Industrial wastewater treatment by Aerobic Inverse Fluidized Bed Biofilm Reactors (AIFBBRs): A review

Swain, Anup Kumar; Sahoo, Abanti; Jena, Hara Mohan; Patra, Hemalata

doi:10.1016/j.jwpe.2018.02.017

Cited by 55 publications

(7 citation statements)

References 90 publications

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“…All the determinations were done according to standard procedures and methods [19] whereas the biofilm thickness and dry density of biofilm were estimated from the net weight of the bioparticles [24][25][26]. uniform concentration of bio-particles throughout the reactor [27][28][29]. All the experimental runs were carried out with superficial air velocity (U g ) which are equal to or greater than the critical fluidization velocity in IFBBR by varying the ratios of (V b /V r ) with different U g .…”

Section: Measurement and Analysis For Degradation Experimentsmentioning

confidence: 99%

Investigation of flow dynamic characteristics of inverse fluidized bed biofilm reactor for degrading pharmaceutical based biomedical wastewater

Begum¹,

Sikkandar

Prakash³

et al. 2020

Environmental Engineering Research

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The paper investigates the flow dynamic behaviour of inverse fluidized bed biofilm reactor (IFBBR) for the treatment of pharmaceutical based biomedical wastewater. The residence time distribution (RTD) study has been employed as a tool to investigate the flow dynamic behaviour of wastewater within the reactor. The biofilm reactor is operated using Pseudomonas fluorescens for various ratios of settled bed volume to reactor working volume (V b /V r) with different superficial air velocities and examined their impact on flow dynamics. The outcomes of this study demonstrate the presence of dead volume and short circuiting in the reactor were reduced for the optimized (V b /V r) ratio of 0.20 and optimum superficial air velocity (U g) m of 0.220 m/s. The potential of IFBBR was experimentally validated by analysing the chemical oxygen demand (COD) removal efficiency, total dissolved solids (TDS) and total suspended solids (TSS) emanating from the wastewater. Findings of this study reveals that maximum COD reduction of about 92% was achieved when the reactor was operated with (V b /V r) m of 0.20 with superficial air velocity, U gm of 0.220 m/s showing the optimal operating parameters for IFBBR which has good mixing and less back mixing condition inside the reactor.

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Section: Measurement and Analysis For Degradation Experimentsmentioning

confidence: 99%

Investigation of flow dynamic characteristics of inverse fluidized bed biofilm reactor for degrading pharmaceutical based biomedical wastewater

Begum¹,

Sikkandar

Prakash³

et al. 2020

Environmental Engineering Research

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“…The discharge of untreated industrial effluents is considered as one of the main sources of water pollution which impact negatively on the environment and human health (Swain et al 2018). Hence, purification of such effluents is necessary, but this may be complicated due to the presence of complex chemical profiles (Yang et al 2018).…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Performance intensification of constructed wetland technology: a sustainable solution for treatment of high-strength industrial wastewater

Nurmahomed

Ragen

Sheridan

2022

Water Science and Technology

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The objectives of this study were to: (1) assess the intensification of chemical oxygen demand (COD) and phosphate (PO4-P) removal; and (2) generate a set of rate constants of COD degradation (kCOD) and phosphate (kPO4-P) removal for the treatment of industrial wastewater (WW) using intensified adsorption beds. Two horizontal subsurface flow constructed wetlands (HSSFCWs) filled with coal ash and alum sludge and two conventional HSSFCWs packed with gravels were operated with different loadings of COD and PO4-P at a hydraulic retention time (HRT) of 24 hrs at water depth of 0.40 m. The bed performance was analysed for COD and PO4-P removal efficiency. The intensified HSSFCWs outperformed the control beds by a mean COD and PO4-P removal efficiency of 43 and 49%, respectively. The progression of COD and PO4-P removal along the system was fitted into the first order plug flow model (K-C model). In this study the kCOD values ranged from 0.36 to 0.65 m/d with a mean of 0.46 ± 0.08 m/d (n = 30). The kPO4-P values ranged from 0.74 to 1.76 m/d and averaged to 1.23 ± 0.37 m/d (n = 30), irrespective of the condition applied. Hence, these data can be used for future projects using HSSFCWs to treat industrial wastewater.

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“…Additionally, the agricultural sector is the productive sector that consumes the most water in the world, using more than 70% of global water resources, mainly through farmland irrigation [4]. During the last decades, freshwater demand and shortages have both increased, with this situation being aggravated by the lack of or improper treatment of industrial wastewaters, creating risks such as food production reduction, industrial expansion obstruction, and difficulties related to both environmental and human health [5]. Water contamination and scarcity are phenomena that have increased all over the world and are two of the biggest challenges that humankind faces today.…”

Section: Introductionmentioning

confidence: 99%

Treatment of WASTEWATER from the Tannery Industry in a Constructed Wetland Planted with Phragmites australis

et al. 2020

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Constructed wetlands (CWs) can remove a high amount of pollutants from wastewater, and therefore play an important role in water purification. In this study, a pilot system to improve the traditional treatment of industrial wastewater from the tannery industry was tested. The main objective of this research was to remove nitrogen, phosphorus, boron, and chromium from a tannery’s industrial wastewater using a horizontal subsurface flow constructed wetland (HSSFCW) formed from three cells, planted with Phragmites australis and operated in batch mode as an ecofriendly system. P. australis was selected due to its ability to adapt to climatic conditions, its wetland and management characteristics, and its high capacity for pollutant absorption. The concentrations of total Kjeldahl nitrogen (TKN), total phosphorus (TP), boron (B), and chromium (Cr) were analyzed in both wastewater and purified water, and the removal efficiencies were calculated. In addition, both the absorption capacity of P. australis in the aerial and root parts and the adsorption capacity of substrates (gravel and washed sand) were analyzed. Results showed that the concentrations of TP and Cr decreased in the wastewater at both hydraulic retention times (HRTs) tested (3 and 7 days), with 3 days being the most effective, showing removal efficiency values of 78% and 48% for TP and Cr, respectively. However, concentrations of TKN and B were not statistically reduced at either HRTs. Regarding the absorption capacity of P. australis, the highest absorption efficiencies for TKN and TP were reported at 7 days in the aerial part of the plants. In contrast, B was retained in roots at HRT of 3 days. Finally, Cr was more significantly absorbed at 3 days by P. australis. Moreover, the substrates also played important roles in the adsorption of nitrogen and boron. Therefore, CWs planted with P. australis could be used as an ecofriendly technique to the reduce pollution load of the wastewater from tannery industry, especially for P and Cr, although in order to increase the removal efficiency of B and N, the combination with other plant species and different retention times should be tested.

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Industrial wastewater treatment by Aerobic Inverse Fluidized Bed Biofilm Reactors (AIFBBRs): A review

Cited by 55 publications

References 90 publications

Investigation of flow dynamic characteristics of inverse fluidized bed biofilm reactor for degrading pharmaceutical based biomedical wastewater

Investigation of flow dynamic characteristics of inverse fluidized bed biofilm reactor for degrading pharmaceutical based biomedical wastewater

Performance intensification of constructed wetland technology: a sustainable solution for treatment of high-strength industrial wastewater

Treatment of WASTEWATER from the Tannery Industry in a Constructed Wetland Planted with Phragmites australis

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