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pH对中和沉淀法处理涂装废水效果影响及作用机理

发表日期:2020-09-07 15:33 文章编辑:苏州昊诺新闻编辑部 浏览次数: 所属栏目:产品选型

 TUZHUANGFEISHUISHIZAIQICHE、ZIXINGCHE、GANGTIEPEIJIANDENGTUZHUANGSHENGCHANGUOCHENGZHONGPAIFANGDEFEISHUI,ZHUYAOLAIYUANYUSUANXI、TUOZHI、BIAODIAO、LINHUA、DIANYONG、PENTUDENGGONGXU。JUTONGJI,WOGUOMEINIANZIXINGCHEPENTUGONGYICHANSHENGDEFEISHUIDAYUEWEI35YI t,MEINIANQICHEPENTUGONGYICHANSHENGDEFEISHUIDAYUEWEI80YI t。TUZHUANGFEISHUISHUIZHIFUZA,QIESUANXINGQIANG(pH=1.5~3.0),HANYOUDALIANGTIE、NIE、MENG、XIN、Cl−、SO42−DENGDUOZHONGWUJIWURANWU,RUXINLIZINONGDUWEI250~300 mg·L−1,WEILEMANZUHOUXUSHENGHUACHULIDUIJINSHUISHUIZHIDEXUQIUHERIYIYANGEDEPAIFANGBIAOZHUN,TUZHUANGFEISHUITONGCHANGCAIYONGZHONGHECHENDIANFAJINXINGCHULI。

  ZAIZHONGHECHENDIANFACHULITUZHUANGFEISHUIDEYANJIUZHONG,SUOYONGGONGYIYAOJIZHUYAOYOUNaOH、Ca(OH)2HENa2CO3,ZHUYAOYUANLISHIGENJUBUTONGZHONGJINSHUWEIRONGHUAHEWUDERONGDUJI,TONGGUOpHDIAOJIE,SHITONG、LV、XINHETIECHANSHENGQINGYANGHUAWUCHENDIANQUCHUHUOHUISHOU。YANJIUBIAOMING,ZHONGHECHENDIANFADUITUZHUANGFEISHUIZHONGJINSHULIZIDEQUCHUYUGONGYIYAOJIDEZHONGLEIMIQIEXIANGGUAN,RUGONGYIYAOJIWEINaOHSHI,QUCHU85%TIESHISUOXUpHWEI6.5,GONGYIYAOJIWEICa(OH)2HENa2CO3SHI,QUCHU85%TIESHISUOXUpHWEI7.5。TONGZHONGGONGYIYAOJIQUCHUBUTONGZHONGLEIJINSHULIZISUOXUDEpHYEBUTONG,GONGYIYAOJIWEINa2CO3SHI,LVZAIpHWEI6.0ZUOYOUQUCHULVDADAO90%;MENGZAIpHWEI9.0ZUOYOUQUCHULVDADAO90%。MUQIANZHONGHECHENDIANFACHULITUZHUANGFEISHUIYANJIUDUOCEZHONGYUHONGGUANSHUIZHIZHIBIAOFENXI,ZAIWEIGUANQUCHUJILIFANGMIANHAIYOUDAISHENRUYANJIU。ERWEIGUANQUCHUJILIFENXIKEYIJINYIBUJIASHENDUIGAIJISHUDELIJIE,JINERTUIDONGGAIJISHUDEJINBU。YINCI,ZAIZHONGHECHENDIANFACHULITUZHUANGFEISHUISHI,YANJIUpHDUITUZHUANGFEISHUIZHONGWURANWUQUCHUXIAOGUODEYINGXIANGBINGJINXINGXIANGGUANJILIFENXIJUYOUZHONGYAOYIYI。

  BENYANJIUJIEHETUZHUANGFEISHUISHUIZHITEDIAN[3](BAOKUOSUANXINGQIANG,ZHONGJINSHULIZIZHONGLEIDUO、HANLIANGGAO,BINGHANYOUSO42−、PO43−DENGYINLIZI),XITONGYANJIULEpHDUITUZHUANGFEISHUIZHONGYOUJIWUHEZHONGJINSHUDENGWURANWUQUCHUGUILV,TONGSHIJIEHEXUTILIDUFENBU、ZetaDIANWEI、XUTIXINGMAOHEXRDTUPUDENGBIAOZHENGFANGSHIDUIXIANGGUANWURANWUQUCHUJILIJINXINGJIEXI。

