Monitoring Sebaran Residu Air Lindi Di Area Bekas TPA Keputih Dengan Metode Geofisika Self-Potential

Silaban, Sari Minarta (2026) Monitoring Sebaran Residu Air Lindi Di Area Bekas TPA Keputih Dengan Metode Geofisika Self-Potential. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kawasan bekas TPA Keputih Sukolilo, Surabaya yang telah ditutup sejak tahun 2001 dan direhabilitasi menjadi ruang terbuka hijau masih berpotensi menyimpan residu air lindi di bawah permukaan. Penelitian ini bertujuan mengidentifikasi distribusi nilai Self-Potential (SP), pola sebaran residu air lindi, serta karakteristik anomalinya. Pengukuran dilakukan menggunakan konfigurasi Fixed-Base pada enam lintasan dengan total 276 titik pengamatan. Data diolah melalui koreksi, pemfilteran menggunakan Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN), pemetaan isopotensial, dan inversi Flower Pollination Algorithm (FPA). Hasil interpretasi divalidasi menggunakan parameter Electrical Conductivity (EC), pH, konsentrasi besi (Fe), serta data sekunder BOD₅, COD, dan TSS. Hasil penelitian menunjukkan bahwa nilai Self-Potential berkisar antara −3,10 mV hingga 18,13 mV. Sebaran residu air lindi cenderung terlokalisasi pada kawasan Taman Harmoni dengan sumber anomali berada pada kedalaman sekitar 8–17 m. Hasil validasi menunjukkan kandungan Fe pada dua sumur warga melebihi baku mutu, yaitu 2,79 mg/L dan 1,80 mg/L, sehingga mendukung hasil interpretasi Self-Potential. Penelitian ini menunjukkan bahwa metode Self-Potential yang dipadukan dengan CEEMDAN dan inversi FPA mampu mengidentifikasi distribusi residu air lindi pada kawasan bekas TPA Keputih yang telah direhabilitasi secara efektif dan non-destruktif.
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The former Keputih Landfill in Sukolilo, Surabaya, which has been closed since 2001 and rehabilitated into a public green space, still has the potential to contain residual leachate beneath the surface. This study aims to identify the distribution of Self-Potential (SP) values, the distribution pattern of residual leachate, and the characteristics of its anomalies. Measurements were carried out using the Fixed-Base configuration along six survey lines with a total of 276 observation points. The data were processed through data correction, filtering using Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN), isopotential mapping, and inversion using the Flower Pollination Algorithm (FPA). The interpretation results were validated using Electrical Conductivity (EC), pH, iron (Fe) concentration, as well as secondary data on BOD₅, COD, and TSS. The results showed that the Self-Potential values ranged from −3.10 mV to 18.13 mV. The distribution of residual leachate tended to be localized in the Taman Harmoni area, with anomaly sources located at depths of approximately 8–17 m. The validation results showed that the Fe concentrations in two residential wells exceeded the water quality standard, reaching 2.79 mg/L and 1.80 mg/L, thereby supporting the Self-Potential interpretation results. This study shows that the Self-Potential method combined with CEEMDAN and Flower Pollination Algorithm (FPA) inversion is capable of identifying the distribution of residual leachate in the rehabilitated former Keputih Landfill effectively and non-destructively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Self-Potential, leachate, former Keputih Landfill, CEEMDAN, Flower Pollination Algorithm, groundwater quality,Self-Potential, air lindi, bekas TPA Keputih, CEEMDAN, Flower Pollination Algorithm, kualitas air tanah.
Subjects:	Q Science > QC Physics > QC610.3 Electric conductivity
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Sari Minarta Silaban
Date Deposited:	18 Jul 2026 04:58
Last Modified:	18 Jul 2026 04:58
URI:	http://repository.its.ac.id/id/eprint/135390

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