The optimal MBR configuration: Hybrid versus stand-alone — Comparison between three full-scale MBRs treating municipal wastewater

Krzemiński, Paweł; Langhorst, W.; Schyns, P.; Vente, D. de; Broeck, Rob Van den; Smets, Ilse; Impe, Jan Van; Graaf, J.H.J.M. van der; Lier, Jules B. van

doi:10.1016/j.desal.2011.10.038

Cited by 18 publications

(8 citation statements)

References 18 publications

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“…However, industrial wastewater has a higher organic load than ordinary municipal wastewater, and the use of a single MBR process to treat this type of wastewater is energy intensive; therefore, a combined process can reduce the energy cost during process operation. For example, the average specific energy consumption of the combined conventional activated sludge (CAS) and MBR system is 0.6 kWh/m 3 and can be as low as 0.76 kWh/m 3 for the up-flow Anaerobic Sludge Bioreactor (UASB) and MBR process [ 19 ], while the specific energy consumption of the single-stage MBR process is 1.1 kWh/m 3 , which is higher than that of the combined processes [ 21 ]. Furthermore, SBR pre-treatment is necessary for the process.…”

Section: Resultsmentioning

confidence: 99%

Pilot Scale Application of a Ceramic Membrane Bioreactor for Treating High-Salinity Oil Production Wastewater

Sun

Jin

2022

Membranes

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The offshore oil extraction process generates copious amounts of high-salinity oil-bearing wastewater; at present, treating such wastewater in an efficient and low-consumption manner is a major challenge. In this study, a flat ceramic membrane bioreactor (C−MBR) process combining aerobic microbial treatment technology and ceramic membrane filtration technology was used to treat oil-bearing wastewater. The pilot test results demonstrated the remarkable performance of the combined sequential batch reactor (SBR) and C-MBR process, wherein the chemical oxygen demand (COD) and ammonia nitrogen (NH4+−N) removal rates reached 93% and 98.9%, respectively. Microbial analysis indicated that the symbiosis between Marinobacterium, Marinobacter, and Nitrosomonas might have contributed to simultaneously removing NH4+−N and reducing COD, and the increased enrichment of Nitrosomonas significantly improved the nitrogen removal efficiency. Cleaning ceramic membranes with NaClO solution reduces membrane contamination and membrane cleaning frequency. The combined SBR and C−MBR process is an economical and feasible solution for treating high-salinity oil-bearing wastewater. Based on the pilot application study, the capital expenditure for operating the full-scale combined SBR and C−MBR process was estimated to be 251,717 USD/year, and the unit wastewater treatment cost was 0.21 USD/m3, which saved 62.5% of the energy cost compared to the conventional MBR process.

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Section: Resultsmentioning

confidence: 99%

Pilot Scale Application of a Ceramic Membrane Bioreactor for Treating High-Salinity Oil Production Wastewater

Sun

Jin

2022

Membranes

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“…If filterability, with its dynamic changes, is properly evaluated, the process operation can be optimized. Furthermore, the DFCm can be useful to research how filterability can be influenced by, as follows: MBR configuration [ 17 ]; MBR design, in particular hydraulic retention time [ 18 ] and recirculation [ 19 ]; membrane configurations [ 18 , 20 ]; wastewater influent characteristics [ 20 , 21 , 22 ]; activated sludge characteristics, such as temperature [ 18 , 21 ], mixed liquid suspended solids [ 18 , 23 ], viscosity [ 24 ], floc size [ 19 ], soluble organic fractions [ 18 ], sludge morphology and relative hydrophobicity [ 25 ]; operational parameters, such as sludge retention time [ 18 , 26 ], food to mass ratio [ 18 ], substrate addition [ 27 ], and dissolved oxygen concentrations [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

Filtration Characterization Method as Tool to Assess Membrane Bioreactor Sludge Filterability—The Delft Experience

Lousada-Ferreira

Krzemiński

Geilvoet³

et al. 2014

Membranes

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Prevention and removal of fouling is often the most energy intensive process in Membrane Bioreactors (MBRs), responsible for 40% to 50% of the total specific energy consumed in submerged MBRs. In the past decade, methods were developed to quantify and qualify fouling, aiming to support optimization in MBR operation. Therefore, there is a need for an evaluation of the lessons learned and how to proceed. In this article, five different methods for measuring MBR activated sludge filterability and critical flux are described, commented and evaluated. Both parameters characterize the fouling potential in full-scale MBRs. The article focuses on the Delft Filtration Characterization method (DFCm) as a convenient tool to characterize sludge properties, namely on data processing, accuracy, reproducibility, reliability, and applicability, defining the boundaries of the DFCm. Significant progress was made concerning fouling measurements in particular by using straight forward approaches focusing on the applicability of the obtained results. Nevertheless, a fouling measurement method is still to be defined which is capable of being unequivocal, concerning the fouling parameters definitions; practical and simple, in terms of set-up and operation; broad and useful, in terms of obtained results. A step forward would be the standardization of the aforementioned method to assess the sludge filtration quality.

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“…In the process design, the water in the mouth is changed to submerged outflow, reducing the head loss of the pipeline and the sewage lifting height [182]. In addition, due to the water inflow of the sewage plant changing with time and seasonal fluctuations, most of the time, the pumps cannot be operated efficiently, so the use of a variable frequency drive water pump is a very effective way to save energy [183].…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Integration of Green Energy and Advanced Energy-Efficient Technologies for Municipal Wastewater Treatment Plants

Guo

Sun

Pan

et al. 2019

IJERPH

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Wastewater treatment can consume a large amount of energy to meet discharge standards. However, wastewater also contains resources which could be recovered for secondary uses under proper treatment. Hence, the goal of this paper is to review the available green energy and biomass energy that can be utilized in wastewater treatment plants. Comprehensive elucidation of energy-efficient technologies for wastewater treatment plants are revealed. For these energy-efficient technologies, this review provides an introduction and current application status of these technologies as well as key performance indicators for the integration of green energy and energy-efficient technologies. There are several assessment perspectives summarized in the evaluation of the integration of green energy and energy-efficient technologies in wastewater treatment plants. To overcome the challenges in wastewater treatment plants, the Internet of Things (IoT) and green chemistry technologies for the water and energy nexus are proposed. The findings of this review are highly beneficial for the development of green energy and energy-efficient wastewater treatment plants. Future research should investigate the integration of green infrastructure and ecologically advanced treatment technologies to explore the potential benefits and advantages.

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The optimal MBR configuration: Hybrid versus stand-alone — Comparison between three full-scale MBRs treating municipal wastewater

Cited by 18 publications

References 18 publications

Pilot Scale Application of a Ceramic Membrane Bioreactor for Treating High-Salinity Oil Production Wastewater

Pilot Scale Application of a Ceramic Membrane Bioreactor for Treating High-Salinity Oil Production Wastewater

Filtration Characterization Method as Tool to Assess Membrane Bioreactor Sludge Filterability—The Delft Experience

Integration of Green Energy and Advanced Energy-Efficient Technologies for Municipal Wastewater Treatment Plants

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