题目: Sewage Treatment - Energy Negative to Energy Positive
　　报告人: Prof. Wun Jern Ng
　　单位：新加坡南洋理工大学
　　时间: 2010年7月21日 (星期三) 下午2:00
　　地点: 环境技术楼423会议室

 
　　Prof. Wun Jern Ng简介：
　　• PhD Birmingham University 1980

• MSc (Water Resources Engrg) Birmingham University 1978

• BSc (Civil Engrg) University of London, Queen Mary Coll. 1977

Research interests:
　　NG WUN JERN's research interests are largely in the area of water and wastewater management. The focus of his efforts has been on investigations into water quality, treatment science, and development of treatment technologies. These investigations span the water quality spectrum - ranging from ultra-pure water to high strength and potentially inhibitory wastewaters.

His research output may be found in some 400 publications. These include journal papers, conference presentations, book chapters and monographs, reports, and patents. His latest book publication is titled "Industrial Wastewater Treatment" (Imperial College Press). He is currently working with colleagues on a book on engineered wetlands in tropical applications and one on water reclamation.

Current R&D interests revolve around effluent treatment and include dehalogenation under bioreductive conditions. Of particular interest are the chloro-compounds and dehalogenation under acidic conditions with biomass sculptured into granules.

The interest in bioreductive (instead of bio-oxidative) processes stems from concern over energy costs and carbon footprints of treatment processes. Anaerobic processes are therefore of interest when used to manage strong wastewaters from industrial and agro-industrial sources. Current R&D interest focuses on thermophilic anaerobic processes and gas productivities and quality. Conceptually there is a shift from viewing the anaerobic process as a wastewater pretreatment device to one which is intended to recover energy from the wastewater.

Extending this interest is the work on biosorption where sorption is used to concentrate carbonaceous material from low strength wastewaters prior to anaerobic degradation of the sorbent with gas recovery. This approach deviates from the conventional approach of using anaerobic processes such as the UASB or anaerobic filter to address low strength wastewaters. Laboratory studies typically use the cyclic process configuration although larger scale studies can be with the cyclic or continuous flow configuration.

In aerobic treatment, there is interest in the MBR applied with granulated biomass. The interest is on biofouling mitigation using this modified biomass morphology. There is also interest in using the MBR and the concept of "back seeding" to achieve better nutrients removal and degradation of resistant organics (eg textile dyes).

Current Projects:
•　　  Enhanced Biological and Physical Stabilization in Landfills

•　　  MBR Process Modeling And Optimization: Case Study of Ulu Pandan Water Reclamation Plant With Future Scale-Up Considerations

•　　  Silver-Doped Mesoporous Titanium Dioxide For Water Disinfection And Detoxification

•　　  WATER AND ENERGY IN THE URBAN WATER CYCLE - IMPROVING ENERGY EFFICIENCY IN MUNICIPAL WASTEWATER TREATMENT