Specifications: The factory PALMIE CATERING is a production unit for catering and restaurant products based in the Athens suburb industrial area. Its Root Zone plant has been constructed in 2007. The Root Zone plant of the PALMIE CATERING production unit incorporates both the mechanical and the biological treatment in one treatment plant, providing not only excellent wastewater cleaning but also a natural fertilizer for the unit's garden.

The mechanical treatment takes place in the first humification Root Zone lagoon. All the wastewater is collected in this area by natural flow directly from the kitchens. Here sedimentation of the solid matters takes place. The solid matters are kitchen remains and processed liquids such as oils, sauces, creams and milk remains. On the surface of the humification Root Zone lagoon they get disinfected, they dry and humificate.

The liquids biological treatment takes place in the second Root Zone lagoon. Immediately after its operation began the Root Zone plant was surveyed by the Agricultural University of Athens. Its high efficiency results were presented at the 8th Hydrogeological Conference, in October 2008, Athens. (see the presentation below)

Related Articles:

 Scientific Publication: Qualitative control and possibility of use of treated wastewater with the root-zone method (in English and Greek)

Presentation of the Root Zone plant of PALMIE CATERING in the AWW-Magazine Issue October 2011 (in English)

Presentation of the Root Zone plant of PALMIE CATERING in the OIKO magazine of KATHIMERINI newspaper (in Greek)

Presentation of the Root Zone Method is sludge humification capability (in Greek)

Technical Characteristics:

Unit's daily flow: 10 m3/d 

Size of the ROOT ZONE plant: 500 m2

Construction's year: 2007

Input COD-loading: 2500 mg/l 

Output COD-loading: 60-100 mg/l (data required 120 mg/l)