期刊
BIORESOURCE TECHNOLOGY
卷 132, 期 -, 页码 78-83出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.01.020
关键词
Magnetic field; Activated sludge; Formaldehyde
资金
- Polish Ministry of Science and Higher Education [N N523 453436]
The goal of this study was to assess the efficiency of treating industrial urea-formaldehyde wastewater by activated sludge in a static magnetic field (MF) of 7 mT and the efficiency of treating the wastewater in a bioreactor not exposed to an MF. Exposure to the MF increased formaldehyde (FA) removal from industrial wastewater with an FA concentration of 1600 mg/l by 20%. The MF had also a positive effect on the efficiency of chemical oxygen demand (COD) removal, and bacteria and activated sludge biomass growth, especially when the COD loading increased rapidly. Industrial wastewater may contain up to 13000 mg FA/l. Therefore, its treatment can require the application of more than one method to ensure that the final FA concentration will be within the permissible limit. The application of an MF to enhance the biological processes may be favourable solution to this problem. (C) 2013 Elsevier Ltd. All rights reserved.
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