Environmental

Biogas Production

The biomass produced in activated sludge and clarifying tanks is stabilised in the digestion tower and used to produce biogas. A thorough mixing of the sludge increases the gas yield and reduces its retention time in the reactor. During the process, gas is withdrawn from the upper part of the digestion tower, compressed and reintroduced through the nozzles at the bottom.

Distillation / Solvent Recovery

Wastewater that is contaminated with solvents must be treated for environmental reasons. The simplest method is vacuum distilling, where the low boiling point fraction is evaporated and then condensed. The wastewater is then transported elsewhere for further use.