Biological sulfate removal from acrylic fiber manufacturing wastewater using a two-stage UASB reactor

Li, Jin; Wang, Jun; Luan, Zhaokun; Ji, Zhongguang; Yu, Lian

doi:10.1016/s1001-0742(11)60772-9

Cited by 30 publications

(14 citation statements)

References 31 publications

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“…However, the condition IV shows a decrease in COD and sulfate removal, the latter with a significant decrease (19%). Li et al 10 reported a decrease when the COD/[SO 4 2− ] was about 0.67. Weijma et al 21 also reported a low sulfate removal and COD efficiency removal above 90% with a COD/[SO 4 2− ] ratio of 0.66.…”

Section: Resultsmentioning

confidence: 99%

“…Li et al 10 reports that the decrease in efficiency of removal with COD/[SO 4 2− ] near 0.67 was associated with the low carbon source. For these low ratios, there was not sufficient electron donors for sulfate reduction and the SRB had its growth limited, as a consequence, there was a decrease in the sulfate and COD removal.…”

Section: Resultsmentioning

confidence: 99%

“…Damianovic and Foresti, 9 studying a horizontal anaerobic fixed bed reactors (HAIB), observed that the sulfate removal (SR) efficiency increased from COD/[SO 4 2− ] ratio 1.7 to 4.9 (from 90 to 97%) while the COD removal efficiency remained stable (>90.0%). Li et al 10 also reported a removal efficiency of 71 and 92% to the OM and sulfate removal, respectively, at a COD/[SO 4 2− ] ratio of 4.3 in an upflow anaerobic sludge blanket (UASB) reactor. Callado and Foresti 11 observed that the COD/[SO 4 2− ] ratio was not a decisive parameter on the performance of a UASB reactor.…”

Section: Introductionmentioning

confidence: 99%

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Innovative anaerobic bioreactor with fixed-structured bed (ABFSB) for simultaneous sulfate reduction and organic matter removal

Camiloti

Mockaitis

Rodrigues

et al. 2013

J. Chem. Technol. Biotechnol.

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BACKGROUND: The anaerobic treatment of wastewaters is usually applied to remove the organic matter, converting it into methane. The presence of sulfate in some wastewaters produces sulphide during anaerobic biological processing, which is known as an inhibitor of biological processes. In this study, a novel anaerobic bioreactor with a fixed structured bed (ABFSB) was subjected to simultaneous sulfate reduction and organic matter removal. RESULTS: Synthetic wastewater was used as organic substrate and the bioreactor performance was studied with different COD/[SO 42− ] ratios: 0.72, 1.7, 3.5 and 6.1. The highest COD and sulfate removal efficiencies were achieved at a COD/[SO 4 2− ] ratio of 1.7 (82 and 89%, respectively). Also, in this condition a greater overall kinetic apparent parameter (0.96 h −1 ) was observed. The kinetic parameters indicate that the sulfate reducing bacteria played an important role in the organic matter removal process over a range of COD/[SO 42− ] ratios from 6.1 to 1.7.CONCLUSIONS: Concerning the organic matter removal, the best synergy between sulfate reduction bacteria and metanogenic archaea communities was achieved in COD/[SO 4 2− ] ∼1.7. The ABSFB was suitable for the simultaneous organic matter and sulfate removal, especially when the COD/[SO 4 2− ] ratio was 1.7, but demonstrating a stable and efficient process in all conditions studied.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Innovative anaerobic bioreactor with fixed-structured bed (ABFSB) for simultaneous sulfate reduction and organic matter removal

Camiloti

Mockaitis

Rodrigues

et al. 2013

J. Chem. Technol. Biotechnol.

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“…The mechanism of chemical precipitation is that F -reacts with Ca 2+ to produce CaF 2 [7]: The main technologies of removing phosphate from wastewater consist of chemical precipitation [8], biological degradation [9], and adsorption [10]. The mechanism of chemical precipitation removing PO 4 3− involves PO 4 3− reacting with Ca 2+ to produce Ca 3 (Po 4 ) 2 [11]: 3Ca PO Ca (PO ) Similar as phosphate, the method to reduce the sulfate in wastewater includes chemical precipitation [12], biological treatment [13], and adsorption [14]. The mechanism of chemical precipitation is that 2− from wastewater in China and abroad, removing F -, PO 4 3− SO 4 2− from wastewater by coagulation-chemical precipitation method.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Removing F – , PO 4 3 − and SO 4 2 − from Wastewater in Aluminum Surface Treatment Solution

Pei¹,

Wei²,

Li³

2017

JRST

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This paper treats aluminum surface treatment solution wastewater and adopts coagulation-chemical precipitation method (combination of CaO, PAC and PAM) to remove F -, PO 4 3− and SO 4 2− . The study explores an approach that can remove F -, PO 4 3− and SO 4 2− in the wastewater simultaneously. Through optimization and improvement of reagent dosage and reaction conditions, the treated wastewater reaches the national discharge standards. The experimental results show that the optimal conditions for removal of F -, PO 4 3− and SO 4 2− are: 1150 mg of CaO, 110 mg of PAC, 85 mg of PAM at pH 9 and a reaction temperature of 323 K for a reaction time of 30 min. After treatment, the concentration of F -is 4.30 mg/L, which is lower than discharge standards of fluoride-containing industrial wastewater (10 mg/L). The concentration of PO 4 3− is 0.90 mg/L, lower than the second grade of discharge standard of phosphate-containing industrial wastewater (1.0 mg/L). The concentration of SO 4 2− is 125mg/L, lower than the maximum of allowable concentration of sulfate in drinking water standards (250 mg/L).

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“…Wei et al (2007) designed a two-stage jet-loop anaerobic fluidized bed (JLAFB) for treating high-sulfate wastewater, and 95% of sulfate and 85% of COD were removed in the first stage and the twostage JLAFB, respectively. Moreover, a two-stage UASB reactor was also demonstrated to be effective on the sulfate removal from acrylic fiber manufacturing wastewater (Li et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effective treatment of fermentation wastewater containing high concentration of sulfate by two-stage expanded granular sludge bed reactors

Dang

Qiu

et al. 2015

International Biodeterioration & Biodegradation

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Biological sulfate removal from acrylic fiber manufacturing wastewater using a two-stage UASB reactor

Cited by 30 publications

References 31 publications

Innovative anaerobic bioreactor with fixed-structured bed (ABFSB) for simultaneous sulfate reduction and organic matter removal

Innovative anaerobic bioreactor with fixed-structured bed (ABFSB) for simultaneous sulfate reduction and organic matter removal

Experimental Study of Removing F – , PO 4 3 − and SO 4 2 − from Wastewater in Aluminum Surface Treatment Solution

Effective treatment of fermentation wastewater containing high concentration of sulfate by two-stage expanded granular sludge bed reactors

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