WASTEWATER TREATMENT APPARATUS

摘要

To provide an advanced wastewater treatment apparatus in which an anoxic and an aeration roll pipe for improving nitrogen removal effect through denitrification and nitrification and an anaerobic roll pipe for improving phosphorus emission effect are connected are connected to a sequencing batch reactor to maximize wastewater treatment efficiency through the batch reactor, reduce scale of the batch reactor and easily operate the apparatus. An advanced wastewater treatment apparatus(1) comprises: a sequencing batch reactor(SBR)(10) in which a wastewater filling step, an aerobic, anoxic and anaerobic biological reaction step, a settling step and a drawing step are conducted in one tank at certain time intervals; an anoxic roll pipe(30) for denitrification of which the upstream(32) is connected to the SBR to fill wastewater in the anoxic roll pipe, through the downstream(36) of which treated water is recirculated to the SBR, and in which a rope type media is embedded; an aeration roll pipe(50) for nitrification of which the upstream(52) is connected to the SBR to fill wastewater in the aeration roll pipe, to which an air supply pipe(90) is connected, through the downstream(56) of which treated water is recirculated to the SBR, and in which a rope type media is embedded; and an anaerobic roll pipe(70) through the upstream(72) of which wastewater containing settled sludge discharged from the SBR is filled in the anaerobic roll pipe, and through the downstream(76) of which treated water is recirculated to the SBR, wherein a partition wall(20) for dividing a sediment, a supernatant separation region(12) and a reaction region(14) is installed in the SBR, wherein first and second return pipes(34,54) connected to the upper steam of the anoxic and aeration roll pipes are connected to the sediment and the supernatant separation region of the SBR, and the upper steam of the anaerobic roll pipe is connected to a settled sludge discharge pipe(18) installed on the bottom of the SBR, wherein first to third circulation pipes are connected to fill water regions of the roll pipes, and wherein the SBR comprises a diffuser(22) for supply air, and a decanter means(24) for drawing supernatant.