On-site treatment of textile yarn dyeing effluents using an integrated biological–chemical oxidation process

Lotito, Adriana Maria; Sanctis, Marco De; Rossetti, Simona; Lopez, A.; Iaconi, Claudio Di

doi:10.1007/s13762-013-0271-7

Cited by 17 publications

(5 citation statements)

References 36 publications

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“…The CAS system has disadvantages such as high hydraulic retention time (HRT), problems with sludge settling, requirement of large space [7], and poor color removal efficiency due to the low biodegradability of dyes which can only be partially adsorbed on biomass [8][9][10]. Hence, a tertiary physicochemical method is usually required to give a better treatment performance [3,11], which will increase the cost of the process.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Textile Wastewater by CAS, MBR, and MBBR: A Comparative Study from Technical, Economic, and Environmental Perspectives

Yang

López‐Grimau

Vilaseca

et al. 2020

Water

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In this study, three different biological methods—a conventional activated sludge (CAS) system, membrane bioreactor (MBR), and moving bed biofilm reactor (MBBR)—were investigated to treat textile wastewater from a local industry. The results showed that technically, MBR was the most efficient technology, of which the chemical oxygen demand (COD), total suspended solids (TSS), and color removal efficiency were 91%, 99.4%, and 80%, respectively, with a hydraulic retention time (HRT) of 1.3 days. MBBR, on the other hand, had a similar COD removal performance compared with CAS (82% vs. 83%) with halved HRT (1 day vs. 2 days) and 73% of TSS removed, while CAS had 66%. Economically, MBBR was a more attractive option for an industrial-scale plant since it saved 68.4% of the capital expenditures (CAPEX) and had the same operational expenditures (OPEX) as MBR. The MBBR system also had lower environmental impacts compared with CAS and MBR processes in the life cycle assessment (LCA) study, since it reduced the consumption of electricity and decolorizing agent with respect to CAS. According to the results of economic and LCA analyses, the water treated by the MBBR system was reused to make new dyeings because water reuse in the textile industry, which is a large water consumer, could achieve environmental and economic benefits. The quality of new dyed fabrics was within the acceptable limits of the textile industry.

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Section: Introductionmentioning

confidence: 99%

Treatment of Textile Wastewater by CAS, MBR, and MBBR: A Comparative Study from Technical, Economic, and Environmental Perspectives

Yang

López‐Grimau

Vilaseca

et al. 2020

Water

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“…For example, the photo-Fenton process has been combined with biological treatment to treat water polluted by pesticides (Vilar et al 2012), and to improve the biodegradability index of organic effluents in order to enhance the efficiency of biochemical treatment (Asha et al 2014). Lotio et al (2014) were concerned about the ozonation process coupled with biological process to remove color, COD, and total nitrogen of textile yarn dyeing effluents. To the best of our knowledge, there is no report of attempts to use glidarc plasma/biodegradation coupling for the bleaching and degradation of organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Gliding arc discharge-assisted biodegradation of crystal violet in solution with Aeromonas hydrophila strain

Njiki

Kamgang‐Youbi

Laminsi

et al. 2015

Int. J. Environ. Sci. Technol.

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The gliding arc discharge, which is a source of nonthermal plasma, was used to enhance the biodegradation of crystal violet (CV), a triphenylmethane nonbiodegradable organic dye. The determination of the biodegradability index, i.e., biochemical oxygen demand (BOD 5 )/chemical oxygen demand (COD) ratio, and the total organic carbon measurement were used to assess the biodegradability. For the biological treatment alone, a bacterial strain of Aeromonas hydrophila (8 9 10 8 -CFU mL -1 ) bleached 42 % of CV solution (50 mg L -1 ) after 12-h incubation. The bleaching rate was enhanced by increasing the initial bacterial concentration; however, a drop in the bleaching rate was noted when CV concentration was increased. For the plasma process alone, a 15-min treatment resulted in a color removal of 49.7 %, at a mineralization rate of 12.2 %, thereby increasing the BOD 5 /COD ratio from 0.11 to 0.23. There was an increase in the bleaching rate in temporal post-discharge conditions (i.e., self-continuity of reaction after the discharge was switched off): For 2 h of temporal post-discharge reaction, the color removal of the 15-min plasma-pre-treated CV increased to 55 %. The disappearance of color during each treatment method followed the first-order kinetics. With regard to the combined plasma/biological treatment process, the 15-min plasma-pre-treated sample was bleached at 92 % by A. hydrophila after 2-h incubation and completely bleached for 6 h. Therefore, there is a positive synergism of bacterial and plasma treatments. This combined treatment is useful in reducing the energy involved in complete mineralization of wastewater containing nonbiodegradable dyes.

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“…The main environmental concerns in the textile industry are about the amount of water discharged and chemical load it carries [4]. The wastewater produced during the production of yarns and fabrics contains a diverse range of chemicals and dyes [5]. The textile industry is water intensive.…”

Section: Introductionmentioning

confidence: 99%

Study of Blended Waste Organic Extracts in Wastewater Treatment

Veeramalini¹,

Bharathiraja²,

Vinayak³

et al. 2019

Asian J. Chem.

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In present work, water treatment processes is carried out by an affordable, readily usable and non-chemical method. This study involved the process of water may reduce the concentration of particulate matter that includes suspended particles, micro organisms, a range of dissolved and particulate material derived from the surfaces. The substances used in this work were coarsely blended with each other and a special composite fibre filter was made. Several processes variables of quality of waste are also measured before and after the treatment. Results show that the water quality has been enriched in several ways such as reduction in the dissolved solids, pH has been controlled, deodorization and prevention of microbial growth. Hence use of this work has been utilized as a “Homemaker Model” and act as an alternative method for wastewater treatment in a cost effective way.

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On-site treatment of textile yarn dyeing effluents using an integrated biological–chemical oxidation process

Cited by 17 publications

References 36 publications

Treatment of Textile Wastewater by CAS, MBR, and MBBR: A Comparative Study from Technical, Economic, and Environmental Perspectives

Treatment of Textile Wastewater by CAS, MBR, and MBBR: A Comparative Study from Technical, Economic, and Environmental Perspectives

Gliding arc discharge-assisted biodegradation of crystal violet in solution with Aeromonas hydrophila strain

Study of Blended Waste Organic Extracts in Wastewater Treatment

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