  1 CAILIAOYUFANGFA

  1.1 CAILIAO

  1.1.1 pHDIAOJIEJIPEIZHI

  pHDIAOJIEJIWEI50%(ZHILIANGFENSHU)DENaOHRONGYE,SUOYONGDENaOHSHIJIWEIFENXICHUN。

  1.1.2 SHIYANFEISHUI

  SHIYANFEISHUIQUZITIANJINSHIMOUCHEYEYOUXIANGONGSI,GAICHANGNIANCHAN 5WANTAODIANDONGZIXINGCHELINGPEIJIAN,MEITIANCHANSHENGFEISHUI50 m3ZUOYOU。SHIYANFEISHUIWEIZIXINGCHEMAOPIJIANDETUZHUANGGONGXU(SUANXI、LINHUAHEDIANYONG)CHANSHENGDETUZHUANGFEISHUI。FEISHUIYUANSHUISHUIZHIHESUOXUDADAODEPAIFANGBIAOZHUNRUBIAO1SUOSHI,PAIFANGBIAOZHUNZHIXING 《WUSHUIPAIRUCHENGZHENXIASHUIDAOSHUIZHIBIAOZHUN》 (GB/T 31962-2015 )BJIBIAOZHUN;FEISHUIYUANSHUIZHONGZHUYAODEYOUJIWUZHONGLEIRUTU1SUOSHI。

 

  TU1 TUZHUANGFEISHUIZHONGYOUJIWUDEGC-MSFENXI

 

  BIAO1 TUZHUANGFEISHUIDEYUANSHUISHUIZHIQINGKUANGJIPAIFANGBIAOZHUN

  1.2 FANGFA

  1.2.1 TUZHUANGFEISHUIDEpHDIAOJIE

  ZAI5GE1 LSHAOBEIZHONGFENBIEFANGZHIBOLIZHUANZI,FANGZHIZAICILIJIAOBANQISHANGJINXINGJIAOBAN,JIAOBANDESULVWEI100 r·min−1。SHIYANSHIFENBIEXIANGSHAOBEINEIZHUJIANTOUJIApHDIAOJIEJI,BINGCEDINGpH,ZHIDAO5GESHAOBEIZHONGDEpHFENBIEWENDINGZAI4、6、8、10、12。JIANGDIAOJIEHAOpHDESHAOBEIJINGZHI2 hHOU,FENBIEQUQISHANGQINGYEHEDIBUCHENDIANWUFANGRUQUYANGPINGZHONG,DAIYONG。

  1.2.2 TUZHUANGFEISHUIDEWURANWUZHIBIAOCEDING

  QUYUANSHUIHEpHDENGYU4、6、8、10、12DETUZHUANGFEISHUISHANGQINGYECEDINGCOD、ZONGLIN、ZONGXIN、ZONGTIEDENGZHIBIAO。KAOLVDAOTUZHUANGZHONGXUANFUGUTIJIAOSHAO,RUOCAIYONGSSZUOWEIPINGJIAZHIBIAO,KENENGHUIDAOZHIJIAODASHIYANWUCHA。YINCIZAIBENYANJIUZHONGCAIYONGZHUODUZUOWEIPINGJIAZHIBIAOLAIBIAOSHIFEISHUIZHONGXUANFUGUTIDEHANLIANG。

  LIANGQU50 mLSHANGQINGYEJINGLOUDOUJIARUDAO200 mLYUANDISHAOPINGZHONG,JIARUHESHIDECIZI,ZAIZHENGLIUSHAOPINGPINGKOUSAISHANGDAIYOUWENDUJIDESAIZI;KAIQILENGNINGSHUIHOU,MANMANSHENGWEN,SHIZHENGLIUSUDUYIMEIMIAOLIUXIA1~2DIYEDIWEIYI;DANGWENDUZAISHENGGAODAO150 ℃SHI,FANYINGPINGNEIWUZHIBIANWEIHEISE,BUZAIYOUYETIDIXIA;FENLIUCHUDEYETIJIARUWUSHUINa2SO4,FANGRUBINGXIANGJINGZHIGUOYE;JINGZHIHOUDEYETIFEN3CENG,SHANGCENGWEIYOUXIANG,ZHONGCENGWEIBINGJINGCENG,XIACENGNa2SO4KELI;50 ℃SHUIYUJIARE,BINGJINGCENGXIAOSHI,QU5 mLYOUCENGZAICIJIARUWUSHUINa2SO4;JINGZHIGUOYE,ZAIQUSHANGCENGYANGPINJINXINGGC-MSFENXI。

