The usage of electrostatic filters in the modern-day air-conditioning system was contributed by Sir Oliver Lodge, a British physicist, and Professor Penny from the University of California in the United States. Sir Oliver Lodge created the first electrostatic precipitator at a lead factory in 1885. Meanwhile, Professor Penny transformed the industrial electrostatic precipitator into an indoor electrostatic precipitator back in 1935. Therefore, we can say that the development of electrostatic filters has a history of more than 100 years.

Most people may think that electrostatic filters are only effective in filtering particles. However, it is unclear whether they can be used for sterilization and disinfection. Today, we will answer this question with a MayAir electrostatic filter.

01 Can electrostatic filters do sterilization?

A: Yes. As early as 1967, Sale AJH et al. [1] in an overseas research initiative found that a high-voltage pulsed electric field has a bactericidal effect. In China, Chen Jian [2] also published related research on high-voltage pulsed discharge sterilization in 1998. Therefore, the electrostatic filter, which also has the characteristics of high-voltage discharge, can effectively kill bacteria.

02 Can electrostatic filters kill viruses?

A: Yes. Mr. Zhu Yimin, Kong Xiangpeng, et al. from Dalian Maritime University [3] published related research papers funded by the National Natural Science Foundation of China in 2005, indicated that Parainfluenza virus (PIV) can be killed when it passes through the corona discharge area.

03 What is the principle made the electrostatic filters sterilize and kill viruses?

A: On the one hand, the high-voltage discharge can generate many high-energy participles, ultraviolet light, and free radicals to break the bacteria’s cell wall and destroy the virus. Bacteria and viruses do not exist alone and usually attach to particles or aerosols. The electrostatic filter can kill these bacteria and viruses as it absorbs the particles and aerosols on the plate, which possess a high-intensity electric field.

04 Is there any relevant standards or specification recognized by the country?

A: As early as 2002, when the Ministry of Health announced the "Technical Specification for Disinfection" (2002 Edition), electrostatic adsorption was one of the regulated disinfection factors used in hospital air disinfection machines.

05 Do electrostatic filters produce ozone?

A: Yes, but it can be controlled. The high-voltage discharge will generate ozone, but through years of research and development and improvement by MayAir, coupled with the use of advanced processing and assembly processes, the ozone generation can be controlled at 0.002-0.003mg/m3, far lower than the national requirement of 0.1mg /m3. There is no need to worry about trace amounts of ozone. It is a strong oxidant and can kill bacteria and viruses, as confirmed by the National P3 Laboratory [4].

06 Is there any safety hazard in the use of electrostatic filters?

A: Electrostatic filter technology is very mature and widely used. MayAir electrostatic filters have passed CE, UL, ROSH and other safety certifications and have total safety protection measures to ensure safe use.

07 What are the mainstream common sterilization and disinfection technologies? What are the technical advantages of MayAir’s products?

A: MayAir is the only manufacturer with many sterilization technologies and large-scale production in the industry. It is used in combination to cater to different technical characteristics to meet higher energy efficiency requirements and sustainable development.

08 What advantages does MayAir have in R&D, processing and assembly, quality control and production capacity?

A: MayAir has built a testing platform and experimental cabins that comply with ISO and GB standards. It has exact processing and testing equipment with a strict quality control system. The production capacity reaches 10,000 units per month.

09 How is the service network of MayAir?

A: MayAir has 23 branches and offices across the country to serve its customer.

10 What are the successful cases of MayAir?

A: The successful cases of MayAir are all over the country. They include China Zun, Beijing's tallest building and the National Exhibition and Convention Centre (Shanghai), the largest exhibition centre in China. We have Plaza 66, a project in Hong Kong, the State Grid Office Building owned by state enterprises and the Headquarters of Yum!, which a foreign company owns. We also provided our products to 90% of Huawei's R&D bases in the country, Beijing Daxing Airport, the wonder of the world and the country's subway system.

Reference:

1、Sale A J H, Hamilton W A. Effects of high electric fields on microorganisms : I. Killing of bacteria and yeasts[J]. BBA - General Subjects, 1967, 148(3):781-788.

2. Chen Jian. High-intensity pulsed electric field sterilization technology for liquid food[J]. Cold Drinks and Fast-frozen Food Industry, 1998(1):20-21.

3. Zhu Yimin, Kong Xiangpeng, Zhang Zhuoran, Zhang Manxia, Zheng Conglong. Study on Parainfluenza Virus Inactivation by Array-to-Board Corona Discharge. Journal of Beijing Institute of Technology, 2005, 25(z1).

4. The National P3 Laboratory proved for the first time that ozone can kill SARS virus. People's Daily Online, http://www.people.com.cn/GB/keji/1059/2171424.html