关键词: 页岩炼油, 高氨氮废水, 筛板塔, 吹脱

Abstract: In order to solve the problem of high ammonia- nitrogen wastewater treatment in Fushun type furnace shale oil refining, the simulated treatment of high ammonia- nitrogen wastewater was carried out. Combined with the existing biochemical system, calcium oxide was used as the alkali source, and the internal circulation sieve-plate tower tripping technology was adopted. The experimental results show that the removal rate of ammonia-nitrogen in shale oil refining wastewater was 97.2% under the conditions of the ratio of gas to liquid being 1100:1| the reaction temperature being 50℃ and the Ph value being 11. However, taking into account the requirements of reducing the cost of reagents and treating the influent with sewage treatment method, the optimum conditions of this process are determined as follows: the ratio of gas to liquid is 1100:1; the reaction temperature is 50℃ and the Ph value is 9-9.5.

Key words: shale oil refining, high ammonia-nitrogen wastewater, sieve-plate tower, stripping