高氨氮废水论文UASBA-OBAF处理高氨氮废水应用研究.doc

《高氨氮废水论文UASBA-OBAF处理高氨氮废水应用研究.doc》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、高氨氮废水论文：UASB+A/O+BAF处理高氨氮废水应用研究【中文摘要】江西某化工厂以微生物法生产丙烯酰胺,生产废水中含有大量高浓度的有机物及氨氮。采用UASB+A/O+BAF组合工艺处理该生产废水,控制工艺条件使UASB培养驯化出产甲烷活性高的厌氧颗粒污泥,去除废水中绝大部分的有机物。采用前置反硝化的A/O系统作为脱氮的主体反应器,利用厌氧出水中的剩余有机物作为碳源,【英文摘要】MicroorganismwereusedtoproduceAMinachemicalplant,andhighconsistenceofCODcrandNH3-Nwerecausedintheproducew

2、astewater.ThecombinationofUASB+A/O+BAFwasusedtodisposethewastewater.Anaerobicgranularsludgewascultivatedandacclimatedbyfavorabletechnologicalconditions.Andmostorganicmatterwasremovedbygranularsludgebecauseofitshighspecificmethanogenicactivity.A/OprocesswasusedtoremoveNH3-N.NC3-andNO2-werereducedto

3、N2bydenitrificationwhichreducedorganicmatterascarbonsourceatthesametime.TheconsistenceofCODcrwaslowintheeffluent,anditwasfavorableforthereproductionofnitrobacteria.NH3-NwasoxidizedtoNC3-andNO2-bynitrobacteriaandwasremovedbyrefluxedtoanoxiczone.ThesurplusCODcrandNH3-NwereremovedbyBAFprocess,andthee

4、ffluentreachedsecondarystandardofthenationalsewageeffluentdischargestandards(GB8978-1996).Thispaperanalysedtheformingconditionofanaerobicgranularsludgeandtheprincipleofnitrogenremovebyanimalcule.ThestartofUASBprocessandA/OprocessandBAFprocessandoperationconditionwerealsostudiedinthispaper.(1)Theap

5、pearanceofanaerobicgranularsludgewasthesymbolofsuccessfulstartofUASBprocess.TheinfluentwasintermittentwhentheUASBstarted,andtheorganicloadwas1.0kgCODcr/(m3·d).TheraiseofCODcrandNH3-Nloadwasstepbystepuntilthedesignload.Whenthesystemrunsteady,theorganicloadwas3.2kgCODcr/(m3.d)andtheNH3-Nloadwas0.2kg

6、NH3-N/(m3·d).Theparticalsizeofgranularsludgewas0.5to2mmuntil100days.(2)TheCODcrconsistenceofinfluentwas3500to5000mg/L,andtheaveragewas4000mg/L,andtheeffluentCODcrconsistencewas1000to1200mg/L.Theremoveratewas75%to80%,andtheUASBhadtheabilitytoresistshockload.TheNH3-Nconsistenceofinfluentwas150to400m

7、g/L,andtheaveragewas250mg/L,andtheeffluentNH3-Nconsistencewasabout280mg/Landtheammoniationratewas15%.(3)AlargenumberofVFAwasproducedintheprocessofanaerobicmetabolismandcausedpHreductionandtheammoniationoforganicn