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Shafdan

Shafdan

Soil-aquifer treatment to reclaim water for agricultural purposes

Shafdan

Shafdan

Soil-aquifer treatment to reclaim water for agricultural purposes

Shafdan

Shafdan

Soil-aquifer treatment to reclaim water for agricultural purposes

Shafdan

The Shafdan WWTP is located in the heavily populated Dan Region near Tel Aviv (Israel). The plant was constructed in 1969 and is operated by Mekorot.

It produces high quality water for unrestricted irrigation and thus enables agricultural activities under extreme water scarcity in the Negev.

The Shafdan WWTP produces 130 hm3/yr secondary effluent of which 125 hm3/yr are further treated by Soil Aquifer Treatment (SAT). The groundwater infiltration ponds have a capacity of 342000 m3/d.

The extensive irrigation system suffers from clogging due to manganese which is dissolved during the infiltration where the high biological activity in the upper part of the SAT (removal of mainly particulate organic matter, nitrogen and biodegradable carbon still present in the secondary effluents) results in oxygen deficiency in the soil, leading to anoxic conditions and consequent manganese dissolution.

The focus of DEMOWARE activities is on overcoming technical limitations by:

  • Optimised pre-treatment before soil infiltration using advanced oxidation processes (AOP).
  • Demonstrate the feasibility of short residence SAT to reclaim wastewater
  • Configuring alternative treatment to SAT based on Integrated Membrane System (IMS) consisting of UF and RO membranes.
  • Demonstrate the technical feasiblity of innovative technologies to prevent fouling in membrane systems