摘要
环己酮法生产己内酰胺所产生的废水含大量偶氮、杂环、苯环以及其他多环类有机污染物,其中肟化和重排装置所排废水有机物浓度高、可生化性差,采用芬顿预氧化-水解酸化-两级AO-臭氧催化氧化-深度AO生化-后臭氧氧化组合工艺可有效处理该污水。工程运行结果表明,主要出水指标可达到GB 18918—2002《城镇污水处理厂污染物排放标准》中的一级A标准。介绍了该工艺的流程、主要设计参数、处理效果及运行成本。
Wastewater produced by the production of caprolactam using cyclohexanone method contains a large amount of azo,heterocyclic,benzene ring and other polycyclic organic pollutants.Among them,the wastewater discharged from oximation and rearrangement device has high organic matters concentration and poor biodegradability.Using a combined process of Fenton pre-oxidation-hydraulic acidification-two stage AO-catalytic ozonation-deep AO biochemical-post ozone oxidation can effectively treat the said kind of sewage.The results of the project operation showed that,the main effluent indicators could meet the requirement of level A grade 1 in GB 18918—2002 Discharge standard of pollutants for municipal wastewater treatment plant.The process flow,main design parameters,treatment effect and cost were introduced.
作者
常明
CHANG Ming(China Tianchen Engineering Co.,Ltd.,Tianjin 300400,China)
出处
《工业用水与废水》
CAS
2022年第3期59-62,共4页
Industrial Water & Wastewater
关键词
环己酮法
己内酰胺废水
芬顿预氧化
水解酸化
多级AO
臭氧催化氧化
cyclohexanone method
wastewater from caprolactam production
Fenton pre-oxidation
hydro-lytic acidification
multi-stage AO
catalytic ozonation
