Aerobic Membrane Bioreactor for Wastewater Treatment – Performance Under Substrate-Limited Conditions

Delgado, S.; Villarroel, R.; González, Enrique; Morales, M.J.

doi:10.5772/17409

Cited by 10 publications

(11 citation statements)

References 43 publications

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“…Because of the high SRT values and complete solid retention inside the MBR, the biodiversity of the microorganisms is promoted and even slowly growing and free-living bacteria remain in the reactor, which leads to better performance [ 24 ].…”

Section: Resultsmentioning

confidence: 99%

Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

Alobaidi

Ulucan-Altuntas

Mhemid

et al. 2021

IJERPH

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Although conventional biological treatment plants can remove basic pollutants, they are ineffective at removing recalcitrant pollutants. Membrane bioreactors contain promising technology and have the advantages of better effluent quality and lower sludge production compared to those of conventional biological treatment processes. In this study, the removal of pharmaceutical compounds by membrane bioreactors under different solid retention times (SRTs) was investigated. To study the effect of SRT on the removal of emerging pharmaceuticals, the levels of pharmaceuticals were measured over 96 days for the following retention times: 20, 30, and 40-day SRT. It was found that the 40-day SRT had the optimum performance in terms of the pharmaceuticals’ elimination. The removal efficiencies of the chemical oxygen demand (COD) for each selected SRT were higher than 96% at steady-state conditions. The highest degradation efficiency was observed for paracetamol. Paracetamol was the most removed compound followed by ranitidine, atenolol, bezafibrate, diclofenac, and carbamazepine. The microbial community at the phylum level was also analyzed to understand the biodegradability of pharmaceuticals. It was noticed that the Proteobacteria phylum increased from 46.8% to 60.0% after 96 days with the pharmaceuticals. The Actinobacteria class, which can metabolize paracetamol, carbamazepine, and atenolol, was also increased from 9.1% to 17.9% after adding pharmaceuticals. The by-products of diclofenac, bezafibrate, and carbamazepine were observed in the effluent samples.

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Section: Resultsmentioning

confidence: 99%

Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

Alobaidi

Ulucan-Altuntas

Mhemid

et al. 2021

IJERPH

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“…Figure 4 shows the schematic representation of the different paths of the membrane process. Over the past decades, membrane bioreactors (MBRs) have reached a significant market share in water and wastewater settings, which is expected to grow at a compound annual growth rate Over the past decades, membrane bioreactors (MBRs) have reached a significant market share in water and wastewater settings, which is expected to grow at a compound annual growth rate (CAGR) of 13.2% [13,49]. This seems to be higher than that of other advanced technologies, thereby increasing its market value from USD 337 million in 2010 to USD 627 million in 2015 [13].…”

Section: Membrane Bioreactormentioning

confidence: 99%

“…Over the past decades, membrane bioreactors (MBRs) have reached a significant market share in water and wastewater settings, which is expected to grow at a compound annual growth rate Over the past decades, membrane bioreactors (MBRs) have reached a significant market share in water and wastewater settings, which is expected to grow at a compound annual growth rate (CAGR) of 13.2% [13,49]. This seems to be higher than that of other advanced technologies, thereby increasing its market value from USD 337 million in 2010 to USD 627 million in 2015 [13]. The main limitation for their widespread application is their high energy demand between 0.45 and 0.65 kWh.m −3 for the highest optimum operation from a demonstration plant, according to recent studies [42,50].…”

Section: Membrane Bioreactormentioning

confidence: 99%

“…Conventionally, this involves activated sludge treatment together with a process filtration through a membrane with a pore size between 10 nm and 0.4 microns (micro/ultrafiltration), which enhances the sludge separation [42,52]. The membrane as a barrier retains all particles, colloids, bacteria, and viruses to provide complete treated water [13].…”

Section: Limitations Of Mbrmentioning

confidence: 99%

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Fate of COVID-19 Occurrences in Wastewater Systems: Emerging Detection and Treatment Technologies—A Review

