Development of a new dissolved oxygen sensor for activated sludge monitoring based on a membrane-less, self-calibrating, self-cleaning microdisk array sensing electrode

• Research unit: INNOSUISSE
• Project number: 8039.2;7 NMPP-NM

Short description (German)

Dosens II: Development of a new dissolved oxygen sensor for activated sludge monitoring based on a membrane-less, self-calibrating, self-cleaning microdisk array sensing electrode

Short description (English)

Development of a new dissolved oxygen sensor for activated sludge monitoring based on a membrane-less, self-calibrating, self-cleaning microdisk array sensing electrode

Abstract (German)

A new microfabricated oxygen sensor allowing innovating 'in-situ' self-calibration and self-cleaning functions was developed within the KTI 'DoSens' project. The sensor and its dedicated control electronics was field-tested in activated sludge. Positive and encouraging results were obtained but a sensor chip construction weakness was identified. In this follow up project, modifications of the sensor chip architecture will be implemented and tested in order to obtain the required sensor life-time and guarantee the commercial manufacturability of the chip.

Abstract (English)

A new microfabricated oxygen sensor allowing innovating 'in-situ' self-calibration and self-cleaning functions was developed within the KTI 'DoSens' project. The sensor and its dedicated control electronics was field-tested in activated sludge. Positive and encouraging results were obtained but a sensor chip construction weakness was identified. In this follow up project, modifications of the sensor chip architecture will be implemented and tested in order to obtain the required sensor life-time and guarantee the commercial manufacturability of the chip.