Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum

Duarte, Iolanda Cristina Silveira; Oliveira, L.; Okada, Dagoberto Yukio; Prado, Pierre Ferreira do; Varesche, Maria Bernadete Amâncio

doi:10.1590/s1516-8913201500271

Cited by 4 publications

(2 citation statements)

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“…In a study by Duarte et al degradation of LAS in anaerobic SBR (ASBR) was evaluated. Degradation of the surfactant at the end of the operation was 87% and removal of chemical oxygen demand was 86% (37). One study encompassed a total of 50 municipal wastewater sites and included 15 activated sludge systems, 12 trickling filters, six oxidation ditches, eight lagoons, and nine rotating biological contactors (RBC).…”

Section: Discussionmentioning

confidence: 99%

The Performance of Advanced Sequencing Batch Reactor in Wastewater Treatment Plant to Remove Organic Materials and Linear Alkyl Benzene Sulfonates

Eslami

Hematabadi

Ghelmani

et al. 2015

Jundishapur J Health Sci

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Background: Linear alkyl benzene sulfonates (LAS) are the most important ionic detergents that produce negative ions in the environment. These compounds enter surface waters through domestic and industrial wastewaters and cause environmental hazards. Objectives: The present study was aimed at assessing the performance of advanced sequencing batch reactor (SBR) in wastewater treatment plant of Yazd, Iran, to remove organic materials and detergents. Materials and Methods:The present research was a descriptive longitudinal study conducted on 96 input and output samples of SBR system over eight months from October 2012 to June 2013. The studied parameters were biochemical oxygen demand 5 (BOD 5 ), chemical oxygen demand (COD), and detergents (LAS), which were assessed through standard methods. Finally, the study data were analyzed through analysis of variance (ANOVA) using software package for statistical analysis (SPSS). Results: The mean inputs of BOD 5 , COD, and LAS to the SBR system were 292.40 ± 45.28, 597.15 ± 97.30, and 3.29 ± 0.92 mg/L, and the mean outputs were 20.59 ± 3.54, 59.34 ± 9.47, and 0.606 ± 0.09 mg/L, respectively. The removal efficiency of BOD 5 , COD and LAS were respectively 92.95%, 90.06% and 81.6%. The results of ANOVA indicated that there was a significant relationship between the mean inputs and outputs of BOD 5 , COD, and the detergents (P ≤ 0.001). Conclusions:With the proper operation of wastewater the treatment plant and increasing the retention time, the removal efficiency of the detergents increased. In addition, according to the environmental standards for BOD 5 , COD and the detergents, the results of the present study indicated that the outputs of these parameters from the SBR system were appropriate for agricultural irrigation.

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Section: Discussionmentioning

confidence: 99%

The Performance of Advanced Sequencing Batch Reactor in Wastewater Treatment Plant to Remove Organic Materials and Linear Alkyl Benzene Sulfonates

Eslami

Hematabadi

Ghelmani

et al. 2015

Jundishapur J Health Sci

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“…Ozdemir et al (2011) reported an efficiency of 99.63% for the removal of dodecylbenzenesulfonate (SDBS) from aqueous solutions using adsorption by polyaniline polymers. Zsilak et al (2014) evaluated the use of photocatalysis combined with ozonization for LAS degradation and found removal efficiencies of 85% after 45 h. In addition to such physical and physical-chemical treatment techniques, other work by Duarte et al (2015) evaluated LAS degradation in an anaerobic reactor. The reactor was fed with a synthetic substrate containing nitrate, and LAS was added at a concentration of 22 mg L À1 .…”

Section: Effect Of Tie Line Length On Las Partitioningmentioning

confidence: 99%