| 摘要 |
A process for separating hydrocarbons from waste water, in particular aromatic hydrocarbons, by means of an absorbing filtering layer. The hydrocarbons dissolved and non-dissolved in the waste water are separated in a single stage. The waste water is supplied to a metallic slotted multiple tube filter, and a hydrocarbon-containing material, preferably coking duff, is used as an adsorbing filtering layer. Its grain size distribution in the particle size range between 0.05-0.2 mm has a mass proportion of at least 25 % by weight, with a total surface area of at least 1500 cm<2>/g. The filtering material can be made to float on the filtering elements or added to the waste water. |
