APPARATUS FOR CONTROLLING AERATION SYSTEM BY NITRIFICATION REACTION IN SEQUENCING BATCH REACTOR

摘要

PURPOSE: An aeration power controlling apparatus connected to a nitrification reaction in a sequencing batch reactor is provided to minimize the power used for a sewage disposal plant by controlling or stopping a supply to an SBR(Sequencing Batch Reactor) when a nitrification reaction ends. CONSTITUTION: An aeration power controlling apparatus comprises an SBR(Sequencing Batch Reactor)(400), a diffuser(410), a sequencing batch reactor DO(Dissolved Oxygen)(450), a microbial respiration rate measuring unit(420), and a programmable logic controller(430). An anaerobic (or an anoxic), or an aerobic reaction are successively performed by a setting in the SBR. The diffuser injects oxygen into the SBR by the aerobic reaction. An SBR DO sensor measures and monitors a dissolved oxygen concentration in the SBR. The microbial respiration rate measuring unit measures dissolved oxygen in the microorganism transferred from the SBR. The programmable logic controller computes an oxygen attrition rate, inclination, and slope variation amount at each measurement time using the measured dissolved oxygen concentration, and finishes the aerobic reaction by figuring out the stop time of the nitrification reaction by the computed values.