Spinning Disc Technology – Residence Time Distribution and Efficiency in Textile Wastewater Treatment Application

Iacob-Tudose, Eugenia Teodora; Zaharia, Carmen

doi:10.1088/1757-899x/374/1/012037

Cited by 2 publications

(6 citation statements)

References 9 publications

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“…All the acquired values are relatively high, with the highest registered turbidity removal of 65.69%. Preliminary studies indicated higher removal values for the WW turbidity than for the WW color [32]. Thus, larger ranges of the effluent flowrate and disc rotational speed were investigated to assess the SD effectiveness with respect to the WW turbidity.…”

Section: Ww Flowrate Effect On the Treatment Efficiency Using The Laboratory Sd Setupmentioning

confidence: 99%

“…Color determination. A standard method (SR ISO 7887/97) was used where the color is expressed by absorbance under the blank (distilled water) at three different wavelengths, i.e., 436, 525 and 620 nm; for industrial wastewaters, the absorbance at 436 nm is preferred [15,31,32]. Furthermore, the color can be expressed by the Hazen color index (i.e., an absorbance value of 0.069 at 456 nm corresponds to 50 Hazen units (HU)) [32].…”

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confidence: 99%

“…All other effluent characteristics (e.g., COD Cr , BOD 5 , phenols) were analyzed by using specific standard analysis methods described in other author reports and standards catalogue [15,26,32].…”

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confidence: 99%

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Textile Wastewater Treatment in a Spinning Disc Reactor: Improved Performances—Experimental, Modeling and SVM Optimization

et al. 2021

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The paper presents an experimental study regarding the treatment of a real textile wastewater using the spinning disc (SD) technology, either individually or associated with an advanced Fenton oxidation step. The SD efficiency was investigated by studying the color, suspended solids, or turbidity removals, at distinctive feeding flowrates (10–30 L/h) and disc rotating speeds (100–1500 rpm). The data revealed increasing removal trends and allowed to establish the highest removal values. Based on obtained experimental results, the wastewater treatment efficiency by SD technology was reasonably good and thus, the WW indicators can be improved within relatively short periods of time. Additionally, based on supervised learning algorithms, the study includes treatment modeling for turbidity and color removal, followed by turbidity removal optimization relying on the best learned models. Satisfactory results obtained with the modeling and optimization procedures provide useful predictions for the approached treatment processes. Furthermore, within this study, a Fenton oxidation process was applied to SD technology to minimize the color and solids content. The influence of pH, hydrogen peroxide and ferrous ions concentrations was also investigated in order to establish the highest removal efficiencies. Overall, the SD technology applied in textile effluents treatment proved to be an appropriate and efficient alternative to classical mechanical step applied within the primary treatment step and, when associated with an advanced oxidative process in the secondary step, rendered good improvement, namely of 62.84% and 69.46% for color and respectively, suspended solids removal.

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Section: Ww Flowrate Effect On the Treatment Efficiency Using The Laboratory Sd Setupmentioning

confidence: 99%

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confidence: 99%

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Textile Wastewater Treatment in a Spinning Disc Reactor: Improved Performances—Experimental, Modeling and SVM Optimization

et al. 2021

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“…All the experiments were performed in the experimental setup presented in Figure 1 [6]. A rotating disc 1 with a diameter of 20 cm and thickness of 4 mm, connected to an electric motor 2, with a variable adjustable speed, was encapsulated in an acrylic housing 3.…”

Section: Experimental Laboratory Setupmentioning

confidence: 99%

“…The working principle of the SD relies on centrifugal force acting on the liquid fed at the center of a spinning disc [6], resulting in a rippled thin liquid film characterized by an advanced turbulence and a high mixing intensity, which enables increased transport phenomena such as heat and mass transfers.…”

Section: Introductionmentioning

confidence: 99%

Textile Wastewater Treatment on a Spinning Disc Reactor: Characteristics, Performances, and Empirical Modeling

Iacob-Tudose

Zaharia

2020

Applied Sciences

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Spinning disc (SD) technology has been successfully applied, for the first time, in real textile wastewater treatment with no other additional processing. The SD efficiency was investigated using real textile effluents to study the color and suspended solids removals at different effluent-supplying flowrates (10–30 L/h) and different disc rotational speeds (100–1500 rpm) with good experimental results; thus, it can minimize the polluting loads within a short time period. Furthermore, within this study, process modeling and its classical optimization were applied to SD technology for wastewater treatment. The experiments were organized according to an active central composite rotatable 23 order design, considering as independent variables the wastewater flowrate, rotational speed, and operating time and, as optimization criteria, the suspended solids removal and discoloration degree. Overall, this novel study proved that the SD technology applied in textile effluent treatment is a suitable alternative to a primary mechanical step.

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Spinning Disc Technology – Residence Time Distribution and Efficiency in Textile Wastewater Treatment Application

Cited by 2 publications

References 9 publications

Textile Wastewater Treatment in a Spinning Disc Reactor: Improved Performances—Experimental, Modeling and SVM Optimization

Textile Wastewater Treatment in a Spinning Disc Reactor: Improved Performances—Experimental, Modeling and SVM Optimization

Textile Wastewater Treatment on a Spinning Disc Reactor: Characteristics, Performances, and Empirical Modeling

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