一、前言焦化污水是在煤的高温干馏、煤气净化以及化工产品精制过程中产生的污水,其组成复杂、浓度高、毒性大。主要来源有:一是剩余氨水,它是煤干馏及煤气冷却过程产生的污水;二是煤气净化过程产生的污水,如煤气终冷水和粗苯分离水等;三是焦油、粗苯等精制过程及其它场合产生的污水。其中剩余氨水占总污水量一半以上,也是氨氮的主要来源。焦化污水从色谱图中初步显示含有几百种有机组分,其中,含有高浓度的酚、多环芳 I. Introduction Coking sewage is the high-temperature carbonization of coal, gas purification and chemical products produced in the refining process of sewage, its complex composition, high concentration, toxicity. The main sources are: First, the remaining ammonia, which is produced by the distillation of coal and gas cooling water; Second, the gas generated during the purification process of sewage, such as gas and cold water, crude benzene separation of water; Third, tar, crude benzene refining process And other occasions generated sewage. The remaining ammonia accounted for more than half of the total sewage, ammonia is also the main source. Coking wastewater from the chromatogram initially showed that contains hundreds of organic components, including high concentrations of phenol, polycyclic aromatic