Application of low-density electric current to performance improvement of membrane bioreactor treating raw municipal wastewater

Battistelli, André Aguiar; Belli, Tiago José; Costa, Rayra Emanuelly da; Justino, Naiara Mottim; Silveira, Djalma Dias da; Lobo-Recio, María Ángeles; Lapolli, Flávio Rubens

doi:10.1007/s13762-018-1949-7

Cited by 18 publications

(4 citation statements)

References 41 publications

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“…The development of practical mathematical models instead of troubleshooting via pilot plant studies or observing existing facilities can help improve optimization and control strategies. In 2018, Battistelli et al studied the application of low-density electric current via electrocoagulation to increase the performance efficiency of MBRs on a lab scale, and the removal efficiency of organic matter and nutrients was higher than 98% [ 144 ]. This result indicates that electric current can be applied in large-scale wastewater treatment to enhance MBR performance.…”

Section: Future Prospects and Recommendationsmentioning

confidence: 99%

The Advancement in Membrane Bioreactor (MBR) Technology toward Sustainable Industrial Wastewater Management

et al. 2023

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The advancement in water treatment technology has revolutionized the progress of membrane bioreactor (MBR) technology in the modern era. The large space requirement, low efficiency, and high cost of the traditional activated sludge process have given the necessary space for the MBR system to come into action. The conventional activated sludge (CAS) process and tertiary filtration can be replaced by immersed and side-stream MBR. This article outlines the historical advancement of the MBR process in the treatment of industrial and municipal wastewaters. The structural features and design parameters of MBR, e.g., membrane surface properties, permeate flux, retention time, pH, alkalinity, temperature, cleaning frequency, etc., highly influence the efficiency of the MBR process. The submerged MBR can handle lower permeate flux (requires less power), whereas the side-stream MBR can handle higher permeate flux (requires more power). However, MBR has some operational issues with conventional water treatment technologies. The quality of sludge, equipment requirements, and fouling are major drawbacks of the MBR process. This review paper also deals with the approach to address these constraints. However, given the energy limitations, climatic changes, and resource depletion, conventional wastewater treatment systems face significant obstacles. When compared with CAS, MBR has better permeate quality, simpler operational management, and a reduced footprint requirement. Thus, for sustainable water treatment, MBR can be an efficient tool.

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Section: Future Prospects and Recommendationsmentioning

confidence: 99%

The Advancement in Membrane Bioreactor (MBR) Technology toward Sustainable Industrial Wastewater Management

et al. 2023

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“…As the MBR was exposed to electrocoagulation, the foulants with negative charge become neutralized by the Al 3 + released from anode dissociation. As a result of this mechanism, the ltration resistance caused by both suspended solids and the mixed liquor supernatant tends to decrease (Aguiar Battistelli et al 2018;Battistelli et al 2019b). In addition to the coagulation process, other electrochemical mechanisms can occur simultaneously as the electrocoagulation is applied, such as electroosmosis and electrophoresis, which may be associated with a reduction in the speci c resistance to ltration (Ibeid et al 2013).…”

Section: Membrane Fouling and Mixed Liquor Characteristicsmentioning

confidence: 99%

“…As a relatively new reactor con guration, some parameters associated with eMBR operation still need further investigation, especially when this reactor is fed with industrial wastewater. Previous studies have mainly focused on using eMBR to treat municipal wastewater (Hasan et al 2014;Giwa et al 2015;Battistelli et al 2019a;Su et al 2020), while its use for the treatment of industrial wastewaters is scarcely reported in the literature. To the best of our knowledge, parameters such as solids retention time (SRT) and exposure time to electric current have not yet been investigated in eMBR treating azo dye-containing wastewater.…”

Section: Introductionmentioning

confidence: 99%

Effects of solid retention time and exposure mode to electric current on Remazol Brilliant Violet removal in an electro-membrane bioreactor

