Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor
Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor
Longli BO1(), Taro URASE2, Xiaochang WANG1
1. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; 2. Department of Civil Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
The biodegradation of selected pharmaceutical micropollutants, including two pharmaceuticals with argued biodegradation, was studied by a lab-scale membrane bioreactor. The reaction kinetics and affecting factors were also investigated in this paper. Clofibric acid (CA) with contradictive biodegradation reported was degraded almost completely at different hydraulic retention times (HRTs) after adaptation to microorganisms. The biodegradation of CA was disturbed at low pH operation, while the activity of microorganisms recovered again after pH adjustment to neutral condition. Ibuprofen (IBP) degraded under neutral and acidic conditions. Removals of IBP and CA were zero-order and first-order reactions under high and low initial concentrations, respectively. Carbamazepine and diclofenac were not degraded regardless of HRTs and pH.
Corresponding Author(s):
BO Longli,Email:bolongli@xauat.edu.cn
引用本文:
. Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor[J]. Frontiers of Environmental Science and Engineering in China, 2009, 3(2): 236-240.
Longli BO, Taro URASE, Xiaochang WANG. Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor. Front Envir Sci Eng Chin, 2009, 3(2): 236-240.
G?mez M J, Martínez Bueno M J, Lacorte S, Fernández-Alba A R, Agüera A. Pilot survey monitoring pharmaceuticals and related compounds in a sewage treatment plant located on the Mediterranean coast. Chemosphere , 2007, 66(6): 993–1002 doi: 10.1016/j.chemosphere.2006.07.051
2
Nakada N, Tanishima T, Shinohara H, Kiri K, Takada H. Pharmaceutical chemicals and endocrine disrupters in municipal wastewater in Tokyo and their removal during activated sludge treatment. Water Research , 2006, 40(17): 3297–3303 doi: 10.1016/j.watres.2006.06.039
3
Heberer T. Occurrence, fate, and removal of pharmaceutical residues in the aquatic environment: a review of recent research data. Toxicology Letters , 2002, 131(1-2): 5–17 doi: 10.1016/S0378-4274(02)00041-3
4
Schwaiger J, Ferling H, Mallow U, Wintermayr H, Negele R D. Toxic effects of the non-steroidal anti-inflammatory drug diclofenac: Part I histological alterations and bioaccumulation in rainbow trout. Aquatic Toxicology , 2004, 68(2): 141–150 doi: 10.1016/j.aquatox.2004.03.014
5
Jobling S, Nolan M, Tyler C R, Brighty G, Sumpter J P. Widespread sexual disruption in wild fish. Environmental Science & Technology , 1998, 32(17): 2498–2506 doi: 10.1021/es9710870
6
Daughton C G, Ternes T A. Pharmaceuticals and personal care products in the environment: Agents of subtle change?Environmental Health Perspective , 1999, 107(6): 907–944 doi: 10.2307/3434573
7
Urase T, Kagawa C, Kikuta T. Factors affecting removal of pharmaceutical substances and estrogens in membrane separation bioreactors. Desalination , 2005, 178(1-3): 107–113 doi: 10.1016/j.desal.2004.11.031
8
Bernhard M, Müller J, Knepper T P. Biodegradation of persistent polar pollutants in wastewater: Comparison of an optimized lab-scale membrane bioreactor and activated sludge treatment. Water Research , 2006, 40(18): 3419–3428 doi: 10.1016/j.watres.2006.07.011
9
Kimura K, Hara H, Watanabe Y. Removal of pharmaceutical compounds by submerged membrane bioreactors (MBRs). Desalination , 2005, 178(1-3): 135–140 doi: 10.1016/j.desal.2004.11.033
10
Ternes T A, Joss A, Siegrist H. Scrutinizing pharmaceuticals and personal care products in wastewater treatment. Environmental Science & Technology , 2004, 38(20): 392A–399A doi: 10.1021/es040639t
