| 聚合氯化铁-聚(环氧氯丙烷-二甲胺)复合絮凝剂在模拟水处理中的混凝特性研究 |
| 摘要点击 1596 全文点击 1168 投稿时间：2012-12-12 修订日期：2013-03-26 |
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| 中文关键词 复合絮凝剂 混凝效果 模拟水 有机组分质量分数 黏度 碱化度 |
| 英文关键词 composite flocculant coagulation performance simulated water organic component mass fraction viscosity basicity |
| 作者 | 单位 | E-mail | | 刘新新 | 山东大学环境科学与工程学院, 山东省水污染控制与资源化重点实验室, 济南 250100 | | | 杨忠莲 | 山东大学环境科学与工程学院, 山东省水污染控制与资源化重点实验室, 济南 250100 | | | 高宝玉 | 山东大学环境科学与工程学院, 山东省水污染控制与资源化重点实验室, 济南 250100 | baoyugao_sdu@yahoo.com.cn | | 王燕 | 山东大学环境科学与工程学院, 山东省水污染控制与资源化重点实验室, 济南 250100 | | | 岳钦艳 | 山东大学环境科学与工程学院, 山东省水污染控制与资源化重点实验室, 济南 250100 | | | 李倩 | 山东大学环境科学与工程学院, 山东省水污染控制与资源化重点实验室, 济南 250100 | |
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| 中文摘要 |
| 制备出一系列具有不同聚合氯化铁(PFC)的碱化度(B)、不同聚(环氧氯丙烷-二甲胺)[P(EPI-DMA)]质量分数[ω(E)]和黏度(η)的PFC-P(EPI-DMA)复合混凝剂,并将其用于模拟染料废水和模拟天然地表水的絮凝脱色处理,对比探讨了ω(E)、η和B对PFC-P(EPI-DMA)中铁的形态分布及其混凝效果的影响,以及混凝作用机制. 结果表明,复合絮凝剂中铁的有效形态含量随ω(E)的增大而不断降低; η=850 mPa ·s时,复合混凝剂中铁的有效形态含量最高; 随B值的增大,Feb含量先增大后减少,而Fec含量逐渐增大. 一定程度上使用预水解程度较低、有机成分黏度较大的PFC-P(EPI-DMA)有利于混凝效果的提高,复合混凝剂中有机成分质量分数对混凝效果的影响则与处理对象有关. 在模拟水处理中,复合混凝剂依靠电性中和及架桥吸附能力发挥混凝特性. |
| 英文摘要 |
| Polyferric chloride (PFC) and poly(epichlorohydrin-dimethylamine) [P(EPI-DMA)] were applied as raw materials to prepare a novel inorganic-organic flocculant [PFC-P(EPI-DMA)] with various intrinsic viscosities (η), basicity (B, OH/Fe molar ratio), and organic component fractions [ω(E)]. The PFC-P(EPI-DMA) prepared was then evaluated for the coagulation treatment of synthetic active dying wastewater and simulated ground water. Effects of B, η and ω(E) on the Fe speciation distribution and coagulation performance of PFC-P(EPI-DMA) were comparatively examined as a function of coagulant dosage. The coagulation mechanism of PFC-P(EPI-DMA) was also discussed in this paper. Experimental results indicated the interaction effect of PFC and P(EPI-DMA) component in composite PFC-P(EPI-DMA). The effective Fe speciation content of PFC-EPI-DMA decreased with increasing ω(E), while it was maximized when η=850 mPa ·s. As B value increased gradually, the Feb concentration initially increased and then decreased, but the Fec concentration kept continuously increasing. To some extent, higher η and lower B value was favorable for the improvement of coagulation performance for coagulation treatment of both synthetic dyeing wastewater and simulated ground water. The ω(E) influence on the coagulation performance of PFC-P(EPI-DMA) was related to the treatment target. Both charge neutralization and adsorption bridging effect played roles in the coagulation process of the composite PFC-P(EPI-DMA). |
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