Method for wastewater treatment that simultaneous removal of organic matter and nitrogen in wastewater using microbial fuel cell

摘要

The present invention relates to a wastewater treatment method for simultaneously removing organic matters and nitrogen in wastewater using a microbial fuel cell, wherein the organic matter of the wastewater introduced into the oxidation reaction tank of the microbial fuel cell is oxidized by the microorganisms attached to the oxidation electrode, (Step 1); Supplying wastewater from which the organic matter is partially removed to a separation membrane reactor (MBR) to remove organic matter in the wastewater and convert ammonia nitrogen to nitrate nitrogen (step 2); Supplying the wastewater containing nitrate nitrogen to the deoxygenation tank to reduce dissolved oxygen contained in the wastewater (step 3); And supplying the wastewater having reduced dissolved oxygen to a reducing reaction tank of the microbial fuel cell to remove nitrate nitrogen in the wastewater by microorganisms attached to the reducing electrode (step 4); The present invention has the technical feature that it has an advantage of improving the treatment efficiency of nitrogen by reducing dissolved oxygen by using a deoxidation tank provided with a medium therein and has an advantage that the oxidizing electrode and the reducing electrode are formed in a grid shape, The efficiency of the microbial fuel cell is improved by greatly increasing the area and the membrane area, and it is possible to reduce the area of the microbial fuel cell and to manage the operation of the microbial fuel cell by installing the stacker easily.