Electrochemically-Cycled Oxidation ECO®for Landfill Leachate Treatment
Overview
By 2050, one billion metric tons of waste will be landfilled globally and over 30% will become toxic wastewater – landfill leachate. While ~50% of landfill leachate worldwide are co-treated into municipal sewage lines, this approach has posed great environmental challenges. ECO® can reduces leachate prior to sewage cotreatment through its novel two-step electrochemical treatment compaction process, presenting huge market opportunity in both existing and future landfill globally.
Commercialisation opportunities
technology licensing
Problem addressed
ECO® can reduces leachate prior to sewage cotreatment through its novel two-step electrochemical treatment compaction process. Not only can this lowers the downstream environmental and health risks, but also greatly reduce the overall wastewater treatment cost.
Innovation
- Strong toxicity and absorbance reduction via its novel two-step electrochemical process
- Recycles the oxidant (chlorine) for the next leachate batch, cutting time and energy consumption by 4-5 times
- No chemical dosing and Low maintenance
Key impact
- Reduces the leachate exposure as well as carbon footprint in the sewage cotreatment process
- Lowers environmental and health risks from discharged leachate from landfills
- Increases operative life of UV disinfection lamps
- Minimizes downstream wastewater treatment cost
Application
- ECO® can be installed in the sewage cotreatment process globally. Sewage co-treatment is adopted in half of the world that is adopting sewage cotreatment, such as in many parts of North America and Europe.
Patent
- US Patent Application No. 63/340409
- China Patent No. 202111452494.3
The Hong Kong University of Science and Technology (HKUST)
The Hong Kong University of Science and Technology (HKUST) (https://hkust.edu.hk/) is a world-class research intensive university that focuses on science, technology and business as well as humanities and social science. HKUST offers an international campus, and a holistic and interdisciplinary pedagogy to nurture well-rounded graduates with global vision, a strong entrepreneurial spirit and innovative thinking. Over 80% of our research work were rated “Internationally excellent” or “world leading” in the Research Assessment Exercise 2020 of Hong Kong’s University Grants Committee. We were ranked 3rd in Times Higher Education’s Young University Rankings 2022, and our graduates were ranked 23rd worldwide and among the best from universities from Asia in Global University Employability Survey 2021.
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