环己酮法生产己内酰胺废水处理工程实例.pdf

陨晕阅哉杂栽砸陨粤蕴宰粤栽耘砸驭宰粤杂栽耘宰粤栽耘砸 工业用水与废水 灾燥造援53 晕燥援3 Jun.袁 2022 环己酮法生产己内酰胺废水处理工程实例 常明 渊中国天辰工程有限公司袁 天津 300400冤 摘要院 环己酮法生产己内酰胺所产生的废水含大量偶氮尧 杂环尧 苯环以及其他多环类有机污染物袁 其中肟化 和重排装置所排废水有机物浓度高尧 可生化性差袁 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遥 工程运行结果表明袁 主要出水指标可达到GB18918要2002叶城镇污 水处理厂污染物排放标准曳中的一级A标准遥 介绍了该工艺的流程尧 主要设计参数尧 处理效果及运行成本遥 关键词院 环己酮法曰 己内酰胺废水曰 芬顿预氧化曰 水解酸化曰 多级AO曰 臭氧催化氧化 中图分类号院载苑03.1 文献标志码院 B 文章编号院摇员园园怨原圆源缘缘渊圆园22冤园3原园园59原园源 A projectexampleoftreatment ofwastewater from cyclohexanone methodproducingcaprolactam CHANGMing 渊ChinaTianchenEngineering Co.,Ltd., Tianjin300400, China冤 Abstract院 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要2002 Discharge standard of pollutants for municipal wastewater treatment plant. The processflow,maindesignparameters,treatmenteffectandcostwereintroduced. Keywords院 cyclohexanone method; wastewater from caprolactam production; Fenton pre-oxidation; hydro- lytic acidification; multi-stageAO;catalyticozonation 员 工程概况 圆 设计规模及水质 某化工厂新建 猿园万t辕 a 己内酰胺尧 圆苑万t辕 a 该项目废水处理站的设计规模为猿园园皂辕 澡遥 生猿 环己酮尧 源缘万t辕 a硫铵和远万t辕 a环