Tackling the problem of energy saving in the Saint-Petersburg wastewater system

Summary

The technologies of primary and secondary sludge treatment at the Saint-Petersburg wastewater treatment facilities are considered. The technologies of thermal hydrolysis and thermophilic and mesophilic digestion were suggested by European companies PWT (Germany), Veolia (OTV, France) and Cambi (Norway). Implementing the project of using the energy potential of wastewater sludge will allow Saint-Petersburg Vodokanal PUE to gain unique experience of systematic approach to the solution of sludge utilization problem.

Key words

sludge , fermentation , biogas , methane tank , mesophilic process , thermophilic process , thermal hydrolysis