As there are too many causes and action points for Bellandur Lake, higher focus should be on deterrence and preventing the lake from becoming more polluted else remedial measures will be in vain. Implement the Polluter pays principle. Those who pollute should bear the cost of remediating. "Polluter pays" is a fundamental principle in US environmental law and adopted by many countries around the world. Once deterrence is high, remedial measures will be more effective.
Floating Islands mimic nature’s process and provide wetland effect to water-bodies to clean the water. FIs provide habitat to organisms such as invertebrates, insects, fishes, birds, etc to restore the ecological cycle. www.floatingislands.in https://www.youtube.com/watch?v=FwCddyJvWfU http://clean-water.co.in/2019/05/23/floating-treatment-wetlands/