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Abundance, morphology, and removal efficiency of microplastics in two wastewater treatment plants in Nanjing, China

Environmental science and pollution research international, 2021-02, Vol.28 (8), p.9327-9337 [Peer Reviewed Journal]

Springer-Verlag GmbH Germany, part of Springer Nature 2020 ;Springer-Verlag GmbH Germany, part of Springer Nature 2020. ;ISSN: 0944-1344 ;EISSN: 1614-7499 ;DOI: 10.1007/s11356-020-11411-w ;PMID: 33141384

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Title:
Abundance, morphology, and removal efficiency of microplastics in two wastewater treatment plants in Nanjing, China
Author: Yuan, Fang ; Zhao, Han ; Sun, Haibing ; Zhao, Jinhui ; Sun, Yongjun
Subjects: Abundance ; Aquatic environment ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Chemical composition ; China ; Cities ; Domestic wastewater ; Drainage systems ; Earth and Environmental Science ; Ecotoxicology ; Efficiency ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental Monitoring ; Flocculation ; Industrial wastes ; Industrial wastewater ; Infrared analysis ; Microplastics ; Morphology ; Municipal wastewater ; Optical microscopes ; Plastic debris ; Plastic pollution ; Plastics ; Polyethylene ; Polyethylenes ; Polypropylene ; Research Article ; River basins ; Sewage ; Sewage disposal ; Spectroscopy, Fourier Transform Infrared ; Technology ; Tertiary treatment ; Waste Disposal, Fluid ; Waste Water - analysis ; Waste Water Technology ; Wastewater facilities ; Wastewater treatment ; Wastewater treatment plants ; Water Management ; Water Pollutants, Chemical - analysis ; Water Pollution Control ; Water Purification ; Water treatment
Is Part Of: Environmental science and pollution research international, 2021-02, Vol.28 (8), p.9327-9337
Description: Municipal wastewater treatment plants (WWTPs) are considered to be major contributors of microplastics to the aquatic environment. Detailed research in China, which is relevant to the local situation, remains in the initial stage. Herein, the microplastic abundance, morphology, and removal efficiency of two WWTPs (C and P) equipped with tertiary treatment processes in different districts of Nanjing, an important city in the Yangtze River Basin, were investigated. The influence of technology, operational parameters, daily capacity, and sewage source and its proportion were discussed. Observations by optical microscope and FT-IR analysis and systematic calculation revealed that the microplastics have four shapes, including fragments, granules, film, and fibers, with various sizes and proportions, which were dependent on wastewater source. The total removal rates of 97.67% and 98.46% for WWTP C and WWTP P, respectively, indicated their highly efficient reduction of microplastics. Treatment technology had a considerable influence on the removal rate, especially the secondary and tertiary processes. However, a large number of microplastics from WWTPs were still released into the environmental waters due to the huge daily capacity. Sewage source determined the concentration, morphology feature, and chemical composition of microplastics to a certain extent. Compared with industrial wastewater, domestic wastewater possibly contained smaller microplastics of polyethylene and polypropylene with lower abundance. Furthermore, additional attention was provided on the flocculation process, drainage system, and treatment efficiency of microplastics with different shapes. This work is expected to provide some technical supports to guide the operation and management of WWTPs.
Publisher: Berlin/Heidelberg: Springer Berlin Heidelberg
Language: English
Identifier: ISSN: 0944-1344
EISSN: 1614-7499
DOI: 10.1007/s11356-020-11411-w
PMID: 33141384
Source: MEDLINE
ProQuest Central

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Abundance, morphology, and removal efficiency of microplastics in two wastewater treatment plants in Nanjing, China

Springer-Verlag GmbH Germany, part of Springer Nature 2020 ;Springer-Verlag GmbH Germany, part of Springer Nature 2020. ;ISSN: 0944-1344 ;EISSN: 1614-7499 ;DOI: 10.1007/s11356-020-11411-w ;PMID: 33141384

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