Patent ID: 9695075
Date: 2017-07-04
CPC Classifications: C02F,Y02E,Y02W

Claim:
1. A fluidized bed reactor for ammonia laden wastewater, comprising: a column, defining a fluidizing chamber therein, the column having an upper opening and a lower opening, the upper and lower openings being in communication with the fluidizing chamber, respectively; a plurality of carrier particles, partially filled in the fluidizing chamber; a first settling tank, having a bottom opening and a first outlet located at a position higher than the bottom opening, the bottom opening being in communication with the upper opening of the column; a fluidizing means for introducing the ammonia laden wastewater into the fluidizing chamber via the lower opening, and for further fluidizing the carrier particles within the fluidizing chamber, the ammonia laden wastewater so introduced further having COD; and microorganisms, comprising nitrifying bacteria, anammox bacteria and heterotrophic denitrifying bacteria, at least a part of the microorganisms being attached to the carrier particles, the nitrifying bacteria being adapted to perform nitrification reaction and transform ammonia into nitrite, the anammox bacteria being adapted to perform anammox reaction and transform ammonia and nitrite into nitrogen gas and nitrate, the heterotrophic denitrifying bacteria being adapted to perform heterotrophic denitrification reaction and transform nitrate and COD into nitrogen gas, wherein the first settling tank is disposed atop the column.