Page 19 - 《水资源与水工程学报》2022年第1期
P. 19

!33 " ! 1 #                       & ' ( ) & * + , -                               Vol.33No.1
               2022 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2022

            DOI:10.11705/j.issn.1672-643X.2022.01.03


              Š‹ŒŽ‘ BAF ’7“”:•–—˜d™š



                                                     1,2        2         2
                                              :;< , =44 , >?@
                (1. éê#6!$@A7«}¼, éê eQ 730070;2. eQe]82 @ARÃÒST2U, éê eQ 730070)
                 = >: KpH*W½#þŠÿ»¼‹QD²Œ(BAF) «YZ¿r–D²ä”, ]°Ÿƒk}­Ž‚¾¢#þ
                 Šÿrk}‘©?¾¢#þŠÿrŸ4‘ɏ]/Ï#©/‘šrņ‡È]。y¿z‰: W•À 14℃6
                                        +
                 K 12℃ì, Ÿ4‘Ÿ COD、NH —N、TN© TP r’ÅÇòkÁ^‚ 4.17%、4.67%、4.87%© 10.86%;14℃ì, k
                                        4
                             +
                 }‘Ÿ COD、NH —N、TN© TP r’ÅÇòkƒŸ4‘È 2.35%、2.37%、10.86%© 52.34%; W•À 14℃6K
                             4
                12℃ì, k}‘Ÿ TN、TP r’ÅÇòkÀ 45.98%© 97.74%Á^Ø 42.33%© 91.55%, ƒŸ4‘w 12℃ì TN、
                 TP r’ÅÇÈ 12.08%、57.01%, UƒŸ4‘w 14℃ì TN、TP r’ÅÇÈ 7.21%、46.15%;14℃ì, k}‘Éc
                 D²“É+]¨”-(Nitrosomonadales)、 6¨”-(Xanthomonadales)©•@-(Rhodocyclales)r"•
                 ƒŸ4‘òkȂ 3.1%、2.3%© 2.9%。W•6*¾ BAF ɏ]/Ï#Á„, ³¢#þŠÿd%²OF BAF
                 ɏ]/rÏ#, Š¾+]¨”-、 6¨”-©•@-r"•DЧ"rOF, \Á—‚*WŸ BAF
                 «YZ¿rÔ%»¼。
                 ?@A: ‹QD²Œ; *W; #þŠÿ; ]/Ï#; ‘šÅ†‡
                 BCDEF:X703   GHIJK:A    GLMF:1672643X(2022)01001507
                          InfluenceofironrichmediaonBAFtreatmenteffectand

                                    bacteriacommunityatlowtemperatures

                                                                                  2
                                                                   2
                                                 1,2
                                      YANZichun ,WEIMingming,SHIDengfeng
                    (1.KeyLaboratoryofYellowRiverWaterEnvironmentinGansuProvince,Lanzhou730070,China;2.Schoolof
                          EnvironmentandMunicipalEngineering ,LanzhouJiaotongUniversity,Lanzhou730070,China)
                 Abstract:Inordertoexplorethemicrobialmechanismoftreatmenteffectchangesaffectedbyironrich
                 mediainthebiologicalaeratedfilter(BAF)atlowtemperatures,contrastexperimentwasusedtoinvesti
                 gatethenumberofnitrifyingbacteriaandbacterialcommunitydiversityincontrolgroupwithoutironrich
                 mediaandexperimentalgroupwithironrichmedia.Theresultsshowedthatwhenthetemperaturede
                                                                    +
                 creasedfrom14℃ to12℃,theremovalrateofCOD,NH —N,TNandTPinthecontrolgroupde
                                                                   4
                 creasedby4.17%,4.67%,4.87% and10.86%,respectively.At14℃,theremovalrateofCOD,
                    +
                 NH —N,TNandTPintheexperimentalgroupwere2.35%,2.37%,10.86% and52.34% higher
                   4
                 thanthoseinthecontrolgroup.Whenthetemperaturedecreasedfrom14℃ to12℃,theremovalrateof
                 TNandTPintheexperimentalgroupdecreasedfrom45.98% and97.74% to42.33% and91.55%,
                 respectively,whichwere12.08% and57.01% higherthanthoseinthecontrolgroupat12℃,andstill
                7.21% and46.15% higherthanthoseinthecontrolgroupat14℃.At14℃,theabundanceof
                 Nitrosomonadales,XanthomonadalesandRhodocyclalesinthemiddlebioflimoftheexperimentalgroup
                 were3.1%,2.3% and2.9% higherthanthoseofthecontrolgroup,respectively.Thedecreaseofthe
                 temperaturecanreducethenumberofnitrifyingbacteriainBAF,whichcanberemediedbytheuseofi
                 ronrichmedia,becauseitisbeneficialtoincreasingthenumberofnitrifyingbacteriainBAF,aswellas
                 theabundanceof Nitrosomonadales,XanthomonadalesandRhodocyclales.Theincreaseofthesebacte

                !"#$:20200818; %&#$:20210107
                '()*: éê#&'*+,-(20JR2RA002); ./01&234,-(51568034)
                +,-.: öQ(1970-), <, éêË_?, @A, BC, †Ë$«YY€R'xGH。
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