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首页> 外文期刊>Journal of Residuals Science & Technology >Using Torque Rheology for the Identification of the Optimum Polymer Dose and the Best Performing Polymer
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Using Torque Rheology for the Identification of the Optimum Polymer Dose and the Best Performing Polymer

机译：使用扭矩流变学鉴定最佳聚合物剂量和性能最佳的聚合物

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摘要

Torque rheometers measure torque caused by the resistance of a material to the applied shear, and are commonly used in plastic, polymer and food industries for quality control and comparison of material characteristics. One of the advantages of using torque rheometers is that they provide higher accuracy and reproducibility since they use large sample volumes and eliminate the difficulty of taking small, uniform, representative sub-samples of conditioned sludges. This study presents a simple protocol to determine the optimum polymer dose and identify the best performing polymer for wastewater sludge using torque rheometry. The area under a torque-time rheograrn, also known as totalized torque, is closely related to sludge dewaterability (Ormeci and Abu-Orf, 2005 and Abu-Orf and Ormeci, 2005) and provides a unique tool to optimize sludge dewatering. The results of this study indicate that a local decrease is observed in the totalized torque values around the optimum polymer dose, which was determined by the capillary suction time and filtration tests. The presented method is quick, and can determine the optimum dose and compare the performance of several different polymers within a few hours using a small portable rheometer. Treatment plant operators can potentially use the protocol to compare the performance of polymers on-site and determine the one that best fits their sludge characteristics and dewatering needs. The protocol can also be used to pre-select the candidate polymers before a full-scale testing. More research is needed, however, to fine-tune the method and test it with a wide range of polymers and several types of sludges. Once fully developed, the method can save time and reduce operational costs by identifying the best polymer, optimizing the conditioner use, improving the solids capture and producing a more consistent cake.
机译：扭矩流变仪测量由材料对所施加的剪切力的抵抗力引起的扭矩，通常用于塑料，聚合物和食品行业，以进行质量控制和材料特性比较。使用扭矩流变仪的优点之一是，由于它们使用大量的样品，并提供了条件污泥的小而均匀的代表性子样品，因此它们提供了更高的准确性和可重复性。这项研究提出了一种简单的方案，可以使用扭矩流变仪确定最佳聚合物剂量并确定用于废水污泥的最佳性能聚合物。扭矩时间流变区下的面积（也称为总扭矩）与污泥的脱水能力密切相关（Ormeci和Abu-Orf，2005; Abu-Orf和Ormeci，2005），并提供了独特的工具来优化污泥的脱水。这项研究的结果表明，在最佳聚合物剂量附近，总扭矩值出现了局部下降，这是由毛细管抽吸时间和过滤测试确定的。提出的方法是快速的，并且可以使用小型便携式流变仪在几个小时内确定最佳剂量并比较几种不同聚合物的性能。处理厂的操作员可以潜在地使用该协议在现场比较聚合物的性能，并确定最适合其污泥特性和脱水需求的聚合物。该协议还可用于在全面测试之前预先选择候选聚合物。但是，需要进行更多的研究来对方法进行微调，并使用多种聚合物和几种污泥进行测试。一旦完全开发，该方法可以通过识别最佳聚合物，优化调节剂的使用，改善固体捕获率并产生更一致的滤饼来节省时间并降低运营成本。

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