  1.2.3 TUZHUANGFEISHUIDEXUTITEXINGCEDING

  QUTUZHUANGFEISHUIJIAOBANWANCHENGHOU(RU1.2.1SUOSHU)DEHUNHEYECEDINGZetaDIANWEI、XUTILIDUFENBU。JIANGJIAOBANJIESHUHOU(RU1.2.1SUOSHU)DEXUTIQUCHU,DIYIDIDAOPINGZHENGDEZAIBOPIANSHANG,ZHIYUYANGPINJIASHANG,TONGGUODIAOJIEFENBIANLVDUIXUTIDEXINGMAOJINXINGQINGXIDIGUANCE。QUpHDENGYU4、6、8、10、12DETUZHUANGFEISHUIHEDIBUCHENDIANCHANWUFANGRULIXINGUANZHONG,LIXIN10 min,DAODIAOSHANGQINGYE,QUCHUDIBUDECHENDIANCHANWUJINXINGLENGDONGGANZAO,ZHIDAOWANQUANGANZAOWEIZHI,YANMOZHIQILIDU<0. 3 mm,YONGYUX-SHEXIANYANSHEFENXI。

  1.3 FENXICESHIFANGFA

  COD、ZONGLIN、ANDAN、YAXIAOTAIDAN、XIAOTAIDANHEZONGXINDENGJUNCAIYONGGUOJIABIAOZHUNFANGFA[7]CEDING。QIZHONGCODCAIYONGZHONGGESUANJIAFACEDING;ZONGLINCAIYONGGUOLIUSUANJIAXIAOJIEFACEDING;ANDANCAIYONGNASHISHIJIFENGUANGGUANGDUFACEDING,YAXIAOTAIDANCAIYONGN-(1-NAIJI)-YIERANGUANGDUFACEDING,XIAOTAIDANCAIYONGZIWAIFENGUANGGUANGDUFA(TU-1901;PERSEE,ZHONGGUO)CEDING;LVHUAWU、LIUSUANYANCAIYONGLIZISEPUFA(ICS1100;DAIAN,MEIGUO)CEDING;ZONGGE、ZONGMENG、ZONGNIE、ZONGTONG、ZONGGE、ZONGQIANCAIYONGDIANGANOUHEDENGLIZITIZHIPUFA(iCAP RQ;Thermo Fisher,DEGUO)CEDING;ZONGTIECAIYONGLINFEILUOLINFENGUANGGUANGDUFACEDING;ZONGGAI、ZONGMEI、ZONGXINCAIYONGHUOYANYUANZIXISHOUFA(SensAA;GBC,AODALIYA)CEDING。pHCAIYONGSHUZIHUASHOUCHIBIANXIEFENXIYI(ODEON;PONSEL,FAGUO)CEDING,ZHUODUCAIYONGSHUZIHUASHOUCHIBIANXIEZHUODUYI(2100Q;HACH,MEIGUO)CEDING。YOUJIWUZHONGLEICAIYONGQIXIANGSEPU-ZHIPULIANYONGYI(ExactiveTM GC OrbitrapTM GC-;Thermo Fisher,DEGUO)CEDING。ZetaDIANWEICAIYONGZetaDIANWEIFENXIYI(nano zs;MAERWEN,YINGGUO)CEDING,XUTILIDUFENBUCAIYONGJIGUANGLIDUJISHUYI(Versacount;IBR,MEIGUO)CEDING,XUTIDEXINGMAOCAIYONGXIANWEISHUMASHEXIANG(IX71;Olympus,RIBEN)CEDING,X-SHEXIANYANSHECAIYONGMiniFlex600(RIBENRigaku)CEDING。CESHICANSHU:BOZHANG0.154 mm (Cu/K-alpha1),GUANYA40 kV,GUANLIU200 mA,2θSAOMIAOFANWEIZAI10°~80°ZHIJIAN,SAOMIAOSUDUWEI4(°) · min−1。

  2 JIEGUOYUTAOLUN

  2.1 BUTONGpHDUITUZHUANGFEISHUIZHONGZONGLINNONGDU、COD、ZHUODU、ANDANDEYINGXIANGJIJILIFENXI

  TUZHUANGFEISHUIZHONGDEZONGLINNONGDU、CODSUIpHDEBIANHUAQINGKUANGRUTU2SUOSHI。DANGpHCONG2.18ZENGDADAO8SHI,SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEZONGLINNONGDUXUNSUXIAJIANG,ZAIpHWEI8SHIZONGLINDEQUCHULVDADAOZUIGAOZHI98.89%,DANGpHJIXUSHENGGAOSHI,ZONGLINNONGDUBUJIANGFANSHENG,DANGpHWEI10HE12SHI,ZONGLINQUCHULVFENBIEJIANGDIDAO67.27%HE20.49%。

