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All Journal Jurnal Penelitian Pertanian Terapan Jurnal Ilmiah Inovasi Jurnal Abdi Insani TEKTAN Teknika Sains : Jurnal Ilmu Teknik Indonesian Journal of Environment and Sustainability Issues
Kuswadi, Didik
Politeknik Negeri Lampung
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Deteksi Akuifer Air Tanah Menggunakan Metode Geolistrik (Studi Kasus di Politeknik Negeri Lampung) Didik Kuswadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1465

Abstract

In fact, the interpretation of groundwater potential is not as easy as it is predicted, even often quite difficult and requires elaborate equipment. This remembers the formation and movement of groundwater in nature, so that measurements cannot be carried out directly. Interpretation of groundwater potential will always include two main objectives, namely: (1) soils or rocks as a medium where groundwater is acquired, and (2) groundwater as a liquid that fills the cavity in the soil or rocks. Some ground level investigation methods that can be done, including: Geological method, Gravity method, Magnetic field method, seismic method, and Geoelectric method. From these methods, the Geoelectric method is a very widely used method and the result is quite good. These geoelectric estimates are intended to obtain an overview of the subsurface of the soil and the possibility of groundwater and minerals at a certain depth. These geoelectric estimates are based on the fact that different materials will have different types of prisoners when they are electrically flowing. Groundwater has a lower type of prisoner than mineral rocks. The objectives of the study are: (1) Identifying soil layer formations and precise drilling depth at points of observation, (2) creating a map of groundwater layer depth distribution (groundwater contour). The stages of this study, namely: (1) equipment preparation, (2) The conjectives of the type of prisoner geoelectric with Schlumberger configuration, (3) The collection of field data, (4) Analysis and interpretation of field  data. Based on the results of analysis and discussion, can be concluded several things, namely: (i) water carrying layer in location I (TG-01) is suspected to be found in the TUFA layer of Andesit with a depth of 25-61 meters and a layer of andesite Breksi with a depth of more than 61-100.0 meters, (ii) flow of water through intergrain space and cracks/gaps with the potential of small water/until moderate.
Kombinasi Proses Presipitasi dan Adsorpsi untuk Menangani Limbah Bahan Berbahaya Beracun (B3) Hasil Kegiatan Analisis di Laboratorium Analisis Polinela Ismadi Raharjo; Didik Kuswadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 2 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i2.1896

Abstract

The objectives of this research to determine the combination of the process of precipitation and adsorption in reducing the content of pollutant metals in the hazardous waste category B3 (hazardous toxic substances) produced at the Polinela Analysis Laboratory. The study was conducted in May to November 2019. The results obtained from 3 (three) times of sampling in May 2019 obtained a description of the characteristics of heavy metal content in wastewater in the form of Aluminum (Al) an average of 1.59 ppm, iron content ( Fe) an average of 9.73 ppm and Cadmium (Cd) an average of 0.022 ppm. From these results it can be seen that the wastewater containing Al and Fe has passed the threshold quality standard of waste water that is allowed to be discharged into water resource (PP No.82 of 2001), while the Cd content is still below the threshold. Furthermore, through the precipitation process with Ca (OH)2 0.8 M and adsorption using activated charcoal with contact time of 3 (three) hours the content of pollutants in wastewater can be reduced to 0.92 ppm for Al metals and 0.1 ppm for metals Fe, so that it is below the standard quality of waste water that is allowed to drain in water. Keywords: adsorption, precipitation, quality standard
Kriteria Seleksi Bibit Pala melalui Model Pemuliaan Partisipatif di Perkebunan Pala Jakty Kusuma; Wiwik Indrawati; Didik Kuswadi; Muhammad Tahir
Jurnal Ilmiah Inovasi Vol 20 No 1 (2020): April
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jii.v20i1.1953

