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自洁式三级串联的水样在线过滤系统的研制和应用

Keywords: 在线过滤,浊度,营养盐

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Abstract:

基于玻璃纤维对小颗粒物的截留和微孔过滤,以及超声波辅助清洗等方法原理,设计和制作了带反冲洗自洁功能的三级串联在线过滤系统,将滤网(初级)、超声波作用下装填有玻璃纤维的过滤器(二级)、微孔滤管(三级)串联,对较高浊度的环境水样进行在线过滤。评估了模拟水样和实际水样中浊度的去除效果,证明该系统对水样中颗粒物有很好的去除并大幅降低水样浊度。在优化的条件下,原始浊度范围在4~100NTU的水样经过滤后,浊度均能降至1NTU以下。以标准方法测定的典型水质指标(活性磷、铵氮、亚硝酸盐氮和硝酸盐氮)的浓度为基准,计算水样经所设计的过滤系统处理后,这4种营养盐的回收率一般在85%~130%之间,说明本系统的使用基本不影响目标物的测定。

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