Abstract: The invention relates to environment protection and can be used for cleaning industrial wastewater, liquidation of oil spills resulted from ecological disasters. The invention provides a reliable device for cleaning water from oil nano- and micro-particles and other impurities. Such device comprises a pump pumping a liquid flow of water with impurities particles. The pump is connected to a water dynamic purification unit (WDPU) with a channel including —a first type section with variable cross-section decreasing downstream, —a minimal passage cross-section, —a second type section with variable cross-section increasing downstream. The first type section includes a zone with a plurality of protrusions and deepenings. One protrusion has a maximal height greater than the heights of other protrusions. Preferable sizes and relations of channel elements are disclosed. The WDPU uses cavitation that allows decomposing oil particles, and reduction of the flow speed for commencement of cavitation and sedimentation time.

Abstract: The invention relates to environment protection and can be used for cleaning industrial wastewater, liquidation of oil spills resulted from ecological disasters. The invention provides a reliable device for cleaning water from oil nano- and micro-particles and other impurities. Such device comprises a pump pumping a liquid flow of water with impurities particles. The pump is connected to a water dynamic purification unit (WDPU) with a channel including a first type section with variable cross-section decreasing downstream, a minimal passage cross-section, a second type section with variable cross-section increasing downstream. The first type section includes a zone with a plurality of protrusions and deepenings. One protrusion has a maximal height greater than the heights of other protrusions. Preferable sizes and relations of channel elements are disclosed. The WDPU uses cavitation that allows decomposing oil particles, and reduction of the flow speed for commencement of cavitation and sedimentation time.