Simulation of Various Baffle Types in a Constructed Wetland Sedimentation Tank using CFD

Noh, Taegyun; Jeon, Jechan; Kim, Lee-Hyung

doi:10.17663/jwr.2016.18.3.324

Cited by 2 publications

(1 citation statement)

References 5 publications

(4 reference statements)

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“…Substrate, such as gravel, plays the role of filtration, as the voids and media structure has remarkable impact on suspended solids and trapping suspended solid during the flow path. Low flow rate and longer hydraulic detention time could improve settling retention of suspended solid (Wu et al ., 2015; Noh et al ., 2016).…”

Section: Resultsmentioning

confidence: 99%

Efficiency of a pilot hybrid wastewater treatment system comprising activated sludge and constructed wetlands planted with Canna lily and Cyperus papyrus

Hidayah

Cahyonugroho

Pachwarya

et al. 2020

Water & Environment J

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Combination of constructed wetland with activated sludge (AS) is one of the application of sustainable development for dealing with environmental pollution. The objective of this study was to compare the performance of three system of domestic wastewater treatment, namely AS, combination AS with constructed wetland containing Canna lily (AS‐CWC), combination AS with constructed wetland containing Cyperus papyrus (AS‐CWP) for treating domestic wastewater. Mini pilot scale of treatment system was built under continuous flow. Samples were taken at outlet in each unit for measuring water quality parameters, such as BOD, TSS, PO43−, NH4+‐N and NO3−‐N. The results indicated that AS‐CWC performed a higher removal of BOD, PO43− and TSS than AS‐CWP and AS. AS‐CWC and AS‐CWP showed a statistically insignificant difference removal of NH4+‐N and NO3‐‐N, though the former performed a higher removal than the later. This study revealed that TOC increased in the highest percentage in AS and the lowest increasing in AS‐CWP. Constructed wetlands should be integrated with primary treatment to enhancing effluent quality and reduce organic matter, a precursors of carcinogenic compound.

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Section: Resultsmentioning

confidence: 99%

Efficiency of a pilot hybrid wastewater treatment system comprising activated sludge and constructed wetlands planted with Canna lily and Cyperus papyrus

Hidayah

Cahyonugroho

Pachwarya

et al. 2020

Water & Environment J

View full text Add to dashboard Cite

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Influence of Electrodes Configuration on Hydraulic Characteristics of Constructed Wetland–Microbial Fuel Cell Systems Using Graphite Rods and Plates as Electrodes

Wang

Zhang

et al. 2023

Sustainability

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Constructed wetland–microbial fuel cell coupling systems (CW–MFCs) have received significant academic interest in the last decade mainly due to the promotion of MFCs in relation to pollutants’ degradation in CWs. Firstly, we investigated the effect of hydraulic retention time (HRT) and electrode configuration on the flow field characteristics of CW–MFCs using graphite rods and plates as electrodes, as well as the optimization of electrode configuration using computational fluid dynamics (CFD) numerical simulation. The results showed that: (1) the apparent HRT was the most influential and decisive factor, with a contribution of over 90% for the average HRT of CW–MFCs; (2) anode spacing was the most influential factor for the hydraulic performance of CW–MFCs, with contributions of over 50% for water flow divergence and hydraulic efficiency (λ) and over 45% for effective volume ratio (e); (3) anode size was significant for e and λ, with a contribution of over 20%; (4) cathode position and cathode size had no statistically significant effect on the hydraulic performance of CW–MFCs. It was mainly through the blocking of water flows, flows around, compressing water flow channels and boundary layer separation that the MFC electrodes influenced the hydraulic characteristics of the flow field in CW–MFCs. Optimizing the flow field by optimizing the electrode configuration helped to facilitate electricity generation and pollutants’ removal in CW–MFCs. This study offers a scientific reference for improving the hydraulic performance of CW–MFCs, and it also provides a new research perspective for improving the wastewater treatment and electricity production performance of CW–MFCs.

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Simulation of Various Baffle Types in a Constructed Wetland Sedimentation Tank using CFD

Cited by 2 publications

References 5 publications

Efficiency of a pilot hybrid wastewater treatment system comprising activated sludge and constructed wetlands planted with Canna lily and Cyperus papyrus

Efficiency of a pilot hybrid wastewater treatment system comprising activated sludge and constructed wetlands planted with Canna lily and Cyperus papyrus

Influence of Electrodes Configuration on Hydraulic Characteristics of Constructed Wetland–Microbial Fuel Cell Systems Using Graphite Rods and Plates as Electrodes

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