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作为超过膜预处理工艺的新型二/有色铁,用于净化含藻类的水

Xiaoxiang Cheng¹, Wenxin Song², Fengxun Tan²

¹School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, PR China; Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, PR China.

Environmental research

|November 8, 2023

概括

这项研究引入了一种新的低酸/有色铁预处理方法,用于打击超过过程中的藻类污染. 该过程通过降解有机物质和减少污染,显著提高了膜性能和水质.

科学领域:

环境科学环境科学
水处理技术水处理技术
膜科学膜科学膜科学

背景情况:

藻类污染是基于膜的水处理的主要挑战,限制了超过 (UF) 系统的效率.
有效的预处理方法对于缓解藻类污染和改善藻类载荷水中的UF性能至关重要.

研究的目的:

调查超过 (UF) 膜系统的新低化物 (Ca(ClO) 2) /有色铁 (Fe(II)) 预处理工艺的有效性.
系统地评估这种预处理对膜污染特性和水质参数的影响.

主要方法:

在UF.之前,对含藻类的水进行了A Ca ((ClO) 2/Fe ((II)) 化学预处理.
对终端特定流量,可逆电阻,无粘附能量和污染物去除的评估影响.
分析了水质参数的变化,包括OD685,度,溶解有机碳 (DOC),UV254吸收率和光有机物.
研究了产生的反应性物种和凝固在污染减轻中的作用.

主要成果:

显著增加终端特异性流量 (0.925-0.933) 和高度消除可逆电阻 (>96%).
戏剧性地延迟了蛋糕过的形成,减少了粘附自由能量,并分解了膜污染物.
对于OD685 (81.25-95.31%) 和度 (90.16-97.72%) 实现了高的去除比率.
观察到DOC (46.14%),UV254 (55.17%) 和光有机物 (75.77%) 的最大去除率.
通过改变泽塔电位和降解细胞外有机物 (EOM),Ca (ClO) 2 /Fe (II) 预处理诱导聚合.

结论:

(ClO) 2 / 铁 (II) 预处理有效地减轻了由藻类污染物引起的UF膜污染.
这一过程通过去除各种有机污染物,显著改善了水质.
凝固和反应性物种降解的联合作用是提高UF性能的关键.
(ClO) 2 / 铁 (II) 预处理对高效的藻类污染物去除和改善水处理中的UF能力有很大的希望.

关键词:

藻类衍生的膜污染物.低化物 (Ca(ClO) ((2)) 是一种细胞完整性细胞完整性铁体铁 (Fe (II)) 是一种有铁的铁.超过 (UF) 是一种超过方法.

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