Circular solutions for :

Bucharest is the Romania’s largest city and capital.
The water system has undergone significant transitions in recent decades with new drinking water and wastewater treatment plants as well as distribution system leakage reductions. Biological sludge previously sent to anaerobic digestion, dewatered and landfilled until 2015 is now valorised in agriculture.

Currently, the operator faces the following challenges:

  1. provide safe and affordable sludge disposal / utilisation routes
  2. improve nutrient removal for compliance with UWWTD discharge requirements (10 mg/L N limit)
  3. optimise on-site energy management

Relevant Data

0.1 M PE
Design capacity
69 m3/day
flow treated
1 %
fully treated flow before discharge
1000 tons/year
Total sludge production
1 % electricity self sufficient
using biogas and CHP

Demo site:

Glina WWTP

Relevant sectors

Key innovations & actions

  • Investigate the utilisation of nutrients and carbon from sewage sludge in agriculture in order to inform the Romanian sludge management strategy
  • Long-term field study to assess safe and affordable sludge disposal routes
  • Increased local water sourcing for large users: feasibility study for direct industrial water reuse in a thermal power plant
  • Valorising biodegradable carbon agro- or food industry waste to enhance nitrogen removal during wastewater treatment
  • Examining options to reduce recirculated nitrogen load

Lead partners