Performance of the hybrid growth sequencing batch reactor (HG-SBR) for biodegradation of phenol under various toxicity conditions

Yusoff, Nik Athirah; Ong, Soon‐An; Ho, Li-Ngee; Wong, Yee‐Shian; Saad, Farah Naemah Mohd; Khalik, WanFadhilah; Lee, Sin-Li

doi:10.1016/j.jes.2018.03.001

Cited by 17 publications

(9 citation statements)

References 31 publications

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“…These also correspond with pre- Higher phenols degradation 93.3% was recorded for 539 mg/L initial COD, while, 87.9% and 64.6% of COD removal 540 was recorded for 1935 mg/L and 2300 mg/L initial COD respectively. [49] vious studies [51,52]. The numerous peaks in the influent are due to various major and minor compounds present, as mentioned in Table 10.…”

Section: Intermediates Formed During Sbr Treatment Post Optimizationmentioning

confidence: 98%

Performance evaluation of column-SBR in paper and pulp wastewater treatment: optimization and bio-kinetics

Khan¹,

Khan²,

Islam³

et al. 2019

DWT

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Pulp and paper industry generates effluent containing harmful compounds like chlorophenols which are difficult to biodegrade. It requires an appropriate treatment in order to meet the stringent discharge standards. In this work, a bench scale column type sequential batch reactor (SBR) was employed for treating pulp and paper wastewater. The performance of SBR, seeded with acclimatized sludge was optimized and analysed for maximizing COD and AOX removal. The process parameters viz; pH, initial COD, cycle time and MLSS were optimized and their effects on response variables: COD removal efficiency, AOX removal efficiency and SVI were investigated. The optimum conditions were determined to be: initial COD 1200 mg/l, pH 7.5, MLSS 2100 mg/L and cycle time 15 h, for 73.2% COD removal, 57.6% AOX removal and 122.8 mL/g SVI. The complex compounds were broken down into numerous intermediate compounds thus enhancing COD and AOX removal with low SVI. The bio-kinetics of the optimized system was also analyzed in order to understand the bacterial nature towards substrate utilization. Two kinetic models namely Grau second-order model and Stover-Kincannon model were found to be fitwell with high correlation coefficients (R 2 = 0.99) for COD as well as AOX.

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Section: Intermediates Formed During Sbr Treatment Post Optimizationmentioning

confidence: 98%

Performance evaluation of column-SBR in paper and pulp wastewater treatment: optimization and bio-kinetics

Khan¹,

Khan²,

Islam³

et al. 2019

DWT

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“…Inhibitory effects were identified at concentrations above 400 mg L −1 in upgraded SBR, but at phenol concentrations below 400 mg L −1 , the microorganism has the ability for adaptation and was capable to develop an enzyme which turns the toxicant into substrate. Yusoff et al, (2019) reported that the COD removal efficiency was 82%-85% throughout 4 days while the removal efficiency of phenol ranged between 83%-85% at 200 mg L −1 of phenol. Rahmani et al,(2019) showed that the highest efficiency of phenol removal (100 mg L −1 initial concentration) was obtained using the UV/TiO2 process (94%) and the total organic carbon removal efficiency was observed to be 74%; however, this technology used is expensive and requires some technical proficiency, contrarily to the technology used in this study, which is the simplest and the most flexible environmental technology.…”

Section: Effect Of Phenol Concentrationmentioning

confidence: 99%

Upgrading sequencing batch reactor using attached biofilm

Abdelaziz¹,

Fouad

Mossad

2021

Water Environment Research

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A conventional sequencing batch reactor (SBR) was upgraded using fixed biofilm carriers with a specific surface area around 18 m 2 m −3 . The upgraded SBR was investigated to remove phenol from high strength wastewater operated under various operational conditions. The operational conditions used were variable volume exchange ratio (VER) up to 75%, hydraulic retention time (HRT) from (10.7-21.3 hr), aeration time (from 2 to 8 hr), and initial phenol concentration up to 600 mg L −1 . It was found that the upgraded SBR increased the removal efficiencies of biological oxygen demand (BOD 5 ), chemical oxygen demand (COD), and total suspended solids (TSS) by about 10% using high strength wastewater without phenol compared to SBR. Furthermore, the removal rate of phenol for the upgraded SBR was higher than conventional SBR by about 18% at 600 mg L − of initial phenol concentration under the same operational conditions. Compared to the conventional SBR, the upgraded version reduced the aeration step by 25% and achieved higher removal efficiency of phenol. Moreover, it reduced the excess sludge by about 23% and enhanced its properties by lowering the sludge volume index (SVI) by about 33%. © 2021 Water Environment Federation • Practitioner points• Upgrading conventional SBR by adding biofilm carriers is necessary for wastewater treatment with high strength wastewater. • The upgraded SBR has a higher resistance toward phenol compound due to the presence of the attached biofilm. • The upgraded SBR enhances sludge settling properties, decreases the amount of excess sludge, and also reduces the start-up period. • The number of cycles per day by upgraded SBR was more than the conventional SBR by 15%. • The upgraded SBR is an effective system and has good operational stability.

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“…The formula for the synthetic wastewater used in SBRs is as follows: 94. 39 [18,27]. The high salt wastewater is obtained by diluting 20 g/L NaCl with tap water.…”

Section: Water Sample Configurationmentioning

confidence: 99%

“…The decrease in SS (suspended solids) content in the system during continuous reaction may also due to this. Theoretically, N and P and COD will be converted into nutrients during the operation of the SBR system [39], promoting the growth of microorganisms and the production of organic matter in the activated sludge, and increasing SS [40,41]. However, in the actual reaction, due to the high salt and surfactant stress, some microbial cells ruptured, the SS in the system decreased, and the COD in the effluent increased.…”

Section: Removal Performance Analysismentioning

confidence: 99%

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

Huiru

Yang

2020

IJERPH

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Sodium dodecylbenzene sulfonate (SDBS) and sodium dodecyl sulfate (SDS), as two anionic surfactants, have diffused into environments such as surface water and ground water due to extensive and improper use. The effects on the removal performance and microbial community of sequencing batch reactors (SBRs) need to be investigated in the treatment of saline wastewater containing 20 g/L NaCl. The presence of SDS and SDBS could decrease the removal efficiencies of ammonia nitrogen and total phosphorus, and the effect of SDS was more significant. The effect of surfactants on the removal mainly occurred during the aeration phase. Adding SDS and SDBS can reduce the content of extracellular polymeric substances (EPS). In addition, SDS and SDBS also can reduce the inhibition of high salinity on sludge activity. A total of 16 s of rRNA sequencing analysis showed that the addition of surfactants reduced the diversity of microbial communities; besides, the relative abundance value of the dominant population Proteobacteria increased from 91.66% to 97.12% and 93.48% when SDS and SDBS were added into the system, respectively.

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Performance of the hybrid growth sequencing batch reactor (HG-SBR) for biodegradation of phenol under various toxicity conditions

Cited by 17 publications

References 31 publications

Performance evaluation of column-SBR in paper and pulp wastewater treatment: optimization and bio-kinetics

Performance evaluation of column-SBR in paper and pulp wastewater treatment: optimization and bio-kinetics

Upgrading sequencing batch reactor using attached biofilm

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

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