第43卷第3期2023年3月Vol.43No.3Mar.,2023工业水处理IndustrialWaterTreatmentDOI:10.19965/j.cnki.iwt.2022-0531197某兰炭废水酚氨回收装置改造实践武祝民1,2,李若征1,2,滕济林1,2(1.北京国电富通科技发展有限责任公司,北京100071;2.国网电力科学研究院,江苏南京210003)[摘要]为解决某企业兰炭废水酚氨回收装置运行过程中出现的COD和总酚去除效果差、运行不稳定和副产品品质不合格等问题,分析了原有装置的运行情况和问题的产生原因,针对性地进行了循环氨水系统改造,并新增聚结过滤器+高精度油水分离器改造除油单元,新增脱酸单元及相关配套塔器改造脱氨单元,用甲基异丁基甲酮(MIBK)替代原有的萃取剂,并新增相关配套塔器改造脱酚单元。运行情况表明,改造后装置的出水水质为pH=6.68,NH4+-N、COD、总酚、总油分别为89、2265、490、32mg/L,不仅有效地改善了后续生化装置的运行工况,产出合格副产品,而且显著提高了运行的经济性和稳定性,解决了企业的兰炭废水处理难题。[关键词]兰炭废水;酚氨回收;除油;脱酸脱氨;工程改造[中图分类号]X703[文献标识码]B[文章编号]1005-829X(2023)03-0197-06Reformationpracticeofphenol-ammoniarecoveryunitfortreatingsemi-cokingwastewaterWUZhumin1,2,LIRuozheng1,2,TENGJilin1,2(1.BeijingGuodianFutongScienceandTechnologyDevelopmentCo.,Ltd.,Beijing100071,China;2.StatedGridElectricPowerResearchInstitute,Nanjing210003,China)Abstract:TosolvetheproblemssuchaspoorremovalofCODandtotalphenols,unstableoperationandunqualifiedby-productsofthephenol-ammoniarecoveryunitinacertainplantfortreatingsemi-cokingwastewater,theoperationoftheoriginalunitandthecausesoftheproblemswereanalyzed.Thecirculatingammoniawatersystemwasrevampedinatargetedway,andtheoilremovalunitwasrevampedbyaddingcoalescencefilterandhigh-precisionoil-waterseparator,thedeaminationunitwasrevampedbyaddingthedeacidificationunitandrelatedsupportingcolumns,theoriginalextractantwasreplacedbymethylisobutylketone(MIBK),andthedephenolizationunitwasrevampedbyaddingrelatedsupportingcolumns.TheoperationshowedthattheeffluentqualityoftherevampeddevicewaspH=6.68,andtheNH4+-N,COD,totalphenolandtotaloilwere89,2265,490and32mg/L...