(Fighting against New Coronary Pneumonia) Academician Hou Li'an: Research and development of integrated air purification and killing technology application warfare
China News Service, Beijing, July 5 (Reporter Sun Zifa) The main routes for the transmission of new coronaviruses include contact transmission, droplet transmission, and aerosol transmission in confined spaces. The latter two transmission methods use air as the medium. China Academician of the Academy of Engineering, one of the pioneers of China's special pollution prevention and control technology, and environmental engineering expert Hou Li'an led a scientific research team to focus on the scientific research of air purification and killing technology to combat "epidemic" scientific research, in order to effectively block the new coronavirus by attaching to the air Suspended particulate matter spreading in the epidemic area provides strong scientific and technological support.
Academician Hou Lian recently introduced in an online interview organized by the China Science and Technology Journalism Society and the "Technology Innovation and Brand" magazine that the most important and urgent thing for the epidemic area is the great risk of the spread of new coronavirus through aerosols. Air pollution and transmission interruption work. In order to solve the problem of air pollution in wards of epidemic areas and protect medical staff from infection, he and the scientific research team proposed a hospital air quality assurance solution that responds to different epidemic prevention needs, aiming to achieve a complete period of pathogenic microorganisms in the air of hospitals in epidemic areas Eliminate and provide effective technical support.
Developed "cloud-type aseptic air purifier"
After presenting the plan, Academician Hou Li'an led Professor Li Angui of Xi'an University of Architecture and Technology, Professor Wu Minghong of Shanghai University, Professor Chen Guanyi of Tianjin University, Professor Zhang Lin of Zhejiang University, and Professor Wang Bo of Lanzhou University to carry out emergency scientific research on air purification and killing technology in wards. It has been maturely applied and integrated with innovative technologies, and developed the "process indoor air elimination-fresh air system guarantee-negative pressure air out inactivation" full-process air purification technology and equipment-"cloud-type sterile air purifier", And put into the front line of anti-epidemic use, its main function is to effectively block suspended particles in the air.
Schematic diagram of virus transmission. Photo courtesy of China Science and Technology Journalism Association
Hou Li'an pointed out that "cloud-type aseptic air purifier" is an air purification equipment that enters the new coronary pneumonia ward in a special period. It is mainly based on the "cloud-type technology" independently developed by the scientific research team. The technologies such as chlorine dioxide disinfection and ultraviolet disinfection are In addition, multiple technologies are reasonably integrated and integrated, and the double elimination technology ensures that the pathogens are completely inactivated and treated, making up for the defects of the single technology. Not only that, the purifier does not require filter materials, and has high purification accuracy, which can remove fine particles such as dust, PM1, PM2.5, and droplets in the air, thereby purifying the air and blocking the spread of viruses and bacteria in the ward.
In addition to air purifiers, Hou Li'an team has also developed a "new technology for changing private houses into negative pressure wards," which uses advanced integrated concepts of "source fresh air purification-indoor functional material sterilization-air disinfection-exhaust exhaust gas elimination". In a very short period of time, a common house is transformed into a ward with negative pressure and disinfection functions with common equipment and low cost, so as to effectively solve the problem of insufficient capacity of the ward.
Participate in the preparation of indoor air environment epidemic prevention guide
Based on the application of a series of scientific research achievements on the frontline of anti-epidemic, Hou Li'an team formed a more complete research report based on the results of the new crown virus prevention and control research, and participated in the preparation of the "Office, Residential and Urban Development" issued by the Ministry of Housing and Urban-Rural Development. "Guidelines for the design of medical environment epidemic prevention and operation of environmental protection during the epidemic situation" provide scientific and technological support for the indoor air environment epidemic prevention design of public buildings and indoor air safety during the epidemic situation.
Schematic diagram of the integrated technology and complete equipment principle of the whole process of "indoor air elimination-fresh air system protection-negative pressure outlet wind inactivation". Photo courtesy of China Science and Technology Journalism Association
During the epidemic situation, another Environmental Epidemic Prevention Guide issued by the Ministry of Housing and Urban-Rural Development, “Guidelines for the Design and Safety of Indoor Air Environmental Epidemic Prevention in Public and Residential Buildings (Trial)”, was also drafted by Academician Hou Lian, Professor Li Angui, Professor Wu Minghong, Professor Gao Ran, etc. People participated in the preparation.
Hou Li'an said that "Guidelines for Indoor Air Environment Epidemic Prevention Design and Safety Guarantee for Public and Residential Buildings (Trial)" was prepared by the Chinese Academy of Engineering and hosted by Xi'an University of Architecture and Technology, Rocket Army University of Engineering, China Architectural Design and Research Institute Co., Ltd., Southwest China Architectural Design Research Institute Co., Ltd., Tsinghua University, Zhejiang University, Lanzhou University and other institutions and units participated in the compilation. It is the first national emergency design and management guide for public indoor air environment prevention in public and residential buildings. At the expert review meeting organized by the Ministry of Housing and Urban-Rural Development, the experts of the review team agreed that the "Guide" is informative and operable, and has important guiding significance for the future prevention and control of civil building epidemics in China.
Facing the increasingly severe global anti-epidemic situation and taking the joint construction of a community of human destiny as a starting point, Hou Li'an team shared the "Guide" with scholars in Sweden and Germany, and the scholars of the two countries translated into Swedish and German respectively. German anti-epidemic provides reference.
Actively make suggestions to serve the "epidemic" of science and technology war
As we all know, science and technology are the most powerful weapons for humans to fight against diseases. To overcome the epidemic, humans cannot do without scientific development and technological innovation, or scientific advice and decision-making.
"Cloud-type sterile air purifier" equipment developed. Photo courtesy of China Science and Technology Journalism Association
It is understood that while intensively conducting scientific research and actively donating materials to the epidemic area, Academician Hou Li'an who has made significant contributions to the exploration and construction of China's special pollution prevention and control system has not forgotten to play his professional advantages, and has joined several relevant experts. Suggestions for epidemic prevention and control, resumption of production, etc.:
——In the process of gradually resuming production and resuming production in various places, it is recommended to strengthen indoor air pollution and propagation interruption.
—— Carry out building air pollution and spreading risk assessment for designated hospitals and suspected case isolation buildings, as well as old densely populated communities, commercial buildings and schools.
——Strengthen public environment and health education, carry out epidemic situation notification and education through the Internet and media, and improve public environment and health literacy.
——Set up an expert group composed of experts in relevant fields at home and abroad to carry out indoor air pollution and propagation blocking mechanisms and technical research, and formulate a complete set of technical solutions, specifications and guidelines for building air pollution and propagation blocking.
——Take effective engineering transformation and technical measures for buildings with different ventilation types to prevent the spread of new coronavirus in indoor air. (Finish)