乳业废水处理技术的研究与实践_关英杰

乳业废水处理技术的研究与实践关英杰1,邹华2＊,路福平1　(1.天津科技大学,天津300222;2.江南大学环境与土木工程学院,江苏无锡214122)摘要　结合某乳品加工厂废水处理工程,探讨了“UASB(UpflowAnaerobicSludgeBed)+SASS(SelectorActivatedSludgeSystem)”工艺处理乳业废水的可行性与可靠性。结果显示:COD浓度为4500～5000mg/L的乳业生产废水经UASB厌氧段处理后可降至700mg/L以下,去除率可达85%以上;SASS好氧段COD去除率可达90%以上,出水COD浓度稳定在60～70mg/L。采用UASB+SASS工艺处理乳品加工废水,实际运行可行,处理效率高,运行稳定,出水水质可达到国家污水综合排放标准(GB8978-1996)中的一级排放标准。关键词　乳业;废水;UASB;SASS;厌氧中图分类号　X703　　文献标识码　A　　文章编号　0517-6611(2008)30-13304-02StudyandPracticeofWastewaterTreatmentTechnologyofDairyIndustryGUANYing-jieetal　(TianjinUniversityofScienceandTechnology,Tianjin300222)Abstract　Combiningwiththewastewatertreatmentengineeringofadairyprocessingplant,thefeasibilityandreliabilityoftreatingdairywastewaterbyusingUASB(UpflowAnaerobicSludgeBed)andSASS(SelectorActivatedSludgeSystem)technologieswerediscussed.TheresultsshowedthatCODofdairyindustryproductionwastewaterwiththeoriginalconcentrationofCODof4500-5000mg/Lcouldbereducedbelow700mg/Landtheremovalratecouldreachmorethan85%afterUASBanaerobicsec