1, Overview
This project is a supporting project for the hospital complex, the main project of the complex is expected to start in January of this year, and the main structural works will be completed in January of this year. As the environmental impact assessment report of this project has been evaluated and passed. According to the environmental evaluation report, the proposed sewage treatment plant scale is 680m3/d, located at the existing sewage treatment station of the hospital.
General hospital sewage consists of sewage discharged from inpatient departments, outpatient clinics, laboratory (chemical) rooms, cafeterias, bathrooms, toilets, reagent rooms, laundries and other places. The sewage is a low concentration of sewage, water quality and general sewage is similar, which contains organic and inorganic pollutants, such as a variety of drugs, disinfectants, anatomical remains and other pollutants, but also contains a large number of bacteria, viruses and parasites, the composition is more complex. If this wastewater is directly discharged into the water body without treatment, it will cause serious pollution to the surrounding waters and soil, thus jeopardizing people's daily life. Therefore, according to the national environmental protection law and related laws and regulations, combined with the characteristics of the hospital's sewage treatment and geographic conditions, a company fully grasp the hospital's complex project and supporting sewage station address, and with reference to similar hospitals in the sewage water quality and water quality changes in the basis of the hospital's wastewater secondary treatment engineering program.
2. Design Principles
1) Comply with the national regulations, standards and norms on environmental protection and hospital sewage management, obey the hospital's overall planning, and implement various related standards and regulations.
2) Selection of sewage treatment process according to local conditions, to achieve advanced technology, practical, safe and reliable, stable treatment effect, after treatment of water quality standards, and reduce the footprint.
3) On the basis of discharge standards, in the increasingly tense water supply, water costs continue to rise, consider the reuse of water.
4) Minimize the adverse impact of the sewage treatment plant on the surrounding environment and prevent secondary pollution.
5) Give due consideration to automated operation, in order to simplify the operation and management and reduce the labor intensity of workers, and easy maintenance.
6) Save energy, minimize operating costs, less investment in the project, small footprint, quick results.
7) try to use new materials, new products to extend the service life of the equipment
3. Design standards and norms
1), "Sewage Comprehensive Emission Standards" (GB8978-1996);
2), "Hospital Sewage Treatment Design Code" (CECS07: 88);
3), "Outdoor Drainage Design Code" (GBJ14-87);
4), "Building Water Supply and Drainage Design Code" (GBJ15-88);
5), "Standard for Ambient Noise in Urban Areas" (GB3096-93)
6), "Code for Structural Design of Drainage Works" (GBJ69;84)
7), "Miscellaneous Life Water Quality Standards for Miscellaneous Domestic Water" (GJ25.1-89)
8), "Design Code for Water in Buildings" (CESS30:91)
4, basic information
4.1 Design water volume: the treatment of water for 680m3/d.
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