Development of sewage treatment industry

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China has a low per capita water resources and an uneven spatial distribution. With the acceleration of urbanization and industrialization in China, the demand gap for water resources is also increasing day by day. In this context, the sewage treatment industry has become an emerging industry, currently occupying an equally important position as the tap water production, water supply, drainage, and reclaimed water reuse industries.

Although the sewage treatment industry in China is growing rapidly due to the increasing emphasis on environmental protection by the country and governments at all levels, the total amount of sewage treatment is increasing year by year, and the urban sewage treatment rate is constantly improving. But currently, China's sewage treatment industry is still in its early stages of development.

On the one hand, China's current sewage treatment capacity cannot keep up with the rapid expansion of water usage, and the construction of supporting facilities such as pipelines and sludge treatment is seriously lagging behind. On the other hand, there is still a significant gap in China's sewage treatment rate compared to developed countries, and the load rate of treatment facilities is low.

Therefore, China should improve its policies and regulations on sewage treatment, establish a regulatory system, create a reasonable sewage treatment fee system, support the development of the domestic environmental protection industry, and promote the industrialization and marketization of the sewage treatment industry. The sewage treatment industry is a sunrise industry with a very broad development prospect. China will invest 300 billion yuan during the 11th Five Year Plan period to promote urban sewage treatment and utilization, ushering in a period of rapid development for the Chinese sewage treatment industry^[7].

Xi'an Hospital Sewage Treatment Equipment Product Model

Characteristics of medical wastewater treatment equipment:

1. Small footprint and easy installation

2. Automatic operation, simple operation, and no need for dedicated personnel to manage the entire system

3. The system processing effect is stable and reliable

4. Beautiful appearance, compact structure, easy to move

5. No need to add chemicals, saving subsequent operating costs

6. Ozone disinfection, sterilization rate reaches 99%, disinfection*

Xi'an Hospital Sewage Treatment Equipment Product Model

Equipment process

1. The sewage treatment equipment uses physical methods to treat sewage, without the need to add drugs, and there will be no excessive chlorine emissions, without incurring subsequent investment costs.

2. The main body of the process is ozone disinfection+filtration adsorption.

3. Ozone disinfection, its sterilization mechanism is to destroy and oxidize the cell membrane, cytoplasm, enzyme system, and nucleic acid of microorganisms, thereby rapidly inactivating bacteria and viruses. Ozone uses air as raw material and has a killing rate of over 99% against pathogenic microorganisms, bacteria, viruses, etc. contained in the sewage of a certain department. 4. The entire equipment has a continuous service life of 80000 hours under standard conditions.

The sources and hazards of hospital wastewater

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The functions, facilities, and personnel composition of each department in the hospital are different. The main departments and facilities that generate sewage include: diagnosis and treatment rooms, laboratories, wards, laundry rooms, X-ray image printing, animal rooms, isotope therapy diagnosis, operating rooms, and other drainage facilities; The domestic sewage discharged by hospital administrative management and medical staff, as well as the drainage of canteens, single dormitories, and family dormitories. The composition and amount of wastewater generated by different departments vary, such as heavy metal wastewater, oily wastewater, printing wastewater, radioactive wastewater, etc. Moreover, the wastewater generated by hospitals of different properties also varies greatly. The discharge of hospital sewage is more complex than that of general domestic sewage.

The sources and components of hospital wastewater are complex, containing primary microorganisms, toxic and harmful physical and chemical pollutants, and radioactive pollution. It has characteristics such as spatial pollution, acute infection, and latent infection. Without effective treatment, it can become an important pathway for disease spread and seriously pollute the environment.^[4]