Micropollutant removal solutions

Your challenges

Utilities and industries are under pressure to:

Meet evolving micropollutant regulations and discharge requirements
Improve effluent quality and support water reuse
Balance treatment performance with CAPEX and OPEX
Upgrade existing assets with limited footprint
Reduce energy consumption and environmental impact

Many existing wastewater treatment plants were not originally designed for micropollutant removal. As regulations evolve and water-quality expectations increase, operators must achieve higher treatment performance while managing costs, infrastructure limitations and long-term sustainability objectives.

How can NSI meet your needs?

There is no single solution for micropollutant removal. The optimal approach depends on wastewater characteristics, treatment objectives, regulations and site-specific constraints.

The NSI Micro Resolve portfolio consists of three preferred treatment concepts designed to support utilities.

By combining oxidation, adsorption and biological treatment technologies, these integrated solutions help customers address water-quality objectives while balancing lifecycle costs, rising operational costs and environmental performance.

Next to these preferred solutions, the Micro Resolve portfolio offers a comprehensive range of treatment blocks that can be configured to meet site-specific water quality objectives and future treatment needs.

Our solutions

The NSI Micro Resolve portfolio combines proven treatment technologies into integrated concepts that help customers balance treatment performance, sustainability and lifecycle costs.

BODAC®
BODAC® is a sustainable biological treatment concept utilizing BioActive® carbon for micropollutant removal and effluent polishing, helping utilities achieve effective treatment while supporting sustainable operation and controlled lifecycle costs.

BODAC® + O₃
Combines biological treatment with advanced oxidation for enhanced micropollutant removal while maintaining focus on lifecycle costs and environmental performance.

Ideal for applications where enhanced removal performance is required while maintaining a balanced approach to sustainability and operating costs.

O₃ + BODAC® + OSW
A comprehensive treatment concept for demanding effluent quality objectives, combining oxidation and polishing technologies in a flexible treatment train.

Developed for challenging applications requiring high treatment performance, flexible integration, and advanced polishing.

Customer benefits

Micro Resolve helps utilities identify the most effective micropollutant removal strategy based on their water quality, treatment objectives, infrastructure and lifecycle requirements.

Tailored solutions for site-specific challenges

Supports compliance with future regulations

Balances performance, CAPEX and OPEX

Integrates with existing treatment infrastructure

Supports water reuse and sustainability goals

One partner from assessment to long-term operation

References

Municipal
Municipal wastewater

Winterswijk, the Netherlands

Advanced micropollutant removal for sewage treatment plant to improve water quality – WWTP Winterswijk

Waterschap Rijn en IJssel aimed to upgrade WWTP Winterswijk to further improve the water quality of the Groenlose Slinge, a sensitive lowland stream with vulnerable ecosystems. The existing wastewater treatment plant, designed for a capacity of 92,000 population equivalents (PE) and a flow of up to 860 m³/h, required an advanced treatment step to remove nutrients and pharmaceutical residues more effectively.

The challenge was to implement a future-proof and robust treatment concept capable of removing micropollutants, phosphorus, and ammonium while minimizing ecological risks and avoiding harmful by-products such as bromate. At the same time, the solution had to integrate seamlessly with the existing treatment infrastructure and support long-term operational flexibility.

More about this reference

Municipal
Municipal wastewater

Houten, the Netherlands

Advanced micropollutant removal for sewage treatment plant to reduce pharmaceutical residues – HDSR

Context

The Houten wastewater treatment plant (WWTP) in the Netherlands was identified as a national hotspot for medical residues in effluent. These residues pose a risk to the environment and drinking water sources, particularly the nearby ‘Lek’ Canal. To address this, water authority Hoogheemraadschap De Stichtse Rijnlanden commissioned Nijhuis Saur Industries to deliver a full-scale ozone installation for advanced treatment. The project also reflects a shift in Dutch municipal contracting toward collaborative “Construction Team” tenders for complex technologies.

Solution

Nijhuis Saur Industries, in partnership with Pannekoek GWW, Moekotte and Witteveen+Bos, designed and delivered a full-scale ozone treatment system for the Houten WWTP. The system targets the removal of pharmaceutical residues, improving effluent quality and protecting downstream water sources. The project was executed under a Construction Team tender model, enabling faster design, better risk allocation, and more accurate budgeting.