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首页> 外文期刊>Desalination and water treatment >Study of the chitosan performance in conjunction with polyaluminum chloride in removing turbidity from Ahvaz water treatment plant
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Study of the chitosan performance in conjunction with polyaluminum chloride in removing turbidity from Ahvaz water treatment plant

机译：壳聚糖与聚氯化铝联合用于去除阿瓦士水处理厂混浊的性能研究

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摘要

Chitosan is a biodegradable cationic polymer derived from the deacetylation of chitin. This study aims to investigate the effects of chitosan as a coagulant aid for the improvement of a polyaluminum chloride coagulant in removing the turbidity from drinking water. This study was conducted in the laboratory using a jar test in the water treatment plant of Ahvaz, Iran. Experiments were conducted based on various variables such as concentration of coagulant, pH, and different concentrations of chitosan as a coagulant aid. After preparation in a jar test, samples were mixed fast at 120rpm for 1min and slowly at 40rpm for 20min and remained under stable conditions for 30min to allow for settlement. The optimal pH for the removal of the turbidity was pH 8. The optimal dosage of polyaluminum chloride combined with chitosan was 5 and 0.02mg/L, respectively. Under optimal conditions, the use of chitosan could reduce the concentration of polyaluminum chloride by approximately 50%. In addition, particles formed in flocculation by chitosan were coarser and settled faster. Results indicated good performance of chitosan as a coagulant aid for the removal of the turbidity from drinking water.
机译：壳聚糖是衍生自几丁质脱乙酰基的可生物降解的阳离子聚合物。本研究旨在研究壳聚糖作为助凝剂对改善聚氯化铝凝结剂从饮用水中去除浊度的作用。这项研究是在实验室使用伊朗阿瓦士水处理厂的广口瓶试验进行的。基于各种变量（例如凝结剂浓度，pH和不同浓度的壳聚糖作为助凝剂）进行了实验。在广口瓶测试中制备后，将样品以120rpm的速度快速混合1min，然后以40rpm的速度缓慢混合20min，并在稳定的条件下保持30min，以便沉降。去除混浊的最佳pH值为8。聚氯化铝与壳聚糖结合的最佳剂量分别为5和0.02mg / L。在最佳条件下，使用壳聚糖可使聚氯化铝的浓度降低约50％。另外，壳聚糖絮凝形成的颗粒较粗且沉降更快。结果表明，壳聚糖具有良好的凝结助剂性能，可从饮用水中去除浊度。

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