摘要
含油污水中含有复杂的化学物质,如氨类、石油类、酚类以及其它有机物质,这些化学物质大多会影响污水处理生化系统的正常运行。针对炼油厂“老三套”处理工艺对氨氮的降解效果较差,详细讨论了含油污水中抑制硝化过程的化学物质或指标。冲击试验表明:当进水COD≥120mg/l或酚≥2.0mg/l或油≥7.0mg/l或NH_3—N≥80mg/l时,氨氮的硝化过程明显受到抑制,而且恢复时间较长,一般需3～4天时间。
Various chemical substance, such as ammonia, oil, phenol and olher organic matter, exist in refinery sewage. These chemical substance can influence the biochemical system waslewaler. The inhibitories of nitration Which may result in the low effect ofimo-nitrogen degradation in refinery sewage treating are discussed in detail . The impact test shows that NH3 -N nitration is inhibited obviously when COD is more than 120 nig/1 or phenol more than 2. 0 mg/1 or oil more than 7. 0 mg/1 or NH3-N more than 80 mg/1, the period lo restore to normal condition will need 3-4 days or even longer.
出处
《广东化工》
CAS
2003年第4期48-49,52,共3页
Guangdong Chemical Industry
