07/02/2023 4:00 PM GMT+7 TP HCM
Environmental Technology & Innovation 29 (2023) 102994
Authors: Thi-Minh-Tam Le a,b, Tran-Nguyen-Sang Truong a,b, Phuoc-Dan Nguyen a,b,c,∗, Quang-Do-Thanh Le a,b, Quoc-Viet Tran a,b, Thanh-Tho Le d, Quoc-Hung Nguyen d, Thuy-Chung Kieu-Le b,e, Emilie Strady a,f,∗∗
a CARE, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam b Vietnam National University Ho Chi Minh City, Viet Nam c Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), Viet Nam d CASE Center of Analytical Services and Experimentation, Ho Chi Minh City, Viet Nam e Faculty of Geology and Petroleum Engineering, Ho Chi Minh City University of Technology (HCMUT), Viet Nam f Aix-Marseille Univ., Universit. de Toulon, CNRS, IRD, MIO, Marseille, France
Accepted 21 December 2022
Available online 2 January 2023
Abstract. Wastewater-treatment plants (WWTPs) are considered significant point sources of microplastics (MiP) in the receiving waters; MiP release is poorly estimated in developing countries. MiP abundance, recovery efficiency and daily load to receiving waters were explored in treatment stage facilities of four WWTPs in Vietnam, located in Ho Chi Minh City, Thu Dau Mot, and Da Lat. MiP abundance varied from 1860 items m⁻³ to 125,000 items m−3 in influents and between 140 items m⁻³ and 813 items m⁻³ in the final effluents.
The MiP-removal efficiency was the highest in the Da Lat wastewater-treatment plant (DL WWTP), a tertiary treatment plant using trickling filters followed by aerated lagoon and maturation ponds for BOD and nitrogen removals. The lowest MiP-removal efficiency was observed in Binh Hung wastewater-treatment plant (BH WWTP), a combined sewer system using conventional activated sludge processes as secondary treatment.
The total daily MiP load to the receiving environment varied from 1,840,000 items d⁻¹ at the DL WWTP to 77,127,000 items d⁻¹ at the BH WWTP. Change in MiP abundance, morphology, and removal efficiency were discussed after each stage of the treatment process for the four WWTPs.
On 22/10/2015, CARE has organized the meeting of the Scientific Council with the chairmanship of Dr. Nicolas Gratiot - Director and Chairman of the Scientific Council, Assoc. Pro. Vo Le Phu (on behalf of Assoc. Pro. Nguyen Phuoc Dan - Deputy Chairman)
Project description The availability of High Resolution Imagery (spatial, spectral, and radiometric) with an increased time revisit (Landsat-8 and now Sentinel-2) opens the way to a more detailed observation of coastal zones and inland waters (large rivers, lakes and reservoirs)
The pretty work, a monography collection of 15 megacities in the world about "Water, megacities and Global Change”, has been published by UNESCO. The CARE Lab-HCMUT Researchers are honored to represent Ho Chi Minh City by contributing an article
CARE Lab-HCMUT is pleased to present you our publication of the monography "Ho Chi Minh City growing with water-related challenges".
CARE Lab-HCMUT and PADDI, a member of the Ho Chi Minh City delegation, participated in the 26th Environment exhibition POLLUTEC, Lyon (France), which took place from 30/11 to 02/12/2016.