Environmental impact assessment of a domestic wastewater treatment plant in Bangkok, Thailand

Name: Sakti, Ardhy Yuliawan Norma

keyword: Wastewater treatment plant

; Environmental impact

; Energy Impact assessment

Abstract: The Wastewater Treatment Plant in Thailand plays a crucial role in treating raw domestic wastewater. The wastewater treatment plant can also be integrated with the water reclamation system for sustainable reuse. This system integration promotes the circular economy principle and has already been implemented at the Bang Sue wastewater treatment plant. As the demand for treatment continues to increase, the energy requirements associated with these processes become increasingly significant. This study focuses on calculating environmental impacts, transportation, direct air emissions, water pollution, energy, and chemical consumption during the operation phase. In this research, the impact assessment is carried out using ReciPe 2016. The results of the study will be beneficial for government stakeholders in making a decision. To narrow the scope of the research, we specifically analyze the gate-to-gate aspects. The input output inventory data was examined through midpoint and endpoint impact assessments using Open LCA software. This study compared the environmental impact of two scenarios: current practices (Scenario 1) and a projection for 2037 (Scenario 2). The results show a positive environmental shift in Scenario 2. The impact on ecosystem quality decreased from 1.21×10-9 species-years to 1×10-9 species-years. Similarly, the impact on human health improved with a reduction in disability-adjusted life years (DALYs) from 5.77×10-7 to 4.18×10-7. There was a slight decrease in the impact on natural resources, with the cost dropping from $0.01697 (USD 2013) to $0.01692 (USD 2013). This study recommends implementing energy conservation and prioritizing the transition from lignite to renewable energy. A 5% reduction in energy consumption can lead to significant improvements across various environmental metrics, including a 4.74% reduction in impact on total ecosystem quality, a 4.65% reduction in impact on total human health, and a 4.79% reduction in impact on total natural resources.

Thammasat University. Thammasat University Library

Address: BANGKOK

Email: preserv@tu.ac.th

Name: Babel, Sandhya

Role: advisor

Name: Kritapas Laohhasurayotin

Role: co-advisor

Created: 2024

Modified: 2024-11-26

Issued: 2024-11-26

วิทยานิพนธ์/Thesis

application/pdf

DOI: 10.14457/TU.the.2023.548

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Engineering and Technology

Grantor: Thammasat University

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