Abstract

Proses pengelolaan pembibitan pala yang kurang baik pada Perkebunan Pala Desa Banjaran menyebabkan kualitas bibit pala rendah dan berakibat pada penurunan harga jual dari bibit tersebut. Capaian umum dari kegiatan pengabdian kepada masyarakat ini diharapkan dapat mengembangkan kelompok tani mitra mandiri dalam praktik GAP (good agricultural practice), seleksi, dan pembibitan tanaman pala. Secara khusus, kegiatan ini bertujuan untuk menerapkan teknologi bibit pala sambutan (sambung pala hutan), penyungkupan, modifikasi media tanam, dan seleksi terarah agar terjadi peningkatan kualitas pertumbuhan bibit pala. Hasil percobaan dengan penerapan teknologi pala “sambutan” (sambung pala hutan) yang diintegrasikan dengan penyungkupan dan modifikasi media mampu meningkatkan kualitas pertumbuhan bibit dengan tingkat keseragaman hingga 90%. Adapun kriteria seleksi yang ditentukan bersama dengan masyarakat adalah laju pertumbuhan, warna daun, jumlah daun, tinggi tanaman, dan nama lokal. Laju pertumbuhan dan jumlah daun berkontribusi sebanyak 87% nilai seleksi yang dipilih oleh para petani. Nama lokal atau spesies pala yang digunakan juga menjadi faktor penentu dari kualitas bibit yang baik. Melalui perbaikan teknik pembibitan yang benar dan seleksi pemuliaan partisipatif, diharapkan dapat menghasilkan bibit yang berkualitas. Keywords: pembibitan, seleksi, pala
English English: Indonesia Fitriani Fitriani; Bustanul Arifin; Fembruari Erry Prasmatiwi; R Hanung Ismono; Dyah Aring Hepiana Lestari; Sutarni Sutarni; Didik Kuswadi
Jurnal Penelitian Pertanian Terapan Vol 22 No 1 (2022)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v22i1.2174

Abstract

This study conducted to analysis the unsustainable risk of coffee farming based on the farmer’s perspective. The field survey set with questioner as a tool in exploring the farmers’ condition. The method of analysis applied Chi-square and regression model. The results indicated that coffee farmer’s perspectives on risk significantly differ based on the education level. Environment risk conditions referred to land degradation, decrease water quality, and water shortage, biodiversity loss, and global warming impact. The economics risk referred to land certainty and decrease of yield (failure). On the other side, the coffee farming income has determined by land area, a number of coffee trees, land tenure, and the participation in the certification scheme.
Sumber Kerentanan Ekonomi Petani Kopi Di Hulu DAS Lampung: LAMPUNG SMALLHODERS COFFEE FARMER’S ECONOMICS VULNERABILITY SOURCES IN UPSTREAM WATERSHEDS Fitriani Fitriani; Didik Kuswadi
Jurnal Penelitian Pertanian Terapan Vol 22 No 3 (2022)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v22i3.2286

Abstract

It is necessary to strengthen the resilience of farmer households by increasing their adaptability and mitigating difficult conditions or risks of business that make unsustainable. The sources of the potential economic vulnerability of farmer households are the initial information for basic dealing with business risks. The ability to identify potential sources of vulnerability as an economic risk will stimulate efforts to increase productivity, income, and rural economic growth. This research focuses on exploring the potential sources of the economic vulnerability of coffee farmers' households in the upstream Lampung watershed. The survey research conducted in coffee production centers in three sub-districts coverage​​the upstream Way Besai watershed, West Lampung. It was Air Hitam, Way Tenong, and Sumber Jaya sub-districts with a total of 165 coffee farmers as respondents. The data analysis method used a non-parametric statistical approach. The results of the study indicate that the source of the potential economic vulnerability of farmers in the upstream watershed is closely related to the ownership and area of ​​land assets. Land assets are the main source of income for farming households and a source of household expenditure allocation for both food and non-food, including for savings and investment purposes. These important factors become important entry points in efforts to build resilient farmer household resilience. Resilience is the basic social capital in achieving sustainable production.
Identifikasi Potensi Wilayah Banjir Kampus Politeknik Negeri Lampung dengan Pendekatan Geospasial Rizki, Sekar Dwi; Idrus, Muhammad; Kuswadi, Didik
TEKNIKA SAINS Vol 9, No 2 (2024): TEKNIKA SAINS
Publisher : Universitas Sang Bumi Ruwa Jurai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24967/teksis.v9i2.3540

