Water scarcity is one of the main problems of the world population. Today, about 700 million people in 43 countries suffer from water poverty – and this figure is expected to rise to about 1.8 billion by 2025. Until a few years ago, many countries in Southeast Asia such as Myanmar, Cambodia and Vietnam were considered to have no significant water problems. However, the water supply of these countries is threatened by rapidly increasing population numbers and climate change.


Wakap 1 (Thai Son)
Wakap 1 (Thai Son)
Wakap 2 (Jan Hoinkis)
Wakap 2 (Jan Hoinkis)

In September 2016, the German Federal Ministry of Education and Research (BMBF) launched the joint project “Modular Concept for Sustainable Water Desalination Using Capacitive Deionisation Using Vietnam (WaKap) as an Example”, which is coordinated by the Karlsruhe University of Applied Sciences – Technology and Industry. The central project coordinator is Prof. Dr. Jan Hoinkis.

The aim is the development of an innovative modular system for the desalination of groundwater, seawater and brackish water as well as the construction of a pilot plant. The combination of Capacitive Deionisation (CDI) and Reverse Osmosis will significantly reduce energy consumption and increase the yield of drinking water compared to existing desalination processes. For groundwater containing arsenic, an in-situ treatment is planned beforehand in order to remove as far as possible the problematic substances for the CDI treatment.

Contact Person: Jan Hoinkis


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Hochschule Karlsruhe – Technik und Wirtschaft | Karlsruhe University of Applied Sciences                 Universität Sungkyunkwan                 Karlsruher Institut für Technologie                 Land and Housing Institute (LH-I)                 Hochschule für Technik Stuttgart