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临(Lin)沂(Yi)污(Wu)水(Shui)处(Chu)理(Li)工(Gong)程(Cheng)的(De)沉(Chen)淀(Dian)法(Fa)

发(Fa)布(Bu)日(Ri)期(Qi):(?)2019-11-30 17:11:23  点(Dian)击(Ji)量(Liang):(?)2566   信(Xin)息(Xi)来(Lai)源(Yuan):(?)原(Yuan)创(Chuang)

 (?) (?)(1) 中(Zhong)和(He)沉(Chen)淀(Dian)法(Fa)。(?)临(Lin)沂(Yi)污(Wu)水(Shui)处(Chu)理(Li)工(Gong)程(Cheng)在(Zai)含(Han)重(Zhong)金(Jin)属(Shu)的(De)废(Fei)水(Shui)中(Zhong)加(Jia)入(Ru)碱(Jian)进(Jin)行(Xing)中(Zhong)和(He)反(Fan)应(Ying),(?)使(Shi)重(Zhong)金(Jin)属(Shu)生(Sheng)成(Cheng)不(Bu)溶(Rong)于(Yu)水(Shui)的(De)氢(Qing)氧(Yang)化(Hua)物(Wu)沉(Chen)淀(Dian)形(Xing)式(Shi)加(Jia)以(Yi)分(Fen)离(Li)。(?)中(Zhong)和(He)沉(Chen)淀(Dian)法(Fa)操(Cao)作(Zuo)简(Jian)单(Dan),(?)是(Shi)常(Chang)用(Yong)的(De)处(Chu)理(Li)废(Fei)水(Shui)方(Fang)法(Fa)。(?)
(2) 临(Lin)沂(Yi)污(Wu)水(Shui)处(Chu)理(Li)工(Gong)程(Cheng)硫(Liu)化(Hua)物(Wu)沉(Chen)淀(Dian)法(Fa)。(?)加(Jia)入(Ru)硫(Liu)化(Hua)物(Wu)使(Shi)废(Fei)水(Shui)中(Zhong)重(Zhong)金(Jin)属(Shu)离(Li)子(Zi)生(Sheng)成(Cheng)硫(Liu)化(Hua)物(Wu)沉(Chen)淀(Dian)而(?)除(Chu)去(Qu)的(De)方(Fang)法(Fa)。(?)与(Yu)中(Zhong)和(He)沉(Chen)淀(Dian)法(Fa)相(Xiang)比(Bi),(?)硫(Liu)化(Hua)物(Wu)沉(Chen)淀(Dian)法(Fa)的(De)优(You)点(Dian)是(Shi):(?)重(Zhong)金(Jin)属(Shu)硫(Liu)化(Hua)物(Wu)溶(Rong)解(Jie)度(Du)比(Bi)其(Qi)氢(Qing)氧(Yang)化(Hua)物(Wu)的(De)溶(Rong)解(Jie)度(Du)更(Geng)低(Di) ,(?)反(Fan) 应(Ying)pH值(Zhi)在(Zai)7~(?)9之(Zhi)间(Jian),(?)处(Chu)理(Li)后(Hou)的(De)废(Fei)水(Shui)一(Yi)般(Ban)不(Bu)用(Yong)中(Zhong)和(He),(?)处(Chu)理(Li)效(Xiao)果(Guo)更(Geng)好(Hao)。(?)但(Dan)硫(Liu)化(Hua)物(Wu)沉(Chen)淀(Dian)法(Fa)的(De)缺(Que)点(Dian)是(Shi):(?)硫(Liu)化(Hua)物(Wu)沉(Chen)淀(Dian)颗(Ke)粒(Li)小(Xiao),(?)易(Yi)形(Xing)成(Cheng)胶(Jiao)体(Ti),(?)硫(Liu)化(Hua)物(Wu)沉(Chen)淀(Dian)在(Zai)水(Shui)中(Zhong)残(Can)留(Liu),(?)遇(Yu)酸(Suan)生(Sheng)成(Cheng)气(Qi)体(Ti),(?)可(Ke)能(Neng)造(Zao)成(Cheng)二(?)次(Ci)污(Wu)染(Ran)。(?)
(3) 螯(Ao)合(He)沉(Chen)淀(Dian)法(Fa)。(?)临(Lin)沂(Yi)污(Wu)水(Shui)处(Chu)理(Li)工(Gong)程(Cheng)通(Tong)过(Guo)高(Gao)分(Fen)子(Zi)重(Zhong)金(Jin)属(Shu)捕(Bu)集(Ji)沉(Chen)淀(Dian)剂(Ji)(DTCR)在(Zai)常(Chang)温(Wen)下(Xia)与(Yu)废(Fei)水(Shui)中(Zhong)Hg2+、(?)Cd2+、(?)Cu2+、(?)Pb2+、(?)Mn2+、(?)Ni2+、(?)Zn2+及(Ji)Cr3+等(Deng)重(Zhong)金(Jin)属(Shu)离(Li)子(Zi)迅(Xun)速(Su)反(Fan)应(Ying),(?)生(Sheng)成(Cheng)不(Bu)溶(Rong)水(Shui)的(De)螯(Ao)合(He)盐(Yan),(?)再(Zai)加(Jia) 入(Ru)少(Shao) 量(Liang)有(You)机(Ji)或(Huo)(和(He))无(Wu)机(Ji)絮(Xu)凝(Ning)剂(Ji),(?)形(Xing)成(Cheng)絮(Xu)状(Zhuang)沉(Chen)淀(Dian),(?)从(Cong)而(?)达(Da)到(Dao)捕(Bu)集(Ji)去(Qu)除(Chu)重(Zhong)金(Jin)属(Shu)的(De)目(Mu)的(De)。(?)DTCR系(Xi)列(Lie)药(Yao)剂(Ji)处(Chu)理(Li)电(Dian)镀(Du)废(Fei)水(Shui)的(De)特(Te)点(Dian)是(Shi)可(Ke)同(Tong)时(Shi)去(Qu)除(Chu)多(Duo)种(Zhong)重(Zhong)金(Jin)属(Shu)离(Li)子(Zi),(?)对(Dui)重(Zhong)金(Jin)属(Shu)离(Li)子(Zi)以(Yi)络(Luo)合(He)盐(Yan)形(Xing)式(Shi)存(Cun)在(Zai)的(De)情(Qing)况(Kuang),(?)也(Ye)能(Neng)发(Fa)挥(Hui)良(Liang) 好(Hao)的(De) 去(Qu)除(Chu)效(Xiao)果(Guo),(?)去(Qu)除(Chu)胶(Jiao)质(Zhi)重(Zhong)金(Jin)属(Shu)不(Bu)受(Shou)共(Gong)存(Cun)盐(Yan)类(Lei)的(De)影(Ying)响(Xiang),(?)具(Ju)有(You)较(Jiao)好(Hao)的(De)发(Fa)展(Zhan)前(Qian)景(Jing)。(?)
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