Reliably measuring whether rivers or lakes run out of air

Wastewater carries large quantities of organic substances into the rivers and lakes, leading to heavy growth of bacteria and oxygen deficiency. Measurement methods have so far been incapable of measuring this organic pollution precisely. A new method co-developed by...

Friendly bacteria at centre stage

More than half of the energy required for wastewater treatment is used to supply oxygen to the biological reactor. The bacteria need oxygen to function. However, treatment plant operators do not know exactly where in the basin the oxygen is needed. That’s why they...