Technologies Inventory


A technology based on series of processes (evaporation, hydrolysis, oxidation) was developed which, according to the company, is suitable for industrial and agricultural wastewater treatment. The reactor produces fully treated and disinfected water ready for use, while it recovers useful by-products contained in the wastewater. However, the treated wastewater was not tested in agriculture.


The technology was developed in North Greece by individuals, who improved the vibrating system during oil production and succeeded separation of solid (olive paste) from the wastewater and thus removal of almost 99% of solid wastes simultaneously with the oil production. According to the inventors, the solid wastes were drastically reduced and thus the evaporation is more efficient after disposal while the wastewater could be suitable for land application. Also in this case such a possibility was not studied.

 Technagrotiki Ltd – Wastes evaporation

The technology developed by the Greek company “Technagrotiki Ltd” in cooperation with researchers from the Aegean University is composed of a closed heating system which includes a central burner which uses olive kernel pomace and a piping system which is in contact with an evaporation tank.

Vacuum Evaporation

A technology which can be taken in consideration for a more sustainable disposal of waste waters is under vacuum evaporation. Such technology derived from specific sectors belonging to industry such as galvanic industry, metallurgy, machine building, chemical and pharmaceutical production, food processing and textile industries. Its application to waste water with high concentration of pollution substances has already been tested on other substrates but it deserves to be deepened with regards to olive mills waste waters too.

Principle of process is very simple and it is based on the fact that under vacuum conditions liquids can boil at a much lower temperature than 100 °C, i.e. around 37 °C. As a result of the application of evaporator under vacuum is gotten demineralized water which can be re-used (around 85-95% of the starting liquid volume) and concentrated waste substances (5-15%) where all pollutants are condensed and which can be more easily disposed with a significant reduction of costs.

Inventory of all available technologies for agricultural waste (AW) treatment (funded in the period 1999-2012)
“This table is included in the deliverable “Inventory of all available technologies for AW treatment, grouped by level of development (lab, pilot, full scale)” which has been prepared in the line Action 2, by 31/3/2012.”