摘要
某乙烯厂废碱液处理系统废碱液乳化严重,形成的大量"黄油"无法自然沉降去除,造成管道及氧化反应器设备堵塞,频繁停车清理,无法保证系统的长周期运行。为此,采用改进型破乳分散剂、离子型助凝剂对废碱液进行预处理,使其黄油含量<200 mg/L,平均脱除率达93.0%,减轻了对后续污水处理系统的冲击,确保了系统的稳定运行,为同行业类似项目提供了借鉴。
There was a severe emulsification of spent caustic in spent caustic treatment system in an ethylene plant, a large number of ＂grease＂ was generated and could not be removed by natural sedi- mentation. The piping and oxidation reactor were blocked, which caused frequent downtime for cleaning and no long-term operation of the system. Therefore, the improved demulsifying dispersant and ionic coagulant aid were used for pretreatment of spent caustic. After the pretreatment, the content was less than 200mg/L, and the average removal rate was 93.0%. The impact on the subsequent wastewater treatment system was reduced, and the stable operation of the system was ensured. The findings provide reference for similar projects.
出处
《中国给水排水》
CAS
CSCD
北大核心
2012年第14期68-70,共3页
China Water & Wastewater
关键词
乙烯废碱液
改进型破乳分散剂
离子型助凝剂
脱油
ethylene spent caustic
improved demulsifying dispersant
ionic coagulant aid
grease removal