Tetteh

Amankwa

Armah

et al. 2020

Water

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The coronavirus (COVID-19) pandemic is currently posing a significant threat to the world’s public health and social-economic growth. Despite the rigorous international lockdown and quarantine efforts, the rate of COVID-19 infectious cases remains exceptionally high. Notwithstanding, the end route of COVID-19, together with emerging contaminants’ (antibiotics, pharmaceuticals, nanoplastics, pesticide, etc.) occurrence in wastewater treatment plants (WWTPs), poses a great challenge in wastewater settings. Therefore, this paper seeks to review an inter-disciplinary and technological approach as a roadmap for the water and wastewater settings to help fight COVID-19 and future waves of pandemics. This study explored wastewater–based epidemiology (WBE) potential for detecting SARS-CoV-2 and its metabolites in wastewater settings. Furthermore, the prospects of integrating innovative and robust technologies such as magnetic nanotechnology, advanced oxidation process, biosensors, and membrane bioreactors into the WWTPs to augment the risk of COVID-19’s environmental impacts and improve water quality are discussed. In terms of the diagnostics of COVID-19, potential biosensors such as sample–answer chip-, paper- and nanomaterials-based biosensors are highlighted. In conclusion, sewage treatment systems, together with magnetic biosensor diagnostics and WBE, could be a possible way to keep a surveillance on the outbreak of COVID-19 in communities around the globe, thereby identifying hotspots and curbing the diagnostic costs of testing. Photocatalysis prospects are high to inactivate coronavirus, and therefore a focus on safe nanotechnology and bioengineering should be encouraged.

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“…In paper [6], it was stated that over the past two decades, the technology of membrane bioreactors had taken a significant market share in wastewater treatment. It is expected that the annual growth of the rate of MBR application will be higher than that of other advanced technologies and other membrane processes.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Experimental research into the process of biological treatment of wastewater with the use of the membrane bioreactor

Shevchenko¹,

Chub²,

Didrikh³

2018

EEJET

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Розглянуто ефективність роботи мембранного біореактору (МБР) при очистці стічних вод біологічним методом. Експериментальні дослідження проводились на тестовому мембранному біореакторі виробництва фірми «Альфа Лаваль» (Данія). Застосування мембранного біораектору має наступні відмінності від традиційних споруд біологічної очистки: відсутність споруд для відстоювання стоків, концентрація активного мулу до 12-13 г/л тощо. У випадку застосування МБР процес відстоювання замінюється фільтрацією, промивка мембранних модулів проходить без спорожнення ємностей та без вилучення модулів з ємностей. В процесі апробації мембранного біореактору на базі модульної установки виробництва фірми «Альфа Лаваль» (Данія) для очистки побутових стічних вод був досягнутий режим очистки, який відповідає вимогам на скид. Ефективність очистки за основними показниками склала: ХПК-93 %, БПК5-99 %, завислими речовинами-98,5 %, азотом амонійним-98,5 %. За нітратами ефективність роботи МБР склала 89 % після налагодження дози реагенту і дози кисню в зоні нітрифікації. Ефективність за фосфатами у 98,6 % була досягнута після налагодження дози реагенту. Проведені дослідження дозволили отримати стабільний режим роботи МБР з забезпеченням ефективного процесу очистки стічних вод. Наведено залежності динаміки зміни величин основних забруднень стічних вод (ХПК, БПК5, сполуки азоту та фосфору). Це дозволяє досягнути жорстких вимог до скиду стічних вод у водойми та знизити собівартість очистки за рахунок зниження енергоспоживання. Вивчено механізм роботи МБР в умовах очистки реальних стічних вод, що дозволяє визначити умови використання МБР в технології біологічної очистки стічних вод Ключові слова: біологічна очистка, мембранний біореактор, мікрофільтрація, азот, фосфор, нітрифікація, денітрифікація, реагент

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Aerobic Membrane Bioreactor for Wastewater Treatment – Performance Under Substrate-Limited Conditions

Cited by 10 publications

References 43 publications

Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

Fate of COVID-19 Occurrences in Wastewater Systems: Emerging Detection and Treatment Technologies—A Review

Experimental research into the process of biological treatment of wastewater with the use of the membrane bioreactor

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Aerobic Membrane Bioreactor for Wastewater Treatment – Performance Under Substrate-Limited Conditions

Cited by 10 publications

References 43 publications

Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

Fate of COVID-19 Occurrences in Wastewater Systems: Emerging Detection and Treatment Technologies—A Review

Experimental research into the process of biological treatment of wastewater with the use of the membrane bio­reactor

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Product

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Experimental research into the process of biological treatment of wastewater with the use of the membrane bioreactor