Status and needs for online control of tertiary ozone-based water treatment: use of surrogate correlation models for removal of trace organic contaminants

Deniere, Emma; Chys, Michael; Audenaert, Wim; Langenhove, Herman Van; Demeestere, Kristof

doi:10.1007/s11157-021-09574-0

Cited by 8 publications

(12 citation statements)

References 118 publications

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“…Ozone is a powerful oxidant used for the disinfection of drinking water and the treatment of industrial wastewaters [7]. Recently, full-scale ozone installations are also used in municipal WWTPs for the removal of TrOCs in secondary effluent [8,9]. Bulk organic matter and TrOCs can be removed via two different pathways: (i) direct oxidation with molecular ozone, and (ii) indirect oxidation with • OH that are produced as a result of ozone decomposition [3,7].…”

Section: Introductionmentioning

confidence: 99%

The ozone-activated peroxymonosulfate process (O3/PMS) for removal of trace organic contaminants in natural and wastewater: Effect of the (in)organic matrix composition

Deniere

Alagappan

Langenhove

et al. 2022

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

The ozone-activated peroxymonosulfate process (O3/PMS) for removal of trace organic contaminants in natural and wastewater: Effect of the (in)organic matrix composition

Deniere

Alagappan

Langenhove

et al. 2022

Chemical Engineering Journal

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“…Fluorescence and UV-VIS spectroscopy have been used in AOPs, particularly the ozonation reaction, as real-time surrogate parameters to indicate the removal rate of trace organic contaminants (TrOCs) from wastewater [150,157]. In wastewater, most dissolved organic matters (DOMs) having multiple conjugated double bonds, particularly hydrophobic and aromatic matters having a C=C and a C=O bond, absorb UV light well at the wavelength of 254 nm.…”

Section: Soft Sensorsmentioning

confidence: 99%

Dynamic Modelling, Process Control, and Monitoring of Selected Biological and Advanced Oxidation Processes for Wastewater Treatment: A Review of Recent Developments

Parsa,

Dhib,

Mehrvar

2024

Bioengineering

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This review emphasizes the significance of formulating control strategies for biological and advanced oxidation process (AOP)-based wastewater treatment systems. The aim is to guarantee that the effluent quality continuously aligns with environmental regulations while operating costs are minimized. It highlights the significance of understanding the dynamic behaviour of the process in developing effective control schemes. The most common process control strategies in wastewater treatment plants (WWTPs) are explained and listed. It is emphasized that the proper control scheme should be selected based on the process dynamic behaviour and control goal. This study further discusses the challenges associated with the control of wastewater treatment processes, including inadequacies in developed models, the limitations of most control strategies to the simulation stage, the imperative requirement for real-time data, and the financial and technical intricacies associated with implementing advanced controller hardware. It is discussed that the necessity of the availability of real-time data to achieve reliable control can be achieved by implementing proper, accurate hardware sensors in suitable locations of the process or by developing and implementing soft sensors. This study recommends further investigation on available actuators and the criteria for choosing the most appropriate one to achieve robust and reliable control in WWTPs, especially for biological and AOP-based treatment approaches.

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“…During oxidative water treatments, dissolved organic matter (DOM) serves as not only the primary sink for the dosed oxidant , but also the primary precursor of DBPs. − Previous studies have shown that changes of DOM characteristics closely correlate with DBP formation, , and the redox-active moieties of DOM compete directly for the oxidant against MPs. − Therefore, monitoring the changes in DOM characteristics induced by oxidation is a feasible way to determine the appropriate oxidant dosage. , Currently, the surrogate indicators commonly employed to optimize the oxidant dosage include the dissolved organic carbon (DOC), UV absorbance at 254 nm (UV 254 ), and fluorescence index (FI). ,,, However, DOC cannot effectively indicate MP abatement and DBP formation due to limited organic mineralization. , In addition, although the spectroscopic surrogate indicators (UV 254 and FI) have been extensively adopted in oxidative water treatments − and correlate well with MP abatement and DBP formation in lab-scale and full-scale experiments, ,,− they just reflect the changes in the chromophoric moieties of DOM. Therefore, it is necessary to develop a new surrogate indicator to enhance the precision, reliability, and robustness of existing control systems for oxidative water treatments.…”

Section: Introductionmentioning

confidence: 99%

Electron Donating Capacity: A Promising Surrogate Indicator for the Optimization of Oxidative Water Treatments

Ji,

Dong,

Wang

et al. 2024

ACS EST Water

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The redox-active moieties of dissolved organic matter (DOM) significantly influence the degradation of pollutants in oxidative water treatments. Because electron donating capacity (EDC) directly probes the redox properties of DOM, it tends to be a promising surrogate indicator to reflect changes in the DOM oxidation state. Given the complexity of applying EDC to optimizing oxidation processes, this review summarizes a history of advances in EDC analytical methods and discusses key factors for the standardization of EDC measurement. The EDC and UV 254 reductions induced by chemical oxidation are summarized to develop tailored water treatment control strategies. In addition, the applicability of EDC to indicate micropollutant abatement and disinfection byproduct formation is evaluated. Oxidative water treatments with chlorine, chlorine dioxide, permanganate, and ferrate yield a more pronounced reduction in EDC than in UV 254 due to the formation of quinone moieties, while ozonation causes a comparatively smaller EDC reduction but a larger UV 254 reduction. For oxidative water treatments in which the oxidant dosage is difficult to predict, EDC could serve as a promising surrogate indicator to meet treatment goals.

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Status and needs for online control of tertiary ozone-based water treatment: use of surrogate correlation models for removal of trace organic contaminants

Cited by 8 publications

References 118 publications

The ozone-activated peroxymonosulfate process (O3/PMS) for removal of trace organic contaminants in natural and wastewater: Effect of the (in)organic matrix composition

The ozone-activated peroxymonosulfate process (O3/PMS) for removal of trace organic contaminants in natural and wastewater: Effect of the (in)organic matrix composition

Dynamic Modelling, Process Control, and Monitoring of Selected Biological and Advanced Oxidation Processes for Wastewater Treatment: A Review of Recent Developments

Electron Donating Capacity: A Promising Surrogate Indicator for the Optimization of Oxidative Water Treatments

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