Constructed wetland microcosms as sustainable technology for domestic wastewater treatment: an overview

Kumar, Saroj; Dutta, Venkatesh

doi:10.1007/s11356-019-04816-9

Cited by 74 publications

(24 citation statements)

References 87 publications

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“…However, through nitrification, nitrogen is not removed from the wastewater; it only changes chemically. In the second step, in denitrification that develops in an anoxic/anaerobic environment, nitrate is transformed into a removable gaseous product [7,8]. According to Metcalf and Eddy [9] and Bojorges et al [10], in domestic wastewater, nitrogen is present as organic nitrogen (Norg), ammonium (N-NH 4 ), and nitrate (NO 3 +).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Removal from Domestic Wastewater and the Development of Tropical Ornamental Plants in Partially Saturated Mesocosm-Scale Constructed Wetlands

Nakase

Zurita

Nani

et al. 2019

IJERPH

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Vertical partially saturated (VPS) constructed wetlands (CWs) are a novel wastewater treatment system for which little information is known about its design parameters and performance under tropical climates. The objective of this study is to evaluate the nitrogen removal process from domestic wastewater and the production of tropical ornamental plants (Canna hybrids and Zantedeschia aethiopica) in VPS CWs at a mesocosms scale. Nine VPS CWs, with a free-flow zone of 16 cm and a saturated zone of 16 cm, were used as experimental units. Three units were planted with Canna hybrids., and three, with Zantedeschia aethiopica (one plant per unit); the remaining three units were established as controls without vegetation. They were fed with domestic wastewater intermittently and evaluated for the elimination of COD, N-NH 4 , N-NO 3 , Norg, NT, and PT. The results showed an increase in the removal for some pollutants in the vegetated systems, i.e., N-NH 4 (35%), Norg (16%), TN (25%), and TP (47%) in comparison to the unvegetated systems. While N-NO 3 removal showed better removal in 10% of the systems without vegetation, no significant differences were found (p > 0.05) for COD removal. The aerobic and anaerobic conditions in the VPS CWs favor the elimination of pollutants in the systems, and also the development of the tropical species evaluated in this study; good development was exhibited by a high growth rate and biomass production.

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Section: Introductionmentioning

confidence: 99%

Nitrogen Removal from Domestic Wastewater and the Development of Tropical Ornamental Plants in Partially Saturated Mesocosm-Scale Constructed Wetlands

Nakase

Zurita

Nani

et al. 2019

IJERPH

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“…Selection of support media is important, as this will support the active biofilm and may act as an adsorbent for some pollutants. Kumar and Dutta (2019) describe the key components and controlling factors critical to achieving optimum performance in constructed wetlands.…”

Section: Constructed Wetlandsmentioning

confidence: 99%

Innovative Wastewater Treatment Technologies — The INNOQUA Project

2021

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“…In addition, plants can improve the porosity of matrix, increase oxygen transfer, promote the growth of matrix microorganisms, and provide attachment sites for microorganisms [12,13]. Moreover, the pollutants in micro-polluted lake water were degraded by complex microbial community in wastewater through its assimilation and proliferation, which improved the overall treatment performance of the VSFCW [14]. However, in the low-temperature season, some aquatic plants have difficulty in adapting to low temperature, and microbial activity is reduced, leading to a reduced removal efficiency of VSFCW [15,16].…”

Section: Introductionmentioning

confidence: 99%

Purification of Micro-Polluted Lake Water by Biofortification of Vertical Subsurface Flow Constructed Wetlands in Low-Temperature Season

Gao

Zhang

et al. 2022

Water

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In this study, a novel lab-scale biofortification-combination system (BCS) of Oenanthe javanica and Bacillus series was developed to improve the treatment ability of vertical subsurface flow constructed wetlands (VSFCW) at low temperatures (0–10 °C). The results showed that BCS-VSFCW overcame the adverse effects of low temperature and achieved the deep removal of nutrients. In addition, the removal rates of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN), and total phosphorus (TP) by BCS-VSFCW were 38.65%, 28.20%, 18.82%, and 14.57% higher than those of blank control, respectively. During the experiment, Oenanthe javanica and low temperature tolerant Bacillus complemented each other in terms of microbial activity and plant uptake. Therefore, VSFCW combined with Oenanthe javanica and low temperature tolerant Bacillus has a promising future in low temperature (<10 °C) areas of northern China.

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Constructed wetland microcosms as sustainable technology for domestic wastewater treatment: an overview

Cited by 74 publications

References 87 publications

Nitrogen Removal from Domestic Wastewater and the Development of Tropical Ornamental Plants in Partially Saturated Mesocosm-Scale Constructed Wetlands

Nitrogen Removal from Domestic Wastewater and the Development of Tropical Ornamental Plants in Partially Saturated Mesocosm-Scale Constructed Wetlands

Innovative Wastewater Treatment Technologies — The INNOQUA Project

Purification of Micro-Polluted Lake Water by Biofortification of Vertical Subsurface Flow Constructed Wetlands in Low-Temperature Season

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