Pilot study on urban sewage treatment with micro pressure swirl reactor

Study on the Influence of Different Carbon Sources on Nitrogen and Phosphorus Removal with Micro-pressure swirl Reactor

“…By setting an aeration device along one side of the bottom, air bubbles could be used to drive the liquid flow, so that the mixed liquid in the reactor could be powered and circulated. Since sewage and air bubbles were mainly in contact with the aeration side, under proper aeration amount, the dissolved oxygen concentration could be gradually reduced from the outside to the center [2]. This study used two identical MPRs to run in parallel.…”

“…Controlling the amount of aeration reasonably, three different dissolved oxygen environments (anaerobic, anoxic and aerobic) could exist in a single aeration tank at the same time. The feature made it more able for MPR to achieve simultaneous nitrogen and phosphorus removal from sewage [2].…”

“…In previous research, MPR had excellent performance in the treatment of low-temperature sewage, high-concentration wastewater and energy saving and consumption reduction, but the influence of different carbon sources on its nitrogen and phosphorus removal was still not clear [2,5,6,7]. This study investigated the effects of different carbon sources on MPR biological nitrogen and phosphorus removal by adding starch and glucose to the two MPR systems, aimed to provide references for the selection of other carbon sources and the practical application for MPR process.…”