Quantitative model of coagulation with inorganic polymer flocculant PACI: Application of the PCNM
Quantitative model of coagulation with inorganic polymer flocculant PACI: Application of the PCNM
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DOI：
10.1061/(asce)0733-9372(2006)132:5(434
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发表时间：
2006-05
影响因子：
2.2
通讯作者：
Dongsheng Wang;Hong-xiao Tang
中科院分区：
文献类型：
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作者：
Dongsheng Wang;Hong-xiao Tang
本文以聚合氯化铝（PACl）为例，研究了无机高分子絮凝剂（IPFs）混凝的定量模型。应用改进的沉淀电荷-中和模型（M-PCNM）进行了检查和讨论，包括剂量，pH值，和B值的变化所产生的混凝图。该模型进行了修改，通过使用测量的Al分数作为模型输入。实验结果表明，不同PACI配方的混凝效果因预聚物种类的不同而存在显著差异。这表明所有表面物种由相同的氢氧化铝固体组成的假设是不正确的，因此需要对PCNM进行一些修改。通过调用不同的最终氢氧化物沉淀，M-PCNM可以很好地用于预测与IPF-PACl的混凝的一般行为。
In this paper, a quantitative model of coagulation with inorganic polymer flocculants (IPFs) was investigated, using polyauminum chloride (PACl) as an example. Application of a modified precipitation charge-neutralization model (M-PCNM) was examined and discussed, including variation of dose, pH, and B value on the resulting coagulation diagram. The model was modified by using measured Al fractions as model inputs. The experimental results show that there exists a remarkable difference in coagulation with various PACI formulations in accordance with the different species being preformed. This indicates that the assumption of all the surface species consisting of the same aluminum hydroxide solids is not correct, and some modification of the PCNM is therefore needed. By invoking different final hydroxide precipitates, the M-PCNM can be used quite well to predict the general behavior of coagulation with IPF-PACl.