DOI: 10.1016/j.watres.2019.02.028
Scopus记录号: 2-s2.0-85062388263
论文题名: Microplastic abundance, characteristics, and removal in wastewater treatment plants in a coastal city of China
作者: Long Z. ; Pan Z. ; Wang W. ; Ren J. ; Yu X. ; Lin L. ; Lin H. ; Chen H. ; Jin X.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 155 起始页码: 255
结束页码: 265
语种: 英语
英文关键词: Abundance
; Characteristics
; Microplastic
; Removal
; Wastewater treatment plant
英文摘要: Studying the abundance, characteristics, and removal of microplastics (MPs) in wastewater treatment plants (WWTPs) in coastal cities is of great significance for understanding the impacts of human activities on the marine environment, but currently, little information on this topic is available in China. Therefore, the abundance, characteristics, and removal of MPs in seven WWTPs of Xiamen, a typical coastal city in China, are studied. Sixty samples were collected using an improved sampling method involving an electromagnetic flowmeter and a fast digital camera. The influent MPs concentration is 1.57–13.69 items/L, and it is reduced to 0.20–1.73 items/L in the effluent, indicating that 79.3–97.8% MPs is removed. Based on the daily effluent discharge and MPs removal rate, it is estimated that ∼6.5 × 10 8 MPs are released from the seven WWTPs into the Xiamen Bay each day. The light microscopic and micro-Raman spectroscopic analysis indicates that ∼62.68% of particles are plastic polymers, including polypropylene (31.6%), polyethylene (21.9%), polystyrene (10.1%), propylene/ethylene copolymer (9.2%), and polyethylene terephthalate (7.5%). The color of MPs is mainly composed of white (27.3%) and clears (25.8%). Our results show that granules (41.1%) are the dominant shape of MPs, followed by fragments (31.3%), fibers (23.7%), and pellet (3.9%). The characteristics of MPs such as sizes, shapes, and types affect the MPs removal in WWTPs. Our findings show that MPs concentration in the influent is positively correlated with the suspended solids (SS), however, in the effluent, it is associated with the WWTPs operating load, as reflected by obviously higher MP abundance in overloaded ones. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121907
Appears in Collections: 气候变化事实与影响
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作者单位: College of Marine Science and Technology, China University of Geosciences (Wuhan), Lumo Road 388, Wuhan, 430074, China; Third Institute of Oceanography, Ministry of Natural Resources, Daxue Road 178, Xiamen, 361005, China; Second Institute of Oceanography, Ministry of Natural Resources, Baochubei Road 36, Hangzhou, 310012, China
Recommended Citation:
Long Z.,Pan Z.,Wang W.,et al. Microplastic abundance, characteristics, and removal in wastewater treatment plants in a coastal city of China[J]. Water Research,2019-01-01,155