| 摘要 |
The present invention relates to a dissolved-air flotation-type pretreatment apparatus. The dissolved-air flotation-type pretreatment apparatus includes: a flotation tank configured to remove foreign substances such as floating matter, turbid matter, or algae contained in raw water such as seawater, sewage, or wastewater; a filtering compartment part (2) provided in the flotation tank (20) and having one partially opened surface and another surface such that the treated water, obtained by primarily removing the floating matter from the raw water, passes therethrough; and a plurality of filtering balls (3) embedded in the filtering compartment part, the plurality of filtering balls including a fibrous or spongy material to filter the turbid matter or floating and suspended solids that remain in the treatment water fed into the filtering compartment part (2). |
