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氢氧化镁混凝性能及絮体特性

Keywords: 氢氧化镁,混凝,絮体,破碎

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Abstract:

以氢氧化镁作为混凝剂,不同浊度高岭土水样为研究对象,运用iPDA在线监测技术对混凝过程絮体形成进行监测,探求了操作条件对絮体特性和混凝过程的影响;同时讨论了FI值和浊度去除的关系。结果表明,当浊度分别为5、10和20NTU时,最佳投加量分别为21.6、14.4和3.6mg/L;随着pH的升高,FI指数增大,同时混凝剂的最佳投加量也逐步减小;随着慢速搅拌转速的增大,絮体破碎过程明显,FI指数降低;当转速为60r/min时,浊度去除率最高。

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