空气净化器二次污染情况研究

Study on secondary pollution of air cleaner

空气净化器是一种能够对空气中颗粒物、气态污染物、微生物等一种或多种有害物质具有一定去除能力的家用电器。在使用过程中,由于污染物的富集,容易造成二次污染。对二次污染的成因进行了分析,并对10台空气净化器的二次污染情况进行了研究,分别测试了空气净化器在不同使用阶段,出风口5cm处PM2.5,PM10,甲醛及氨的释放浓度。结果表明随着空气净化器使用时间的增加,其出风口释放的污染物浓度随之增加,且气态污染物的释放浓度高于固态污染物。

Air cleaner is one type of household electric appliance capable of removing harmful substances such as particulate matter,gaseous pollutants,and microorganisms in the air.Secondary pollution is easily caused,during the enrichment of pollutants on the filter.The causes of secondary pollution are analyzed,and the secondary pollution of 10 air cleaners were studied.The air cleaners are tested on released concentration of PM2.5,PM10,formaldehyde and ammonia from the air outlet 5 cm at different use stages.The results show that with the increase of the use time of the air cleaner,the concentration of pollutants released from the air outlet increases,and the release concentration of gaseous pollutants are higher than that of solid pollutants.