Biological treatment of thin-film transistor liquid crystal display (TFT-LCD) wastewater using aerobic and anoxic/oxic sequencing batch reactors

Lei, C. N.; Whang, Liang Ming; Chen, Po Chun

doi:10.1016/j.chemosphere.2010.07.001

Cited by 79 publications

(18 citation statements)

References 33 publications

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“…Apart from the treatment of the toxicant, due to excessive demands to reduce TFT-LCD production cost, improvements of the wastewater treatment system is also highly desired. From this awareness the anaerobic process was pointed out to outcompete with conventional activated sludge processes, with which could reduce expenses for aeration and waste sludge treatment [10,11]. For treating the medium-strength TMAH wastewater using the anaerobic process, an up-flow anaerobic sludge blanket process (UASB process) was recently demonstrated in a full-scale plant in Taiwan [2,7,8].…”

Section: N][oh]mentioning

confidence: 99%

Kinetic analysis of biological degradation for tetramethylammonium hydroxide (TMAH) in the anaerobic activated sludge system at ambient temperature

Liu

Yoshinaga

et al. 2016

Biochemical Engineering Journal

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Section: N][oh]mentioning

confidence: 99%

Kinetic analysis of biological degradation for tetramethylammonium hydroxide (TMAH) in the anaerobic activated sludge system at ambient temperature

Liu

Yoshinaga

et al. 2016

Biochemical Engineering Journal

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“…SBR has been successfully applied for wastewater with high nitrogen content and low COD such as anaerobic SBR (ASBR)-based simultaneous partial nitrification, anaerobic ammonium oxidation, and denitrification (SNAD) system that was applied to treat the opto-electronic industrial wastewater with C/N ratio of nearly 0.2 [95••]. A similar study was performed by [96] for the treatment of wastewater from production of thin-film transistor liquid crystal display (TFT-LCD) which contained chemicals like dimethyl sulfoxide (DMSO), monoethanolamine (MEA), and tetra-methyl ammonium hydroxide (TMAH). Two different SBR systems, aerobic and anoxic/oxic (A/O), were used.…”

Section: Recent Developments In the Application Of Sbrmentioning

confidence: 85%

Sequencing Batch Reactor for Wastewater Treatment: Recent Advances

2015

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Sequencing batch reactors (SBRs), due to its operational flexibility and excellent process control possibilities, are being extensively used for the treatment of wastewater which nowadays is fast becoming contaminated with newer and more complex pollutants. It is also possible to include different expanding array of configurations and various operational modifications to meet the effluent limits which are also continuously getting upgraded. This article provides basic description of SBR process along with its functional and physical variants that lead to improved the removal of nutrients and emerging contaminants. The significance of selectors and various recent advancements in the application of SBR has been discussed along with the possibilities held by SBR process in the treatment of wastewater of different origins and composition to produce effluent of reusable quality.

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“…[6] However, inorganic end products such as ammonium (NH + 4 ), nitrite (NO − 2 ), and nitrate (NO − 3 ) ions may persist. In this study, the capability of MPR in decomposing TFT-LCD waste water was assessed by observing variations in MEA and ammonium ions.…”

Section: Effect Of Uv Irradiation Ph and Photocatalyst Loading On Mprmentioning

confidence: 99%

“…However, organic and inorganic nitrogen species are not always satisfactorily reduced. [1,6] Alternative treatment techniques such as anaerobic treatment, [7] chemical catalysis, [8] and the Fenton process [9] have been *Corresponding author. Email: sjyou@cycu.edu.tw explored, but they are also incapable of complete nitrogen removal and/or incur a much greater cost than biological treatment.…”

Section: Introductionmentioning

confidence: 99%

Combined photocatalysis and membrane bioreactor for the treatment of feedwater containing thin film transistor-liquid crystal display discharge

You

Semblante

Chen

et al. 2015

Environmental Technology

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The nitrogen content of waste water generated by the thin film transistor-liquid crystal display (TFT-LCD) industry is not satisfactorily removed through the conventional aerobic-activated sludge process. In this study, the performance of three reactors – suspended type TiO2 membrane photoreactor (MPR), anoxic/oxic membrane bioreactor (AOMBR), and their combination (MPR-AOMBR) – was evaluated using feedwater containing TFT-LCD discharge. The parameters that maximized monoethanolamine (MEA) removal in the MPR were continuous ultraviolet (UV) irradiation and pH 11. Among the tested loadings, 0.1 g/l of TiO2 promoted MEA removal but degradation rate may further increase with photocatalyst concentration. The nitrified sludge recycle ratio R of the AOMBR was adjusted to 1.5 to minimize the amount of nitrate in the effluent. The AOMBR greatly decreased chemical oxygen demand and MEA, but removed only 32.7% of tetramethyl ammonium hydroxide (TMAH). The MPR was configured as the pre-treatment unit for AOMBR, and the combined MPR-AOMBR has improved TMAH removal by 80.1%. The MPR bolstered performance by decomposing slowly biodegradable compounds, and had no negative effects on denitrification and carbon removal.

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Biological treatment of thin-film transistor liquid crystal display (TFT-LCD) wastewater using aerobic and anoxic/oxic sequencing batch reactors

Cited by 79 publications

References 33 publications

Kinetic analysis of biological degradation for tetramethylammonium hydroxide (TMAH) in the anaerobic activated sludge system at ambient temperature

Kinetic analysis of biological degradation for tetramethylammonium hydroxide (TMAH) in the anaerobic activated sludge system at ambient temperature

Sequencing Batch Reactor for Wastewater Treatment: Recent Advances

Combined photocatalysis and membrane bioreactor for the treatment of feedwater containing thin film transistor-liquid crystal display discharge

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