International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The problem for pollution of sea environment is universal and has diverse aspects and indications. At its solving is worked in two directions. On the one hand – by establishment and elaboration of the technical methods and on other hand–by preparation, coordination and approval of legal acts.

The preservation of ecological system of Black Sea is associated with care for the rivers which flow into it. Bulgaria makes efforts to implement high standards for preservation of the Danube River which represents unique water basin. The improvement of quality of its waters unites the efforts of the riverside countries which contributes for preservation of the ecological system of Black Sea.