Smart Sewage Foam Removal Robot


This robot can remove scum from the surface of sewage with tailor-made defoaming mechanism, artificial intelligence (AI) foam classification system and smart control system.

  • Smart Sewage Foam Removal Robot 0
  • Smart Sewage Foam Removal Robot 1
  • Smart Sewage Foam Removal Robot 2
Commercialisation opportunities
Technology licensing agreement
Problem addressed

Biofoam problems have been exisiting in the global wastewater treatment industry for decades.

  • The robot contains a defoaming mechanism, which divides the foam into small pieces through sharp defoaming pillars to reduce the resistance encountered by the robot while sailing, making it easier for the foam to sink into the bioreactor. Afterwards, the sprinkler system recycles the mixture to further disperse small pieces of foam through its high-pressure jets.
  • Equipped with an AI foam classification system, a foam density map will be constructed through video analysis. When the specified foam density level is detected, a defoaming route is automatically generated for the robot to operate, based on the foam density map.
  • Equipped with a smart control system with LiDAR (Light Detection and Ranging) and embedded GPS, providing collision avoidance and automatic navigation mechanisms, so that the robot can return to the designated parking space after each defoaming task is completed.
Key impact
  • Save water.
  • Improve the occupational safety and health of workers, and alleviate their workload.
  • Cost-effective defoaming performance.
  • 2022 Geneva International Exhibition of Inventions - Silver
Hong Kong Productivity Council (HKPC)

The Hong Kong Productivity Council (HKPC) is a multi-disciplinary organisation established by statute in 1967, to promote productivity excellence through integrated advanced technologies and innovative service offerings to support Hong Kong enterprises. HKPC is the champion and expert in facilitating Hong Kong's new industrialisation empowered by i4.0 and e4.0 - focusing on R&D, IoT, big data analytics, AI and Robotic technology development, digital manufacturing, etc., to help enterprises and industries upgrade their business performance, lower operating costs, increase productivity and enhance competitiveness. 

The Council is a trusted partner with comprehensive innovative solutions for Hong Kong industries and enterprises, enabling them to achieve resources and productivity utilisation, effectiveness and cost reduction, and enhanced competitiveness in both local and international marketplace. It offers SMEs and startups immediate and timely assistance in coping with the ever-changing business environment, accompanying them on their innovation and transformation journey.