气候变化领域集成服务门户(CCPortal): Membrane bioreactor and rapid sand filtration for the removal of microplastics in an urban wastewater treatment plant

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DOI	10.1016/j.marpolbul.2020.111211
	Membrane bioreactor and rapid sand filtration for the removal of microplastics in an urban wastewater treatment plant
	Bayo J.; López-Castellanos J.; Olmos S.
发表日期	2020
ISSN	0025326X
卷号	156
英文摘要	This paper discusses about the role of two different wastewater treatment technologies in the abatement of microplastics (MPs) from the final effluent of an urban wastewater treatment plant (WWTP); i.e., membrane bioreactor technology (MBR) and rapid sand filtration (RSF). For this purpose, a WWTP with these two technologies was monitored for 18 months. The average microplastic concentration was 4.40 ± 1.01 MP L−1 for the influent, 0.92 ± 0.21 MP L−1 for MBR, and 1.08 ± 0.28 MP L−1 for RSF, without statistically significant differences for MPs removal between both technologies (F-test = 0.195, p = 0.661). The main MP forms isolated in our study were fibers (1.34 ± 0.23 items L−1), followed by films (0.59 ± 0.24 items L−1), fragments (0.20 ± 0.09 items L−1), and beads (0.02 ± 0.01 items L−1). All of them probed to be statistically significant reduced after both technologies, but without statistically significant differences between them. The MP removal efficiency was 79.01% and 75.49% for MBR and RSF, respectively, although higher for microplastic particulate forms (MPPs), 98.83% and 95.53%, than for fibers, 57.65% and 53.83% for MBR and RSF, respectively, displaying a selective removal of particulate forms against microfibers. Fourteen different plastic polymers were identified in the influent, only persisting low-density polyethylene (LDPE), nylon (NYL), and polyvinyl (PV) in RSF effluent, and melamine (MUF) after MBR treatment. The MP size ranged from 210 μm, corresponding to NYL fragment form in the influent, to 6.3 mm, corresponding to a red microfiber also from the influent. The maximum MP average size significantly decreased from MBR (1.39 ± 0.15 mm), to RSF (1.15 ± 0.08 mm) and influent (1.05 ± 0.05 mm) (F-test = 4.014, p = 0.019), exhibiting the fiber selection carried out by these advanced technologies for wastewater treatment. © 2020 Elsevier Ltd
英文关键词	MBR; Microplastics; RSF; Wastewater treatment plant
语种	英语
scopus关键词	Bioreactors; Effluent treatment; Effluents; Membrane technology; Microfibers; Microfiltration; Microplastic; Nylon polymers; Reclamation; Sewage pumping plants; Water treatment plants; Advanced technology; Low density polyethylene(LDPE); Membrane bioreactor technology; Rapid sand filtration; Removal efficiencies; Statistically significant difference; Urban wastewater treatment plants; Wastewater treatment technologies; Wastewater treatment; acrylic acid; melamine; methacrylic acid; microplastic; nylon; polyester; polyethylene; polypropylene; polystyrene; polyvinyl derivative; plastic; bioreactor; concentration (composition); filtration; plastic waste; pollutant removal; sand; urban area; wastewater treatment plant; Article; controlled study; effluent; filtration; particle size; particulate matter; rapid sand filtration; waste component removal; waste water treatment plant; artificial membrane; bioreactor; filtration; sand; sewage; waste water; water pollutant; Bioreactors; Filtration; Membranes, Artificial; Microplastics; Plastics; Sand; Waste Disposal, Fluid; Waste Water; Water Pollutants, Chemical
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148942
作者单位	Department of Chemical and Environmental Engineering, Technical University of Cartagena, Paseo Alfonso XIII 44, Cartagena, E-30203, Spain
推荐引用方式 GB/T 7714	Bayo J.,López-Castellanos J.,Olmos S.. Membrane bioreactor and rapid sand filtration for the removal of microplastics in an urban wastewater treatment plant[J],2020,156.
APA	Bayo J.,López-Castellanos J.,&Olmos S..(2020).Membrane bioreactor and rapid sand filtration for the removal of microplastics in an urban wastewater treatment plant.Marine Pollution Bulletin,156.
MLA	Bayo J.,et al."Membrane bioreactor and rapid sand filtration for the removal of microplastics in an urban wastewater treatment plant".Marine Pollution Bulletin 156(2020).