Evaluating the performance and membrane fouling of an electro-membrane bioreactor treating textile industrial wastewater
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This study evaluated for the first time the performance and the membrane fouling behavior of a laboratory-scale electro-membrane bioreactor (EMBR) for the treatment of real textile wastewater. The EMBR was operated initially with no electrocoagulation process (control period) during 30 days (run I), and thereafter, the electrocoagulation was started, using the electrical current density of 10 A m−2 (run II) and 15 A m−2 (run III). The reactor performance on color removal was significantly improved by electrocoagulation process, attaining average efficiency of 50 and 70% in the experimental runs II and III. Similarly, the nitrification performance also was enhanced during the period with electrocoagulation, enabling an average NH4+–N removal efficiencies above 90% in the runs II and III. Activity batch assays have shown that autotrophic biomass exhibited a higher oxygen uptake rate during the electrocoagulation experiments, indicating that nitrifying activity increased in the EMBR over this period. Despite the substantial variation in the influent COD values, the COD removal efficiencies were practically constant (75–77%) throughout experimental period. This behavior indicates that the reactor exhibited a great resistance to shock loading, an important feature for the treatment of industrial wastewaters. Better mixed liquor filterability conditions were found during the electric current application, resulting in a lower membrane fouling rate and demanding a lower frequency of the membrane chemical cleaning process.
KeywordsElectrocoagulation Color removal Mixed liquor filterability Nitrification
The authors gratefully acknowledge the financial support by the following Brazilian agencies: Brazilian National Counsel of Technological and Scientific Development—CNPQ (MCTI/CNPq/CT-Biotec N° 30/2013) and Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina—FAPESC (FAPESC/CNPQ Nº 06/2016).
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Conflict of interest
The authors declare that they have no conflict of interest.
- Alimohammadi M, Askari M, Dehghani MH, Dalvand A, Saeedi R, Yetilmezsoy K, Heibati B, McKay G (2017) Elimination of natural organic matter by electrocoagulation using bipolar and monopolar arrangements of iron and aluminum electrodes. Int J Environ Sci Technol 4(10):2125–2134. https://doi.org/10.1007/s13762-017-1402-3 CrossRefGoogle Scholar
- Battistelli AA, Belli TJ, Costa RE, Justino NM, Silveira DD, Lobo-Recio MA, Lapolli FR (2018) Application of low-density electric current to performance improvement of membrane bioreactor treating raw municipal wastewater. Int J Environ Sci Technol. https://doi.org/10.1007/s13762-018-1949-7 Google Scholar
- Costa RE, Battistelli AA, Bernardelli JKB, Bassin JP, Belli TJ, Lapolli FR (2019) Assessing the performance and microbial community of hybrid moving bed and conventional membrane bioreactors treating municipal wastewater. Environ Technol 40(6):716–729. https://doi.org/10.1080/09593330.2017.1404137 CrossRefGoogle Scholar
- Eaton A, Clesceri L, Greenberg A (2005) Standard methods for the examination of water and wastewater, 21st edn. Standard methods for the examination of water and wastewater, Washington, DCGoogle Scholar
- Huang W, Wang W, Shi W, Lei Z, Zhang Z, Chen R, Zhou B (2014) Use low direct current electric field to augment nitrification and structural stability of aerobic granular sludge when treating low COD/NH4-N wastewater. Bioresour Technol 171:139–144. https://doi.org/10.1016/j.biortech.2014.08.043 CrossRefGoogle Scholar
- Li L, Dong Y, Qian G, Hu X, Ye L (2018) Performance and microbial community analysis of bio-electrocoagulation on simultaneous nitrification and denitrification in submerged membrane bioreactor at limited dissolved oxygen. Bioresour Technol 258:168–176. https://doi.org/10.1016/j.biortech.2018.02.121 CrossRefGoogle Scholar
- Manentia Diego R, Módenes Aparecido N, Soares Petrick A, Boaventura Rui AR, Palácio Soraya M, Borba Fernando H, Espinoza-Quiñones Fernando R, Bergamasco Rosângela, Vilar Vítor JP (2015) Biodegradability and toxicity assessment of a real textile wastewater effluent treated by an optimized electrocoagulation process. Environ Technol 36(5):496–506. https://doi.org/10.1080/09593330.2014.952676 CrossRefGoogle Scholar
- Metcalf and Eddy (2014) Wastewater engineering—treatment and reuse, 5th edn. McGraw-Hill, BostonGoogle Scholar
- O’Neill C, Hawke FR, Hawkes DL, Lourenço ND, Pinheiro HM, Delée W (1999) Colour in textile effluents–sources, measurement, discharge consents and simulation: a review. J Chem Technol Biotechnol Int Res Process Environ Clean Technol 74(11):1009–1018. https://doi.org/10.1002/(SICI)1097-4660(199911)74:11%3c1009:AIDJCTB153%3e3.0.CO;2-N Google Scholar
- Shore J (1995) Dyeing with reactive dyes. Cellulosics dyeing. The Alden Press, OxfordGoogle Scholar
- WHO (World Health Organization) (1998) Division of operational support in environmental health. Guidelines for drinking-water quality, vol 2. Health criteria and other supporting information: addendum, 2nd edn. World Health Organization, GenevaGoogle Scholar
- Zeyoudi M, Altenaiji E, Ozer LY, Ahmed I, Yousef AF, Hasan SW (2015) Impact of continuous and intermittent supply of electric field on the function and microbial community of wastewater treatment electro-bioreactors. Electrochim Acta 181:271–279. https://doi.org/10.1016/j.electacta.2015.04.095 CrossRefGoogle Scholar