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Description of the process flow of hospital sewage treatment in the current epidemic situation



Source: unknown Author: admin Date: 2020-02-11 10:44 Browse:

In the face of the current epidemic situation, we are most concerned about when the epidemic can be solved. I am also very concerned about the development of the epidemic situation and the cure of sick patients. I hope that the national scientists can help patients to cure successfully and develop vaccines as soon as possible. I also pay more attention to it than you Hospital sewage treatment The problem.

 Hospital sewage treatment equipment

Only when the hospital sewage is treated can the transmission be blocked better

Some highly infectious diseases, such as SARS in 2003 and new coronal pneumonia in Wuhan, are spreading in the society, which is a serious test for the existing hospital sewage treatment technology and facilities.

The source and composition of hospital sewage are complex. In addition to a large number of pathogenic pathogens such as bacteria, viruses, insect eggs, etc., the hospital sewage also contains chemical agents and radioisotopes. It has the characteristics of space pollution, acute infection and latent infection, and has great harm. If the hospital sewage containing pathogenic microorganisms is discharged into urban sewers or environmental water without disinfection and other harmless treatment, it will often cause water and soil pollution, cause various diseases and outbreak of water-borne infectious diseases, and seriously endanger people's health.

According to the design plan of Xiaotangshan Hospital, a designated hospital of SARS in 2003, the following conclusions are obtained Hospital sewage treatment equipment The technological process is as follows:

The fecal sewage is separated from the washing wastewater. The fecal sewage is first discharged into the septic tank. After being disinfected in the septic tank, it is lifted to the contact disinfection tank by the lifting pump. The washing wastewater is lifted directly into the contact disinfection tank. The effective residence time of the contact disinfection tank is not less than 2 hours. The sewage treated by the contact disinfection tank is discharged into the urban sewage treatment plant for further treatment The medicine device and contact disinfection tank are constructed by municipal corporation.

Process selection

The design basis of hospital sewage treatment in China is CECS 07:88, the standard of China Engineering Construction Standardization Committee, which stipulates that the design and treatment process should be determined according to the hospital type, sewage discharge direction, discharge standard and other factors.

(1) when the hospital sewage is discharged to the urban sewers with centralized sewage treatment plant, biological pollution is mainly solved, and primary treatment is adopted, as shown in Figure 1.

  

 Hospital sewage treatment process

 

(2) when the hospital sewage is discharged to the surface water area, the biological pollution, physical and chemical pollution and toxic and harmful substances of the sewage should be comprehensively treated according to the use of the water body and the laws and regulations of the environmental protection department. The secondary treatment should be adopted, as shown in figure 2.

  

 Hospital sewage treatment

 

There is no urban sewer in the area where the second Department of Xiaotangshan Hospital is located. According to the standard, the secondary biochemical treatment process should be adopted to treat the sewage of the designated hospital of SARS. However, the construction period of the hospital is very short, and it will be put into use immediately after the completion. The biochemical treatment process is adopted, one is that the construction period is long, the other is to cultivate the microorganism of the secondary biochemical treatment process, which generally takes one month In fact, the use of secondary biochemical process was not in line with the requirements of the hospital immediately put into use. About 2km to the west of the hospital, there is an urban sewage treatment plant in Changping District. Considering the actual situation, the sewage of the hospital is led to the urban sewage treatment plant for further treatment, which can meet the requirements of sanitation and epidemic prevention.

The second SARS designated hospital of Xiaotangshan Hospital was designed and constructed in a very short period of time, creating a miracle in the history of hospital construction. Since May 1, 2003, the hospital began to receive patients. It has been in operation for 2 months and is in good condition. 680 SARS patients have been hospitalized. It is the designated hospital with the largest number of SARS patients in the world at present, and all of them have been cured No one was infected in two villages within 1km from the second Department of Xiaotangshan Hospital, no one was infected in 24 villages of Xiaotangshan Town, and there were about 3000 medical and logistics workers in the hospital area of Xiaotangshan Hospital, and none of them was infected. It has been proved by practical practice that the hospital sewage treatment measures for the construction of Xiaotangshan SARS designated hospital are objective and effective. SARS virus is a new virus, and people's understanding and Research on it is not complete and comprehensive. With the in-depth study of scientific and technological workers, people will have a more clear understanding of SARS virus; especially the special research on the sewage treatment technology of SARS designated hospitals will make the sewage treatment methods and technologies of SARS designated hospitals more scientific, more systematic and effective.

In view of the current epidemic situation in Wuhan area, the establishment of huoshenshan and leishenshan hospitals in 10 days can take the sewage treatment process of Xiaotangshan Hospital as the premise and carry out targeted disinfection for different virus sources. Another miracle. At the same time, if there are related enterprises need to deal with sewage problems, our company will do our best!


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