Fe-enhanced primary sedimentation and sludge acidogenesis for resources (P and PHA) recovery during wastewater treatment


Grant Data
Project Title
Fe-enhanced primary sedimentation and sludge acidogenesis for resources (P and PHA) recovery during wastewater treatment
Principal Investigator
Professor Li, Xiao-yan   (Project coordinator)
Co-Investigator(s)
Dr Lee Po-Heng, Henry   (Co-principal investigator)
Professor Zhang Xiangru   (Co-principal investigator)
Professor Zhang Tong   (Co-principal investigator)
Professor Li Xiang-dong   (Co-principal investigator)
Professor Leung Kenneth Mei Yee   (Co-principal investigator)
Dr Shih Kaimin   (Co-principal investigator)
Duration
36
Start Date
2015-06-01
Completion Date
2018-05-31
Amount
8893440
Conference Title
Presentation Title
Keywords
Wastewater treatment, Iron-enhanced sedimentation, Sludge acidogensis, Phosphorus recovery, PHA and bioplastics
Discipline
Environmental,Biochemical Engineering
Panel
Engineering
Sponsor
RGC Collaborative Research Fund (CRF)
HKU Project Code
C7044-14G
Grant Type
Collaborative Research Fund (CRF) - Group Research Project
Funding Year
2014/2015
Status
On-going
Objectives
1) To develop a novel chemical-biological process with ferric iron-enhanced sedimentation and acidogenic sludge hydrolysis to achieve the goals of high nutrient removal efficiencies, energy-saving, P recovery and organic utilization in municipal wastewater treatment; 2) To investigate and optimize the VFA production and P release processes and the microbial community characteristics involved in the hydrolysis and acidogenesis of the organic- and P-rich CEPT sludge under an anaerobic condition; 3) To utilize VFAs in the acidogenic sludge liquor for PHA production as a valuable bioplastic product and optimize the biosynthesis process to increase the PHA yield and improve the value-added result; 4) To carry out pilot-scale experiments on the CEPT and add-on sludge module to demonstrate the technological breakthrough, cost-effectiveness, and long-term benefits of the novel process for a more sustainable wastewater treatment and waste-to-resource operation.