An apparatus for arranging a microorganism tank in which a nitrification / denitrifying microorganism is selectively cultivated

摘要

The present invention relates to an apparatus for arranging a microorganism tank in which nitrification and denitrifying microorganisms are selectively cultured, and is a nitrification and denitrification process using microorganisms in a sewage treatment process.;The constitution of the present invention is a factor for development of a process of adding an anoxic tank to the downstream of the aeration tank, and the anoxic tank at the downstream of the aeration tank can sufficiently reduce the nitrogen removal rate (TN) by 90% by thoroughly denitrifying the remaining 50% In order to utilize VFA (Volatile Fatty Acids) generated from 3 to 4 days fermentation process of raw sludge in organic sludge settling basin, organic carbon source necessary for denitrification of an additional anoxic tank is used. Anoxic tank containing microorganism settler, microorganism Aeration tank including a sedimentation tank and finally an anoxic tank including a microbial sedimentation tank and a continuous flow process apparatus for supplying VFA (Volatile Fatty Acids) to a final anaerobic tank in a raw sludge fermentation tank and a fermentation tank .