Nijhuis Saur Industries completes first full-scale ozone solution at a Dutch STP for micropollutants and medical residue removal

After analysing treatment plants in the field of medical residues in wastewater, the Dutch sewage treatment plant (STP) at Houten, Netherlands emerged as a national hotspot.

The ozone plant is now fully operational at this STP for the additional removal and reduction of medical residues entering the environment (Source: HDSR)

This micropollutants removal solutions has improved the water quality in Amsterdam and Rijnkanaal, fitting with water treatment supplier Nijhuis Saur Industries’ purpose, called #MissionWater.

From design to solution

After completing the engineering phase with its partners, Pannekoek GWW and Witteveen+Bos, the plant was built, tested, and commissioned for Hoogheemraadschap De Stichtse Rijnlanden (HDSR).

Following the start-up of this new application, a team of HDSR Water Authority and Nijhuis Saur Industries experts reviewed the results to optimise the performance of the plant (Source: HDSR)

Ozone technology partnership with De Nora

After a comparison of different technologies, the HDSR Water Authority selected ozone technology as a basis of design. Its proven effective process to break down organic micropollutants in wastewater, such as endocrine-disrupting compounds and antibiotics, and its low energy consumption, limited use of scarce raw materials, and low life-cycle cost were factors contributing to the decision. The compact and modular installation is designed to treat a maximum of 870m3 of wastewater per hour using a De Nora Capital Controls ozone generator.

Another step forward to reduce the environmental impact of micropollutants

Henri Besselink, Nijhuis Saur Industries project director, said, “At Nijhuis Saur Industries, we [have the] experience to design and build the best available solution for the removal of medical residues from municipal wastewater. [Partnering] with De Nora for the supply of ozone generator technology is crucial to meet the regulatory requirements, as the project in Houten is the first out of four projects for different Dutch water authorities.”