头孢类抗生素生产废水处理工程设计.docx

PAGE

PAGEI

头孢类抗生素生产废水处理工程设计

摘要

本研究针对头孢类抗生素制造过程中产生的日均7000m3高浓度难降解废水（COD浓度20000mg/L、BOD?5000mg/L、氨氮400mg/L、硫酸盐7000mg/L、pH值5-8）,以符合GB21903-2008《发酵类制药工业水污染物排放标准》的要求，采用“细格栅-调节池-气浮装置-升流式厌氧污泥床-序批式活性污泥法+活性炭吸附”集成处理系统，在前端利用物理预处理去除大颗粒物质、悬浮物和油类污染物，利用UASB反应器高效去除有机污染物(COD和BOD5质量去除率分别达85%和80%)，然后经过SBR工艺完成氮、磷污染物的处理(COD和氨氮质量去除率都大于90%)，最终经过活性炭吸附处理使COD质量浓度降低到36mg/L以下，完全达到排放限值要求。设计明确8座有效水深5m的UASB反应器、4组单池有效体积23040m3的SBR池等构筑物参数，工程总投资5487.75万元，年处理成本2941.2万元，吨水处理成本约10.7元，通过成熟工艺组合与优化设计，为同类高浓度制药废水处理提供了经济可行的工程范例。

关键词，制药类废水；污水污泥；UASB工艺；头孢类抗生素

Abstract

Thisdesigntargetsthedailyaverageof7000m3ofhigh-concentration,difficult-to-degradewastewater(influentCOD20000mg/L,BOD?5000mg/L,ammonianitrogen400mg/L,sulfate7000mg/L,pH5-8)generatedfromtheproductionofcephalosporinantibiotics,aimingtomeettheDischargeStandardsforWaterPollutantsfromFermentationPharmaceuticalIndustry(GB21903-2008).Thecombinedprocessincludesfinescreen-adjustmenttank-flotationtank-UASB-SBR-activatedcarbonadsorption:Afterthewastewaterundergoespretreatmenttoremovelargeparticles,suspendedsolids,andgrease,itistreatedinanUASBanaerobicreactortodegradeorganicmatter(withCODandBOD?removalratesreaching85%and80%,respectively).Subsequently,theSBRtankachievesefficientnitrogenandphosphorusremoval(withCODandammonianitrogenremovalratesexceeding90%),andfinally,activatedcarbonadsorptionreducestheeffluentCODto36mg/Lforcompliantdischarge.Thedesignspecifiesparametersfor8UASBreactorswithaneffectivewaterdepthof5m,4groupsofSBRtankswithaneffectivevolumeof23040m3,atotalprojectinvestmentof54.8775millionyuan,anannualprocessingcostof29.412millionyuan,andatreatmentcostofapproximately10.7yuanpertonofwater,providinganeconomicallyfeasibleengineeringexampleforthetreatmentofsimilarhigh-concentrationpharmaceuticalwastewaterthrough