摩洛哥Khenifra市Oum Errabia河水污染反渗透膜的特性研究

IF 2.4 Q3 CHEMISTRY, MULTIDISCIPLINARY Moroccan Journal of Chemistry Pub Date : 2021-02-18 DOI:10.48317/IMIST.PRSM/MORJCHEM-V9I1.25140
M. Ennouhi, S. E. Aggadi, L. Hasnaoui, M. Azzouzi, A. Hourch
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引用次数: 1

摘要

Khenifra海水淡化厂的设计目标是到2030年每天生产36290立方米的饮用水。自2013年该装置启动以来,由于膜污染,反渗透装置遇到了几个问题。堵塞是与给水质量和预处理过程之间的相互作用有关的一个主要问题。进行了薄膜尸检、原水季节变化监测和操作参数监测。结果表明,2017年,使用微滤技术,进水在温度(10-25°C)、电导率(1395-2500µS.cm-1)和淤泥密度指数(SDI)(<3)方面存在较大的季节性变化,这会影响膜的结垢。通过扫描电子显微镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对膜进行解剖,发现膜表面形成了较大的裂纹,污垢层主要由CaCO3(38.70%)、Al2O3(17.42%)、Ba(SO4)2(15.23%)、MgCl2(15.02%)和SiO2(13.64%)组成。
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Characterization of the reverse osmosis membrane fouled by Oum Errabia river water of Khenifra city, Morocco
The Khenifra desalination plant is designed to produce 36,290 m 3 /d of drinking water by 2030. Since the start-up of this plant in 2013, several problems have been encountered in the reverse osmosis unit due to membrane fouling. Clogging is a major issue related to the interaction between feed water quality and the pre-treatment process. Membrane autopsy, monitoring of seasonal variations in raw water and surveillance of operating parameters are carried out. The results obtained show that feed water is subject to large seasonal variations in terms of temperature (10 - 25 °C), conductivity (1395 - 2500 µS.cm -1 ) and Silt Density Index (SDI) (< 3) in 2017 using microfiltration, which influences the fouling of the membrane. Membrane autopsy by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray Diffraction (XRD), shows the formation of large cracks on the surface of the membrane and that the fouling layer is mainly composed of: CaCO 3 (38.70 %), Al 2 O 3 (17.42 %), Ba(SO 4 ) 2 (15.23 %), MgCl 2 (15.02 %) and SiO 2 (13.64%).
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来源期刊
Moroccan Journal of Chemistry
Moroccan Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
3.40
自引率
9.10%
发文量
0
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