Avner Adin -Water Treatment Technology



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Israel Water Association 		Prof. Avner Adin
Department of Soil and Water Sciences
The Faculty of Agricultural, Food and Environmental Quality Sciences
The Hebrew University of Jerusalem
Rehovot, 76100, Israel
Tel: 972-8-9489405
Fax:972-8-9475181
email: adin@vms.huji.ac.il

Research in Water Treatment and Pollution Control Technology

Two main areas relating to water quality, a major concern in Israel and world wide, are investigated: potable water treatment and advanced wastewater treatment for water reuse. The common denominator of both topics is the emphasis which is put on particle research in relation to solid/liquid separation processes, such as coagulation, flocculation, filtration, sedimentation and flotation.

Solid particles in water, such as clay, metal oxides, algea and other organic, cause turbidity and are associated with bacteria and virus even in invisible concentrations. Their enhanced removal from water assures that the treatment system is also impermeable to parasites. Solids separation and removal from water and wastewater effluents protects irrigation systems, desalination membranes and groundwater enrichment facilities from clogging.

Research topics include particle characterization in water and wastewater, raw and treated; study of particle transport, attachment and detachment mechanisms; mathemtical modeling; development of high-rate, granular filtration as well as slow granular filtration processes; application of metallic and polymeric coagulants for process improvement; development of local filtering materials; filter bed optimization; pre-tretment of saline water for desalination by reverse osmosis; clogging mechanisms in drip irrigation systems and their prevention; sludge minimization and reuse in water treatment plant; removal of virus and parasites in water treatment processes; and more.

Some of the research work is inter or multi-disciplinary, such as investigations that relate to filtration of microorganisms, or the development of water quality control in effluent reservoirs via satellites.

Short term investigations are being held in conjunction with industry. Industries that have difficulties in complying with stringent effluent standards or with high manufacturing standards, are looking here for solutions to their problems. Among them are electronics, textile, metal finishing, pharmaceutics and various food factories.

As can be seen from the above description, in-depth scientific learning and engineering applications serve together to protect our vulnerable aquatic environment.



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