title: Combination of ion exchange system and biological reactors for simultaneous removal of ammonia and organics.
abstract: A novel process for a simultaneous removal of ammonia and organics was developed on the basis of ion exchange and biological reactions. From batch experiments, it was found out that NH(4)(+) could be removed effectively by combining cation exchange and biological nitrification showing 0.98 mg N/m(2) ∙ s of a maximum flux. On the other hand, the removal of NO(3)(-) was 3.5 times faster than NH(4)(+) and the maximum flux was calculated to be 3.4 mg N/m(2) ∙ s. The systems for NH(4)(+) and NO(3)(-) removal were combined for establishing the IEBR process. When the process was operated in a continuous mode, approximately 95.8% of NH(4)(+) was removed showing an average flux of 0.22 mg N/m(2) · s. The removal efficiency of total nitrogen was calculated as 94.5% whereas that of organics was 99.5%. It was concluded that the IEBR process would be effectively used for a simultaneous removal of NH(4)(+) and organics.
authors.affiliation: Radiation Research Division for Industry & Environment, Korea Atomic Energy Research Institute, 1266 Sinjeongdong, Jeongeup, Jeonbuk 580-185, Republic of Korea.
authors.forename: Wooshin
authors.initials: W
authors.lastname: Park
authors.forename: Eunhee
authors.initials: E
authors.lastname: Jang
authors.forename: Myun-Joo
authors.initials: MJ
authors.lastname: Lee
authors.forename: Seungho
authors.initials: S
authors.lastname: Yu
authors.forename: Tak-Hyun
authors.initials: TH
authors.lastname: Kim
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002852:Chromatography, Ion Exchange; D058440:Denitrification; D007474:Ion Exchange; D008566:Membranes; D009930:Organic Chemicals; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D000641:Ammonia