 

  TU2 ZONGLINNONGDU、CODZHISUIpHDEBIANHUA

  TUZHUANGFEISHUIZHONGZONGLINDEQUCHUZHUYAOYILAIYUJINSHULIZIHEPO43−、HPO42−ZHIJIANDEQINHELI。ZAIpHCONG2.18ZENGJIADAO8SHI,SUIZHEpHDEZENGDA,PO43−、HPO42−ZAIRONGJIEXINGWUJILINZHONGZHANDEBIZHONGZENGDA,PO43−、HPO42−HEGAI、TIE、MEI、XINJIEHEXINGCHENGDECHENDIANZENGDUO,GULINDEQUCHULVZENGGAO;DANGpHCONG8ZENGJIADAO12SHI,FEISHUIZHONGDEJINSHULIZIHEHPO42−、PO43−JIOH−FASHENGFANYING,XINGCHENGCHENDIAN,DANGpHZENGGAO,OH−NONGDUZENGDA,JINSHULIZIYUOH−DEJIEHELVZENGGAO,DAOZHIHPO42−、PO43−YUJINSHULIZIJIEHEJIHUIJIANXIAO,GUDANGpHWEI10~12SHI,LINDEQUCHULVJIANGDI。

  TUZHUANGFEISHUIZHONGCODZHISUIpHDEBIANHUAQUSHIHEZONGLINNONGDUSUIpHDEBIANHUAQUSHIXIANGTONG。ZAIpH=8SHI,CODDEQUCHULVDADAOZUIGAO,WEI30.05%,DANGpHWEI10HE12SHI,CODQUCHULVFENBIEJIANGDIDAO17.31%HE16.15%。

  TUZHUANGFEISHUIZHONGCODDEQUCHUSHIJIZHONGJIZHI(RUXINGCHENGBURONGXINGJINSHULUOHEWU,QINGYANGHUAWUXUTIDEXIFUZUOYONG,DIANXINGZHONGHEHEJUANSAOWANGBU)GONGTONGZUOYONGDEJIEGUO,BUTONGpHTIAOJIANXIABUTONGJIZHIZUOYONGCHENGDUBUTONG。ZAIpHDIYU8SHI,YOUJIWUDEQUCHUZHUYAOSHIYOUYUTUZHUANGFEISHUIZHONGDEHANANJIHESUOJIYOUJIFENZI(RU5-ANJIJIECAOSUAN、ERLVYISUANDENG)YUJINSHUYANGLIZI(RUGELIZI、QIANLIZI、XINLIZIDENG)XIANGHUZUOYONGXINGCHENGBURONGXINGJINSHULUOHEWU[,ANJIHESUOJIYUJINSHULIZIDEZUOYONGJILIRUTU3SUOSHI。

 

  TU3 ANJIHESUOJIYUZHONGJINSHULIZIZUOYONGJILISHIYITU

  ZAIpHGAOYU8SHI,YOUJIWUDEQUCHUZHUYAOSHIQINGYANGHUAWUXUTIDUIYOUJIWUDEXIFUZUOYONG、DIANXINGZHONGHEZUOYONGHEJUANSAOWANGBUZUOYONGGONGTONGYINGXIANGDEJIEGUO。BUTONGDEpHXIA,Fe3+YUOH−JIEHEKEYIXINGCHENGFe(OH)2+、Fe(OH)2+、Fe(OH)3,SHANGSHU3ZHONGWUZHIKEYITONGGUODIANXINGZHONGHEHEJUANSAOWANGBUZUOYONGQUCHUFEISHUIZHONGDEYOUJIWU,JUTIDEZUOYONGGUOCHENGRUTU4SUOSHI。ZAIpH=8SHI,CODDEQUCHULVZUIGAO,ZHEIKENENGSHIYOUYUZHEIJIZHONGJIZHIGONGTONGZUOYONG,XIAOGUODADAOZUIJIA。DUIYUFe(OH)2+、Fe(OH)2+、Fe(OH)3DENGDEDIANXINGZHONGHEHEJUANSAOWANGBUZUOYONG,SHENDENGDUIBUTONGTIAOJIANXIAFe(III)ZHONGFe3+、Fe(OH)2+、Fe(OH)2+、Fe(OH)3SUOZHANDEBILIJINXINGYANJIU,JIEGUOBIAOMING,pHWEI2.18SHI,FEISHUIZHONGFe3+HEFe(OH)2+SHIFe(III)DEZHUYAOCHENGFEN,pHWEI4SHI,FEISHUIZHONGFe(OH)2+HEFe(OH)2+SHIFe(III)DEZHUYAOCHENGFEN,pHWEI6~8SHI,FEISHUIZHONGFe(OH)2+HEFe(OH)3SHIFe(III)DEZHUYAOCHENGFEN,pHZAI10~12SHI,FEISHUIZHONGFe(OH)3SHIFe(III)DEZHUYAOCHENGFEN。DANGTUZHUANGFEISHUIpHZAI2.18~8SHI,TUZHUANGFEISHUIZHONGFe(OH)2+、Fe(OH)2+HEFe(OH)3KEYITONGGUODIANXINGZHONGHEHEJUANSAOWANGBUZUOYONGQUCHUFEISHUIZHONGDEYOUJIWU,SHAOBUFENYOUJIWUYEKEYIXIFUZAIYIJINGXINGCHENGDEJINSHUQINGYANGHUAWUBIAOMIAN,DAOZHIDUICODDEQUCHUXIAOGUOZENGQIANG,pHCONG10DAO12,FEISHUIZHONGFe(OH)2+、Fe(OH)2+HANLIANGJIANSHAO,DIANXINGZHONGHEZUOYONGJIANRUO,JIpHZAI2.18~8SHI,CODDEQUCHULVZENGDA,pHZAI8~12SHI,CODDEQUCHULVJIANGDI。

