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印染污水电化学法脱色

光博环保公司 2019-01-10

   DIANHUAXUEFASHITONGGUODIANJIFANYINGSHIYINRANWUSHUIDEDAOJINGHUA。YINGGUOLVXIANTICHUYONGTIEDIANJICHULIWUSHUI,BINGZAICHENGSHIWUSHUICHULIZHONGSHISHI;MEIGUOSUIHOUDUIHANYOUWUSHUIJINXINGLEDIANHUAXUEFACHULI,DANYINNENGHAOJICHENGBENPIANGAOERWEISHOUZHONGSHI。SUIZHEDIANHUAXUEHEDIANLIGONGYEDEFAZHAN,GEZHONGGAOXIAOFANYINGQIDECHUXIANSHICHULICHENGBENDAFUXIAJIANG,DIANHUAXUEFANGFAYOUZHONGXINYINQIRENMENDEZHONGSHI。JINYIBUTIGAODIANJICAILIAODECUIHUAXINGNENG,TIGAODIANLIUXIAOLV,JIANRUODIANJIJIHUAYIJIANGDINENGHAORENGSHIJINHOUDEZHUGONGFANGXIANG。GENJUDIANJIFANYINGFANGSHIHUAFEN,DIANHUAXUEFANGFAKEXIFENWEINEIDIANJIEFA、DIANXUNINGHEDIANQIFUFA、DIANYANGHUAFA。

  ZUIZHUMINGDENEIDIANJIEFASHITIEXIEFA,JIJIANGZHUTIEXIEZUOWEILVLIAO,SHIYINRANJINMEIHUOTONGGUO,LIYONGFeHEFeCYURONGYEDEDIANWEICHA,FASHENGDIANJIFANYING,CHANSHENGJIAOGAOHUAXUEHUOXINGXINSHENGTAIH,NENGYUYINRANWUSHUIDUOZHONGZUFENFASHENGYANGHUAHAIYUANFANYING,POHUAIRANLIAOFASEJIEGOU,ERYANGJICHANSHENGDEXINSHENGTAIFe2+,QISHUIJIECHANWUYOUJIAOQIANGDEXIFUHEXUNINGZUOYONG。WEILEJINYIBUTIGAOCHUANTONGTIEXIEFADECHULIXIAOGUO,TIEXIEJINGGAIXINGHUOXIANGTIEXIEZHONGJIARUFUZHUTIANLIAO,ZENGJIALEYINRANWUSHUIZHONGWEIDIANCHIDESHUMUHUOYANZHANGRANLIAOKELIZAITIEXIEZHONGDETINGLIUSHIJIAN,SHIGAIXINGTIEXIEFADUIBURONGXINGRANLIAODESEDUHECODQUCHUTIGAOLE20%~30%。HAIYOUZUOZHECAIYONGWEIDIANJIE-SHUIJIESUANHUA/JIECHUYANGHUAGONGYICHULIYINRANWUSHUI,YIWEIDIANJIEZUOYUCHULI,TIGAOLEYINRANWUSHUIDEKESHENGHUAXING,SEDUYUCODQUCHULVCHAOGUO95%。YIFe、AlZUOYANGJI,LIYONGYINJICHANSHENGDEH2JIANGXUTIFUQI,CHENGDIANQIFUFA;LIYONGDIANJIFANYINGCHANSHENGDEFe2+HEAl3+SHIXIANXUNINGTUOSE,CHENGDIANXUNINGFA。

   由于施加脉冲电信号使电极反应时断时续,可降低超电势及扩散阻力,从而降低能耗与铁耗;同样,当施加交流电时,两极均可产生阳离子,更有利于金属离子与胶体作用,且两极极性经常变化,对防止电极钝化也有好处,所以电絮凝法的新近发展是脉冲电絮凝和交流电絮凝。以活性炭纤维作电极的电气浮法利用电极的导电、吸附、催化、氧化还原、气浮的综合性能,实现了吸附-电极反应-絮凝脱附一条龙处理工艺。采用石墨、钛板等作极板,以NaCl、Na2SO4或水中原有盐分作导电介质,对染料污水通电电解,阳极产生O2或Cl2,阴极产生的H2,通过O的氧化作用及H的还原作用破坏染料分子而使印染污水脱色。利用活性炭做电极,借助其吸附性能富集染料分子,在外电场作用下氧化发色基团,脱色率可达98%以上,COD去除率达80%以上。
 


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