On the issue of the installation of the purification degree dependence of polluted spent mineral oil on the hydrocyclone constructive and geometrical parametersAndrey Glushchenko, Denis Molochnikov, Alexei Khokhlov, Evgeniy Proshkin and Ilnar GayazievBIO Web Conf., 17 (2020) 00018DOI: https://doi.org/10.1051/bioconf/20201700018