Abstract:

In order to solve the problem of unstable discharge caused by the fluctuation of water quality and water quantity in the treatment of high salinity wastewater, a domestic refining and chemical enterprise adopted the bio-augmentation technology without changing the original biochemical system process and facilities. The results showed that the COD of BAF effluent was reduced by 21.9%, ammonia nitrogen was reduced by 77.2%, total nitrogen removal rate was increased by 44.6%. The effluent COD of biochemical unit was stable at 50-60 mg/L, and the concentration of ammonia nitrogen was about 1 mg/L. The effect of bio-augmentation was remarkable. The implementation of this technology was beneficial to reduce the pressure of the advanced treatment unit, realize cost reduction and efficiency increase, and provide a strong guarantee for the stable operation of the treatment of saline wastewater.

Key words: bio-augmentation, refinery wastewater, biological agent, high salt sewage

摘要：

为解决高盐废水处理因水质和水量波动导致外排不稳定的问题，国内某炼化企业采用不改变原有生化系统工艺流程和设施的生物增效技术对其进行处理。结果表明，增效后BAF出水COD降低21.9%，氨氮降低77.2%，总氮去除率提高了44.6%；生化单元出水COD稳定在50~60 mg/L，氨氮为1 mg/L左右，生物增效效果显著。该技术的实施有利于降低深度处理单元处理压力，实现降本增效，为含盐废水处理的稳定运行提供了有力保障。

关键词: 生物增效, 炼化废水, 生物菌剂, 高盐废水

CLC Number: 

• X703.1