Evaluation of microplastic removal efficiency of wastewater-treatment plants in a developing country, Vietnam

Le, Tuong; Truong, Tran-Nguyen-Sang; Nguyen, Phuoc‐Dan; Le, Quang-Do-Thanh; Tran, Quoc-Viet; Le, Thanh-Tho; Nguyen, Quoc‐Hung; Kieu-Le, Thuy-Chung; Strady, Emilie

doi:10.1016/j.eti.2022.102994

Cited by 23 publications

(5 citation statements)

References 46 publications

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“…For chemical parameters, removal efficiencies were calculated as reported in Equation (1) (Section 2.3) and were expressed as average values, and the variability of the data was reported as the 10th and 90th percentiles of the distribution of the data [38]. The Mann-Whitney U test was performed to understand the differences in removal efficiency of physico-chemical parameters (COD, BOD 5 , and TSS) according to weather conditions, i.e., dry or wet days.…”

Section: Parametersmentioning

confidence: 99%

Wastewater Treatment Plants Performance for Reuse: Evaluation of Bacterial and Viral Risks

Federigi,

Salvadori,

Lauretani

et al. 2024

Water

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Reusing reclaimed water is of paramount importance to achieve the 2030 Agenda for Sustainable Development Goals 6 and 13. In Europe, a recent Regulation set minimum requirements for water reuse in agriculture. However, some challenges remain considering microbial risks and their prevention. In this study, two urban wastewater treatment plants (WWTPs) were investigated from the perspective of reuse. A five-year investigation was performed on routine monitoring parameters collected under different weather conditions (wet/dry) and treatments (chlorination/non-chlorination) in inlet and outlet samples. Moreover, a three-month investigation focused on microbial parameters, including indicators, index pathogens (Human Adenovirus—HAdV, Salmonella spp.), and other viral pathogens (norovirus, enterovirus, and SARS-CoV-2). The long-term study revealed the compliance of both WWTPs for chemical parameters (organic substances and solids) in more than 90% of samples, whereas for Escherichia coli, the compliance ranged from 96.1% with chlorination under dry weather to 16.7% without chlorination in wet days. E. coli was positively associated with chemical oxygen demand (COD), which could be a promising and online measurable proxy of E. coli. The study on microbial performance demonstrated sound reliability in detecting E. coli as a suitable surrogate for Salmonella in chlorinated effluents, but neither bacterial nor viral indicators are able to represent HAdV. Although chlorination was able to remove most of the pathogens considered, the compliance with microbial indicators seems insufficient to represent viral water safety.

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Section: Parametersmentioning

confidence: 99%

Wastewater Treatment Plants Performance for Reuse: Evaluation of Bacterial and Viral Risks

Federigi,

Salvadori,

Lauretani

et al. 2024

Water

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“…In Vietnam, the density of microplastics in wastewater effluent was between 0.684 and 2.107 g/L [ 35 ]. In another study conducted in Vietnam, the effluent contained between 140 and 813 microplastic items per m 3 [ 36 ]. In Surabaya, Indonesia, treated water contained an average of 10.4 plastic particles/L [ 37 ].…”

Section: Microplastics From Wastewater Treatment Plants (Wwtps)mentioning

confidence: 99%

Microplastic Removal in Wastewater Treatment Plants (WWTPs) by Natural Coagulation: A Literature Review

Reza,

Mohamad Riza,

Sheikh Abdullah

et al. 2023

Toxics

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Urban industrialization has caused a ubiquity of microplastics in the environment. A large percentage of plastic waste originated from Southeast Asian countries. Microplastics arising from the primary sources of personal care items and industrial uses and the fragmentation of larger plastics have recently garnered attention due to their ubiquity. Due to the rising level of plastic waste in the environment, the bioaccumulation and biomagnification of plastics threaten aquatic and human life. Wastewater treatment plant (WWTP) effluents are one of the major sources of these plastic fragments. WWTPs in Southeast Asia contribute largely to microplastic pollution in the marine environment, and thus, further technological improvements are required to ensure the complete and efficient removal of microplastics. Coagulation is a significant process in removing microplastics, and natural coagulants are far superior to their chemical equivalents due to their non-toxicity and cost-effectiveness. A focused literature search was conducted on journal repository platforms, mainly ScienceDirect and Elsevier, and on scientific databases such as Google Scholar using the keywords Wastewater Treatment Plant, Coagulation, Microplastics, Marine Environment and Southeast Asia. The contents and results of numerous papers and research articles were reviewed, and the relevant papers were selected. The relevant findings and research data are summarized in this paper. The paper reviews (1) natural coagulants for microplastic removal and their effectiveness in removing microplastics and (2) the potential use of natural coagulants in Southeast Asian wastewater treatment plants as the abundance of natural materials readily available in the region makes it a feasible option for microplastic removal.

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“…WWTPs are required to meet stringent discharge standards to keep the quality of surface water within a safe and acceptable range. These standards primarily control aerobic organics (such as Chemical Oxygen Demand and Biochemical Oxygen Demand) and nutrients (N and P) [ 2 ]. At the same time, heavy metals are also an important evaluation index, particularly for industrial wastewater [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Unveiling the existence and ecological hazards of trace organic pollutants in wastewater treatment plant effluents across China

Liu,

Yang,

Cai

et al. 2024

Eco-Environment & Health

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Evaluation of microplastic removal efficiency of wastewater-treatment plants in a developing country, Vietnam

Cited by 23 publications

References 46 publications

Wastewater Treatment Plants Performance for Reuse: Evaluation of Bacterial and Viral Risks

Wastewater Treatment Plants Performance for Reuse: Evaluation of Bacterial and Viral Risks

Microplastic Removal in Wastewater Treatment Plants (WWTPs) by Natural Coagulation: A Literature Review

Unveiling the existence and ecological hazards of trace organic pollutants in wastewater treatment plant effluents across China

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