Clearbot: AI-Powered Robots Cleaning Up Our Waterways

A Hong Kong-based startup, Clearbot, is deploying autonomous, electric-powered vessels equipped with artificial intelligence to tackle the growing problem of marine debris in rivers, canals, and port areas. These robots are capable of collecting up to 200 kg of waste per operation and have already removed tons of trash from waterways, particularly in India.

The Problem of Waterway Pollution

Instead of waiting for plastic and other debris to reach the ocean, Clearbot focuses on intercepting pollution within inland waterways, especially in urban environments where waste accumulates rapidly due to illegal dumping and urban drainage systems. Lightweight waste like styrofoam, bottles, and plastic bags often collect in backwaters and along riverbanks.

How Clearbot Works: Autonomous Cleaning with AI

Clearbot’s vessels operate either autonomously or under remote supervision, adapting to local traffic conditions. The robots utilize cameras and computer vision models to identify floating debris whereas avoiding obstacles like buoys and structures. These AI models are trained using images captured in the field, continuously improving their recognition capabilities as more data is collected. Navigating waterways presents unique challenges – reflections, waves, and low visibility can interfere with sensors – so the system is likewise trained for obstacle avoidance during operation.

Operational Results and Impact

Clearbot reports significant waste removal figures from pilot projects. In Bharatpur, Rajasthan, India, a project in partnership with the local municipal authority resulted in the removal of 4,691 kg of waste. Approximately 3,000 kg of waste was collected in a project with the Jawaharlal Nehru Port Authority in the Mumbai region, focusing on cleaning a specific area and monitoring the types of waste removed. Beyond plastic, the technology can also remove invasive aquatic plants, clearing biomass from canals and rivers.

Data-Driven Insights for Effective Waste Management

A key feature of Clearbot’s service is the collection of data during the cleaning process. The robots record the location, quantity, and types of waste collected, providing valuable insights for city and port managers. This data is presented in reports and dashboards, allowing for the identification of critical pollution hotspots and tracking trends over time. This moves beyond one-off cleanup efforts to a more sustainable, data-driven approach.

Boat Design and Technology

Clearbot’s vessels range in length from approximately 10 to 16 feet and are designed for use in both river and coastal environments. They utilize low-power AI execution to maximize operating time on electric power, avoiding the pollution associated with combustion engines. The combination of robotics and tangible environmental impact has garnered attention beyond the environmental sector.

The Future of Waterway Cleanup

Clearbot is currently operating about a dozen boats across Hong Kong, Thailand, and India [1], and aims to increase its operational capacity tenfold, with over 25 boats deployed across India, Singapore, the Philippines, and Hong Kong [3]. By transforming cleaning into a measurable routine, Clearbot is addressing the challenge of maintaining clean waterways and preventing the recurrence of pollution. The company, founded in Hong Kong and with a team of 24 employees, is focused on developing and deploying its water-cleaning electric-powered boats, some of which can self-dock at solar charging stations [4].