钢铁企业的焦化废水短程生物脱氮的研究_唐光临

第37卷　第11期2002年11月钢　　铁IRONANDSTEELVol.37,No.11November2002钢铁企业的焦化废水短程生物脱氮的研究*唐光临　徐楚韶　董凌燕　　　　蒯琳萍　　　　　(重庆大学)　　(比利时根特大学)摘　要　铁碳电池预处理—厌氧—好氧—好氧—缺氧多级SBR法处理焦化废水取得了良好的COD、氨氮脱除效果。在SBR反应器中创造条件,既保证了亚硝化反应的顺利进行,同时又保证了生成的亚硝酸盐与NH+4及有机物发生反应实现共同降解,亚硝酸盐与NH+4的反应弥补了反亚硝化过程中碳源的不足。系统运行稳定,氨氮浓度大于600mg/L时,却除率大于95%。该方法成本低,处理效果较好。关键词　亚硝化/反亚硝化　预处理　多段SBR法　焦化废水①STUDYONSHORTENEDBIOLOGICAL/DENITRIFICATIONOFCOKEOVENWASTEWATERINIRONANDSTEELCOMPANIESTANGGuanglin　XUChushao　DONGLingyan(ChongqingUniversity)KUAILinping(MicrobiolEcologyUniversityofGent)ABSTRACT　Thecokeovenwastewatercanbetreatedbymulti-stageSBRprocesswithhighremovalrateofNH3-NandCOD.TheconditionsareprovidedintheSBRtoensurethatnitrification/denitrificationvianitriteandammoniaoxidationcanbesimultaneouslycarriedout.Thereactionofammoniaandnitritecanmakeupforcarbonshortageintheprocessofdenitrification.TheremovalrateofNH3-Nisover95%inthetotalsystemeveniftheconcentrationofNH3-Nisover600mg/Latlowcost.KEYWORDS　nitrification/denitrification,pretreatment,multi-stageSBR,co