 

  TU4 TUZHUANGFEISHUIZHONGYOUJIWUQUCHUZUOYONGJILISHIYITU

  涂装废水中的浊度随pH的变化情况如图5所示。当pH从2.18增大到10时,随着pH的升高,涂装废水中的浊度迅速下降,在pH为10时达到最低值,当pH继续升高时,浊度不降反升。在pH=10时,浊度的去除率达最高值,为97.64%。
 

  TU5 ZHUODUSUIpHDEBIANHUA

  ZHUODUDEQUCHUZHUYAOSHIYOUYUXIFUDIANZHONGHE、XIFUJIAQIAOYIJICHENDIANWUWANGBUDENG,pHDIAOJIESHIXIANGTUZHUANGFEISHUIZHONGJIARUNaOHSHIJIHUIPOHUAITIXIDEWENDINGXING,XUANFUWUZHIJIANDEPAICHILIXIAO,YIXINGCHENGXUTIDEDAOQUCHU。pHGUOGAOSHIXUANFUWUBIAOMIANDAILEDALIANGDEFUDIANHE,XUANFUWUZHIJIANCHILIZENGDA。DANGpH=8~12SHI,DIANZHONGHEZUOYONGJIANRUO;DANpH=8~12SHI,TUZHUANGFEISHUIZHONGCHENDIANWUZHONGLEIZENGDUO,CHENDIANWUXUTIKEYIXIFU、BAOGUO、JUJIXIXIAODEKELI,JUANSAOWANGBUZUOYONGZENGQIANG。ZHUODUZAIpH=10SHIQUCHULVZUIGAO,ZHEISHIYOUYUJIZHONGJILIZAICISHIGONGTONGZUOYONG,XIAOGUODADAOZUIJIA。JUTILIANXIHUOCANJIANGENGDUOXIANGGUANJISHUWENDANG。

  TUZHUANGFEISHUIZHONGDEANDANNONGDUSUIpHDEBIANHUAQINGKUANGRUTU6SUOSHI。DANGpHCONG2.18ZENGDADAO12SHI,SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEANDANNONGDUBUDUANXIAJIANG,ZAIpH=12SHI,ANDANQUCHULVDADAOZUIGAOZHI90.42%。DIANZHONGHE、CHENDIANWUXIFUYIJIMgNH4PO4CHENDIANXINGCHENGDENGSHIANDANQUCHUDEZHUYAOYUANYIN。

 

  TU6 ANDANNONGDUSUIpHDEBIANHUA

 2.2 BUTONGpHDUITUZHUANGFEISHUIZHONGZONGGAI、ZONGMEI、ZONGTIEDEYINGXIANGJIJILIFENXI

  TUZHUANGFEISHUIZHONGDEZONGGAI、ZONGMEI、ZONGTIENONGDUSUIpHDEBIANHUAQINGKUANGRUTU7SUOSHI。SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEZONGGAI、ZONGMEI、ZONGTIENONGDUBUDUANXIAJIANG,QIEpHCONG2.18ZENGDADAO8SHI,ZONGGAI、ZONGTIEQUCHUXIAOGUOXIANZHU,ZAIpH=12SHI,ZONGGAI、ZONGMEI、ZONGTIEQUCHULVJUNDADAOZUIGAOZHI,FENBIEWEI98.07%、95.03%、99.93%。

