The oil industry currently has technological solutions to reuse virtually all waste, that can be used for biomass production and even the leaves of the trees can be channeled into animal feed.
John Of course, researcher at the University of Tras-os-Montes and Alto Douro (UTAD), told Lusa on Saturday that the oil sector has undergone a major evolution in recent decades and the technology provides today’s answer to virtually all waste, but cautioned that some of the solutions “are still too expensive.”
The production of olive oil result the olive pomace, the seeds, leaves and vegetable water, which are an “environmental problem very complex,” we have a pollution load 200 to 400 times higher than domestic sewage. On average, the olive campaign in the country produces vegetable water equivalent to the sewage of 2.5 million people. There are various methods of treatment, since less costly, as a retention and evaporation ponds with other more expensive as the biological, thermal and physico-chemical treatment.
According to the investigator, currently Most of the waste is being sent to the refinery industry, which removes the remaining oil of moist cake for pomace oil production and the rest is used for burning.
In order to give a solution more global these wastes João Claro developed BioCombus project that takes advantage of the by-products of olive harvests and transforms them into biomass, which can be used as solid fuel for domestic boilers.
The prototype of this project was installed the Cooperative of growers of Murça, which is now being made increasing scale to industrial production. “This is a solution that 50 years ago is pursued by researchers from Mediterranean countries. It is a comprehensive solution because we are doing a treatment to comply with the law and moreover we are creating a commercial added value,” said the investigator.
A UTAD the research team has developed work towards the enhancement of the olive leaf in animal feed. According to the project leader researcher, Miguel Rodrigues, the results obtained so far indicate “a strong potential for application in diets for rabbits and ruminants”.
John Claro is also developing a system for the treatment of effluent from mills, as the waters that result from olive washing, making use of solar energy. “It can be said that this activity in recent years, has come to be more environmentally friendly, catering to various important factors, including a greater focus on the location of these facilities in industrial zones, stringent legislation and technological evolution of the equipment” concluded Lusa Manuel Cardoso, the Regional Directorate of Agriculture and North Fisheries (DRAPN).
In 1994 were in operation in Tras-os-Montes and Alto Douro 243 mills with however some of these units shut down due the requirements of the European Union in relation to licensing and new environmental requirements. Currently, they are functioning about 134 olive mills throughout the area of DRAPN.
In recent years, GNR have monitored the oil mills, and second police source, has experienced fewer failures of operating standards, from licensing the treatment of waste. Transmontana in the region, were inspected 65 mills in 2012 and raised 11 notices of administrative offense. In 2013, we audited 46 companies and raised 10 notices of administrative offense.
“Olive Oil 2015″ operation, conducted by the Protection Service of Nature and the Environment (SEPNA), is underway and runs until 31 deJaneiro .
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