Motor placed above water to prevent damage, connected to submerged propellers A metal net captures microplastics and medium-sized waste like bottles and packets Uses floats and weights to remain stable despite anti-torque forces Daily manual emptying of the bin ensures sustained operation Design minimizes ecological disturbance and supports aquatic life health 

Idea: Develop a low-cost, sustainable river waste collection device that uses motor-driven vortex mechanisms to direct floating waste into a collection bin. The system is intended to incentivize clean-up efforts, reduce aquatic pollution, and preserve biodiversity. SDG in Focus: Goal 14: Life Below Water Protect oceans, seas, and aquatic resources from pollution and degradation due to climate change and human activity. Constraints Considered: Requires a powerful motor to create a water vortex for garbage direction. Must maintain stability and upright position to prevent waste from spilling back into the river. Needs a durable, marine-grade net capable of holding large volumes of pollutants. Propeller design should prevent harm to aquatic organisms. Consideration for anti-torque effects, float positioning, and shaft mechanism. Must be cost-efficient and easy to maintain. Initial Solution & Issues: The first prototype used: A floating ring structure (Styrofoam) with water wheels for tidal power Proposed addition of a solar panel, later discarded A net inside to collect waste However, it failed due to: Plastic waste floating on top, not entering the net Waves created by the device diverted waste away from the bin Complex tidal power circuitry was impractical