| 摘要 |
<p>The invention relates to an installation for scraping out greases from the water surface, in the grease settling and separating basins of the industrial and communal sewage treatment stations. According to the invention, the installation consists of a main compressed air duct (1), fastened along an upper edge of the settling basin (B), provided with an admission valve or electrogate (2) for manual or automatic control, to which there are connected some transversal ducts (3) provided with some helical holes, which form a 30 -40 angle, with the water surface, through which there get out compressed air jets which scrap out the grease from the water surface, towards a transversal gutter (4), the grease being evacuated into a bushing, by means of a bladed impeller (5), actuated by driving group (6).</p> |
