ABSTRACT
As a result of technical progress made in recent years, decentralised wastewater and storm water solutions can be improved in terms of environmental impacts, as well as economic efficiency.This goes for low and high tech measures (Kuschk, 2005; Trösch, 2006). More und more experts are pleading for a turn to decentralised sewage and stormwater purification systems, as they are more eco-friendly and less expensive than central organised sewer systems (Hiessl, 2005). Furthermore, decentralised systems can be adapted more easily to both shrinking and rapidly growing cities (Cornel and Wagner, 2007).
