For a new residential area to be built in the Dutch province of Gelderland, choices were made with regard to the various sustainability aspects. One important aspect concerns closed cycles for energy, nutrients and – to the extent possible – water. Ideally, the wastewater produced by households should be treated in such a way that it can be safely discharged into the residential area. Logically, the residential area would be connected to an existing wastewater treatment plant (WWTP). However, it lacks the necessary capacity and there is no possibility of expansion. Another possibility is to treat the waste water by another wastewater treatment plant. There is both hydraulic and biological overcapacity here, allowing the wastewater stream to be processed without expansion. This requires a 2.5 km long pressure line.
DeSaH’s quick scan provides insight into the extent to which decentralised collection and treatment techniques can fulfil the established sustainability criteria. Using key figures, the costs of the various treatment strategies are made transparent.
- scenario study