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http://hdl.handle.net/10553/46317
Title: | Degradation and detoxification of formalin wastewater with aerated biological filters and wetland reactors | Authors: | Melián, J. A.Herrera Ortega Méndez, José Alejandro Araña, J. Díaz, O. González Rendón, E. Tello |
UNESCO Clasification: | 330810 Tecnología de aguas residuales | Keywords: | Formaldehyde Biological aerated filter Constructed wetland Lemna minor Toxicity, et al |
Issue Date: | 2008 | Publisher: | 1359-5113 | Journal: | Process Biochemistry | Abstract: | Formalin wastewater containing high concentrations of formaldehyde and TOC was treated and detoxified with biological aerated filter (BAF) and wetland reactors. At similar formaldehyde loading rates (about 0.01–0.9 kg/m3 d) both reactors provided high efficiencies but the BAF was more efficient at treating formaldehyde and TOC with average eliminations of 98 and 92%, respectively. However, the BAF effluent was not always detoxified according to the Lemna minor toxicity test as growth inhibition was above 20%. Although the elimination of formaldehyde and TOC achieved by the wetland reactors (81 and 25%, respectively) was lower than that of the BAF, they provided higher total nitrogen reduction. The combination of BAF and wetland reactors is proposed as a novel and convenient method for the treatment of formalin wastewater as it provided almost complete elimination of formaldehyde and detoxified samples with L. minor negative growth inhibition (−45 to −52%). | URI: | http://hdl.handle.net/10553/46317 | ISSN: | 1359-5113 | DOI: | 10.1016/j.procbio.2008.07.020 | Source: | Process Biochemistry [ISSN 1359-5113], v. 43, p. 1432-1435 |
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