Performance evaluation of panelled anaerobic baffle-cum-filter reactor in treating municipal wastewater

Renuka, R.; Mohan, S.; Sowmiya, B.; Raj, S. Amal

doi:10.1016/j.ecoleng.2016.07.020

Cited by 22 publications

(12 citation statements)

References 46 publications

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“…As can be seen, the wastewater was clearly representative of municipal wastewaters. The studies performed by Sun et al ( 2016 ) and Renuka et al ( 2016 ) showed similar results. The results showed that ultrasound waves had the high ability on reducing hormones E1 and E2 (Tables 2 and 3 ).…”

Section: Resultssupporting

confidence: 62%

“…In fact, ultrasound waves lead to extensive destruction of organic materials, particularly macromolecules and massive organic materials by the formation of hydroxyl radical and cavitations phenomenon (Budiman and Wu 2016 ; Wu et al 2012 ). E1 and E2 hormones have strong oxidizing properties, so they are easily oxidized by hydroxyl free radicals produced by ultrasound (Renuka et al 2016 ). Also, these compounds are exposed to cavitation (Hotspot) made by ultrasound and they will remove because they have carbon ring of cyclohexane and cyclopentane types and desirable volatility properties (Jia et al 2015 ).…”

Section: Discussionmentioning

confidence: 99%

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Hormones removal from municipal wastewater using ultrasound

Roudbari

Rezakazemi

2018

AMB Expr

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Estrogens are one of the micro-pollutants in the wastewater which have detrimental effects on water living organisms. The aim of this study was to evaluate the efficiency of ultrasound to reduce the estrogen (E1) and 17 beta-estradiol (E2) from municipal wastewater. Hence, a cylindrical batch reactor was designed. The effects of powers, frequency, exposure time and pH on reduction efficiency were investigated. The residual concentration of E1 and E2 hormones was measured in reactor effluent by electrochemiluminescence (ECL) method. The results showed that ultrasound removed 85–96% of both E1 and E2 hormones after 45 min while other parameters changes in the range of their operations. Also, the frequency and power of ultrasound had a significant effect on reduction efficiency of hormones while the exposure had no significant effect. Furthermore, the interaction of power and frequency reduced their efficacy to 64.3% (Pvalue = 0.005). The result also indicated that the ultrasound waves have high ability to reduce Steroid hormones from municipal wastewater. The proposed method can be considered as one of the significant strategies for reduction or destruction of hormones from wastewater due to the non-generation of dangerous by-products and the low energy consumption.

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Section: Resultssupporting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Hormones removal from municipal wastewater using ultrasound

Roudbari

Rezakazemi

2018

AMB Expr

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“…The elimination of a component reduces material cost, whereas replacement with a new component increases the cost of the reactor when compared with a conventional UASB reactor. But in the long run, several advantages could be obtained in terms of reduced hydraulic retention time (HRT) (which in turn reduces pumping cost) and high biomass retention (which increases the efficiency) (Liu et al, 2013; Lo et al, 1994; Renuka et al, 2016). Variation of the labor and maintenance cost depend upon the complexity of modification.…”

Section: Introductionmentioning

confidence: 99%

A review on upflow anaerobic sludge blanket reactor: Factors affecting performance, modification of configuration and its derivatives

Swathi

2022

Water Environment Research

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The upflow anaerobic sludge blanket (UASB) reactor can be considered as one of the promising anaerobic wastewater treatment technologies suitable for the treatment of high-strength wastewater. In the recent period, researchers have focused on the treatment of low-strength wastewater using this technology. This review focuses on the key factors affecting the reactor performance such as hydraulic retention time (HRT), temperature, organic loading rate (OLR), pH and alkalinity, granulation, wastewater characteristics, mixing, and modification to conventional configuration. Start-up and granulation played a major role in the determination of reactor performance, and various theories have been proposed to understand the mechanism of granulation. Correlation between start-up time and OLR was found to be low, as other operating parameters might have been influencing the start-up time. Flowchart depicting the development of UASB reactor over time is included. In the present work, further development and derivatives of the UASB reactor such as static granular bed reactor (SGBR) and expanded granular sludge bed (EGSB) reactor are analyzed. The optimal conditions for UASB for treating various types of substrates was found to be HRT of 3-24 h, OLR of 1-15 kg COD/m 3 /d, and operational temperature in mesophilic range (30-40 C). Analysis of various modifications that pave the way for identification of future areas of research to improve reactor performance is also presented. Practitioner Points• Governing factors for better operating conditions are presented.• Attaining start-up with respect to various substrates is discussed.• Factors responsible for increase in efficiency, further developments and derivatives of UASB are depicted.

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“…In order to create cross-flow conditions inside the reactor to maintain high biomass concentration in this study, cross-flow packing was developed and utilized in each compartment of the ABR to form a hybrid anaerobic baffled reactor (HABR). The improvement of the structure led to the adherence of the microorganisms on the packing to form biofilms, and further increased the microbial richness and diversity [18,24].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Pilot-scale Hybrid Anaerobic Baffled Reactor (HABR) to Process Dyeing Wastewater Based on Grey Relational Analysis

Xiang

Xiong

2019

Applied Sciences

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A pilot-scale six-compartment hybrid anaerobic baffled reactor (HABR) with effective volume of 18 m3 was used to treat dyeing wastewater. The HABR system was able to treat the wastewater efficiently after FeSO4 pretreatment, as indicated by removal efficiencies of 33.7% for chemical oxygen demand (COD), 39.9% for suspended solid (SS), and 22.5% for sulfate (SO42−) during steadily operational period. Gas chromatography–mass spectrometry (GC-MS) showed that the concentrations of alkanes, amides, organic acids, ketones, phenols, and esters were much lower in the effluent than those in the influent; many high-molecular-weight compounds such as cyclanes, quinolines, and phenols were successfully transformed to low-molecular-weight ones. As illustrated from the results of generalized grey relational analysis (GGRA), COD removal efficiency was more closely associated with flow rate, organic loading rate (OLR), water temperature, and influent SS among the whole selected possible factors. Based on the overall treating effectiveness and the GGRA study, the optimized operation strategy of the dyeing wastewater treatment by HABR was obtained as the hydraulic retention time (HRT) of 12 h for steady-state operation with an up-flow velocity of 1.7 m/h as well as OLR of 1.5–2.0 kg COD/(m3·d).

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Performance evaluation of panelled anaerobic baffle-cum-filter reactor in treating municipal wastewater

Cited by 22 publications

References 46 publications

Hormones removal from municipal wastewater using ultrasound

Hormones removal from municipal wastewater using ultrasound

A review on upflow anaerobic sludge blanket reactor: Factors affecting performance, modification of configuration and its derivatives

Performance Evaluation of Pilot-scale Hybrid Anaerobic Baffled Reactor (HABR) to Process Dyeing Wastewater Based on Grey Relational Analysis

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