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污泥停留时间对厌氧膜生物反应器（AnMBR）处理富含脂质的乳制品废水时膜污染的影响。

Influence of the Sludge Retention Time on Membrane Fouling in an Anaerobic Membrane Bioreactor (AnMBR) Treating Lipid-Rich Dairy Wastewater.

作者信息

Szabo-Corbacho Maria Alejandra, Pacheco-Ruiz Santiago, Míguez Diana, Hooijmans Christine M, Brdjanovic Damir, García Hector A, van Lier Jules B

机构信息

Water Supply, Sanitation and Environmental Engineering Department, IHE Delft Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands.

Latitud-Fundación LATU, Laboratorio Tecnológico del Uruguay (LATU), Avda. Italia 6201, Montevideo CP 11500, Uruguay.

出版信息

Membranes (Basel). 2022 Feb 25;12(3):262. doi: 10.3390/membranes12030262.

DOI:10.3390/membranes12030262
PMID:35323737
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8952882/
Abstract

This study evaluated the effects of sludge retention time (SRT) on the membrane filtration performance of an anaerobic membrane bioreactor (AnMBR) fed lipid-rich synthetic dairy wastewater. The membrane filtration performance was evaluated in two AnMBR systems operated at two different SRTs, i.e., 20 and 40 days. For the AnMBR operated at 40 days, SRT exhibited worse membrane filtration performance characterized by operational transmembrane pressures (TMP) exceeding the maximum allowed value and high total resistances to filtration (R). The sludge in the two reactors evaluated at the different SRTs showed similar sludge filterability properties. However, the sludge in the reactor operated at 40 days SRT was characterized by exhibiting the highest concentrations of: (i) total suspended solids (TSS), (ii) small-sized particles, (iii) extracellular polymeric substances (EPS), (iv) soluble microbial products (SMP), (v) fats, oils and grease (FOG), and (vi) long-chain fatty acids (LCFA). The cake layer resistance was the major contributor to the overall resistance to filtration. The high TSS concentration observed in the AnMBR systems apparently contributed to a less permeable cake layer introducing a negative effect on the membrane filtration performance.

摘要

本研究评估了污泥停留时间（SRT）对以富含脂质的合成乳品废水为进水的厌氧膜生物反应器（AnMBR）膜过滤性能的影响。在两个以不同污泥停留时间（即20天和40天）运行的AnMBR系统中评估了膜过滤性能。对于在40天运行的AnMBR，污泥停留时间表现出较差的膜过滤性能，其特征在于运行跨膜压力（TMP）超过最大允许值且总过滤阻力（R）较高。在不同污泥停留时间下评估的两个反应器中的污泥显示出相似的污泥过滤性能。然而，在40天污泥停留时间运行的反应器中的污泥具有以下特征：（i）总悬浮固体（TSS）浓度最高，（ii）小尺寸颗粒，（iii）胞外聚合物（EPS），（iv）可溶性微生物产物（SMP），（v）脂肪、油和油脂（FOG），以及（vi）长链脂肪酸（LCFA）。滤饼层阻力是总过滤阻力的主要贡献因素。在AnMBR系统中观察到的高TSS浓度显然导致滤饼层渗透性降低，对膜过滤性能产生负面影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/9a4bd76262fc/membranes-12-00262-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/8a55336a02db/membranes-12-00262-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/c6e6c2554740/membranes-12-00262-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/37f77060a753/membranes-12-00262-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/f3447184bc7f/membranes-12-00262-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/a957041ce0ff/membranes-12-00262-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/9a4bd76262fc/membranes-12-00262-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/8a55336a02db/membranes-12-00262-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/c6e6c2554740/membranes-12-00262-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/37f77060a753/membranes-12-00262-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/f3447184bc7f/membranes-12-00262-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/a957041ce0ff/membranes-12-00262-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/518d/8952882/9a4bd76262fc/membranes-12-00262-g006.jpg

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