| 摘要 |
#CMT# #/CMT# Treating nitrogen containing waste water comprises: providing a reactor (10) with a liquid for the growth of several microorganisms; and introducing the nitrogen containing waste water into the reactor and discharging effluent from the reactor. A nitrification reaction, an autotrophic denitrification reaction, a heterotrophic denitrification reaction, and a chemical oxygen demand (COD) removal reaction are simultaneously carried out in the reactor. The microorganisms comprise nitrifying bacteria, autotrophic denitrifying bacteria and heterotrophic denitrifying bacteria. #CMT# : #/CMT# Treating nitrogen containing waste water comprises: providing a reactor (10) with a liquid for the growth of several microorganisms; and introducing the nitrogen containing waste water into the reactor and discharging effluent from the reactor. A nitrification reaction, an autotrophic denitrification reaction, a heterotrophic denitrification reaction, and a chemical oxygen demand (COD) removal reaction are simultaneously carried out in the reactor. The microorganisms comprise nitrifying bacteria, autotrophic denitrifying bacteria and heterotrophic denitrifying bacteria. The ammonium is oxidized into nitrite in the nitrification reaction, which is caused by the nitrifying bacteria. The ammonium acts as an electron donor and nitrite acts as an electron acceptor, and the ammonium and the nitrite are converted into nitrogen gas and nitrate, in the autotrophic denitrification reaction, which is caused by the autotrophic denitrifying bacteria. The heterotrophic denitrification reaction removes the nitrate and the COD, which is caused by the heterotrophic denitrifying bacteria. #CMT#USE : #/CMT# The method is useful for treating nitrogen containing waste water. #CMT#ADVANTAGE : #/CMT# The method: consumes less carbon source as compared with the traditional process, and thus does not require the addition of additional carbon source into the reactor; and simultaneously carries out nitrification, denitrification, autotrophic and heterotrophic denitrification in a single reactor and does not require two separate reactors for aerobic and anaerobic denitrification and thus effectively reduces the production and the operating costs. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic representation of the reactor for carrying out the treatment of nitrogen containing waste water. 10 : Reactor 12 : Tank with liquid 14 : Ventilation plates 16 : Air compressor 20 : Recirculation pipe #CMT#BIOLOGY : #/CMT# Preferred Components: The autotrophic denitrifying bacteria, which causes the autotrophic denitrification reaction are deposited in Korean Collection for Type Cultures (KCTC) under the deposit number KCTC 11551BP. The microorganisms are suspended in the liquid of the reactor. Preferred Method: The method further comprises introducing oxygen into the liquid of the reactor for the nitrification reaction. The nitrifying bacteria, autotrophic denitrifying bacteria and the heterotrophic denitrifying bacteria grow uniformly in the reactor. #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Components: The dissolved oxygen concentration in the reactor is adjusted to 0.1-0.5 mg/liter. #CMT#EXAMPLE : #/CMT# No suitable example given. |
