The water supply in many countries in Southeast Asia, such as Myanmar, Cambodia and Vietnam is being threatened by rapid rising population and climate change. The rising sea levels and the increase in extreme weather conditions (tidal waves) lead to an increased salinization of groundwater and surface water.

In addition, the groundwater in Vietnam shows high arsenic concentrations, a highly poisonous substance which is naturally washed out of sedimentary rocks.

The solutions provided by WAKAP project

– Development of an innovative, energy-efficient modular combined process of arsenic removal and desalination of brackish groundwater and seawater.
– The combination of two technologies, capacitive deionization (CDI) and reverse osmosis (RO) shall reduce the energy consumption for the desalination of seawater and improve significantly the water recovery.
– A subsurface in-situ remediation as pretreatment upfront of desalination by CDI shall remove arsenic and other problematic substance.

Modular concept for sustainable desalination using capacitive deionization, the case of Vietnam


09/2016 – 12/2019

Project area(s)

An Giang, Bà Rịa-Vũng Tàu, Trà Vinh

Coordination (GER)

Prof. Dr. Jan Hoinkis
Karlsruhe University of Applied Science (HsKA)
Institute of Applied Research (IAF)
Moltkestr. 30
76133 Karlsruhe
+49 721 925 1372

Coordination (VN)

Dr. Trần Lê Lựu
Vietnamese-German University (VGU)
3 Công Trường Quốc Tế
Q. 3, Hồ Chí Minh City

Project partner (GER)

  • Fraunhofer-Institut für System- und Innovationsforschung (ISI), Karlsruhe
  • Karl Spiegl GmbH & Co. KG, Nufringen
  • Winkelnkemper GmbH, Wadersloh
  • FERMANOX® Wasseraufbereitung

Project partner (VN)

  • TVietnamesisch-Deutsche Universität (VGU) (VGU)
  • SDVICO, Vũng Tàu