 

  TU7 ZONGGAI、ZONGMEI、ZONGTIEDENONGDUSUIpHDEBIANHUA

  TONGGUOXIANGTUZHUANGFEISHUIZHONGTOUJIAJIANXINGZHONGHEJI,KESHIJINSHULIZIYUQIANGJIFANYING,SHENGCHENGNANRONGDEJINSHUQINGYANGHUAWUCHENDIAN(RUSHI(1)SUOSHI)。YIJULINHUAXUELILUN,LINSUANYANZAISHUIZHONGDECUNZAIZHUANGTAIYOU H3PO4、H2PO4−、HPO42−、PO43−,BUTONGpHXIA,FEISHUIZHONGDELINHUIHEGAI、MEI、TIEDENGJINSHULIZIFANYINGSHENGCHENGRONGJIEDUDIDELINSUANYANCHENDIAN(SHI(2)HESHI(3)),RANHOUXUNINGCHENGJIAODAKELI,ZAIJIANXINGRONGYEZHONG,TIEYANNENGSHENGCHENGXIFULIHENQIANGDEJIAOTUAN,TANENGXIFUHEBUJIFEISHUIZHONGDEJINSHULIZI,CONGERSHIDEFEISHUIZHONGDEGAI、MEIHETIENONGDUSUIpHDESHENGGAOERXIAJIANG。

  2.3 BUTONGpHDUITUZHUANGFEISHUIZHONGZHONGJINSHULIZINONGDUDEYINGXIANGJIJILIFENXI

  BENBUFENYANJIULEBUTONGpHXIAZONGXIN、ZONGMENG、ZONGGE、ZONGNIE、ZONGQIANDENONGDUSUIpHBIANHUADEBIANHUAQUSHI,BINGDUIQIJINXINGJILIFENXI。

  TUZHUANGFEISHUIZHONGDEZONGXIN、ZONGMENGNONGDUSUIpHDEBIANHUAQINGKUANGRUTU8SUOSHI。DANGpHCONG2.18ZENGJIADAO10SHI,SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEZONGXINNONGDUXUNSUXIAJIANG,ZAIpHWEI10SHIDADAOZUIDIZHI,DANGpHJIXUSHENGGAOSHI,ZONGXINNONGDUBUJIANGFANSHENG。ZAIpH=10SHI,ZONGXINDEQUCHULVDADAOZUIGAOZHI,WEI99.95%。

 

  TU8 ZONGXINNONGDU、ZONGMENGNONGDUSUIpHDEBIANHUA

  YOUYUXINSHILIANGXINGWUZHI,pHDEFANWEIWEI1~7SHI,RONGYEZHONGXINDEXINGTAIZHUYAOSHIYIZn2+DEXINGSHICUNZAI,SUIZHEpHDEZENGDA,RONGJIETAIDEZn2+ZHUJIANJIANSHAO,ZHUYAOSHENGCHENGZn(OH)2CHENDIAN,LIZIXINGTAIJIANRUO,ZONGXINNONGDUJIANGDI。ZAIpH>10SHI,Zn(OH)2CHENDIANKAISHIZHUANHUAWEIFUJIADEZn(OH)3−HEZn(OH)42−(SHI(4)~SHI(7))。Zn(OH)2CHENDIANDEZUIJIApHZAI9~10ZHIJIAN, pHJIXUSHENGGAO,Zn(OH)2HUIFASHENGSHUIJIEFANYING,SHENGCHENGFUJIALIZIXINGTAIDEFUHEWUZn(OH)3−HEZn(OH)42−,ZONGXINNONGDUSHENGGAO。

  SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEZONGMENGNONGDUBUDUANXIAJIANG,ZAIpH=12SHI,ZONGMENGNONGDUWEI0.08 mg·L−1,QUCHULVWEI99.61%。

  TUZHUANGFEISHUIZHONGDEZONGGE、ZONGNIE、ZONGQIANNONGDUSUIpHDEBIANHUAQINGKUANGRUTU9SUOSHI。ZHONGHECHENDIANFADUIZHONGJINSHULIZIDEQUCHUZHUYAOSHIJIZHONGJIZHIGONGTONGZUOYONGDEJIEGUO。YIFANGMIANSUIZHEpHDEZENGJIA,TUZHUANGFEISHUIZHONGOH−NONGDUZENGDA,DANGpHZENGDADAOYIDINGCHENGDUSHI,ZHONGJINSHULIZIHUISHENGCHENGXIANGYINGQINGYANGHUAWUCHENDIANERDEDAOQUCHU;LINGYIFANGMIANTUZHUANGFEISHUIZHONGQINGYANGHUATIECHENDIANBIBIAOMIANJIDA,JUYOULIANGHAODEXIFUHEXUNINGZUOYONG,ZHONGJINSHULIZIXIFUZAIQINGYANGHUATIEBIAOMIANERDEDAOQUCHU。

