AEROBIC/ANAEROBIC CO-TREATMENT METHOD TO HIGH CONCENTRATED ORGANIC WASTE WATER BY SELF-CLOSED AIR RELEASING CONTROL LAYER, AND MICRO AIR BUBBLE INJECTION

摘要

The present invention constitutes a wastewater aeration tank for injecting fine air of less than 1 millimeter in order to purify organic organic wastewater rapidly and efficiently under aerobic conditions, and has a suitable thickness of a carrier of a material (styropol, sponge, plastic) having a smaller specific gravity than water. The mesh net is installed on the carrier.;A carrier floating suppression device is installed on the carrier so that the upper carrier layer can maintain a certain internal pressure.;By injecting the fine air, the oxygen dissolved amount is increased by increasing the pressure inside the tank by the injected air and increasing the amount of air and specific surface area.;Through the above system, even in high concentration organic wastewater, DO is maintained at 2-3 or more, so that even if the microbial MLSS concentration is increased above 8,000 PPM, anaerobic does not occur, and thus high concentration organic wastewater can be operated as an aerobic process. In addition, the inside of the carrier layer, which is thickly accumulated with microorganisms, forms a partial anaerobic state to maintain both aerobic and anaerobic conditions simultaneously in the same tank, thereby widening the range of decomposable substances of high concentration organic wastewater and improving nitrogen removal efficiency. Is exerted.;In particular, the scum sludge excessive deposition caused by the sludge excessively deposited on the upper part of the mesh network in the present facility is periodically cleaned through the washing apparatus of FIG.