GAC-Amended UASB Reactor for the Stable Treatment of Toxic Textile Wastewater

Kuai, Linping; Vreese, Ilse De; Vandevivere, Philippe; Verstraete, Willy

doi:10.1080/09593331908616769

Cited by 35 publications

(10 citation statements)

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“…(2014) [1][2][3][4][5][6][7][8][9][10][11][12] www.deswater.com doi: 10.1080/19443994.2014.888687 techniques like sonochemical or advanced oxidation processes are normally used for treating the textile wastewater [4]. However, each of them has some limitations and drawbacks in their applications.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Carbonaceous organics removal kinetics in an upflow anaerobic sludge blanket (UASB) reactor treating physico-chemically pre-treated textile wastewater

Verma¹,

Bhunia²,

Dash

2015

Desalination and Water Treatment

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In the present study, physico-chemically pre-treated textile wastewater with a residual chemical oxygen demand (COD) of 780 ± 10 mg L −1 was treated using a lab-scale upflow anaerobic sludge blanket (UASB) reactor at variable HRTs of 30.8 to 8 h, and organic loading rates (OLRs) of 0.62-2.4 kg COD m −3 d −1 . Using a new composite coagulant at dosage of 800 mg L −1 for pre-treatment, more than 99% of colour was removed from the feeding influent to UASB reactor. The optimum OLR was found as 0.95 kg COD m −3 d −1 at which maximum COD reduction (98%) was achieved. Modified Stover-Kincannon, Grau second-order, Monod, Haldane and Contois models were applied to evaluate the carbonaceous substrate removal kinetics inside the UASB reactor. The experimental results of this analysis revealed that modified Stover-Kincannon and Grau second-order kinetics were suitable for predicting the performance and to estimate the kinetic coefficients of UASB reactor.

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Section: Desalination and Water Treatmentmentioning

confidence: 99%

Carbonaceous organics removal kinetics in an upflow anaerobic sludge blanket (UASB) reactor treating physico-chemically pre-treated textile wastewater

Verma¹,

Bhunia²,

Dash

2015

Desalination and Water Treatment

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“…3 The oxygen consumption and sludge yield are generally high and result in high operational costs. 4 Moreover, aerobic processes are in effective in degrading azo dyes, which are the largest group of synthetic colorants (60-70%). 5 Highly electrophilic azo bonds can be cleaved under anaerobic conditions, and the aromatic amines produced from this cleavage can be removed in aerobic environments.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic/aerobic sequential treatment of a cotton textile mill wastewater

Işık

Sponza

2004

J of Chemical Tech & Biotech

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The treatment of a wastewater taken from a cotton textile mill was investigated using an anaerobic/aerobic sequential system during an operational period of 87 days. The process units consisted of an upflow anaerobic sludge blanket (UASB) reactor and a continuous stirred tank reactor (CSTR). Wastewater characterization was performed before feeding the reactor system. Glucose-COD, and azo dyes were added to the textile wastewater for comparative purposes in the final period of operation. The pH values in the effluent of the UASB reactor were suitable for optimal anaerobic treatment in all runs. The biodegradable part of the COD in wastewater was removed effectively, with the anaerobic stage improving the biodegradability of wastewater entering the aerobic stage. The UASB reactor permitted COD and color removals of 9-51% and 46-55%, respectively, at a hydraulic retention time (HRT) of 30 h. COD removal efficiencies were between 40 and 85% and color removal efficiencies were 39-81% in normal and artificially-colored wastewaters at a total HRT of 5.75 days in the UASB/CSTR reactor system. Benzidine produced from the cleavage of azo bond in the anaerobic stage was effectively removed in the aerobic stage, and was identified by comparison of its HPLC spectrum with that of an authentic specimen.

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“…in wet processes of textile mill. Same types of contaminations were found, while investigating textile wastewater (Kuai et al, 1998;Bisschops and Spanjers, 2003).…”

Section: Experimental Designmentioning

confidence: 93%

Comparison of naturally prepared coagulants for removal of COD and color from textile wastewater

Patel¹,

Vashi²

2013

Global NEST Journal

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The wastewater generated by the textile industry is rated as the most polluting among all industrial sectors considering both volumes discharged and effluent composition. Present investigation intended for COD and color removal from textile wastewater using naturally prepared coagulants i.e. Surjana Seed Powder (SSP), Maize Seed Powder (MSP) and Chitosan. Effect of coagulant dose, flocculation time and temperature has been studied. The Sludge Volume Index (SVI) and turbidity were examined for various effects. SSP was more effective than Chitosan and MSP for the removal of COD and color and also, Chitosan was more efficient than SSP and MSP considering SVI and turbidity. Maximum percentage reduction corresponds to 75.6 and 62.8 was obtained for removal of COD and color respectively, using SSP.

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GAC-Amended UASB Reactor for the Stable Treatment of Toxic Textile Wastewater

Cited by 35 publications

References 0 publications

Carbonaceous organics removal kinetics in an upflow anaerobic sludge blanket (UASB) reactor treating physico-chemically pre-treated textile wastewater

Carbonaceous organics removal kinetics in an upflow anaerobic sludge blanket (UASB) reactor treating physico-chemically pre-treated textile wastewater

Anaerobic/aerobic sequential treatment of a cotton textile mill wastewater

Comparison of naturally prepared coagulants for removal of COD and color from textile wastewater

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