A Review on Constructed Wetlands Components and Heavy Metal Removal from Wastewater

Qasaimeh, Ahmad; Alsharie, Hesham; Masoud, Talal

doi:10.4236/jep.2015.67064

Cited by 34 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CWs are a type of nature-based treatment systems (NBTS) that mimic natural ecosystem principles for water treatment. The efficiency of these systems depends mainly on the complex interaction between soil, water, vegetation and the atmosphere, which leads to achieving several treatment goals through mechanical, chemical and biological processes [78,79]. CWs can achieve an appropriate treatment efficiency with relatively low cost of earthwork, piping and construction [80].…”

Section: Implementing Scenarios For Constructed Wetland Wef Nexus Solutions For the Cr-wspmentioning

confidence: 99%

Application of the Water–Energy–Food Nexus Approach to the Climate-Resilient Water Safety Plan of Leh Town, India

Páez-Curtidor¹,

Gondhalekar²,

Drewes³

2021

Sustainability

View full text Add to dashboard Cite

Climate-resilient water safety plans (CR-WSPs) have been developed as a risk-based approach to ensure a safe drinking-water supply while addressing the increasing stress on water resources resulting from climate change. Current examples of the application of CR-WSPs show a strong sectoral approach that fails to explore the potential synergies between other climate-sensitive sectors related to water, such as food and energy. This can increase the vulnerability or decrease the overall resilience of urban systems when planning climate change adaptation measures. In this work, the Water–Energy–Food (WEF) Nexus approach was applied in the formulation of a CR-WSP in Leh Town, India, a city with rapid development and population growth located in the Himalayas—one of the most sensitive ecosystems to climate change. The WEF Nexus approach was applied in the system description using a critical infrastructure approach and in the formulation of scenarios for risk management which exploited intersectoral synergies through water reclamation with resource recovery using constructed wetlands. The improvements in WEF security and risk reduction were demonstrated through indicators and risk mapping with geographical information systems (GISs). The methods for integrating the WEF Nexus approach in CR-WSPs provided through this work can serve as a base for a trans-sectoral, resilient approach within risk-based approaches for water security.

show abstract

Section: Implementing Scenarios For Constructed Wetland Wef Nexus Solutions For the Cr-wspmentioning

confidence: 99%

Application of the Water–Energy–Food Nexus Approach to the Climate-Resilient Water Safety Plan of Leh Town, India

Páez-Curtidor¹,

Gondhalekar²,

Drewes³

2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…The creation of constructed wetlands (CWs) for wastewater treatment was thought to be a possible candidate and alternative to conventional systems [12,13]. CWs utilize wetland plants, soils, and associated microbial assemblages to remove pollutants [14][15][16]. They have been used in many parts of the world for wastewater treatment [5,17,18], but there have been few reports on their application in water polishing.…”

Section: Introductionmentioning

confidence: 99%

Applicability of Constructed Wetlands for Water Quality Improvement in a Tea Estate Catchment: The Pussellawa Case Study

Weerakoon

Jinadasa

Herath

et al. 2018

Water

View full text Add to dashboard Cite

Abstract:Water in agricultural catchments is prone to pollution from agricultural runoff containing nutrients and pesticides, and contamination from the human population working and residing therein. This study examined the quality of water in a drainage stream which runs through a congested network of 'line houses' (low-income housing, typically found arranged in straight 'lines' on estates) in the tea estate catchment area of Pussellawa in central Sri Lanka. The study evaluated the applicability of vertical subsurface flow (VSSF) and horizontal subsurface flow (HSSF) constructed wetlands for water polishing, as the residents use the stream water for various domestic purposes with no treatment other than possibly boiling. Water flow in the stream can vary significantly over time, and so investigations were conducted at various flow conditions to identify the hydraulic loading rate (HLR) bandwidth for wetland polishing applications. Two wetland models of 8 m × 1 m × 0.6 m (length × width × depth) were constructed and arranged as VSSF and HSSF units. Stream water was diverted to these units at HLRs of 3.3, 4, 5, 10, 20, and 40 cm/day. Results showed that both VSSF and HSSF wetland units were capable of substantially reducing five-day biochemical oxygen demand (BOD 5 ), total suspended solids (TSS), fecal coliform (FC), total coliform (TC), ammonia nitrogen (NH 4 + -N), and nitrate nitrogen (NO 3 − -N) up to 20 cm/day HLR, with removal efficiencies of more than 64%, 60%, 90%, 93%, 70%, and 59% for BOD 5 , TSS, FC, TC, NH 4 + -N, and NO 3 − -N, respectively, in the VSSF wetland unit; and more than 66%, 62%, 91%, 90%, 53%, and 77% for BOD 5 , TSS, FC, TC, NH 4 + -N, and NO 3 − -N, respectively, in the HSSF wetland unit.

show abstract

“…In order to reduce heavy metal concentration, researchers ((Nelson, 2002;Qasaimeh et al, 2015;Yao et al, 2012) had stated that adsorption by wetland soil is an effective and efficient way. Adsorption is a natural process where heavy metals are adsorbed by clay and organic matter through electrostatic attraction (Qasaimeh et al, 2015). It had been widely used and utilized as a treatment for heavy metal because it does not only creates green and recreational space but also economic friendly (Nelson, 2002).…”

Section: Introductionmentioning

confidence: 99%

Sorption of Copper Metal Solution by Wetland Soil

Liew

Wong

Fai

et al. 2018

IJET

View full text Add to dashboard Cite

This study is to determine the equilibrium time and removal efficiency of copper by wetland soil. The wetland is located near the car park at College of Engineering, UNITEN. Wetland soil were collected randomly at a depth of 20 cm to 50 cm. Soil samples are then oven dried at 105 oC for 48 hours. After that it is let to cool down for 15 minutes before crushed and sieved through a 2.36 mm size sieve pan. Based on the Batch equilibrium method, the wetland soil is soaked in copper metal solution for different study time of 1, 2, 3, 5, 24, 168 and 336 hours. Each studied time are prepared in three samples, with initial copper metal solution concentration 1 mg/l. Parallel method is used in order to prevent disruption on the soil to solution ratio. Results obtained show that the concentration of copper metal solution decreases gradually and reached a constant during the period of 24 hours to 168 hours. Desorption phenomenon also occurred during that period of time. The removal percentage shows an increase up to 50 %. It clearly shows that adsorption of copper metal solution by wetland soil is effective.

show abstract

A Review on Constructed Wetlands Components and Heavy Metal Removal from Wastewater

Cited by 34 publications

References 14 publications

Application of the Water–Energy–Food Nexus Approach to the Climate-Resilient Water Safety Plan of Leh Town, India

Application of the Water–Energy–Food Nexus Approach to the Climate-Resilient Water Safety Plan of Leh Town, India

Applicability of Constructed Wetlands for Water Quality Improvement in a Tea Estate Catchment: The Pussellawa Case Study

Sorption of Copper Metal Solution by Wetland Soil

Contact Info

Product

Resources

About