8th meeting of the collaborating partners of the “ANATHREPSI” project

8th meeting of the collaborating partners of the “ANATHREPSI” project

On Friday, 8th of April 2022, the 8th meeting of the collaborating partners of the ANATHREPSI project took place, via teleconference due to precautions taken against COVID 19. The meeting participants were:

Pantelis Gkliaos, TEDRA (Project Coordinator)

Prof. Anastasios Karabelas, NRRE/CPERI/CERTH (Scientifically Responsible)



  1. Karanasiou, NRRE/CPERI/CERTH
  2. Tsaridou, NRRE/CPERI/CERTH
  3. Oikonomou, TEDRA
  4. Patsikas, TEDRA

The meeting started with an overview of the technological procedures studied for the treatment of the liquid effluent of the Anaerobic Digestion unit which is installed at BIZIOS S.A. The two alternative procedures investigated by NRRE/CPERI/CERTH were:

  1. The precipitation of hydroxyapatite (HA) followed by membrane distillation (MD)
  2. Nanofiltration (NF), followed by struvite precipitation (MAP) in the NF retentate

The laboratory test results led to the selection of the 2nd technological route for application at pilot scale. The results of the tests executed at the pilot NF unit that was designed and constructed at NRRE/CPERI/CERTH and now is operating at BIZIOS S.A. facilities, were also presented. Pilot tests are currently in progress. The potential of the process products was also discussed and included the analysis and evaluation of:

  • the reclaimed water (NF permeate) in restricted irrigation and
  • the produced struvite after its precipitation in the NF retentate, as a fertilizer or in mixture with other fertilizers from FERTECH.

The promotion of the project’s outcomes was suggested to take place through seminars, exhibitions and relevant conferences, along with the demonstration of the proposed technology to potential users of the industry.

More information at the following link: www.anathrepsi.org