Shaowu Hospital Sewage Treatment Equipment Manufacturer

Shaowu Hospital Sewage Treatment Equipment Manufacturer

In the nursing department of a hospital, medical staff generate a large amount of medical wastewater during the process of dressing and cleaning patients. Due to the lack of wastewater discharge and collection devices in the ward, medical wastewater cannot be collected or effectively treated, which increases the difficulty of medical staff's work and also affects their work efficiency. Direct discharge of medical wastewater into sewers not only causes waste of water resources, but also easily pollutes the environment.

Ozone is soluble in water, and at room temperature and pressure, its solubility in water is about 13 times higher than that of oxygen and 25 times higher than that of air. However, the stability of ozone water solution is greatly affected by the impurities contained in the water, especially when metal ions are present, ozone can quickly decompose into oxygen. Decompose slowly in pure water. The structure of ozone molecules is unstable, and they are more prone to self decomposition in water than in air. Although ozone has a solubility in water that is 10 times greater than oxygen, its solubility is very low in practice because it follows Henry's law, and its solubility is proportional to the partial and total pressures in the system. The content of ozone in the air is extremely low, so the partial pressure is also extremely low, which forces ozone in water to escape from the interface between water and air, causing the concentration of ozone in water to constantly decrease. Therefore, developing a high concentration ozone generator is an effective way to increase the solubility of ozone.

The principles for treating hospital wastewater should be:

Firstly, ensure the disinfection and sterilization effect meets the national sewage discharge standards:

Secondly, the discharge direction of sewage and the requirements of the receiving water body and environmental functions for water quality should be considered. The overall process of hospital sewage treatment usually includes two parts: pre-treatment of sewage and disinfection of sewage. The pretreatment of sewage usually adopts primary treatment and secondary treatment (biochemical treatment). The vast majority of hospital sewage treatment in our country adopts primary or secondary treatment. The sewage that is pre treated and then disinfected can generally meet the requirements of the national environmental protection and epidemic prevention departments for hospital sewage treatment. Weifang Zhengao Environmental Protection Water Treatment Equipment Co., Ltd. Manufacturer

Shaowu Hospital Sewage Treatment Equipment Manufacturer

To determine the hospital sewage treatment process, it is not only necessary to achieve the purpose of disinfection and sterilization, but also to consider the requirements of sewage discharge and the functional zoning of the receiving water environment for water quality. Hospital sewage should comply with the Comprehensive Wastewater Discharge Standard (GB8978-96), which puts higher requirements on hospital sewage treatment. According to the standard and related requirements, using chemical chlorine dioxide disinfection or CASS process to treat hospital sewage can adapt well to this change. Compared with corresponding treatment methods, it has good effects, less investment, convenient management, low operating costs, advanced and practical processes, and is technically and economically competitive.

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.