聚合(he)氯化鋁圖片
聚合氯化鋁對cod去除率有那些影響 ？
聚合氯化鋁其實(shi)都是含有一定量(liang)硫酸亞鐵的,一般是淺(qian)黃色,顏色越深含(han)量(liang)(liang)越高(gao),而亞(ya)鐵(tie)離子(zi)在水中(zhong)是會引起(qi)COD結果偏高(gao)的(de).氧化(hua)(hua)(hua)劑將還原(yuan)(yuan)劑氧化(hua)(hua)(hua)，亞(ya)鐵(tie)作為(wei)還原(yuan)(yuan)劑，測(ce)水中(zhong)還原(yuan)(yuan)性物(wu)質(zhi)(zhi)，加(jia)到(dao)水中(zhong)時(shi),氯(lv)離子(zi)是游離出(chu)來的(de),在COD測(ce)試時(shi)需要用(yong)(yong)(yong)硫(liu)酸汞(gong)來屏蔽氯(lv)離子(zi),如果硫(liu)酸汞(gong)沒加(jia)或用(yong)(yong)(yong)量(liang)(liang)少,也有(you)可(ke)(ke)能(neng)造(zao)成(cheng)COD偏高(gao)。另外一個造(zao)成(cheng)COD反增的(de)原(yuan)(yuan)因可(ke)(ke)能(neng)是，聚合氯(lv)化(hua)(hua)(hua)鋁本身(shen)含(han)有(you)少量(liang)(liang)還原(yuan)(yuan)性物(wu)質(zhi)(zhi)，隨著(zhu)產品的(de)用(yong)(yong)(yong)量(liang)(liang)增加(jia)，對污水中(zhong)的(de)COD達到(dao)一定值，而帶入的(de)COD卻不斷增加(jia)，所以(yi)水中(zhong)COD反而增加(jia)。簡(jian)單的(de)可(ke)(ke)以(yi)理解(jie)為(wei)PAC含(han)有(you)氯(lv)離子(zi)，加(jia)藥量(liang)(liang)過大，氯(lv)離子(zi)含(han)量(liang)(liang)升高(gao)，COD也會升高(gao)。污水生化(hua)(hua)(hua)處理，去除COD建議(yi)使(shi)用(yong)(yong)(yong)COD降解(jie)菌/復合菌種(zhong)
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