超滤工艺对橄榄厂预处理废水的除污效果研究。

IF 3.3 4区工程技术 Q2 CHEMISTRY, PHYSICAL

Membranes Pub Date : 2025-02-20 DOI:10.3390/membranes15030067

Mohammed Zine, Noureddine Touach, El Mostapha Lotfi, Philippe Moulin

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引用次数: 0

摘要

采用膜过滤系统对人工湿地预处理橄榄厂废水进行了净化实验研究。采用end -end filtration （DEF）筛选合适的MF/UF膜，并选择合适的分子量截止值，以实现最佳的OMW处理。DEF对COD（化学需氧量）和TOC（总有机碳）的去除率最高，分别为88.14%和11.17%。同时，对颗粒活性炭吸附原液和预处理液的效果进行了对比研究。采用商用超滤（UF）陶瓷膜（150和50 kDa）在横流过滤（CFF）模式下进行了半工业规模的实验，渗透通量约为200 L h-1 m-2，跨膜压力（TMP）为3.5-3.8 bar。该后处理对预处理后的有机废水的COD去除率影响显著，达到78.5%。本研究提出的耦合工艺对COD、TOC和浊度的去除率分别为97%、97%和99.9%。

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Efficiency of an Ultrafiltration Process for the Depollution of Pretreated Olive Mill Wastewater.

The depollution of constructed wetland-pretreated olive mill wastewater (OMW) using a membrane filtration system was experimentally studied. Dead-end filtration (DEF) was employed to evaluate suitable MF/UF membranes and select the appropriate molecular weight cut-off for optimal OMW treatment. Removal efficiencies for COD (chemical oxygen demand) and TOC (total organic carbon) using DEF reached maximum values of 88.14% and 11.17%, respectively. Adsorption of raw and pretreated OMW on granular activated carbon was also carried out for a comparative study against DEF and pretreatment. The semi-industrial-scale experiments were conducted using commercial ceramic ultrafiltration (UF) membranes (150 and 50 kDa) in cross-flow filtration (CFF) mode at a permeate flux around 200 L h^-1 m^-2 and a trans-membrane pressure (TMP) of 3.5-3.8 bars. This post-treatment had a significant impact on COD removal efficiency from pretreated OMW, reaching 78.5%. The coupled process proposed in this study achieved removal efficiencies of 97%, 97%, and 99.9% of COD, TOC, and turbidity, respectively.

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来源期刊

Membranes Chemical Engineering-Filtration and Separation

CiteScore

6.10

自引率

16.70%

发文量

1071

审稿时长

11 weeks

期刊介绍： Membranes (ISSN 2077-0375) is an international, peer-reviewed open access journal of separation science and technology. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided.