Electronic Theses and Dissertation

Keberadaan Tempat Pemrosesan Akhir (TPA) Regional Blang Bintang berpotensi mencemari Sungai Krueng Uteun Siblah melalui aliran air lindi yang mengandung berbagai polutan. Pencemaran ini dapat berdampak terhadap kualitas ekosistem perairan dan kesehatan masyarakat. Penelitian ini bertujuan untuk menganalisis dampak air lindi terhadap kualitas air permukaan Sungai Krueng Uteun Siblah, mengidentifikasi parameter kualitas air yang terpengaruh, serta menentukan tingkat pencemaran berdasarkan baku mutu yang berlaku, menggunakan metode Indeks Pencemaran (IP).
Penelitian menggunakan pendekatan kuantitatif dengan pengambilan sampel air lindi pada titik influen dan efluen, serta air sungai pada titik hulu, outfall BPA, dan hilir. Parameter air lindi yang dianalisis meliputi parameter fisika, kimia, dan parameter logam berat, sedangkan parameter air sungai meliputi parameter fisika, kimia, dan parameter logam berat serta parameter biologi. Analisis dilakukan dengan membandingkan hasil pengukuran terhadap baku mutu Peraturan Pemerintah Nomor 22 Tahun 2021 dan menggunakan metode IP.
Hasil penelitian menunjukkan nilai IP sebesar 0,702 pada titik hulu, 4,328 pada outfall, 2,810 pada BPA, dan 2,059 pada hilir, yang mengindikasikan tingkat pencemaran ringan. Sistem pengolahan Instalasi Pengolahan Air Limbah mampu mereduksi konsentrasi pencemar dengan efisiensi rata-rata berturut-turut sebesar 23,87% parameter COD, 64,15% parameter BOD, 50,53% parameter TSS, 35,26% parameter nitrat, 62,19% ammonia (NH₃), 71,05% parameter Cd, dan 40,18% parameter Fe. Kualitas air lindi berpengaruh pada kualitas air Sungai krueng uteun siblah, oleh karena itu pemerintah daerah, pengelola TPA regional Blang Bintang perlu melakukan perawatan Instalasi Pengolahan Air Limbah (IPAL), peningkatan efektivitas pengolahan lindi dan pemantauan kualitas air secara berkelanjutan.
Kata Kunci: Air lindi, air permukaan, Instalasi Pengolahan Air Limbah, Indeks Pencemaran, parameter kualitas air

The existence of the Blang Bintang Regional Final Processing Site (TPA) has the potential to pollute the Krueng Uteun Siblah River through leachate containing various pollutants. This pollution can have an impact on the quality of the aquatic ecosystem and public health. This study aims to analyze the impact of leachate on the surface water quality of the Krueng Uteun Siblah River, identify affected water quality parameters, and determine the level of pollution based on applicable quality standards, using the Pollution Index (PI) method. The study used a quantitative approach with sampling of leachate at the influent and effluent points, as well as river water at the upstream point, BPA outfall, and downstream point. The leachate parameters analyzed included physical, chemical, and heavy metal parameters, while the river water parameters included physical, chemical, and heavy metal parameters as well as biological parameters. The analysis was carried out by comparing the measurement results with the quality standards of Government Regulation No. 22 of 2021 and using the IP method. The results of the study show an IP value of 0.702 at the upstream point, 4.328 at the outfall, 2.810 at the BPA, and 2.059 at the downstream point, indicating a low level of pollution. The Wastewater Treatment Plant system is capable of reducing pollutant concentrations with an average efficiency of 23.87% for COD parameters, 64.15% for BOD parameters, 50.53% for TSS parameters, 35.26% for nitrate parameters, 62.19% for ammonia (NH₃) parameters, 71.05% for Cd, and 40.18% for Fe. The quality of leachate affects the quality of the Krueng Uteun Siblah River. Therefore, the local government and the Blang Bintang regional landfill manager need to maintain the wastewater treatment plant (IPAL), improve the effectiveness of leachate treatment, and monitor water quality on an ongoing basis. Keyword: Leachate, surface water, Wastewater Treatment Plant, Pollution Index, water quality parameters