SUBMERGED MEMBRANE COUPLED ADVANCED WASTEWATER TREATMENT METHOD AND ITS SYSTEM

摘要

The present invention relates to an advanced wastewater treatment method and apparatus for simultaneously treating organic matter, nitrogen, and phosphorus in wastewater, and in particular, two reactors arranged in parallel and having no inflow and outflow between each other, and one MBR reactor having a subsequent membrane immersed therein. The present invention relates to an advanced method and apparatus for immersion type membrane-coupled sewage treatment system using the intermittent aeration and flow path changing method. In the present invention, the amount of conveying sludge is reduced to 1Q or less of influent, and the inflow source is not supplied with air. The flow path is changed to supply only to the reaction tank in which the air is not supplied, and the return sludge is supplied only to the reaction tank in which the air is supplied. The reactor operated by the exhalation tank is operated without supplying air for a certain time to completely exclude the influence of dissolved oxygen in the sludge. Advanced wastewater treatment method and apparatus utilizing dissolved oxygen depletion stage Is provided. According to the present invention can minimize the loss of organic matter, in particular organic matter such as SCVFA can greatly improve the treatment efficiency of nitrogen and phosphorus.