...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemical engineering journal >Preparation and performance of a high purity poly-aluminum chloride
【24h】

Preparation and performance of a high purity poly-aluminum chloride

机译：高纯聚氯化铝的制备及性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high-purity PACl are needed. This paper presents a novel method to prepare high-purity PACl which contains high aluminum oxide content (>10%), high basicity (>90%), and low insoluble substance (<0.04%), iron (<300 mg L~(-1)) and heavy metals. Samples taken from the Huangpu River were used to evaluate the coagulation performance of high-purity PACl in comparison with conventional PACl. The results demonstrate that for the whole dose range studied, high-purity PACls removed more turbidity than conventional PACl. On the other hand, when the dose was greater than 4mgL~(-1) as Al, the high-purity PACl showed great UV_(254)-absorbance removal capacity; which was even much greater at high does (e.g., 10 mg L~(-1)). This could be partly attributed to the charge effect where a relative high zeta potential in the test water was achieved by dosing high-purity PACl.
机译：聚氯化铝（PACl）是用于水和废水处理的常用混凝剂之一。实施了新的PACl中国国家标准，严格控制不溶物，铁和重金属的浓度，然后需要研究高纯度PACl的制备。本文提出了一种新的制备高纯度PACl的方法，该方法包含高氧化铝含量（> 10％），高碱度（> 90％）和低不溶物（<0.04％），铁（<300 mg L〜（ -1））和重金属。与常规的PACl相比，使用从黄浦江采集的样品评估高纯度PACl的混凝性能。结果表明，在所研究的整个剂量范围内，高纯度的PACls去除的浊度均高于常规PACl。另一方面，当剂量大于4mgL〜（-1）作为Al时，高纯度的PACl具有很强的UV_（254）吸收能力。在高剂量情况下甚至更高（例如10 mg L〜（-1））。这可能部分归因于电荷效应，其中通过加入高纯度的PACl达到了测试水中相对较高的Zeta电位。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号