The noun FILTRATION has 2 senses: 1. the process whereby fluids pass through a filter or a filtering medium. 2. the act of changing a fluid by passing it through a filter. Familiarity information: FILTRATION used as a noun is rare.
A sentence averages eleven words; an A4 / letter size sheet averages 32 to 35 sentences. A normal size sheet of paper with a standard layout, based on 80% - 90% coverage contains about 350 to 400 words.
If using 12 point Times or Times Roman font, it's about 10 English words per line, on average. Further, that font and size will put 49 single-spaced lines on a page. So, under those assumptions, an average word count would be 490 words on a single spaced page, or 245 on a double-spaced page.