Anaerobic treatment of sulfate-rich wastewater in an anaerobic sequential batch reactor (AnSBR) using butanol as the carbon source

Sarti, Arnaldo; Zaiat, Marcelo

doi:10.1016/j.jenvman.2011.01.009

Cited by 71 publications

(23 citation statements)

References 22 publications

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“…With the in-depth research on SRB and the development of anaerobic reactors, researchers and engineers are increasingly interested in using some modern new high-efficiency anaerobic reactors to treat high-sulfate wastewater. [21][22][23][24][25][26][27][28][29][30][31] Modern anaerobic treatment systems depend to a certain extent on the formation of a stable and balanced micro-ecosystem.…”

Section: Biochemical Processmentioning

confidence: 99%

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Lu¹,

Jeong²,

Yan³

et al. 2020

J Korean Soc Environ Eng

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Objectives : Wastewater produced by fatty acid production contains high concentration of organic substances and high concentration of salts (mainly sodium sulfate), causing great pollution to water resources and environment. The pollution prevention and control of this type of wastewater are very necessary. The key to treating this type of wastewater is to remove salts and COD to achieve harmless treatment. This is a problem in wastewater management that has plagued the industry for a long time. This paper proposed a technique suitable for fatty acid high salinity organic wastewater.Methods : First, the industrial treatment technology of organic wastewater with high salinity was introduced and analyzed. Combined with the principle of industrial wastewater treatment, the process route for the treatment of fatty acid high salinity organic wastewater was analyzed and selected. In addition, the key technology and process for anaerobic desalination and COD removal were analyzed and selected.Results and Discussion : According to the unique nature of this type of wastewater mainly containing sulphate salts and the feasibility of industrial production, a special technology combination was proposed to treat this wastewater at this stage. Since this wastewater has a B/C ratio of 0.4 to 0.45, it is easier to use biological treatment method. Thus, the conventional treatment method is pretreatment + biological treatment. Biological enhancement and reactor process optimization can be studied for better efficiency.Conclusions : Considering the high COD and sulphate concentration characteristics of fatty acid high-salinity organic wastewater, high-efficiency anaerobic biochemical treatment is mainly considered. Combined with modern high-efficiency anaerobic suspended sludge granule technology, it was concluded that pretreatment + high efficiency IC anaerobic + secondary biological treatment can achieve industrialized treatment of such wastewater in a targeted, low-cost and reliable way. In the later stage, bio-enhancement of the anaerobic process as well as structural and process optimization of the reactor can be carried out to obtain better technical and economic results in production practice.

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Section: Biochemical Processmentioning

confidence: 99%

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Lu¹,

Jeong²,

Yan³

et al. 2020

J Korean Soc Environ Eng

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“…The microbial community present in the inoculum needs to be assessed and optimized. Changes in the experimental conditions, such as to the influent sulfate concentration or COD/SO 4 2ratio, may lead to a better understanding of batch reactor operation for the treatment of sulfate-rich wastewater from industrial processes (Sarti et al, 2010;Sarti and Zaiat, 2011).…”

Section: Effect Of Metal Additionmentioning

confidence: 99%

Acid Mine Drainage Treatment and Metal Removal Based on a Biological Sulfate-Reducing Process

Neto

Aguiar

Rodriguez

et al. 2018

Braz. J. Chem. Eng.

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The key purpose of this research was to explore the capacity of an anaerobic stirred batch reactor (ASBR) to deal with acid mine drainage (AMD) based on the activity of sulfate reducing bacteria (SRB). The tests showed that SRB produced hydrogen sulfide that precipitated the metals Fe 2+ , Zn 2+ , and Cu 2+ . Ethanol was used as both the only source of carbon and electron donor. Throughout the experiment, the ratio of chemical oxygen demand (COD) to sulfate was constant at 1.0. The reactor was operated for 218 days using synthetic AMD at pH 4.0 containing 1000 and 1500 mg·L -1 of sulfate,100 mg·L -1 of Fe 2+ , 20 mg·L -1 Zn 2+ , and 5 mg·L -1 Cu 2+ . The metal removal rates were greater than 99 %with effluent pH of 6.5 to 7.4. The sulfide concentration reached 56.6 mg·L -1 and sulfate removal was 43 to 65 %.

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“…It has been shown that the competition of SRB was more pronounced at low COD/SO 4 2− ratio in the wastewater (Singh et al 2014). The consumption of organic substrates in sulphate-laden wastewater is strongly dependent on the COD/SO 4 2− ratio (Sarti and Zaiat 2011). The COD/SO 4 2− ratio of 0.67 was reported to be theoretically optimum ratio for the significant removal of COD by SRB (Rinzema and Lettinga 1988).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic digestion of sulphate-rich post-tanning wastewater at different COD/sulphate and F/M ratios

et al. 2018

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Anaerobic digestion of post-tanning wastewater was performed in batch anaerobic digester to evaluate the effect of COD/sulphate ratio [0.62, 0.69, and 1.20 (w/w) %] and F/M ratio [0.2, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, and 1.5 (w/w) %)] on the removal efficiency of COD. The F/M ratio of 0.3 was found to be the optimum ratio for the removal of COD by 53, 57, and 65%, respectively at COD/sulphate ratio of 0.62, 0.69, and 1.20. The maximum sulphate removal was observed at F/M ratio of 0.2 and the removal efficiency was 48, 50, and 58% at COD/sulphate ratio of 0.62, 0.69, and 1.20, respectively. The removal efficiency of COD and sulphate was increased with increase in COD/sulphate ratio from 0.62 to 1.20 and decreased with increase in F/M ratio from 0.2 to 1.5 in anaerobic digestion of post-tanning wastewater. The maximum concentration of sulphide formation was 784 mg/L at COD/sulphate ratio of 0.62 in anaerobic digestion process and the process was inhibited at this sulphide concentration. The microbial activity in the sludge was evaluated through live and dead cell assay using fluorescent microscopy. The maximum amount of dead microbes was observed in the anaerobic digester, which was operated at COD/sulphate ratio of 0.62 than other studied ratio.

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Anaerobic treatment of sulfate-rich wastewater in an anaerobic sequential batch reactor (AnSBR) using butanol as the carbon source

Cited by 71 publications

References 22 publications

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Acid Mine Drainage Treatment and Metal Removal Based on a Biological Sulfate-Reducing Process

Anaerobic digestion of sulphate-rich post-tanning wastewater at different COD/sulphate and F/M ratios

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