Textile Dyeing Wastewater Treatment in a Sequencing Batch Reactor System

Vives, Miquel; Balaguer, M. Dolors; Garcia, Santos N.; García, Ricardo; Colprim, Jesús

doi:10.1081/ese-120023335

Cited by 11 publications

(7 citation statements)

References 11 publications

(7 reference statements)

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“…In previous studies on textile wastewater treatment by SBR technology high HRT values were adopted (72, 36 or 30 h) (Lourenço et al 2001;Pasulcphun & Vinitnantharat 2003;Vives et al 2003;Sirianuntapiboon et al 2006). In addition, when available, OLRs lower than 1 kgCOD/(m'' d) were tested.…”

Section: Biological Treatmentmentioning

confidence: 99%

Is a sequencing batch biofilter granular reactor suitable for textile wastewater treatment?

Lotito

Fratino

Mancini

et al. 2012

Water Science and Technology

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The textile industry releases highly polluted and complex wastewaters, which are difficult to treat and require numerous treatment steps. Innovative technologies for on-site treatment at each factory would permit cost reduction. For this reason, we ran a laboratory-scale study to assess the suitability of a sequencing batch biofilter granular reactor (SBBGR) for textile wastewater treatment, testing four different types of wastewater. Results demonstrate that wastewater characteristics greatly affect the reactor efficiency. Hence, a pre-study is advisable to define the best operational conditions and the maximum treatment capability for the wastewater under analysis. Nevertheless, SBBGR is a valuable biological treatment, effective in the reduction of pollutant load with stable performances despite the variability in wastewater composition. Tests with ozone integration have demonstrated that it is possible to dose small quantities of ozone to obtain an effluent suitable for direct discharge. However, a dynamic ozone dosage should be used to optimize the process as the correct ozone dose strongly depends on the wastewater composition.

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Section: Biological Treatmentmentioning

confidence: 99%

Is a sequencing batch biofilter granular reactor suitable for textile wastewater treatment?

Lotito

Fratino

Mancini

et al. 2012

Water Science and Technology

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“…However, an SBR was successfully used to treat vat dyes from a Thai textile industry, removing 70% of the organic matter [9]. Similarly, a reduction in COD from approximately 1500 mg l − 1 to 300 mg l − 1 using a pilotscale SBR was observed in the treatment of another textile wastewater [10].…”

Section: Introductionmentioning

confidence: 97%

Treatment of Four Industrial Wastewaters by Sequencing Batch Reactors: Evaluation of Cod, TKN and Tp Removal

Fongsatitkul

Wareham

Elefsiniotis

2008

Environmental Technology

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This study investigated the ability of a sequencing batch reactor (SBR) system to treat four industrial wastewaters, namely, textile, landfill leachate, seafood and slaughterhouse effluents. The system employed three identical SBRs (10 l volume each) operating in parallel and each waste was treated one at a time. The operational variables examined included the length of the non-aerated period and the solids retention time (SRT). All four wastewaters experienced chemical oxyfen demand (COD) and total kjeldhal nitrogen (TKN) removals greater than 81%, while the TP removals were lower, ranging from 57 to 94%. The length of the non-aerated period appeared to have minimal effect on the SBR performance; however, increases in SRT reduced the percent TP removal for the textile and leachate wastes only. In addition, to investigate organic loading limits to the seafood SBR system, the COD was increased by three increments of 250 mg l(-1) starting from a baseline concentration of 1100 mg l(-1). This resulted in a reduction in both the TKN and TP removal at the higher concentrations. Finally, for the slaughterhouse wastewater, the COD:TKN ratio was tested at levels of 6:1, 8:1 and 9:1 with the result that only the TP removal was affected at the lowest ratio.

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“…The sequential batch reactor (SBR) is one of the main technologies for the biological treatment of wastewaters, being successfully used in urban wastewater [38,39], as in industrial wastewaters [40,41]. A SBR with anaerobic/oxic/anoxic configuration (ANA/OX/AN SBR) has been used for the removal of carbon and nitrogen.…”

Section: Introductionmentioning

confidence: 99%

Performance of Anoxic-Oxic Sequencing Batch Reactor for Nitrification and Aerobic Denitrification

Marin¹,

Caravelli²,

Zaritzky³

2019

Biotechnology and Bioengineering

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The biological nitrogen removal (BNR) involves two processes: nitrification and denitrification. Denitrification occurs almost exclusively under facultative anaerobic or microaerophilic conditions; however, aerobic denitrification can occur in aerated reactors. In this chapter, the feasibility of achieving nitrogen removal using a lab-scale biological sequencing batch reactor (SBR) exposed to anoxic/oxic (AN/OX) phases is described in order to attain aerobic denitrification. The SBR was fed with acetate and ammonium sulfate. Nitrite generation was controlled in order to avoid the N 2 O production by nitrifier denitrification. Experiments under four different operating conditions were carried out: low and high aeration, each one with low and high organic loads. For all the tested conditions, a complete COD removal was achieved. The highest inorganic N removal close to 80% was obtained at pH = 7.5, high organic load (880 mg COD/(L day)) and high aeration given by 12 h cycle, AN/OX ratio = 0.5:1.0, and dissolved oxygen concentration higher than 4.0 mg O 2 /L. Nitrification followed by high-rate aerobic denitrification took place during the aerobic phase. Denitrification took place mainly from the intracellular reserves of polyhydroxyalkanoates (PHA) during the aerobic phase. The proposed AN/OX system constitutes a simple and potentially eco-friendly process for biological nitrogen removal, providing N 2 as the end product and decreasing the formation of N 2 O, a powerful greenhouse gas.

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Textile Dyeing Wastewater Treatment in a Sequencing Batch Reactor System

Cited by 11 publications

References 11 publications

Is a sequencing batch biofilter granular reactor suitable for textile wastewater treatment?

Is a sequencing batch biofilter granular reactor suitable for textile wastewater treatment?

Treatment of Four Industrial Wastewaters by Sequencing Batch Reactors: Evaluation of Cod, TKN and Tp Removal

Performance of Anoxic-Oxic Sequencing Batch Reactor for Nitrification and Aerobic Denitrification

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