Hadas Mamane, Ph.D.
Hadas Mamane, Ph.D.
Professor, Department of Mechanical Engineering
Tel Aviv University
Speech Title: 
A hybrid of advanced oxidation and short aquifer treatment for water reuse
Abstract: 
The Shafdan reclamation project facility (Tel Aviv, Israel) practices soil aquifer treatment (SAT) of secondary effluent with hydraulic retention times (HRT) of 180-360 days for unrestricted agricultural irrigation. During SAT, manganese dissolves in the infiltrated effluent due to negative redox potential. An additional emerging problem is the presence of trace organic compounds (TrOCs) in wastewater that should be removed prior to effluent reuse. An innovative hybrid process based on flocculation, filtration, advanced oxidation and short SAT (sSAT) with ~22 days HRT is proposed for treatment of the Shafdan secondary effluents to overcome limitations of the existing system and to reduce physical footprint of SAT. The goal of this study was to determine the potential of the proposed technology for removal of TrOCs, prevention of manganese dissolution and increasing infiltration capacity. Biofiltration after coagulation– flocculation and hydrogen peroxide addition was operated. This step reduced oxidant demand during ozonation and consumption of dissolved oxygen (DO) during SAT by removing ammonia, nitrite and most of the particulate matter, and reduced dissolved organic carbon (DOC). The ozonation decreased UVA by 60%, increased organic matter biodegradability and efficiently removed TrOCs while oxygenating the effluent (26–30 mg/L DO) prior to sSAT. Results from short SAT operated with the proposed pretreatment showed minimal manganese dissolution, DOC and UVA reduction, DO increase and further TrOC removal.
Bio: 

Dr Hadas Mamane is currently a faculty member and a senior lecturer at the Engineering School, Tel-Aviv University (TAU), Israel. Dr. Mamane is the Head of Water-Tech Laboratory. Dr. Mamane returned to Israel in 2005 after receiving her Ph.D. from Duke University and conducted her post doctoral studies at TAU through a Porter fellowship. On Oct 2007 she was appointed to a tenure track position, on Sep 2010 she was appointed a senior lecturer and on June 2013 she received tenure. Dr. Mamane’s research is on technologies for water treatment. She has expertise in ultraviolet (UV) disinfection, various advanced oxidation technologies (AOP), and water and wastewater quality analysis.

Research Interests: 
Technologies for water treatment, UV and solar disinfection, Treatment of contaminants with advanced oxidation processes (AOP), Characterization of particles, Pretreatment technologies for biofouling control, Nano-particles in water

October 22-23, 2014