How are bacteria and viruses in the air killed?

Some bacteria and viruses, for human beings, are very frightening. We get sick, we get sick, we die, and most of the time we have to do with them.

For example, the novel coronavirus pneumonia that swept the globe is caused by a virus.

Therefore, people began to pay attention from a long time ago: how to kill pathogenic bacteria and viruses in the air and protect human health?

For this problem, mankind has really experienced a long time of exploration.

Living conditions of bacteria and viruses

Every kind of organism needs special living conditions, and microorganism is no exception. Virus needs host and nutrition, bacteria need specific temperature, water, living space, etc. These are the most basic.

Knowing the living environment of a particular bacterium or virus, we can kill them by changing the state of the environment.

For example, most bacteria are afraid of high temperature, so they can be disinfected by high temperature;

Some bacteria need high humidity and can be disinfected by keeping the environment dry;

It sounds simple, but it also brings two other problems

1. Different microorganisms have different living conditions. How to kill all kinds of harmful microorganisms under the same conditions?

2. The distribution of bacteria and viruses in the air is very scattered, and people also live in the same environment, high temperature, dry environment is obviously not suitable.

So, the first thing we need to do is to gather the harmful microorganisms in the air, and then use a harmless killing method to destroy them.

Methods of improving air quality

Over the years, people have invented a variety of means to improve air quality.

As early as 1854, Johannes tenhouse discovered that charcoal could filter out the poisonous and harmful gases in the air. Since then, people have invented HEPA filtration technology, plasma technology, active oxygen technology, catalytic sterilization, negative ion technology and so on, which makes the air purification methods become more abundant.

Among them, HEPA filtration, adsorption and other technologies are the means to gather pathogenic bacteria and viruses, which can not be directly sterilized. Sometimes it's good for microbial reproduction. For example, the air filter screen of air conditioner is a hotbed for bacteria growth.

Therefore, the air purifier on the market, mostly uses the composite technology, uses a variety of purification technology and material medium. Among them, there are two core direct killing technologies

Ultraviolet technology and plasma technology.

Air purification technology

UV sterilization is well known, often said "sun exposure" can be said to be its low configuration version.

Ultraviolet rays can kill all kinds of microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, Rickettsia and mycoplasma. Irradiation can destroy the DNA (deoxyribonucleic acid) and RNA structure in the body and make it die or lose the reproductive ability immediately.

Plasma technology can produce high concentration plasma by corona discharge of asymmetric electrode, bacteria and viruses will be directly killed by ions generated by strong current. Purification is comprehensive, efficient, low cost, no consumables, no radiation, no secondary pollution.

In today's environment, good air is more and more expensive. Funonda air purifier, triple filtration system, can purify 730 cubic meters of air per hour. In addition to annoying bacteria and viruses, it can also solve formaldehyde, PM2.5 and other pollutants at the same time, so that you can truly achieve "one machine in hand, no worry about breathing".Care Guys Antibacterial wet wipes can help help kill bacterias.