The executive board approved the plan for the new water treatment plant in Wilp, in the municipality of Voorst, at the end of 2018. The pilot installation at Terwolde is an important first step. All components of the new plant have been constructed in miniature in a special hall. The various technologies have all proved their value separately, but combining them is unique. The main aim of the pilot is to see whether everything works when linked together, and whether the full-scale installation will need more or less space than we have planned. That will allow Vallei en Veluwe to identify and rectify teething problems at an early stage and use the results of the pilot to make a final design for the plant. Click here to see how the plant will work (video in Dutch).

Unique concept

"It is a unique concept in the water treatment", says Bert van Vreeswijk of the water authority. "It will be an "all-in-one" circular treatment plant which will extract all possible raw materials from the waste water for recycling. We will use modern technologies to separate the water and the raw materials, which will then be processed into valuable products. That will help us achieve our ambition to be fully circular by 2050."

Cooperation

The tests at Terwolde will be carried out in close cooperation with Witteveen+Bos and Royal HaskoningDHV. Together with the water authority, they have formed the Dutch Water Refinery (DWR) construction consortium. The pilot is expected to deliver a ‘proof of concept’ within six months. The Vallei en Veluwe water authority is working together on this project with the municipality of Voorst, the province of Gelderland and the Ministry of Infrastructure and Water Management. We are also working with the companies Attero and Schoneveld Breeding and with knowledge partners Aquaminerals, STOWA and Wageningen University & Research (WUR).
Further information: www.vallei-veluwe.nl