Removal of nutrients and organic pollutants from domestic wastewater treatment by sponge-based moving bed biofilm reactor

Nhut, Huynh Tan; Hung, Nguyen Tri Quang; Sac, Tran Cong; Tri, Tran Quang; Hiep, Nguyen Trung; Ky, Nguyen Minh

doi:10.4491/eer.2019.285

Cited by 26 publications

(6 citation statements)

References 26 publications

(36 reference statements)

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“…However, it is advised that the filling ratio should not surpass 70% to ensure optimal mixing properties of the carriers 52 . Studies employing sponge-based carriers did not exceed filling ratios of 30% 54 , 66 . Moreover, the F/M ratios in the 10%, 20%, and 30% filling ratios were 1.4, 1, and 1.05 g COD/g MLVSS d, respectively.…”

Section: Resultsmentioning

confidence: 96%

Performance evaluation of a new sponge-based moving bed biofilm reactor for the removal of pharmaceutical pollutants from real wastewater

Chalipa,

Hosseinzadeh,

Nikoo

2024

Sci Rep

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Pharmaceutical pollutants, a group of emerging contaminants, have attracted outstanding attention in recent years, and their removal from aquatic environments has been addressed. In the current study, a new sponge-based moving bed biofilm reactor (MBBR) was developed to remove chemical oxygen demand (COD) and the pharmaceutical compound Ibuprofen (IBU). A 30-L pilot scale MBBR was constructed, which was continuously fed from the effluent of the first clarifier of the Southern Tehran wastewater treatment plant. The controlled operational parameters were pH in the natural range, Dissolved Oxygen of 1.5–2 mg/L, average suspended mixed liquor suspended solids (MLSS), and mixed liquor volatile suspended solids (MLVSS) of 1.68 ± 0.1 g/L and 1.48 ± 0.1 g/L, respectively. The effect of hydraulic retention time (HRT) (5 h, 10 h, 15 h), filling ratio (10%, 20%, 30%), and initial IBU concentration (2 mg/L, 5 mg/L, 10 mg/L) on removal efficiencies was assessed. The findings of this study revealed a COD removal efficiency ranging from 48.9 to 96.7%, with the best removal efficiency observed at an HRT of 10 h, a filling ratio of 20%, and an initial IBU concentration of 2 mg/L. Simultaneously, the IBU removal rate ranged from 25 to 92.7%, with the highest removal efficiency observed under the same HRT and filling ratio, albeit with an initial IBU concentration of 5 mg/L. An extension of HRT from 5 to 10 h significantly improved both COD and IBU removal. However, further extension from 10 to 15 h slightly enhanced the removal efficiency of COD and IBU, and even in some cases, removal efficiency decreased. Based on the obtained results, 20% of the filling ratio was chosen as the optimum state. Increasing the initial concentration of IBU from 2 to 5 mg/L generally improved COD and IBU removal, whereas an increase from 5 to 10 mg/L caused a decline in COD and IBU removal. This study also optimized the reactor’s efficiency for COD and IBU removal by using response surface methodology (RSM) with independent variables of HRT, filling ratio, and initial IBU concentration. In this regard, the quadratic model was found to be significant. Utilizing the central composite design (CCD), the optimal operating parameters at an HRT of 10 h, a filling ratio of 21%, and an initial IBU concentration of 3 mg/L were pinpointed, achieving the highest COD and IBU removal efficiencies. The present study demonstrated that sponge-based MBBR stands out as a promising technology for COD and IBU removal.

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Section: Resultsmentioning

confidence: 96%

Performance evaluation of a new sponge-based moving bed biofilm reactor for the removal of pharmaceutical pollutants from real wastewater

Chalipa,

Hosseinzadeh,

Nikoo

2024

Sci Rep

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“…The second factor included TSS, BOD, TKN and total P. The variables included in this cluster can be related to the supply of treated wastewater (Campo et al, 2020;Nhut et al, 2020), in which usually carbon compounds described by the parameter COD, BOD or TOC and nitrogen and phosphorus compounds are present (We et al, 2020). A particularly important variable in this cluster is BOD and total P. which indicate the inflow of carbon and phosphorus compounds (Kang et al, 2020).…”

Section: Research Results and Discussionmentioning

confidence: 99%

Studia Quaternaria

Ofman

2022

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The aim of the statistical analyses carried out was to identify similarities and to point out differences between the various tributaries of the Narew River, to identify the factors and processes responsible for the transformations occurring in the aquatic environment and finally, to identify the main sources of pollution in the river catchment. For the purposes of statistical analysis, the results of studies conducted as part of diagnostic monitoring by the General Inspectorate for Environmental Protection in 2017–2018 were used. The studies included 8 measurement points located directly on the Narew River and 17 points located on its selected left and right tributaries. Analysis of the collected results indicates that the chemical condition of the water in the Narew catchment is assessed as being poor. This observation may be due to the fact that the Narew catchment is mainly used for agricultural purposes and, in addition, there is a relatively large number of potential anthropogenic sources. As part of the analysis, two potential sources of pollution affecting water quality in the Narew catchment were identified, which include surface run-off and treated wastewater inflow.

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“…The sponge-based moving bed biofilm reactor has been used for nutrient and organic pollutant removal from domestic wastewater. The results showed that on day 80, the maximum COD, total nitrogen, and total phosphorus removal rates were 85.00%, 68.90%, and 40.30%, respectively (Nhut et al 2020). Phosphorus was removed by Libecki and Mikolajczyk (2021) using micro-electrolysis and sedimentation.…”

Section: Wastewater Treatmentmentioning

confidence: 99%

The new report of domestic wastewater treatment and bioelectricity generation using Dieffenbachia seguine constructed wetland coupling microbial fuel cell (CW-MFC)

2023

Archives of Environmental Protection

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The constructed wetland integrated with microbial fuel cell (CW-MFC) has gained attention in wastewater treatment and electricity generation owing to its electricity generation and xenobiotic removal efficiencies. This study aims to use the CW-MFC with different macrophytes for domestic wastewater treatment and simultaneously electricity generation without chemical addition. The various macrophytes such as Crinum asiaticum, Canna indica, Hanguana malayana, Philodendron erubescens, and Dieffenbachia seguine were used as a cathodic biocatalyst. The electrochemical properties such as half-cell potential and power density were determined. For wastewater treatment, the chemical oxygen demand (COD) and other chemical compositions were measured. The results of electrochemical properties showed that the maximal half-cell potential was achieved from the macrophyte D. seguine. While the maximal power output of 5.42±0.17 mW/m 2 (7.75±0.24 mW/m 3 ) was gained from the CW-MFC with D. seguine cathode. Moreover, this CW-MFC was able to remove COD, ammonia, nitrate, nitrite, and phosphate of 94.00±0.05%, 64.31±0.20%, 50.02±0.10%, 48.00±0.30%, and 42.05±0.10% respectively. This study gained new knowledge about using CW-MFC planted with the macrophyte D. seguine for domestic wastewater treatment and generation of electrical power as a by-product without xenobiotic discharge.

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Removal of nutrients and organic pollutants from domestic wastewater treatment by sponge-based moving bed biofilm reactor

Cited by 26 publications

References 26 publications

Performance evaluation of a new sponge-based moving bed biofilm reactor for the removal of pharmaceutical pollutants from real wastewater

Performance evaluation of a new sponge-based moving bed biofilm reactor for the removal of pharmaceutical pollutants from real wastewater

Studia Quaternaria

The new report of domestic wastewater treatment and bioelectricity generation using Dieffenbachia seguine constructed wetland coupling microbial fuel cell (CW-MFC)

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