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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jurnal Teknologi Lingkungan
Budhi Purwoko
Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science

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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.  
EVALUASI TEKNIS PENGOLAHAN BATU ANDESIT GUNA MENCAPAI TARGET PRODUKSI DI PT KARYA SUMBER ALAM PERKASA KABUPATEN SANGGAU PROVINSI KALIMANTAN BARAT Idris Idris; Budhi Purwoko; Septami Setiawati
JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Vol 9, No 3 (2022): JELAST EDISI AGUSTUS 2022
Publisher : JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Permasalahan yang menyebabkan tidak tercapainya target produksi pada unit peremuk batu andesit yaitu kehilangan waktu kerja efektif peralatan sebesar 3,07 jam/hari dari target waktu kerja efektif 8 jam/hari dan ukuran material umpan melebihi batas maksimum batuan untuk masuk ke alat peremuk sebesar 861 mm yang menyebabkan kemacetan ketika proses peremukan berlangsung, sehingga produktivitas tidak berjalan efektif. Metode penelitian yang digunakan dalam penelitian ini adalah metode observatif kuantitatif, yaitu pengambilan data dilakukan dengan cara melakukan pengamatan secara langsung di lokasi penelitian serta pengumpulan data diolah dengan analisa komparatif yaitu melakukan perbandingan antara produksi teoritis dan produksi aktual dilapangan. Target produksi PT. Karya Sumber Alam Perkasa sebesar 1.024 ton/hari, sedangkan produksi aktual saat ini hanya sebesar 592,29 ton/hari. Oleh sebab itu target produksi yang diinginkan perusahaan belum tercapai. Upaya alternatif perbaikan yang diberikan yaitu dengan meningkatkan laju pengumpanan, mengurangi waktu hambatan dan memperkecil ukuran umpan maka produksi dapat meningkat sebesar 1.102.94 ton/hari sehingga target produksi perusahaan bisa tercapai.
ANALISIS PENGGUNAAN LAPISAN TANAH PENUTUP SEBAGAI MATERIAL PERKERASAN JALAN ANGKUT TAMBANG DI PT. KARYA SUMBER ALAM PERKASA, KABUPATEN SANGGAU, KALIMANTAN BARAT Annisa Agusfibrianti; Budhi Purwoko; Hendri Sutrisno
JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Vol 9, No 3 (2022): JELAST EDISI AGUSTUS 2022
Publisher : JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jelast.v9i3.57231

Abstract

PT. Karya Sumber Alam Perkasa is a mining company of granite commodities located in Pandan Sembuat Village, Tayan Hulu District, Sanggau Regency, West Kalimantan that uses hauling road pavement materials from other locations, so this research is carried out by testing the feasibility of using overburden to be used as hauling pavement material in pit three where the mining will be carried out. This research by taking three samples of disturbed soil in the field randomly for testing in the laboratory related to the physical properties (specific gravity, sieve analysis, hydrometer, liquid limit, plastic limit), compaction and soaking CBR to obtain results that become the parameters according the specification so the conclusions drawn regarding the feasibility if the sample to be a houling road pavement material.The result of this research are in the AASHTO classification the first sample is in A-7-6 group, the second sample is in A-7-5 group while the third sample in A-2-6 group, in the Van Der Merwe Limitation for the first and the second sample are in the same class which is medium, while the third sample is in the low class. The immersion CBR values for the first, second, and third samples were 1,791%, 0,448%, and 5,663% so that all three samples are not suitable to be used as road pavement material for hauling road at PT. KSAP because it can’t fulfil some conditions which are the provisions in its specification.
Co-Authors Annisa Agusfibrianti Fitriana Meilasari Hendri Sutrisno Idris Idris Septami Setiawati