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印染污水处理--氧化法处理

光博环保公司 2019-01-10

   RANLIAOFENZIZHONGFASEJITUANDEBUBAOHESHUANGJIANKEBEIYANGHUADUANKAI、XINGCHENGFENZILIANGJIAOXIAODEYOUJIWUHUOWUJIWU,CONGERSHIRANLIAOSHIQUFASENENGLI。YANGHUAFABAOKUOHUAXUEYANGHUA、GUANGCUIHUAYANGHUAHECHAOSHENGBOYANGHUA。SUIRANJUTIGONGYIBUTONG,DANTUOSEJIZHIQUESHIXIANGTONGDE。HUAXUEYANGHUASHIMUQIANYANJIUJIAOWEICHENGSHUDEFANGFA。YANGHUAJIYIBANCAIYONGFentonSHIJI(Fe2+-H2O2)、CHOUYANG、LVQI、CILVSUANNADENG。CAIYONGFentonSHIJIZAIpH4~5SHICUIHUAH2O2SHENGCHENG·OH,SHIRANLIAOYANGHUATUOSE,SUOSHENGCHENGDEXINSHENGTAIFe2+HAIJUYOUCUNINGZUOYONG。YONGTIEXIE-H2O2CHULIYINRANWUSHUI,ZAIpH1~2SHIKESHENGCHENGXINSHENGTAIFe2+,QISHUIJIECHANWUYOUJIAOQIANGDEXIFUXUNINGZUOYONG,KESHIXIAOJIFENLEI、ENKUNLEIYINRANWUSHUISEDUTUOCHU99%YISHANG;YONGTIEFEN-H2O2DUIYINRAN   TUOSESHI,DANGTIEFENHANLIANGWEI1g/L、H2O2WEI1mmol/L、pH2~3SHI,TUOSEXIAOGUOJIJIA。YOUYUHUOXINGTANBIAOMIANHANYOUDALIANGSUANXINGJITUANRUQIANGJI、FENQIANGJIHEJIANXINGJITUAN,QIDUIRANLIAOFENZIJIYOUXIFUNENGLIYOUYOUCUIHUAZUOYONG。H2O2ZAIHUOXINGTANBIAOMIANNENGFENJIEFANGCHUOHUOSHENGCHENG·OH,SHIXIFUYUHUOXINGTANBIAOMIANDERANLIAOFENZIXUNSUYANGHUA,JIANGDIYINRANWUSHUIDESEDUHECOD。YOUZUOZHELIYONGFentonSHIJICHULIRANLIAOZHONGJIANTIHSUANDESHENGCHANFEIYE,FAXIANFEIYEZHONGSO42-HANLIANGSUIH2O2DETOUJIAERXUNSUZENGJIA,SHUOMINGHUANGSUANJI(QINSHUIJITUAN)CONGRANLIAOZHONGJIANTISHANGBEIYANGHUAQUCHU,QIJIEGUOSHIZENGDALEFENZIDESHUSHUIXING,DUIXUNINGTUOSEJIWEIYOULI。LIYONGXIAOJILIANGFentonSHIJICHULIHANFENWUSHUI,SHIWUSHUIZHONGDEYOUJIWURANWUJUHEYIGAIBIANQISHUIRONGXING,TONGYANGYOULIYUXUNINGTUOSE。DUIYUHANYOUJIAODUOQIANGJIDESHUIRONGXINGRANLIAOWUSHUIDETUOSE,YIKERUFAPAOZHI。

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  总之,氧化法是一种优良的印染污水脱色方法,但如果氧化程度不足,染料分子的发色基团可能被破坏而脱色,但其中的COD仍未除尽;若将染料分子充分氧化,能量、药剂量消耗可能会过大,成本太高,所以氧化法一般用于氧化-絮凝或絮凝-氧化工艺。采用氧化-絮凝工艺,目的是通过氧化法将水溶性染料分子变为疏水性或使阳离子染料分子转变为中性、阴性分子,以利絮凝除去。反之,采用絮凝-氧化工艺则是将氧化作为后处理步骤,对印染污水做深度处理以进一步去除残余色度及COD。

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