The ECOWAMA Project proposes a new eco-efficient closed cycle management model for the treatment of effluents of the metal and plastic surface processing industry (STM). Such STM waste water is extensively contaminated with oils and greases, organic loading, a salt fraction and especially with heavy metals (e.g. nickel, copper, zinc and others). Hence STM enterprises have high interest on efficient, cost-effective and sustainable treatment of their effluents. ECOWAMA’s approach combines wastewater treatment with recovery of ultrapure water, highly valuable metals and energy.