In addition to face masks, properly maintained air filters remain crucial in confined indoor spaces to help mitigate the spread of COVID-19 (SARS-CoV-2 virus). BothHEPA过滤器和ULPA过滤器reduce the number of microscopic particles in the air, which can keep air safe to breathe in places it’s needed most like hospitals, isolation rooms and crowded indoor areas.
COVID-19 virus spreads through the air on respiratory droplets created from talking, coughing, sneezing, and even breathing. When these activities occur in a populated space with stale air, the likelihood of transmission can significantly increase, as COVID-19 has been proven to remain viable for at least 3 hours lingering in the air or on surfaces up to four meters away from its last host.
Masks and social distancing significantly reduce the chance of the virus’s spread, but in some spaces additional measures may be needed.Recent findings suggest在拥挤的室内空间中含有Covid-19的最佳机会是在他们有机会感染房间里的机会之前，实现高质量的空气过滤以搅拌病毒颗粒。
Air filtration keeps respiratory droplets and other airborne particles moving in an enclosed space. A virus-deterring HVAC system will effectively circulate and filter out any unwanted particles, and return clean air to the facility or pump it outside to allow fresh air to move inside.
Businesses and healthcare facilities can modify existing HVAC systems to include a fan filter unit capable of removing COVID-19 from the air.
A cleanroom HEPA filter and ULPA filter are both designed to contain microscopic pathogens and hazardous particles. A fan filter unit (FFU) houses either a HEPA filter, which catches 99.99% of particles 0.3 microns, or an ULPA filter, which catches 99.999% of particles 0.12 microns. The COVID-19 virus is about 0.125 microns, but it can ride on respiratory droplets that are much larger, which both theHEPA and ULPA filtercan trap.
When masks and social distancing can be used in tandem with a HEPA- or ULPA-filtered FFU,the risk of transmitting or catching the virus is greatly diminished.
HEPA过滤器可以捕获冠状病毒(COVID-19) ?
HEPA（高效颗粒空气）过滤器为99.99％，捕获颗粒下降至0.3微米。SARS-COV-2为0.12微米，因此HEPA过滤器不能保证去除所有微小的空气传播的病毒颗粒。尽管如此，HEPA过滤器能够通过直接冲击，截取或扩散的方法捕获这些较小颗粒的一些部分。它们还可以有效地捕获较大的颗粒，病毒可能紧贴到0.3微米范围内。例如，当Covid-19携带乘坐较大的斑点时（例如大液滴或灰尘），可以在过滤介质中捕获病毒和较大粒子。由于这些原因，许多医院空气净化器使用HEPA过滤器来帮助减轻在拥挤的区域，如走廊和患者室内的感染传播。
What other types of air filtration protect against Coronavirus?
An ULPA (Ultra Low Penetration Air) filter, on the other hand, is 99.999% effective at catching particles down to 0.12 microns. Yes, an ULPA filter can effectively strip COVID-19 from the air itself, though it is still not a 100% guarantee. Because the filter medium is so fine, it reduces the speed at which air can flow through it, which may make ventilation a challenge. Many hospital air filters use ULPA filtration in operating rooms and intensive care units. Seriously ill COVID-19 patients are often treated in ICUs, and the particles hanging in the air there can be transferred via staff to other parts of the hospital if they are not contained. This is why medical air filters and hospital air filtration are so necessary to aid in the battle against COVID-19.
Using UV-C Sterilizing Module as a disinfectant against COVID-19
The potential for UV-C sterilization to supplement other disinfectants in removing SARS-CoV-2 is promising. In the wake of supply shortages, where standard methods of cleaning are temporarily inaccessible, UVC light can clean any surface the light touches.
光通过永久性地损害任何暴露细菌的DNA来消毒周围环境，这在过程中杀死了它们。通过适当的暴露，杀死其遇到的病毒和细菌有效99.9％。这可以减少从开放表面和环境空气暴露于Covid-19的机会，特别是如果UV-C灭菌模块连接到风扇过滤器单元。
beplay体育最新下载入口Terra Universal的空气过滤系统可以容纳远程访问的UV-C Sterilizing Module. The UV light helps clean the inside of the filter face to protect against bacteria, viruses, and mold.
Terra stocks medical grade HEPA filter fan units in a wide variety of sizes and configurations. These medical grade air filtration systems can be fixed in the ceiling for positive pressure recirculation, or in a reverse flow configuration to create a negative pressure environment such as an isolation room. Aportable isolation room filtration system可以在医院，诊所和其他狭窄区域的房间之间轻松滚动。这种移动医院空气净化系统适用于再循环和负压，因此可以快速将任何空间转换为负压隔离室。
For more information on medical grade HEPA filter systems, or to find out more about what our fan filter unit ormodular cleanroomdesigns can do for you, chat with our live product specialists or call (800) 578-6100 to request a free quote today!
Terra Universal is the leading expert in the design and fabrication of ISO rated cleanrooms, furnishing and supplies.