| 摘要 |
PURPOSE: To remove recalcitrant compounds from wastewater, by using fenton oxidation and ozone bubble flotation. CONSTITUTION: The method comprises steps of after coagulating raw water in a coagulation tank (C), transferring the coagulated water to an automatic filtering device (J); after separating sludge and supernatant from the coagulated water, transferring the separated supernatant to a fenton oxidation tank (F); after putting additives in the supernatant with stirring to oxidize, transferring the oxidized water to an exit chamber (U) of a dissolved air flotation (DAF) tank (A); compulsorily removing floating materials in the oxidized water transferred to the exit chamber by being adhered to and adsorbed by ultrafine bubbles, which are exited and spread at an exit valve(14-1); after pressurizing ozone by an ozone pressurizer (K) where the ozone is supplied from an ozone generator (O), putting the pressured ozone in a bubble generator (G); after generating pressurized ozone bubble water by the bubble generator, transferring it through a transfer pipe(15) to an exit valve(14) to exit ultrafine ozone bubbles to the lower part exit chamber (V); contacting recalcitrant compounds with the ozone of the exited ultrafine ozone bubbles to oxidize and decompose the recalcitrant compounds; after continuously measuring the water quality of the treated water transferred to an outflow chamber (B), stopping the discharge of the treated water when the quality of the treated water is below the standard and transferring it to the fenton oxidation tank or the DAF tank again; after measuring the treated water flown in the outflow chamber after the retreatment, discharging it when the quality of water reaches to the standard value; and cutting-off the outflow of the treated water when the quality of water is below the standard and repeatedly oxidizing and decomposing the wastewater.
|
