Multiple aerobic and anaerobic baffled constructed wetlands for simultaneous nitrogen and organic compounds removal

Lehl, Harvinder Kaur; Ong, Soon‐An; Ho, Li-Ngee; Wong, Yee‐Shian; Saad, Farah Naemah Mohd; Oon, Yoong-Ling; Oon, Yoong-Sin; Yong, Chin-Yii; Thung, Wei-Eng

doi:10.1080/19443994.2016.1189698

Cited by 9 publications

(3 citation statements)

References 31 publications

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“…The final decision about which wetland performs better depends on the design conditions of constructed wetlands in the field. All previous findings regarding low and high concentrations for BR46, AB113 and the mixture of these two dyes indicate that having both aerobic and anaerobic conditions will improve the COD reduction (Vymazal et al 1998 ; Li et al 2012 ; Lehl et al 2016 ).…”

Section: Resultsmentioning

confidence: 90%

Treatment of artificial wastewater containing two azo textile dyes by vertical-flow constructed wetlands

Hussein

Scholz

2017

Environ Sci Pollut Res

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The release of untreated dye textile wastewater into receiving streams is unacceptable not only for aesthetic reasons and its negative impacts on aquatic life but also because numerous dyes are toxic and carcinogenic to humans. Strategies, as of now, used for treating textile wastewaters have technical and economical restrictions. The greater part of the physico-chemical methods, which are used to treat this kind of wastewater, are costly, produce large amounts of sludge and are wasteful concerning some soluble dyes. In contrast, biological treatments such as constructed wetlands are cheaper than the traditional methods, environmental friendly and do not produce large amounts of sludge. Synthetic wastewater containing Acid Blue 113 (AB113) and Basic Red 46 (BR46) has been added to laboratory-scale vertical-flow construction wetland systems, which have been planted with Phragmites australis (Cav.) Trin. ex Steud. (common reed). The concentrations 7 and 208 mg/l were applied for each dye at the hydraulic contact times of 48 and 96 h. Concerning the low concentrations of BR46 and AB113, the unplanted wetlands are associated with significant (ρ < 0.05) reduction performances, if compared with planted wetlands concerning the removal of dyes. For the high concentrations of AB113, BR46 and a mixture of both of them, wetlands with long contact times were significantly (ρ < 0.05) better than wetlands that had short contact times in terms of dye, colour and chemical oxygen demand reductions. Regarding nitrate nitrogen (NO3-N), the reduction percentage rates of AB113, BR46 and a mixture dye of both of them were between 85 and 100%. For low and high inflow dye concentrations, best removals were generally recorded for spring and summer, respectively.Electronic supplementary materialThe online version of this article (10.1007/s11356-017-0992-0) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 90%

Treatment of artificial wastewater containing two azo textile dyes by vertical-flow constructed wetlands

Hussein

Scholz

2017

Environ Sci Pollut Res

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“…The root zone was placed approximately 15 cm deep from the water table. Water table starts slightly above the gravel surface as stated in previous study [16].…”

Section: Reactor Setupmentioning

confidence: 94%

Decolourization and mineralization of Acid Red 27 metabolites by using multiple zoned aerobic and anaerobic constructed wetland reactor

Lehl¹,

Ong²,

Ho³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tAcid Red 27 (AR27) is widely used in paper processing, textiles, foods, cosmetics, beverages and medicines. Effluents containing AR27 are discharged daily into the environment which can adversely affect human and animals as AR27 is classified as an endocrine disruptor. This study describes the application of an aerobic and anaerobic baffled constructed wetland (ABCW) reactor in the removal of AR27 from a solution of synthetic wastewater with 50 mg/L AR27 concentration. The ABCW reactor planted with Phragmites australis was set with intermittent aeration and 1 d hydraulic retention time. This system's performance was evaluated in terms of COD, NH 4 + , colour and mineralization of intermediates with and without aeration at different concentrations. Based on the performance and analysis of GCMS, FTIR, HPLC a degradation pathway for AR27 was proposed. The system achieved COD removal of 88%, NH 4 + removal of 98%, complete decolourization and mineralization. FTIR analysis showed that provision of intermittent aeration contributed to the removal sulphonic groups and aromatic amines. The performance of the ABCW is attributed to the long pathway travelled by the wastewater which increased contact time of pollutants with microbes and rhizomes; and the synergistic effect of the combination of rhizomes, microbes and supplementary aeration.

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“…), narrow-leaved cattail (Typha angustifolia L.), broad-leaved cattail (Typha latifolia L.), yellow flag (Iris pseudacorus L.), sweet flag (Acorus calamus L.) and reed grass (Glyceria maxima). However, of all the afore-mentioned plants, the use of common reed seems most prevalent amongst researchers, because it can be found almost in all parts of the world [19][20][21] . Reed plant can be found across the globe except in Antarctica, but its main dispersal area is Europe, the Middle East and America [22] .…”

Section: Introductionmentioning

confidence: 99%

Performance of Common Reed (Phragmites australis) in a Constructed Wetland for Greywater Treatment in Akure, Nigeria

Alatise

Olanrewaju

et al. 2021

NJAS

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Shortage of freshwater is becoming a growing problem in both dry and semi-dry regions of the world, hence the need to make use of other source of water for agricultural production. The study was conducted to examine the performance of common reed in a constructed wetland for greywater treatment in Akure, Nigeria. Raw greywater was collected from Jadesola Hostel, Federal University of Technology, Akure, and pretreated through a combination of gravel of diameters < 32 mm, 24 mm and 16 mm with fine sand of diameter 0.2 mm arranged accordingly. The filtered water was thereafter released to a plastic constructed wetland (CW) which also consisted of same combination of layers of gravel and sand with common reed planted on it for complete treatment. The raw and treated greywater were analyzed for Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solid (TDS), and heavy metals. It was discovered that CW planted with common reed was effective in the treatment of greywater with reduction in BOD by 91.4%, COD by 91.5% and TDS by 38.7%. CW had appreciable removal effect on heavy metals with reduction in: manganese (Mn) from 0.100 ppm to 0.012 ppm, iron (Fe) from 0.014 ppm to 0.002 ppm, lead (Pb) from 0.05 ppm to 0.001 ppm and zinc (Zn) from 0.154 ppm to 0.148 ppm. Therefore, the use of common reed in constructed wetland for greywater treatment is recommended for farmers involved in irrigation with greywater, especially during dry seasons, and most importantly under the rising global water scarcity due to climate change.

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Multiple aerobic and anaerobic baffled constructed wetlands for simultaneous nitrogen and organic compounds removal

Cited by 9 publications

References 31 publications

Treatment of artificial wastewater containing two azo textile dyes by vertical-flow constructed wetlands

Treatment of artificial wastewater containing two azo textile dyes by vertical-flow constructed wetlands

Decolourization and mineralization of Acid Red 27 metabolites by using multiple zoned aerobic and anaerobic constructed wetland reactor

Performance of Common Reed (Phragmites australis) in a Constructed Wetland for Greywater Treatment in Akure, Nigeria

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