Name

Micropollutant removal in municipal sewage treatment: from the Swiss experience to European Directive

Speakers

Yoann le Goaziou

Authors

Yoann Le Goaziou, WSP, Switzerland
Pascal Wunderlin - VSA, Switzerland
Salvatore Plano - WSP, UK

Description

By 2035, the European Wastewater Directive mandates that sewage treatment works serving populations greater than 100,000 must implement measures to reduce micropollutant discharges into water bodies. The Directive identifies 13 micropollutants as “substances that can pollute water even at low concentrations” and requires an 80% removal rate for these substances. This legislation is based on a decade of experience in Swiss sewage treatment works.

Between 2006 and 2008, the Swiss government funded research to identify contamination sources and determine optimal treatment methods, focusing on end-of-pipe solutions at sewage treatment works. Various processes were tested at laboratory and pilot scales to develop effective implementation strategies and design criteria. Capital (CAPEX) and operational expenditures (OPEX) derived from these pilots informed legislative changes, including financial considerations. In 2016, Switzerland introduced micropollutant removal regulations.

This presentation will examine two case studies demonstrating the design and construction of WwTW for the same client but employing different treatment processes. These case studies will offer insights into the practical application of research findings.

Finally, the presentation will discuss the evolution of treatment processes, design guidelines, and OPEX, highlighting key considerations for future implementation across Europe.

Time

-

Location Name

Ludlow Concourse

Track

Posters