Effects of pH adjustment by parawood ash and effluent recycle ratio on the performance of anaerobic baffled reactors treating high sulfate wastewater

Saritpongteeraka, Kanyarat; Chaiprapat, Sumate

doi:10.1016/j.biortech.2008.05.012

Cited by 86 publications

(31 citation statements)

References 20 publications

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“…Na pH mogu da utiču: huminske supstance koje menjaju karbonantnu ravnotežu, biološka aktivnost flore i faune, kao i soli koje hidrolizuju. Zbog uticaja pH na hemijska i biološka svojstva vode, određivanje pH je veoma značajno [22,23]. pH vrednost je određi-vana lakmus papirom, indikatorskim papirima i pHmetrom.…”

Section: Slika 4 -Satelitski Snimak Pogona Filtracije Rudnika Bakra Munclassified

pH value and concentrations of total dry residue and suspended matter in the wastewater of the Majdanpek Copper mine

Serbula¹,

Ristić²,

Manasijević³

et al. 2014

Zas Mat

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Section: Slika 4 -Satelitski Snimak Pogona Filtracije Rudnika Bakra Munclassified

pH value and concentrations of total dry residue and suspended matter in the wastewater of the Majdanpek Copper mine

Serbula¹,

Ristić²,

Manasijević³

et al. 2014

Zas Mat

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“…Operation at longer HRT and lower effluent recycle ratios could generate the biogas with higher methane content and yield. Effluent recycle also provided an additional alkalinity for a pH control purpose and toxicity dilution (Saritpongteeraka et al, 2008).…”

Section: Effluent Recyclementioning

confidence: 99%

The developments of anaerobic baffled reactor for wastewater treatment: A review

Liu¹,

Tian²,

Chen³

2010

Afr. J. Biotechnol.

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With the increasing deterioration of world water resources, configuring a technical and economic viable wastewater treatment and recycle technology to satisfying the increasing complexity of wastewater and stringent environmental regulation has been a great challenge over the past decades. Developing reliable technologies for wastewater treatment is of urgent importance. In recent years, anaerobic baffled reactor (ABR) treating wastewaters effectively, have received considerable attention in the literature. This paper reviews the development and application, performance and characteristics, modeling of the ABR for wastewater treatment and the combination of ABR with other processes during the last decade. This paper provides a critical review on the ABR for treatment of refractory wastewaters. It was indicated that ABR had become a promising alternative for wastewaters treatment with great further development potential.

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“…A COD removal efficiency of 92.3 ± 6.3% and a COD effluent concentration of 311 ± 218 mg/L were observed during phase 2 under an OLR of 1.4 ± 0.3 kg-COD/ (m 3 ·day). On the other hand, in the previous study, only 75.2 − 75.7% of COD is removed under an OLR of 1.16 kg-COD/ (m 3 ·day) [9]. The high removal efficiency in our study is related to the higher number of compartments, facilitating the contact between the anaerobic microbial consortium, overcoming the low pH of the influent, and utilizing more COD pollutants without adjusting the pH using NaOH or parawood ash as used in the previous study [9].…”

Section: Reactor Performancementioning

confidence: 99%

“…On the other hand, in the previous study, only 75.2 − 75.7% of COD is removed under an OLR of 1.16 kg-COD/ (m 3 ·day) [9]. The high removal efficiency in our study is related to the higher number of compartments, facilitating the contact between the anaerobic microbial consortium, overcoming the low pH of the influent, and utilizing more COD pollutants without adjusting the pH using NaOH or parawood ash as used in the previous study [9]. Recently, UASB and ABR are the frequently used anaerobic process for the treatment of wastewater from natural rubber processing.…”

Section: Reactor Performancementioning

confidence: 99%

“…Moreover, the compartmentalization may promote phase separation (hydrolysis, acidogenesis and methanogenesis) longitudinally down the reactor. Laboratory-scale [7,9] and pilot-scale [10,11] studies on the use of ABR for the treatment of natural rubber processing wastewater have been reported. However, different profiles of the wastewater discharged from natural rubber processing are observed because of the chemicals used during the coagulation of rubber latex, for example, sulfuric acid [9,12] or organic acids [6,7] in Thailand or Vietnam, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Anaerobic Baffled Reactor in Treatment of Natural Rubber Processing Wastewater: Reactor Performance and Analysis of Microbial Community

Tran

Watari

Hirakata

et al. 2017

J. of Wat. & Envir. Tech.

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Wastewater discharged from the coagulation process of natural rubber contains high concentrations of organic compounds, mainly formic or acetic acid, and residual rubber particles. These compounds pose serious issues during the high-rate anaerobic digestion without pH adjustment and solid removal in advance. In this study, an anaerobic baffled reactor (ABR, working volume of 68 L, ten compartments) was investigated for the treatment of such wastewater with a HRT of 3.5 ± 0.9 days. The performance of the ABR was evaluated with the stepwise increase in COD influent during a period 224 days. The microbial community in the sludge from each compartment of the ABR on the 143rd day was analyzed. Under an OLR of 1.4 ± 0.3 kg-COD/(m 3 ·day), the highest COD and total suspended solid removal efficiency of 92.3 ± 6.3% and 90.0 ± 5.6%, respectively, were observed. Sequencing of 16S rRNA genes using MiSeq revealed the difference acetogen communities in each compartment. Most of the methanogens, particularly acetate-utilizing methanogens, were predominantly distributed in the 3rd, 4th, and 5th compartments, where volatile fatty acid concentration considerably decreased and the highest biogas production was observed. These results indicated that the ABR is a potential alternative for the treatment of this wastewater.

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Effects of pH adjustment by parawood ash and effluent recycle ratio on the performance of anaerobic baffled reactors treating high sulfate wastewater

Cited by 86 publications

References 20 publications

pH value and concentrations of total dry residue and suspended matter in the wastewater of the Majdanpek Copper mine

pH value and concentrations of total dry residue and suspended matter in the wastewater of the Majdanpek Copper mine

The developments of anaerobic baffled reactor for wastewater treatment: A review

Anaerobic Baffled Reactor in Treatment of Natural Rubber Processing Wastewater: Reactor Performance and Analysis of Microbial Community

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