Use Case 5

Demonstrating innovative solutions for the removal of organic contaminants from landfill leachates

  • Location

Crete, Greece

Use Case 5 - Crete, Greece
  • Leading partners

Eniaos Syndesmos Diacheirisis Aporrimaton (ESDAK)
Hellenic Centre for Marine Research (HCMR)
  • Background

Sanitary landfill leachate is a strongly polluted wastewater with a variety of components. It is characterized by high organic and inorganic pollutant concentrations and is extremely toxic if it is disposed of untreated to the environment.

The Leachate Treatment Plant of Pera Galini Sanitary Landfill, Crete is a tertiary treatment plant that receives the leachate produced by the Sanitary Landfill of Pera Galini. The Municipal Sanitary Landfill of Pera Galini is the largest landfill of the island and receives > 120,000 tons/year of municipal solid waste from the majority of Heraklion prefecture.

The average raw leachate flow rate entering the plant is 110 m3/day and includes physicochemical (coagulation, flocculation, DAF) and biochemical (MBR) treatment stages. The effluent after Reverse Osmosis (RO) treatment, degasification and chlorination is used for recirculation to the landfill cells and/or irrigation of the plants on the surface of the restored landfill cells.

  • Key facts

The presence of a wide range of chemicals in municipal solid waste landfill leachates is expected and documented. The objective of the Use Case 5 is to demonstrate the feasibility at real scale of upstream organic CoEC pollution remediation as a solution for preventing chemical pollution in the Mediterranean basin. A Microfluidic water system which is an innovative solution for the removal of organic contaminants from landfill leachates will be deployed and will be tested for its efficiency in removing micropollutants for the final effluent. In the same use case, an electrochemical sensor will be developed for monitoring micropollutants in the effluent and its applicability will be demonstrated.

  • Expected impacts

  • Up to 95% efficiency of microfluidic system in the leachates micropollutant reduction
  • Real-time pollutant sensors for the monitoring of the effluents
  • > 50% reduction in pollutants transfer to the water bodies.