In recent years, the topic of formaldehyde has been high fever, especially for home space, formaldehyde problem is particularly serious. According to the data from the indoor environmental protection center, the formaldehyde exceeding rate of newly decorated houses in three years is as high as 90%. I believe many people have doubts, why we do a lot of formaldehyde treatment, formaldehyde treatment rate is still so high?

有两个原因。一是甲醛的特性。甲醛挥发期长达3-15年，易反复超标。一旦不采取正确的控制措施，那么在这很长一段时间内，室内甲醛排放源释放的甲醛会继续在室内空气中积聚，从而超标。

There are two reasons. One is the characteristic of formaldehyde. The volatilization period of formaldehyde is as long as 3-15 years. Once the correct control measures are not taken, the formaldehyde released by indoor formaldehyde emission sources will continue to accumulate in the indoor air for a long time, thus exceeding the standard.

二是采用了一些不可靠的甲醛处理方法，如目前流行的绿色植物和活性炭袋。虽然两者对甲醛都有一定的吸附能力，但其吸附能力相对较小。如果甲醛浓度过高，绿色植物会枯萎坏死，活性炭会造成二次污染。如果按照普通家庭的使用量，比如几盆绿色植物或者几袋活性炭，去除甲醛就像做梦一样。

Second, some unreliable formaldehyde treatment methods were used, such as the popular green plants and activated carbon bags. Although both of them have a certain adsorption capacity for formaldehyde, their adsorption capacity is relatively small. If formaldehyde concentration is too high, green plants will wither and necrosis, and activated carbon will cause secondary pollution. If according to the amount of ordinary household use, such as a few pots of green plants or bags of activated carbon, removing formaldehyde is like a dream.

此外，还有另一种情况。在甲醛超标的高压下，部分业主会选择甲醛处理机构进行一次性甲醛处理。处理完成后，甲醛将进行现场检测，达到标准，甚保证“有效”。但事实上，这只是为了净化空气中的游离甲醛。今后甲醛仍会累积超标。

In addition, there is another situation. Under the high pressure of formaldehyde exceeding the standard, some owners will choose the formaldehyde treatment agency for one-time formaldehyde treatment. After treatment, formaldehyde will be tested on site to meet the standard, even to ensure "permanent effectiveness". But in fact, this is only to purify the free formaldehyde in the air. In the future, formaldehyde will still exceed the standard.

在室内空气中，甲醛有三种存在方式。一种是游离甲醛，我们可以处理。另一个附着在释放源的表面。三是处于释放源的内部组合状态。随着时间的推移，这两种状态下的甲醛会慢慢挥发成游离甲醛，可以进行处理，也会危害我们的健康。但是，我们不能改变这个过程，所以甲醛处理必须是可持续的。

There are three kinds of formaldehyde in indoor air. One is free formaldehyde, which we can deal with. The other is attached to the surface of the release source. Third, it is in the internal combination state of release sources. With the passage of time, the formaldehyde in these two states will slowly volatilize into free formaldehyde, which can be treated and will harm our health. However, we can't change the process, so formaldehyde treatment must be sustainable.

说到可持续性，能够持续改善室内空气质量的空气净化器与甲醛的特性非常吻合，特别是一些深受消费者青睐的。它是根据甲醛的特性，开发有针对性的净化技术，既能快速吸收甲醛，又能分解成二氧化碳和水，不断降低甲醛浓度，使我们远离甲醛超标。

When it comes to sustainability, air purifiers that can continuously improve indoor air quality are very consistent with the characteristics of formaldehyde, especially some brands favored by consumers. It is based on the characteristics of formaldehyde, the development of targeted purification technology, not only can quickly absorb formaldehyde, but also can decompose into carbon dioxide and water, constantly reduce the concentration of formaldehyde, so that we are far away from formaldehyde exceeding the standard.