METHOD FOR SIMULTANEOUS REMOVAL OF NITROGEND AND ORGANIC IN THE WASTE WATER USING MEMBRANE BIOREACTOR

摘要

PURPOSE: A method capable of removing nitrogen simultaneously with organic contaminants from waste water in one fluidized anammox membrane assisted bioreactor is provided to simplify the structure of the system, to facilitate the application of a post-treatment process if necessary since particle contaminants do not exist in effluent, and to reduce sludge generation amount for the burden of sludge treatment to be lightened. CONSTITUTION: A method capable of removing nitrogen simultaneously with organic contaminants from waste water comprises a step of removing an organic compound and nitrogen from a waste water by using a fluidized anammox MBR(Membrane assisted Biological Reactor)(50). The step also includes the following steps of: the step of removing nitrogen in effluent by the use of the anammox process using microorganism staying in the fluidized anammox MBR; the step of removing organic bodies through nitrous acid and a denitrogen process by the use of heterotroph denitrification bacteria staying in the fluidized anammox MBR; and the step of removing the particle contaminants and the dissolved contaminants in effluent which are not removed by biological reaction by the use of a membrane(54) dipped in the fluidized anammox MBR. [Reference numerals] (56a) Air feeder; (60) Controller;