 

  TU9 ZONGGE、ZONGNIE、ZONGQIANNONGDUSUIpHDEBIANHUA

  YOUTU9(a)KEJIAN,SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEZONGGENONGDU、ZONGNIENONGDUBUDUANXIAJIANG,ZAIpH=12SHI,ZONGGE、ZONGNIENONGDUFENBIEWEI0.33 mg·L−1HE0.08 mg·L−1,ZONGGE、ZONGNIEQUCHULVDADAOZUIGAO,FENBIEWEI96.40%HE97.52%。

  YOUTU9(b)KEJIAN, DANGpHCONG2.18ZENGDADAO10SHI,SUIZHEpHDESHENGGAO,TUZHUANGFEISHUIZHONGDEZONGQIANNONGDUXIAJIANG,ZAIpHWEI10SHIDADAOZUIDIZHI,XIANGYINGZUIGAOQUCHULVFENBIEWEI89.81%。DANGpHJIXUSHENGGAOSHI,ZONGQIANNONGDUBUJIANGFANSHENG。DANGpHGUOGAOSHI,Pb(OH)2HUIRONGJIE,SHENGCHENGPb(OH)3−FUHEWU(SHI(8)~SHI(11))[23-24],DAOZHIpHWEI10~12SHI,ZONGQIANQUCHULVJIANGDI。

  2.4 BUTONGpHDUITUZHUANGFEISHUIZHONGXUTITEXINGDEYINGXIANG

  WEILEJINYIBUKAOCHABUTONGpHXIATUZHUANGFEISHUIZHONGWURANWUDEQUCHUJILI(BAOKUOJUANSAOWANGBU、DIANXINGZHONGHE、CHENDIANWUXINGCHENGDENG),KECEDINGXUTITEXING(RUXUTILIDUFENBU、ZetaDIANWEIHEXUTIXINGMAO)HEXRDTUPU,FENBIERUTU10HETU11SUOSHI。

 

  TU10 XUTITEXINGSUIpHDEBIANHUA

  YOUTU10KEYIDECHU,SUIZHEpHZENGDA,TUZHUANGFEISHUIZHONGWURANWUDEQUCHUJILIZHUYAOSHIJUANSAOWANGBU、DIANXINGZHONGHEGONGTONGZUOYONG,BUTONGpHXIAGEZHONGJILIZUOYONGXIAOGUOYOUSUOBUTONG。TU10(a)BIAOSHIBUTONGpHXIATUZHUANGFEISHUIZHONGXUTIDELIDUFENBUQINGKUANG,D(0.1)、D(0.5)HED(0.9)SHIZHITIJIFENSHUJIFENDADAO10%、50%HE90%SUOHUODEDEKELIZHIJING,QIZHONGD(0.5)YEKERENWEISHITIJIPINGJUNLIJING[25]。pH=4、6、8、10HE12SHI,TUZHUANGFEISHUIDED(0.5)FENBIEWEI31.07、64.21、90.75、55.70HE14.90 μm,XUTILIJINGJINGLILEXIANZENGJIAHOUJIANGDIDEGUOCHENG。

  YOUTU10(b)KEYIDECHU,ZAIpHCONG4ZENGDADAO12DEGUOCHENGZHONG,TUZHUANGFEISHUIZHONGZetaDIANWEIBUDUANXIAJIANG,DANGpH=8SHI,Zeta DIANWEIZUIJIEJINLINGDIANSHI。YOUSHUIZHONGXUANFUKELIDEWENDINGXINGNENGYU Zeta DIANWEIGUANXIKEZHI,CISHIKELIJUJIDUGAO,CHENJIANGXINGNENGHAO。

  YOUTU10(c)KEYIDECHU,pHCONG4ZENGDADAO8DEGUOCHENGZHONG,XUTICHICUNZENGDA,TUANJUGENGJIAJINMI,pHCONG8ZENGDADAO12DEGUOCHENGZHONG,XUTIZHUJIANBIANSONGSAN,XUTICHICUNZHUJIANBIANXIAO。

 

