System and Method for wastewater treatment using membrane and Bacillus sp.

摘要

PURPOSE: Advanced sewage and wastewater treatment system and method using membrane and bacillus spp. are provided to improve treatment efficiency of organic matter, nitrogen and phosphorus by preventing formation of spores in reaction tank, thereby increasing growth rate of bacillus spp. CONSTITUTION: The advanced sewage and wastewater treatment system using membrane and bacillus spp. comprises a pretreatment facility(1) for removing miscellaneous materials, particulate and non-corrosive inorganic materials contained in wastewater flown in; a flow balancing tank(3) for storing influent flown in from the pretreatment facility and controlling flux of effluent discharged to first chamber of the reaction tank; and a reaction tank(5) divided into a plurality of chambers to remove organic matter, nitrogen and phosphorus contained in sewage and wastewater and solid-liquid separate sludge and treated water from a mixed solution of the sewage and wastewater containing organic matter, nitrogen and phosphorus by culturing high concentrated bacillus spp., wherein the reaction tank is divided into four chambers, air injection units(2) are respectively installed in the first to third chambers, a return pipe(4) is installed in the third chamber to return some of the mixed solution to the flow balancing tank and the first chamber, a submerged membrane(7) is installed in the fourth chamber to solid-liquid separate the mixed solution, an air cleaner(6) is installed in the fourth chamber to prevent clogging of the submerged membrane, and the submerged membrane is preferably a hollow fiber membrane module of suction filtration type.