Water Quality Monitoring and Wastewater Treatment Using the Constructed Wetland Concept at Bungva Lake, Kaysone Phomvihan City, Savannakhet Province, Lao PDR
Abstract
This study aimed to monitor physical, chemical, and biological water qualities to design a concept of a horizontal subsurface flow constructed wetland for wastewater treatment. The wetland is a small artificial wastewater treatment system consisting of one or more shallow treatment cells planted with wetland vegetation, which is usually suitable for warmer climates. The Standard Methods for the Examination of Water and Wastewater, 23rd Edition, published in 2017 by APHH, AWWA, and WEF, was used to analyze the ASPT index and water quality parameters. Temperature, pH, electrical conductivity, COD, BOD, and invertebrates were observed at three points at Bungva Lake Basin on March 16, 2021. Based on invertebrates (a water quality indicator), the three points had a water quality index value of 4.4, 3.8, and 3.6, respectively. It was also found that many human activities (agriculture, small industry, and settlement) and geological features control the lake’s water quality. Therefore, a horizontal subsurface flow constructed wetland is proposed as sufficient wastewater treatment for the lake
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References
APHA, AWWA, WEF (1998). Standard Methods for the Examination of Water and Wastewater. 20th ed. United Book Press. Baltimore.
Asian Institute of Technology, School of Environment, Resources and Development Bangkok Thailand, March 2007. Conclusion Report of Bungva Village in 2013–2019 and planned guide in 2019–2024.
Department of Meteorology and Hydrology (DMH), (2021). Rainfalls. (June, 2021)
Department of Natural Resources and Environment, (2021). Water Environmental standards. (June 18, 2021)
Gabriela, D et al. (2017). Volume seven Treatment Wetlands. Biological Wastewater Treatment Series,
J. Vymazal ENKI, o.p.s. and Institute of Systems Biology and Ecology, Czech Academy of Sciences, Dukelská 145, 379 01 Třeboň, Czech Republic.
Metcalf & Eddy Inc (2003). Wastewater Engineering: Treatment and Reuse. 4th Ed. McGraw-Hill. New York.
National Geographic Department, MRCs, MoNRE (2020).
Nilsson, E., Sha, L., Qian, W., Leedo, M., (2012). Constructed Wetlands Wastewater Treatment. VVA No. 1 Decentralized Water and Wastewater Treatment.
Pollution Control Department and the Environmental Engineering Association of Thailand, (2003). Volume 1 summarizes the recommended criteria for the design of a wastewater collection system and a community water quality improvement plant. p52-p53. (June 2021).
Powell, J., Homer, J., Glassmeyer, C., Sauer, N., (2009). Alternative wastewater treatment: on-site biotreatment wetlands at the Fernald Preserve Visitors Center. In: WM Conference, Phoenix, Arizona.
Test report, (2021). The Biodiversity and Characterization Physical-Chemical Affect to Development Buengwa reservoir, sustainable development environment, Savannakhet, Laos. 16 March 2021.
The Ministry of Natural Resources and the Environment with Technical Support from GMS Core Environment Programed, (2017). National Pollution Control Strategy and Action Plan 2018 – 2025 with Vision to 2030. (p 12), (p 89 – p 91).
Xing, A., (2012). Recent Developments in Wetland Technology for Wastewater Treatment. M.Sc Thesis. Applied Environmental Science, School of Business and Engineering, Halmstad University.
Zidan, A.A., El-Gamal, M.A., Rashed, A.A., Abd El-Hady, M.A., (2013). BOD treatment in HSSF constructed wetlands using different media (set-up stage). Mansoura Eng. J. 38 (3.)
Joan B. Gorme, Marla C. Maniquiz, Soyoung Lee & Lee-Hyung Kim (2012) Seasonal changes of plant biomass at a constructed wetland in a livestock watershed area, Desalination and Water Treatment, 45:1-3, 136-143, DOI: 10.1080/19443994.2012.692020.
