Krasnodar, 13 June – Yug Times. In June, the holiday season started in Krasnodar Region, but Anapa's beaches are still closed to tourists. Liquidation of the consequences of the fuel oil spill that occurred at the end of last year is still going on there. The main method used in this process is mechanical. Scientists are developing new technologies that will make the cleaning process faster and more efficient.
The scientific community has been actively involved in the elimination of consequences. 265 cleaning technologies were submitted for expertise, 183 of which received a favourable opinion. More than 50 cleaning technologies have been tested in full-scale conditions. Of these, 23 were recommended for use. They are aimed at cleaning beach soil, lifting fuel oil from a sunken tanker and the seabed, collecting fuel oil lenses and protecting the shore. Mechanical screening technology has been in use since January but has been found to be inadequate. Several experiments on bioremediation - cleaning using biological objects - have now been launched. Their results will be known in June this year.
- The uniqueness of the current situation is that Anapa is, first of all, a children's resort,’ says Viktor Anisimov, Director of the Kuban Science Foundation. - We are making sure that there is no fuel oil at all in the sand where children will be holidaying. However, we have come across the fact that there are no existing technologies that will allow us to obtain this result, so we hope that scientific research will help to solve this problem.
Now the main method of cleaning Anapa's beaches is mechanical. The scientific community is now faced with the task of developing physico-chemical and biological solutions.
Scientific centres in Russia offer their technologies, some of which are being tested.
- In April, we conducted the first field experiments on specially allocated areas of the beach of Blagoveshchenskaya village, which showed the effectiveness of our sand cleaning technology,’ says Yuri Sivkov, Head of the Department of Technosphere Safety at Tyumen Industrial University. - In a special container, sieved and moistened soil is mixed with reagents and as a result of a chemical reaction the mixture is divided into three fractions: fuel oil, water and sand. According to our calculations, it is possible to clean one tonne of sand in 2 hours of operation. Of course, the research is still ongoing. We need to analyse the quality of water obtained as a result of the technology application, to achieve even more efficient sand purification.
To eliminate the consequences of the fuel oil spill on land, the innovators proposed to develop a programme that would combine all methods of soil cleaning - mechanical, washing and sorption, fine cleaning and bioremediation - into three technological chains under the guidance of general contractors.
The plan is to clean all the sand removed, but after that it will not be returned to the beaches, but will be sought for other uses.
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