Constant concern for the reuse of residuals
“Environmental awareness” is one of the key characteristics of the water sector. The sector has long been concerned with promoting energy-efficiency, limiting raw material use and reducing waste streams. Over the last few years, the reuse of water cycle residuals has steadily climbed up the priority agenda.
The water sector is environmentally aware and conscious of its impact
All water companies, working through Reststoffenunie are developing initiatives to stimulate the reuse of residuals. The companies call on KWR to accompany them and provide them with research support. The water company Vitens is recovering humus substances from groundwater with a high colour index . This residual can be used in agriculture as a soil improver. And the softening lime used in drinking water production is also, in the form of pellets, very suitable for reuse.
Energy, water and raw materials
The waterboards, too, are coming up with great initiatives. Under “The Energy Factory” project stream, they are developing projects aimed at making water treatment an energy producer – for example, by transforming wastewater sludge into biogas. Under “The Water Factory” project stream, they are embarking on initiatives to reuse wastewater effluent in industry. And there is a third project stream: namely, the ‘The Raw Materials Factory’. This rubric embraces all those projects directed at recovering materials (such as phosphorus) from wastewater. Together with KWR and Reststoffenunie, the waterboards are working on joint research projects within the framework of TKI Water Technology , among others.
© 2017 KWR Watercycle Research Institute