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Analisis Konduktivitas Listrik Lindi Tempat Pembuangan Akhir (TPA) Batu Layang Terhadap Jarak Pemukiman Masyarakat Irda Dwi Utari; Fitriana Meilasari; Arifin
G-Tech: Jurnal Teknologi Terapan Vol 7 No 2 (2023): G-Tech, Vol. 7 No. 2 April 2023
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (661.242 KB) | DOI: 10.33379/gtech.v7i2.2392

Abstract

Timbulan sampah meningkat setiap tahunnya sebesar 2,64%, TPA Batu Layang menerapkan sistem open dumping sehingga menghasilkan lindi dapat mencemari tanah dan air tanah sekitar pemukiman masyarakat.  Lindi ini bersifat toksik dan mengandung logam berat sehingga perlu dilakukan pengukuran konduktivitas lindi untuk mengetahui nilai konduktivitas sebaran lindi terhadap jarak pemukiman masyarakat sehingga mengurangi pencemaran lindi di bawah permukaan tanah.  Pengukuran konduktivitas dilakukan secara in-situ dan terdapat 16 titik pengukuran terdapat pada Titik pengambilan sampel dilakukan di parit sekitar zona E, parit sebelum tanggul, dan parit sesudah tanggul.  Hasil penelitian menyimpulkan bahwa nilai korelasi pengaruh konduktivitas terhadap jarak sebesar 0,585 yang menunjukkan hubungan cukup kuat sehingga semakin dekat pengambilan sampel TPA maka nilai konduktivitas semakin besar dan semakin jauh pengambilan sampel TPA maka nilai konduktivitas semakin kecil.
Analisis Sebaran Lindi di Sekitar Kawasan TPA Batu Layang Berdasarkan Nilai Resistivitas: Analysis of Leachate Distribution Around Batu Layang TPA Area Based on Resistivity Value Fitriana Meilasari; Hendri Sutrisno; Budhi Purwoko
Jurnal Teknologi Lingkungan Vol. 24 No. 1 (2023)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2023.247

Abstract

Open dumping activities at the Batu Layang TPA can potentially cause leachate pollution to the environment. Leachate that seeps into the ground can contaminate groundwater. Most people around the Batu Layang TPA use groundwater for MCK (bath, wash, toilet) purposes. If the groundwater is contaminated with leachate and used sustainably by the community, it will impact health problems. Therefore, it is necessary to manage the distribution of leachate. One of the leachate management systems is modeling the potential distribution of leachate below the soil surface. The purpose of this research is to analyze the distribution of subsurface leachate around the Batu Layang landfill area based on the resistivity value. They are modeling the potential distribution of leachate below the ground surface in this study using the Wenner configuration geoelectric method. Processing of geoelectrical measurement data using Res2DInv software so that the potential distribution of leachate under the soil surface is obtained in 2 Dimensional forms. The result of this research is the resistivity value <10 m is interpreted as leachate, with an error rate (RMS error) of 7.7–11.3%. The geology of the study area is composed of peat soil, where the constituent rocks have high porosity (83.43–92.92%) and increased permeability (2.97×10-5–8.31×10-5 m/s). Porosity and permeability affect the infiltration of leachate into the soil. The topography of the study area is relatively flat, so it is estimated that the velocity of leachate distribution horizontally and vertically under the soil surface is moderate. ABSTRAK Kegiatan open dumping di TPA Batu Layang dapat berpotensi menyebabkan pencemaran lindi ke lingkungan. Lindi yang merembes ke dalam tanah dapat mencemari air tanah. Sebagian besar masyarakat di sekitar TPA Batu Layang memanfaatkan air tanah untuk keperluan MCK (mandi, cuci, kakus). Jika air tanah tersebut tercemar lindi dan dimanfaatkan secara berkesinambungan oleh masyarakat maka akan berdampak pada gangguan kesehatan. Oleh karena itu, perlu adanya pengelolaan sebaran lindi. Satu di antara sistem pengelolaan lindi adalah pemodelan potensi sebaran lindi di bawah permukaan tanah. Tujuan penelitian adalah analisis sebaran lindi bawah permukaan tanah di sekitar kawasan TPA Batu Layang berdasarkan nilai resistivitas. Pemodelan potensi sebaran lindi di bawah permukaan tanah pada penelitian ini menggunakan metode geolistrik konfigurasi Wenner. Pengolahan data hasil pengukuran geolistrik menggunakan software Res2DInv sehinggga didapatkan potensi sebaran lindi di bawah permukaan tanah dalam bentuk 2 Dimensi. Hasil dari penelitian ini adalah nilai resistivitas <10 Ωm diinterpretasi sebagai lindi, dengan tingkat kesalahan (error RMS) sebesar 7,7–11,3%. Geologi daerah penelitian tersusun oleh tanah gambut, dimana batuan penyusunnya memiliki porositas tinggi (83,43–92,92%) dan permeabilitas tinggi (2,97×10-5–8,31×10-5 m/s). Porositas dan permeabilitas mempengaruhi daya infiltrasi lindi ke dalam tanah. Topografi daerah penelitian relatif datar sehingga diperkirakan kecepatan sebaran lindi secara horizontal maupun vertikal di bawah permukaan tanah sedang.  
Two-Dimensional Modeling of Leachate Distribution in Batu Layang Landfill on Peat Soil using Geoelectric Method Fitriana Meilasari; Hendri Sutrisno; Arifin Arifin; Rizki Purnaini; Irda Dwi Utari
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 20, No 3 (2023): November 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v20i3.633-643

Abstract

The open dumping system implemented by the Batu Layang landfill can produce leachate, contaminating groundwater around the landfill. Groundwater contaminated with leachate, if used by the community, can cause health problems. Therefore, management efforts were needed, such as subsurface leachate modeling. This study aims to model the distribution of subsurface leachate in 2 dimensions. The modeling of leachate distribution below the soil surface used the Wenner configuration geoelectric method. The number of geoelectric measurement paths was two paths. The length of each track was 195 m, with a distance of 5 m between the electrodes. Data obtained from resistivity values were analyzed using the Res2Dinv application. The calculation of leachate discharge used the water balance method. Based on the inversion results using the Res2Dinv software, the resistivity value of leachate-contaminated soil in line 1 was 1.19-9.43 Ωm, and track 2 was 0.5-10.2 Ωm. The leachate resistivity value was <10 Ωm because the leachate contains inorganic minerals (metals), so the resistivity value was low. Land contaminated with leachate was estimated to be spread as far as 195 m. The most profound leachate depth was estimated at 39.4 m. Batu Layang Landfill leachate discharge in Zone E averages 4 m3/day.