  TU11 BUTONGpHSHICHENDIANCHANWUXRDTUPU

  YOUTU11KEYIDECHU,CHENDIANWUSHENGCHENGYESHITUZHUANGFEISHUIZHONGWURANWUQUCHUDEZHONGYAOYINSU。SUIZHEpHZENGDA,TUZHUANGFEISHUIZHONGJINSHULIZIHEHPO42−、PO43−、OH−SHENGCHENGCHENDIANWU,SHIDEJINSHULIZI、ZONGLINDENGWUJIWURANWUNONGDUJIANGDI。ZAIpH=2.18~8SHI,ZHUYAOSHENGCHENGLINSUANYANCHENDIAN,pH=10~12SHI,XINGCHENGDEQINGYANGHUAWUCHENDIANZHONGLEIZENGDUO,ZHEIYESHIpH=10~12SHIZONGLINNONGDUSHENGGAODEYUANYIN。

  YOUTU10HETU11KEZHI,DANGpH=8SHI,TUZHUANGFEISHUIZHONGD(0.5)ZUIDA、Zeta DIANWEIZUIJIEJINLINGDIANSHI,XUTITUANJUXINGNENGHAO,JINYIBUSHUOMINGCISHIXINGCHENGLEGENGDAXUTIKELICONGERJUANSAO、WANGBUGENGDUODEWURANWU,YOUZHUYUWURANWUDEQUCHU,DIANXINGZHONGHEYEFAHUILEZUOYONG。DANGpH=12SHI,TUZHUANGFEISHUIZHONGXINGCHENGDECHENDIANWUZHONGLEIZUIDUO,ZHEIDUIWUJIWURANWUDEQUCHUYOUZHONGYAOZUOYONG。

  3 JIELUN

  1)pHDUITUZHUANGFEISHUIZHONGDEBUTONGZHONGWURANWUCHULIXIAOGUOCUNZAIJIAODAYINGXIANG。DANGYICOD、ZONGLINWEIZHUYAOQUCHUMUBIAOSHI,ZUIJIApHWEI8;DANGYIZONGXINHEZONGQIANWEIZHUYAOQUCHUMUBIAOSHI,ZUIJIApHWEI10;DANGYIQITAJINSHULIZIHEANDANWEIZHUYAOQUCHUMUBIAOSHI,ZUIJIApHWEI12。

  2)ZONGLINDEQUCHUZHUYAOYILAIYUJINSHULIZIHEPO43−、HPO42−ZHIJIANDEQINHELI,ZAIpH=2.18~10SHI,ZHUYAOSHENGCHENGLINSUANYANCHENDIAN,pH=10~12SHI,XINGCHENGDEQINGYANGHUAWUCHENDIANZHONGLEIZENGDUO,ZHEIYESHIpH=10~12SHIZONGLINNONGDUSHENGGAODEYUANYIN;CODDEQUCHUJIZHISUIZHEpHDEBIANHUAERYOUSUOCHAYI,ZAIpH =2.18~8SHI,CODDEQUCHUZHUYAOYOUYUBURONGXINGJINSHULUOHEWUDEXINGCHENG、DIANXINGZHONGHEHEJUANSAOWANGBU,ZAIpH =10~12SHI,ZHUYAODEZUOYONGJIZHIWEIQINGYANGHUAWUXUTIDEXIFUZUOYONGHEJUANSAOWANGBU;DIANZHONGHE、CHENDIANWUXIFUYIJIMgNH4PO4CHENDIANXINGCHENGDENGSHIANDANQUCHUDEZHUYAOYUANYIN;JINSHULIZIDEQUCHUJIZHIZHUYAOYOULINSUANYANCHENDIANDEXINGCHENG、QINGYANGHUAWUCHENDIANDEXINGCHENG、QINGYANGHUATIECHENDIANDEXIFUXUNINGZUOYONG,TONGSHIXIN、QIANDENGJINSHULIZIWEILIANGXINGWUZHI,GUOGAOpHBULIYUQIQUCHU。

  3)ZAIKAOLVHOUXUSHENGHUACHULISHI,DEDAOZHONGHECHENDIANFACHULITUZHUANGFEISHUIDESHIYIpH(pH=8),CHULIHOUTUZHUANGFEISHUIZHONGDEQUANBUZHONGJINSHULIZINONGDUHEZONGLINNONGDUJUNDADAO《WUSHUIPAIRUCHENGZHENXIASHUIDAOSHUIZHIBIAOZHUN》 (GB/T 31962-2015 )BJIBIAOZHUN。(LAIYUAN:HUANJINGGONGCHENGXUEBAO ZUOZHE:FUHAIJUAN)

pH对中和沉淀法处理涂装废水效果影响及作用机理

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