Analisis Dampak Pengolahan Sewage Treatment Plant (STP) dengan Metode Life Cycle Assessment pada Hunian Vertikal: Studi Kasus Apartemen X

Dethan, Andry Daniel (2026) Analisis Dampak Pengolahan Sewage Treatment Plant (STP) dengan Metode Life Cycle Assessment pada Hunian Vertikal: Studi Kasus Apartemen X. Masters thesis, UPN Veteran Jawa Timur.

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Abstract

ANALYSIS OF SEWAGE TREATMENT PLANT (STP) IMPACT USING LIFE CYCLE ASSESSMENT METHOD IN VERTICAL RESIDENTIAL BUILDINGS: CASE STUDY OF APARTMENT X Name : Andry Daniel Dethan NPM : 24065020001 Supervisor 1 : Dr. Silvana Dwi Nurherdiana, S.Si. Supervisor 2 : Dr. Awaluddin Hidayat Ramli Inaku, S.KM., M.KL. ABSTRACT This study aims to analyze greenhouse gas emissions generated from the operation of a Sewage Treatment Plant (STP) in vertical residential buildings using the Life Cycle Assessment (LCA) method. Besides treating domestic wastewater, STP operations also produce carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O) emissions that contribute to climate change. The research was conducted at Apartment X in Surabaya using operational data from 2023–2025 with a gate-to-gate system boundary and a functional unit of 1 m³ of treated domestic wastewater. The study stages included Life Cycle Inventory (LCI), greenhouse gas emission calculations based on the IPCC 2019 Refinement guidelines, and Life Cycle Impact Assessment (LCIA) using the 100-year Global Warming Potential (GWP) indicator. The results showed that total greenhouse gas emissions ranged from 42,296.1 to 43,862.0 kg CO₂-eq/year with GWP values of 1.08–1.29 kg CO₂-eq/m³. The largest contribution originated from electricity consumption in the aeration unit, accounting for more than 80% of the total GWP value. Methane emissions increased from 245.83 kg/year in 2023 to 303.32 kg/year in 2025, while N₂O emissions ranged from 0.0105 to 0.0438 kg/year. Sensitivity analysis indicated that the electricity emission factor and Methane Correction Factor (MCF) were the most influential parameters affecting total greenhouse gas emissions. This study demonstrates that the LCA method is effective for comprehensively evaluating the environmental impact of domestic wastewater treatment systems. Recommended mitigation strategies include aeration system optimization, energy efficiency improvement, biological process control, and the utilization of renewable energy to support sustainable and low-carbon vertical residential management. Keywords: Sewage Treatment Plant (STP), Life Cycle Assessment (LCA), Global Warming Potential (GWP), greenhouse gas emissions, vertical residential buildings.

Item Type: Thesis (Masters)
Contributors:
ContributionContributorsNIDN/NIDKEmail
Thesis advisorNurherdiana, Silvana DwiNIDN0001079303UNSPECIFIED
Thesis advisorInaku, Awaluddin Hidayat RamliNIDN0301089001UNSPECIFIED
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: Faculty of Engineering > Master Degree in Environmental Engineering
Depositing User: Andry Daniel Dethan
Date Deposited: 22 May 2026 08:25
Last Modified: 25 May 2026 02:09
URI: https://repository.upnjatim.ac.id/id/eprint/52229

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