Belli

Bassin

Vidal

et al. 2023

Environ Sci Pollut Res

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The performance of an anoxic-oxic membrane bioreactor electrochemically assisted (A/O-eMBR) was assessed as an alternative for azo dye (Remazol Brilhant Violet -RBV) removal from textile wastewater. The A/O-eMBR was operated under three experimental conditions (runs I, II and III), in which different solids retention time (SRT) (45 and 20 d) and exposure mode to electric current (6´ON/30´OFF and 6 ´ON/12´OFF) were assessed. The reactor exhibited excellent performance on the decolorization process for all experimental conditions, with average dye removal e ciency ranging from 94.3 to 98.2%. Activity batch assays showed that the dye removal rate (DRR) decreased from 16.8 to 10.2 mg RBV L − 1 h − 1 when the SRT was reduced from 45 to 20 d. a behavior attributed to the lower biomass content under these conditions. When the exposure mode was 6 ON´/ 12´OFF, a more substantial decrease of DRR to 1.5 mg RBV L − 1 h − 1 was noticed, suggesting a possible inhibitory effect on dye removal via biodegradation. By reducing the SRT to 20 d, a worse mixed liquor lterability condition was observed, with a membrane fouling rate (MFR) of 0.979 kPa d − 1 . In contrast, the use of electric current to exposure mode of 6 ON´/ 12 ´OFF resulted in lower membrane fouling propensity, with a MFR of 0.333 kPa d − 1 . A more attractive costbene t ratio in terms of dye removal was obtained by using the exposure mode of 6´ON/30´OFF, for which the energy demand was estimated at 21.9-22.6 kWh kg dye − 1 removed , 92-99% lower than that observed for the mode of 6´ON/12´OFF.

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“…The disadvantages are the slower growth rate of microorganisms, require pretreatment, fouling tendency, and capital cost (Cartagena et al 2013;Cantinho et al 2016;Sonawane and Murthy 2020). MBR treatment can be used to treat a variety of wastewaters, including domestic, chemical industry wastewater, food industry wastewater, and pharmaceutical industry wastewater (Moya-Llamas et al 2018;Battistelli et al 2019;Sonawane and Murthy 2022), etc. Human excrement and greywater constitute the majority of the wastewater discharged after domestic use.…”

Section: Introductionmentioning

confidence: 99%

Domestic wastewater treatment by membrane bioreactor system and optimization using response surface methodology

Sonawane

Murthy

2021

Int. J. Environ. Sci. Technol.

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One of the most widespread problems afflicting people throughout the world is adequate access to clean water. Problems with water are expected to grow worse in the coming decades, with water scarcity occurring globally, even in regions currently considered water-rich. Research on the effects of temperature, transmembrane pressure (TMP), and aeration rate on the quality of effluent is of great significance in the case of membrane bioreactor. By means of the box-Behnken design (BBD) response surface methodology experiments; for the experimental investigation, the three factors are selected for optimization like the temperature is optimized in the range of 27.6-37.4 °C, transmembrane pressure is 35-63 mm Hg, and aeration rate is optimized in the range of 75-90 L/min and regression models are established. The optimal control parameters of temperature, TMP, and aeration rate are found utilizing the BBD optimizer. The removal mechanism of pollutants is discussed, and GC-MS analysis of effluent of the MBR system is also reported. The results show that the aeration flow rate affected effluent quality more significantly compared to temperature and TMP. When the aeration flow rate is 90 L/min, the temperature is 37.4 °C, and TMP is 35 mm Hg, the obtained COD, BOD, TKN, and TP values achieve the standard quality governed by the Central Pollution Control Board (CPCB) of India.

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Application of low-density electric current to performance improvement of membrane bioreactor treating raw municipal wastewater

Cited by 18 publications

References 41 publications

The Advancement in Membrane Bioreactor (MBR) Technology toward Sustainable Industrial Wastewater Management

The Advancement in Membrane Bioreactor (MBR) Technology toward Sustainable Industrial Wastewater Management

Effects of solid retention time and exposure mode to electric current on Remazol Brilliant Violet removal in an electro-membrane bioreactor

Domestic wastewater treatment by membrane bioreactor system and optimization using response surface methodology

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