| 摘要 |
A filter system comprises a hollow fiber membrane filter having pores; and an electrostatic adsorption filter partially or wholly having positive charges to be ion adsorbed with nanoparticles of negative charges by an electrostatic attraction, the nanoparticles which exist in the water, and the electrostatic adsorption filter configured to remove in advance the nanoparticles from the water to be supplied to the hollow fiber membrane filter, to prevent a water passing amount of the hollow fiber membrane filter from being rapidly reduced. According to the present invention, the viruses existing in raw water may be removed in accordance with a size exclusion mechanism of the hollow fiber membrane filter, and the nanoparticles, which cause the reduction of the water passing amount of the hollow fiber membrane filter, may be removed using the electrostatic adsorption filter. |
