Flue Gas Desulphurisation Wastewater Treatment Solution


This technology discovers the critical component for the total nitorgen of coal-fired power station wastewater. This novel and highly cost-effective chemical and biological process was developed to treat effleunt in a low-carbon manner, while complying with the discharge requirements of local government.

  • Flue Gas Desulphurisation Wastewater Treatment Solution 0
  • Flue Gas Desulphurisation Wastewater Treatment Solution 1
  • Flue Gas Desulphurisation Wastewater Treatment Solution 2
Technical name of innovation
A Total Nitrogen Treatment Process for Desulfurisation Wastewater in Coal-fired Power Plants
Commercialisation opportunities
Problem addressed

Conventional wastewater treatment method cannot remove total nitrogen in coal-fired power plant wastewater effectively, making it difficult to comply with the discharge requirements of local government.

  • Discover that the main ingredient of total nitrogen in wastewater comes from Nitrogen-Sulphur (NS) compound, which is difficult to treat with conventional treament method.
  • This novel solution can convert the NS compound into nitrate, thereby removing all nitrogen in the wastewater through advanced biochemical technology.
  • Simple and feasible biochemcial treatment process.
Key impact
  • It is highly cost-effective and can significantly reduce investment and operating costs.
  • Low energy consumption and low carbon emission during treatment process.
  • The total nitrogen contents in pollutant were reduced after treatment, resulting in wastewater that met the stipulated discharge standard.
  • 2019 Geneva International Exhibition of Inventions - Gold Medal


  • Patent No. HK1251784
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.