Our environmental engineering department has been the project leader at the thermical evapoxidation plant with air depurating system set up at CIRVER (Integrated centre for the recovery, assessment and elimination of dangerous waste) built by SISAV (Auto-vila, Sapec, SGPS and Veolia-Propreté) in Chamusca, Portugal, and opened on June 4th, 2008 by the Ministry of Environment (Ministro do Ambiente luso), Mr. Francisco Nunes Correia.
The new system installed allows water treatment with high organic levels but without a heat power high enough to be incinerated. On the other hand, the organic compound is too high to be degradated using a biological system and it often shows high biotoxicity levels thus avoiding the usage of said process.

Treatment consists of a previous evaporation that generates gas with a significant volatile organic compound. This gas is sent to a non-thermal oxidation chamber where it is destroyed at 850ºC through combustion using recovery liquid fuel obtained from mineral oils and other hydrocarbons at the same plant.
The smoke generated is partially cooled in a recovery heater where vapor is produced at 9 bar allowing the operation of several plant processors such as the exchanger that heats liquid waste evaporated in the previous step of the treatment.

In order to comply with all the legal regulations governing emissions, the gas flow is treated at a final depuration step by means of a previous cooling in quench and sodium hydroxide backwashing in the filled tower. The quality of the gas flow emitted is verified by a series of measurement probes.

The whole system is controlled by PLC which monitors the complex operation of interconnected subunits .
Leaders in gas depuration such as Kalfrisa, S.A. and Ecotec S.A. have taken part in the system installation and its different elements. So, mounting competence and operation is thus certified and guaranteed.

Once in operation, this process requires training and theory and practical knowledge. ABAC is responsible for said instruction as well as any additional support and counseling in running the system to optimize the separation and depuration processes.
This follow-up is designed not only towards plant operation but also towards teaching the staff . Plant workers will learn how to handle the system on their own , how to adjust the process conditions, how to choose the type of waste for the most suitable treatment based on analysis results which will let them better separation and depuration efficiency.
After the consolidation of this project, ABAC Consultors, S.L. sets the international line of business as one of its expansion priorities in environmental vector treatment .