Experimental Study on Survival of Microorganism in Fibrous Ventilation Filter
In Air-Condition(AC) systems, the filtration of airborne aerosol with filters is the most common way to control indoor air quality (IAQ). The microorganism could be removed with the dust in the filter. Once they were delivered into the room, the indoor air quality would be depressed. This paper summarizes the growth rule of bacteria on the filter, which based on the experiment of survival and reproduction of bacteria on the common fiberglass ventilation filter. Escherichia coli were used as a microbiological indicator. In addition, via adding nutriments to the filter, we have tried to simulate the influence on the growth of bacteria from the filter, which was used for a certain period. It is found that without the supply of nutriment, the bacteria could still propagate on the filter; while with the nutriments, a much more intense growth presents. During the experiment, the abundance of nutriment associates with the reproduction of bacteria as well as the secondary contaminant to the downstream-air quality. Cultured on the filter with bacteria after several weeks, the bacteria could still survive without dying out naturally in the filter media.
Bacteria growth Fibrous filter media Bacteria detecting technique Microorganism contamination System design
Junjie Liu Ruiying Qi Quanpeng Li
School of Environmental Science and Technology Tianjin University, Tianjin 300072, China;
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）