Direct Membrane Filtration for Wastewater Treatment Using an Intermittent Rotating Hollow Fiber Module

Ruigómez, Ignacio; Cabrera, E; Gómez, Luis Enrique Rodríguez; Vera, Luisa

doi:10.3390/w12061836

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…These treatment methods have their own advantages and disadvantages. Although membrane filtration systems are quite efficient in removing most wastewater pollutants, these systems are relatively expensive because they require high pressure [6]. Filtration with natural zeolite can be used as an alternative method to remove total suspended solids from textile wastewater [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cotton Bleaching Methods on the Parameters of Generated Textile Industrial Wastewater

Uğur,

Karaboyacı,

Boguniewicz-Zablocka

2023

Sustainability

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The environmental impact of industrial wastewater after bleaching requires special attention to prevent the pollution of aquatic ecosystems. The aim of this study was to compare the effluent parameters obtained after using a traditional bleaching method and an alternative enzymatic bleaching method in order to assess their possible environmental impacts. In the classical bleaching method, NaOH and H2O2 were used, and in the alternative method, pectinase enzyme, H2O2, and sodium carbonate were used as the bleaching agents. The bleaching process was designed by determining the optimum amount of pectinase enzyme, the optimum temperature, and the optimum amount of peroxide. The whiteness of the treated cotton yarns was also evaluated. The different bleaching processes were analyzed and evaluated in terms of the wastewater discharged, the pH, chemical oxygen demand (COD), total dissolved solids (TDS), total suspended solids (TSS), and conductivity. These data show that the use of the pectinase enzyme allows us to obtain much lower COD and TSS values compared to those obtained using traditional bleaching. At the same time, the use of the proposed enzymatic bleaching method reduces the environmental impact since lower concentrations of pollutants are obtained in the effluent. Therefore, the pretreatment of wastewater may require the selection of a simpler and more environmentally friendly technology, such as enzymatic bleaching.

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Section: Introductionmentioning

confidence: 99%

Influence of Cotton Bleaching Methods on the Parameters of Generated Textile Industrial Wastewater

Uğur,

Karaboyacı,

Boguniewicz-Zablocka

2023

Sustainability

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“…These membranes can be incorporated into the biological wastewater treatment process, either as a separate unit or as an operation following the biological step [14]. For instance, Ruigómez et al [15] investigated the application of intermittent rotating hollow fiber modules in direct membrane filtration for wastewater treatment. The results revealed a significant augmentation in flux, demonstrating a direct correlation between threshold flux (ranging between 12 and 32 L•h −1 •m −2 ) and rotational velocity.…”

Section: Introductionmentioning

confidence: 99%

Biofilm-Enhanced Natural Zeolite Material in Purification Performance for Slaughterhouse Wastewater

Mkilima,

Meiramkulova,

Kydyrbekova

et al. 2023

Water

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This study focuses on evaluating the efficacy of biofilm-enhanced natural zeolite for the purification of slaughterhouse wastewater. The investigation encompasses four distinct treatment methods: employing natural zeolite without biofilm, integrating biofilm into 1–2 mm particle size natural zeolite, enhancing biofilm in less than 4 mm particle size natural zeolite, and introducing biofilm in less than 8 mm particle size natural zeolite. The outcomes underscore the substantial improvement brought about by biofilm incorporation. For instance, within the natural zeolite treatment system without biofilm, the final effluent retained 28 NTU of turbidity. In contrast, utilizing the <8 mm particle size with biofilm resulted in 3.2 NTU of turbidity in the treated effluent, 2.45 NTU for the <4 mm particle size with biofilm, and 1.02 NTU for the 1–2 mm particle size zeolite system with biofilm. Notably, the achieved removal rates were significant, reaching 79.88% for natural zeolite without biofilm, 97.69% for the <8 mm particle size with biofilm, 99.27% for the <4 mm particle size with biofilm, and 98.24% for the 1–2 mm particle size zeolite system with biofilm. It is noteworthy that the removal efficiencies varied from 50 to 100% for wastewater samples subjected to the treatment system without biofilm, 65.7–100% with the <8 mm particle size biofilm, 71.4–100% with the <4 mm particle size biofilm, and 71.7–100% with the 1–2 mm particle size zeolite system biofilm. These findings collectively emphasize the pivotal role of biofilm in enhancing treatment outcomes, presenting a promising avenue for optimizing wastewater treatment efficiency.

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“…However, each of the treatment methodologies possesses advantages (strengths) and disadvantages (weaknesses). For instance, physical wastewater treatments, such as membrane filtration systems [9,10], are seen as highly efficient in removing most wastewater pollutants but are extremely pressure-demanding systems, making them relatively expensive. Biological or natural treatment approaches, on the other hand, are well-known for their high adaptability to a wide variety of wastewater compositions [11]; however, these systems are relatively slow processes requiring large physical areas [12].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Column Depth on the Treatment of Textile Wastewater Using Natural Zeolite

et al. 2021

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Textile industry production processes generate one of the most highly polluted wastewaters in the world. Unfortunately, the field is also challenged by the availability of relatively cheap and highly effective technologies for wastewater purification. The application of natural zeolite as a depth filter offers an alternative and potential approach for textile wastewater treatment. The performance of a depth filter treatment system can be deeply affected by the column depth and the characteristics of the wastewater to be treated. Regrettably, the information on the potential of these filter materials for the purification of textile wastewater is still scarce. Therefore, this study investigated the potential applicability of natural zeolite in terms of column depth for the treatment of textile wastewater. From the analysis results, it was observed that the filtration efficiencies were relatively low (6.1 to 13.7%) for some parameters such as total dissolved solids, electrical conductivity, chemical oxygen demand, and sodium chloride when the wastewater samples were subjected to the 0.5 m column depth. Relatively high efficiency of 82 and 93.8% was observed from color and total suspended solids, respectively, when the wastewater samples were subjected to the 0.5 m column depth. Generally, the 0.75 m column depth achieved removal efficiencies ranging from 52.3% to 97.5%, whereas the 1 m column depth achieved removal efficiencies ranging from 86.9% to 99.4%. The highest removal efficiency was achieved with a combination of total suspended solids and 1 m column depth (99.4%). In summary, the treatment approach was observed to be highly effective for the removal of total suspended solids, with a 93.8% removal efficiency when the wastewater was subjected to the 0.5 m column depth, 97.5% for 0.75 m column depth, and 99.4% for 1 m column depth. Moreover, up to 218.233 mg of color per g of the filter material was captured. The results derived in this study provide useful information towards the potential applicability of natural zeolite in the textile wastewater treatment field.

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Direct Membrane Filtration for Wastewater Treatment Using an Intermittent Rotating Hollow Fiber Module

Cited by 6 publications

References 41 publications

Influence of Cotton Bleaching Methods on the Parameters of Generated Textile Industrial Wastewater

Influence of Cotton Bleaching Methods on the Parameters of Generated Textile Industrial Wastewater

Biofilm-Enhanced Natural Zeolite Material in Purification Performance for Slaughterhouse Wastewater

Investigating the Influence of Column Depth on the Treatment of Textile Wastewater Using Natural Zeolite

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