title: Treatment on low carbon-to-nitrogen micro-polluted water by layered biological aerated filter with floating and sunken media.
abstract: In order to improve the TN removal efficiency on low carbon-to-nitrogen micro-polluted water, in this study, a layered biological aerated filter (L-BAF) was built. The results showed that the removal efficiency for CODMn, NH3-N, and TN was 71.6-90.3%, 99.8-99.9%, and 57.8-65.7%, respectively, when the C/N ratio was kept at 3 and the volumetric flow rate was 0.072 m(3) d(-1). The L-BAF could improve the TN removal efficiency by about 20% compared to a traditional process. The L-BAF and traditional process removal efficiency for NH3-N and CODMn were similar. The kinetic performance of the L-BAF indicated that the relationship of CODMn removal efficiency with the influent CODMn concentration could be described by ln(C/C0) = -(0.0023/Q0C0(0.9398))H.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Resources and Environment, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China E-mail: liyf@lzu.edu.cn.
authors.forename: Xiaoning
authors.initials: X
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Resources and Environment, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China E-mail: liyf@lzu.edu.cn.
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Resources and Environment, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China E-mail: liyf@lzu.edu.cn.
authors.forename: Lincheng
authors.initials: L
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Resources and Environment, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China E-mail: liyf@lzu.edu.cn.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Yue
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Resources and Environment, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China E-mail: liyf@lzu.edu.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: Xie
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Resources and Environment, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, China E-mail: liyf@lzu.edu.cn.
authors.forename: Lijun
authors.initials: L
authors.lastname: Fan
mesh_terms: D001673:Biodegradation, Environmental; D018441:Biofilms / Q000254:growth & development; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology*; D002244:Carbon / Q000302:isolation & purification*; D002516:Ceramics / Q000737:chemistry; D005374:Filtration; D007700:Kinetics; D009584:Nitrogen / Q000302:isolation & purification*; D010100:Oxygen / Q000032:analysis; D011140:Polyurethanes / Q000737:chemistry; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D011140:Polyurethanes; D014874:Water Pollutants, Chemical; D002244:Carbon; D009584:Nitrogen; D010100:Oxygen