| 摘要 |
A dissolved air flotation system for treating wastewater is provided to separate sludge with high specific gravity, silently float and separate foreign materials, and effectively remove the floated and separated foreign materials by installing a plurality of inclined partitions in multistage within the dissolved air flotation system and forming the inclined partitions in a waveform shape such that safety zones which are not influenced by a water current are formed. In a dissolved air flotation system(10) for treating wastewater, which has an inflow port(11) formed at one side thereof, a discharge port(12) formed at the other side thereof, and a predetermined flotation space(13) formed therein, which includes an air generating and ejecting unit(15) installed near the inflow port, and which discharges sludge settled in a lowermost part within the dissolved air flotation system to the outside by a screw, the dissolved air flotation system for treating wastewater comprises a plurality of inclined partitions(20) installed in an inner space of the dissolved air flotation system such that the inclined partitions are slantly arranged side by side at an arbitrary inclination angle to intercept and stabilize flow activation of wastewater by an inflow flow of wastewater through the inflow port and air ejection pressure of the air generating and ejecting unit. The dissolved air flotation system further comprises a scraping equipment(30) fixed onto an upper part of the dissolved air flotation system to scrape and remove floating foreign materials floated from wastewater. The scraping equipment comprises: a motor(31); a chain drive mechanism including a drive sprocket(32), a drive sprocket(33) and a chain(34); scrapers(35); and a foreign material discharge guider(36). |
