Can rainwater harvesting improve flow augmentation in the Bagmati River?

Flow augmentation in the river can be achieved through rainwater harvesting. A descriptive solution model to river water pollution is proposed. The Bagmati River, running through Kathmandu valley, is heavily polluted because of increasing and unmanaged urbanization, solid waste disposal, and uncontrolled domestic and industrial sewage discharge.

How to prevent river water pollution?

Artificial aeration, floating islands, drainage nets etc are suggested to prevent the river pollution. Floating islands can help remove nitrogen and phosphorous significantly from the river water. Flow augmentation in the river can be achieved through rainwater harvesting. A descriptive solution model to river water pollution is proposed.

Can aquaculture strengthen the economy in Nepal?

Aquaculture, which has huge potential to strengthen the economy in Nepal, has high water demand, which could be addressed by reusing wastewater as a substantially high source of nutrients for algae and other organisms, which could also be a feed source for aquaculture (Paudel et al., 2019; Adhikari et al., 2020).

Can a descriptive solution model improve water quality in Bagmati River?

A Descriptive Solution Model to further enhance the water quality in Bagmati River is described that aims to restore the declining aquatic ecosystem and river environment. The proposed Descriptive Solution Model can be made applicable to any kind of river and/or river corridor.

Why is the Bagmati River so polluted?

The Bagmati River, running through Kathmandu valley, is heavily polluted because of increasing and unmanaged urbanization, solid waste disposal, and uncontrolled domestic and industrial sewage discharge. Centralized wastewater management has achieved little change and further deterioration is anticipated.

How can we improve the quality of the Bagmati River?

Installation of such islands along the Chicago and Brent rivers are examples of where this approach has drastically improved river quality (REI Co-op Journal, 2020; CITYLAB, 2019). This kind of technology may be suitable in the context of Bagmati River too.