THE SMALL EARTH NEPAL

Together We Stand for Sustainable Lifestyles

An innovative Floating Treatment Wetland System (FTWS) using the microcosm study to remediate polluted waterbody: A case study of Nagdaha lake

Urban ponds are prone to eutrophication problems that act as a source of water for irrigation, household chores like washing, bathing, recreational activities, and aquatic ecosystems. The floating Treatment Wetland System (FTWS) is an innovative and cost-effective phytoremediation technique to improve the water quality of freshwater resources. This project aims to remediate the polluted water of Nagdaha through the use of rafts and hanging a root network. The hanging root network provides an opportunity for biofilm growth. The root and biofilm combinely absorbs nutrients from the water and helps to remediate the polluted water bodies. It is an eco-friendly, cost-effective means to improve water quality by employing the purification processes associated with natural wetlands. The microcosm setup has been constructed on the premises of the Kathmandu Valley Water Supply Management Board (KVWSMB).

Funding source: Asia Pacific Network for Global Change Research (APN)

Duration: 2 Years (1 October 2021 – 30 November 2023)

Project leader: Professor Sadhana Prdhanang

Collaborators: SEN is leading the project in collaboration with  University of Dhaka (DU), Bangladesh,  Central University of Rajasthan (CURAJ), India, University of Yamanashi (UY), Japan, Kathmandu Valley Water Supply Management Board (KVWSMB), Nepal,  Tribhuvan University (TU), Nepal, and University of Rhode Island (URI), USA

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