| 摘要 |
Provided is a filter system comprising: a hollow fiber membrane filter comprising average-sized pores which are smaller than the average size of virus so as to eliminate virus existing in water passing through the pores; and an electrostatic absorption filter of which at least some thereof is positively charged so as to ion-adsorb negatively charged nanoparticles existing in the water by means of electrostatic attraction and removing the nanoparticles from the water to be supplied to the hollow fiber membrane filter in advance, so that drastic reduction in the amount of water passing through the hollow fiber membrane filter caused by the nanoparticles can be prevented. According to the present invention, virus existing in raw water can be removed by a size exclusion mechanism of the hollow fiber membrane filter, and also eliminated are the nanoparticles causing reduction in the amount of water passing through the hollow fiber membrane filter by means of the electrostatic absorption filter. |
