Wetlands for wastewater treatment

Ghimire, Umesh; Nandimandalam, Hariteja; Martinez‐Guerra, Edith; Gude, Veera Gnaneswar

doi:10.1002/wer.1232

Cited by 39 publications

(16 citation statements)

References 130 publications

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“…Nitrogen is one of the main pollutants responsible for eutrophication of surface waters that in turn reduces dissolved oxygen and endangers aquatic life. Nitrogen concentrations in surface water and groundwater bodies are difficult to regulate and control [5,6]. In wastewater, nitrogen can be present in different forms and can be transformed when wastewater is treated by different mechanisms.…”

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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“…Constructed wetland (CWs) is an ecological technology for wastewater treatment (Choudhury et al, 2019). According to the flow direction of wastewater, CWs can be mainly divided into surface flow, subsurface flow, and vertical flow CWs (Ghimire, Nandimandalam, Martinez‐Guerra, & Gude, 2019; Nivala et al, 2019; Phong Vo et al, 2019; Rabello, Teixeira, Gonçalves, & Salomão, 2019). The removal of EPs by CWs is mainly through the absorption and degradation (Li, Gao, et al, 2019; Li, Li, et al, 2019; Li, Zhang, Zeng, et al, 2019; Li, Liu, Zhang, Li, et al, 2019; Li, Zhang, Xia, Wang, et al, 2019; Li, Zhang, Hu, et al, 2019; Li, Sun, Zhang, Feng, et al, 2019; Li, Wang, et al, 2019; Li, Yuan, Gao, et al, 2019; Rabello et al, 2019).…”

Section: Engineered Wetlands and Natural Systemsmentioning

confidence: 99%

Emerging pollutants—Part II: Treatment

Liu

Zhang

Chang

2020

Water Environment Research

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Emerging pollutants (EPs) refer to a class of pollutants, which are emerging in the environment or recently attracted attention. EPs mainly include pharmaceutical and personal care products (PPCPs), endocrine-disrupting chemicals (EDCs), and antibiotic resistance genes (ARGs). EPs have potential threats to human health and ecological environment. In recent years, the continuous detections of EPs in surface and ground water have brought huge challenges to water treatment and also made the treatment of EPs become an international research hotspot. This paper summarizes some research results on EPs treatment published in 2019. This paper may be helpful to understand the current situations and development trends of EP treatment technologies.

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“…Constructed Wetlands have been effectively removing the pathogens (protozoa, helminths, viruses, bacteria, indicator organism, and antibiotic resistance genes) present in wastewater (Ghimire et al, 2019). Bioinoculation of selected bacteria strain (PFH1) played an active role in the removal of pathogens.…”

Section: Wetlands For Pathogens and Virus Removalmentioning

confidence: 99%

“…Therefore, new technological solutions have emerged to meet these regulations. Constructed Wetlands (CWs) have been investigated (Castillo‐Valenzuela, Martinez‐Guerra, & Gude, 2017; Ghimire, Nandimandalam, Martinez‐Guerra, & Gude, 2019; Jiang et al, 2016; Martinez‐Guerra, Castillo‐Valenzuela, & Gude, 2018; Martinez‐Guerra et al, 2015) as a cost‐effective solution to wastewater treatment.…”

Section: Introduction—wetlands For Environmental Protectionmentioning

confidence: 99%

Wetlands for environmental protection

Martinez‐Guerra

Ghimire

Nandimandalam

et al. 2020

Water Environment Research

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This article presents an update on the research and practical demonstration of wetland-based treatment technologies for protecting water resources and environment covering papers published in 2019. Wetland applications in wastewater treatment, stormwater management, and removal of nutrients, metals, and emerging pollutants including pathogens are highlighted. A summary of studies focusing on the effects of vegetation, wetland design and operation strategies, and process configurations and modeling, for efficient treatment of various municipal and industrial wastewaters, is included. In addition, hybrid and innovative processes with wetlands as a platform treatment technology are presented.

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Wetlands for wastewater treatment

Cited by 39 publications

References 130 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

Emerging pollutants—Part II: Treatment

Wetlands for environmental protection

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