The course provides students with a survey of machinery applied to the protection of the environment with the emphasis on its construction. The course extends students` current theoretical knowledge by practical areas of the design of a single machine, apparatus and whole manufacturing lines exploited in the area of adjustment and recycling the waste, in ecological power industry, at biodegradation waste-processing, at liquid cleaning and ecological waste-processing and waste deactivation. The emphasis is put especially on the general design of machinery applied to the area of ecological performance and as on the design of particular machinery and its single parts specific for given area of a procedural technology.