Sequencing Batch Reactor for Wastewater Treatment: Recent Advances

Dutta, Aparna; Sarkar, Sudipta

doi:10.1007/s40726-015-0016-y

Cited by 105 publications

(71 citation statements)

References 110 publications

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“…Organic chemicals in wastewater, which are difficult in treating can even be treated by SBR. Dutta & Sarkar, Journal of Water Resource and Protection 2015 [11] made a slight change in the design of SBR to treat ever-increasing Nutrient load in Effluents and achieved successful results. In the current study, SBR was run on pilot scale trial for three months i.e., from August to October.…”

Section: Sequencing Batch Reactormentioning

confidence: 99%

Biological Treatability of Low Total Dissolved Solids (LTDS) Using SBR as a Pre-Treatment for Reverse Osmosis

Reddy¹,

Karnena²,

Yalakala³

et al. 2020

JWARP

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Huge quantity of effluents is generated from pharmaceutical industries attributed to their wide array of manufacturing and maintenance processes. Wastewaters from pharmaceuticals are characterized by the presence of solids, pH, temperature, biodegradable organic compounds, unusual turbidity, hardness and conductivity. Wastewater from pharmaceutical industry arising from various units is categorised as low total dissolved solids (LTDS) and high total dissolved solids (HTDS) based on the concentration of total dissolved solids. The present study focuses on treatment of LTDS using a combination of biological treatment followed by membrane process, reverse osmosis. This research presents the results from the pilot-scale studies focussed on biological treatment using SBR as pre-treatment for RO towards the removal of LTDS effluent. Three-month data on a daily basis is presented. The efficiency of the process was tested with a reduction in parameters like total dissolved solids and chemical oxygen demand. SBR tested for its suitability as a preliminary treatment for the Reverse Osmosis process during the months of August-October. The highest and lowest TDS reduction was recorded as 9.72% and −4.67% in the month of August. The highest and least COD reduction was recorded as 87.28% and 80.66% in the same month. The highest and lowest TDS reduction was recorded as 0.84% and −7.92% in the month of September. The highest and least COD reduction was recorded as 87.07% and 83.28% in the same month. The performance of RO tested for its efficiency in removing the TDS and COD after SBR as pre-treatment. The highest and lowest TDS reduction was recorded as 94.93% and 93.27% in the month of August. The highest and least COD reduction was recorded as 96.84% and 90.19% in the same month. The highest and lowest TDS reduction was recorded at 96.53% and 91.25% in the month of October. The highest and least COD reduction was recorded as 94.31% and 72.57% in the same month. SBR How to cite this paper: Reddy, S.R.S., Karnena, M.K., Yalakala, S. and Saritha, V. (2020) Biological Treatability of Low Total Dissolved Solids (LTDS) Using SBR as a Pre-Treatment for Reverse Osmosis. Journal of Water Resource and Protection, 12, 135-154. Journal of Water Resource and Protectionhas proved to be a promising solution for pre-treatment removing all substances that might result in membrane fouling. Hence, the present study concludes that a combination of SBR and RO will be a promising solution for effective removal of TDS and COD from pharmaceutical wastewaters.

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Section: Sequencing Batch Reactormentioning

confidence: 99%

Biological Treatability of Low Total Dissolved Solids (LTDS) Using SBR as a Pre-Treatment for Reverse Osmosis

Reddy¹,

Karnena²,

Yalakala³

et al. 2020

JWARP

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“…The classic SBR control is performed with a fixed time cycle, which has the disadvantage that it does not allow the length cycle to be adjusted to compensate for the effect of process deviations and changes in the composition of the delivered wastewater. On the other hand, real-time control should provide greater flexibility to adjust the optimized control under different conditions [13]. Precise process control in real time requires feedback at least at the beginning and the end of the different biological reactions within the SBR.…”

Section: Kontrola Procesumentioning

confidence: 99%

“…Monitoring of parameters, such as pH, dissolved oxygen and redox potential, may successfully indicate reaction processes that occur during carbon and nitrogen removal in SBR processes [13]. Figure 6 shows the time dependence of these parameters during one typical conventional SBR cycle, as well as the concentration values of COD and various forms of nitrogen.…”

Section: Kontrola Procesumentioning

confidence: 99%

“…The redox potential is directly related to the nitrification rate and other biological reactions under aerobic or anaerobic conditions [13]. Under normal conditions, the redox potential is positive and increases in the aeration phase, and negative in the anaerobic phase.…”

Section: Kontrola Procesumentioning

confidence: 99%

“…In the anaerobic phase, the redox potential decreases with time; there is a steep slope, known as the nitrate knee, which signifies the end of denitrification, so Klasyczną kontrolę SBR przeprowadza się przy ustalonym cyklu czasowym, co ma tę wadę, że nie pozwala na dostosowanie cyklu długości w celu skompensowania wpływu odchyleń procesu i zmian w składzie dostarczanych ścieków. Z drugiej strony, sterowanie w czasie rzeczywistym powinno zapewnić większą elastyczność w celu dostosowania zoptymalizowanego sterowania w różnych warunkach [13]. Precyzyjna kontrola procesu w czasie rzeczywistym wymaga informacji zwrotnej przynajmniej na temat początku i końca różnych reakcji biologicznych zachodzących w ramach SBR.…”

Section: Kontrola Procesuunclassified

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Customized Microenvironments Spontaneously Facilitate Coupled Engineering of Real‐Life Large‐Scale Clean Water Capture and Pollution Remediation

et al. 2023

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Harnessing abundant renewable resources and pollutants on a large scale to address environmental challenges while providing sustainable freshwater is a significant endeavor. In this study, we present the design of fully functional solar vaporization devices (SVD) based on organic‐inorganic hybrid nanocomposites (CCMs‐x). These devices exhibit efficient photothermal properties that facilitate multi‐targeted interfacial reactions, enabling simultaneous catalysis of sewage and desalination. The localized interfacial heating generated by the photothermal effect of CCMs‐x triggers surface‐dominated catalysis and steam generation. The CCMs‐x SVD achieves a solar water‐vapor generation rate of 1.41 kg m−2 h−1 (90.8%), and it achieves over 95% removal of pollutants within 60 min under one‐sun for practical application. The exceptional photothermal conversion rate of wastewater for environmental remediation and water capture is attributed to customized microenvironments within the system. The integrated parallel reaction system in SVD ensures it a real‐life application in multiple scenarios such as municipal, medical wastewater and brine containing high concentrations. Additionally, the SVD exhibits long‐term durability, antifouling functionality toward complex ionic contaminants. This study not only demonstrates a One‐Stone‐Two‐Birds strategy for large scale directly producing the potable water from polluted seawater, but also open up to exciting possibilities of parallel production of energy and water resources.This article is protected by copyright. All rights reserved

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Sequencing Batch Reactor for Wastewater Treatment: Recent Advances

Cited by 105 publications

References 110 publications

Biological Treatability of Low Total Dissolved Solids (LTDS) Using SBR as a Pre-Treatment for Reverse Osmosis

Biological Treatability of Low Total Dissolved Solids (LTDS) Using SBR as a Pre-Treatment for Reverse Osmosis

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Customized Microenvironments Spontaneously Facilitate Coupled Engineering of Real‐Life Large‐Scale Clean Water Capture and Pollution Remediation

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