sea areas.
5. Comprehensive medical institutions with infectious disease wards should separate infectious disease ward wastewater from non infectious disease ward wastewater. Wastewater and feces from infectious disease wards can only be treated together with other wastewater after disinfection.
6. Medical institution wastewater disinfected with chlorine containing disinfectants should undergo dechlorination treatment if directly discharged into surface water bodies and sea areas, so that the total residual chlorine is less than 0.5mg/L.
watch2. Water pollutant emission limits for comprehensive medical institutions and other medical institutions (daily average)
| serial number | control project | emission standard | Preprocessing standards | |
| 1 | Fecal coliforms count（ MPN/L ） | 500 | 5000 | |
| 2 | Intestinal pathogenic bacteria | Not detected | - | |
| 3 | enterovirus | Not detected | - | |
| 4 | pH | 6-9 | 6-9 | |
| 5 | Chemical Oxygen Demand（ COD ） concentration （ mg/L ） High allowable emission load（ G/bed) | 60 60 | 250 250 | |
| 6 | Biochemical Oxygen Demand（ BOD ） concentration （ mg/L ） High allowable emission load（ G/bed) | 20 20 | 100 100 | |
| 7 | Suspended solids（ SS ） concentration （ mg/L ） High allowable emission load（ G/bed) | 20 20 | 60 60 | |
| 8 | Ammonia nitrogen（ mg/L ） | 15 | - | |
| 9 | Animal and vegetable oils（ mg/L ） | 5 | 20 | |
| 10 | Petroleum category（ mg/L ） | 5 | 20 | |
| 11 | Anionic surfactant（ mg/L ） | 5 | 10 | |
| 12 | Chromaticity (dilution factor) | 30 | - | |
| 13 | Volatile phenol（ mg/L ） | 0.5 | 1.0 | |
| 14 | totalqinghuawu（ 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 chlorine 1 ） 2 ） （ mg/L ） | 0.5 | - | |
| Note: 1) The process control requirements for using chlorine containing disinfectants for disinfection are: First level standard: disinfection contact pool contact time ≥ 1h ， The total residual chlorine at the outlet of the contact tank is 3-10 mg/L. Secondary standard: Contact time of disinfection contact pool ≥ 1h ， The total residual chlorine at the outlet of the contact tank is 2-8 mg/L. 2) There is no requirement for total residual chlorine when using other disinfectants. |
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