Abstract

Kampus Politeknik Negeri Lampung dilalui oleh Sungai Way Kandis dan merupakan Daerah Aliran Sungai (DAS) dari Sungai Way Kandis. Penataan ruang kampus perlu mempertimbangkan letak wilayah kampus sebagai DAS Sungai Way Kandis tempat air mengalir dan tergenang, menjadikan wilayah kampus menjadi rawan terkena banjir. Penelitian ini dilakukan untuk mengidentifikasi potensi banjir di wilayah Kampus Polinela, mengidentifikasi potensi banjir pada wilayah kampus sesuai dengan wilayah administasinya dan sebagai dasar pengambilan kebijakan dalam pembangunan yang akan dilakukan. Proses identifikasi potensi banjir yang dilakukan memerlukan bahan yaitu peta administrasi, peta bentuk lahan, peta kelerengan, peta jenis tanah, peta curah hujan, dan peta jaringan drainase yang diolah menggunakan pendekatan geospasial dengan menggunakan ArcGIS 10.8. Hasil analisis dari perhitungan scoring dan overlay yang dilakukaan dapat disimpulkan bahwa Areal Polinela didominasi dengan kelas kerawanan banjir tinggi seluas 0,3435 km2 atau 98,14 persen dari keseluruhan luas Polinela. Sedangkan berdasarkan administrasi wilayah Polinela didominasi oleh kategori tinggi yang terletak di Kecamatan Natar Kabupaten Lampung Selatan seluas 0,2941 Km2 atau 84,03 persen dari keseluruhan luas areal Polinela. Penanggulangan untuk pencegahan banjir perlu dilakukan dengan melakukan konservasi di daerah hulu sungai secara terintegrasi dan Kampus Polinela yang merupakan DAS Sungai Way Kandis perlu melakukan kerjasama dengan instasi-instansi terkait untuk melakukan pencegahan terjadinya banjir.
Utilization of Slow Sand Filter to Reduce Wastewater Pollution Levels from Restaurant Operations Rizki, Sekar Dwi; Didik Kuswadi; Evline Aunike Pasaribu; Nila Akhmila Rizka; Tiorida Mantanari
Indonesian Journal of Environment and Sustainability Issues Vol. 2 No. 1 (2025): June 2025 | Indonesian Journal of Environment and Sustainability Issues
Publisher : WISE Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70211/ijesi.v2i1.197

Abstract

Restaurant wastewater is categorized as domestic wastewater. It contains high levels of fats, spices, detergents, and cleaning agents, all of which can pose substantial environmental hazards if inadequately treated. This study compared the effectiveness of slow sand filters with various thicknesses of filter material and measured physical and chemical parameters, employing a combination of natural filter media, including gravel, silica sand, zeolite, and coconut fiber. The study assessed several water quality parameters, including pH, ammonia concentration, temperature, turbidity, and dissolved oxygen (DO). The results indicate that the filtration system effectively reduced ammonia concentrations to levels that comply with the regulatory standards. Parameters pH values had minor changes, they remained below the thresholds required by applicable regulations. A substantial reduction in turbidity was observed, while the effluent temperature remained within acceptable environmental limits. However, a decrease in DO levels was noted post-filtration, due to microbial activity and temperature dynamics within the filtration media. Overall, the findings suggest that slow sand filtration systems utilizing natural and locally available materials offer a low-cost, and environmentally sustainable alternative for the treatment of restaurant wastewater.
PENINGKATAN KESIAPSIAGAAN BENCANA MELALUI PEMETAAN JALUR EVAKUASI: STUDI KASUS SMA NEGERI 5 BANDAR LAMPUNG Phelia, Arlina; Darmaputra, I Gde; Raharjo, Ismadi; Idrus, Muhammad; Kuswadi, Didik; Putri, Vera Chania
Jurnal Abdi Insani Vol 12 No 10 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i10.2846

Abstract

SMA Negeri 5 Bandar Lampung is located in a strategic yet disaster-prone area, facing risks such as floods, earthquakes, and fires. The school did not have a structured evacuation route system or evacuation maps displayed in strategic areas, leaving the school community without clear visual guidance for evacuation routes and assembly points during emergencies. This community service activity aimed to develop evacuation route maps based on the actual spatial conditions of the school to improve preparedness. The methods included field observation, manual measurement, visual documentation, and digital mapping using AutoCAD, with design validation involving school stakeholders. The activity produced a proportional digital evacuation map showing routes from all strategic areas to three designated assembly points. Before the implementation, only 16.7% of evacuation-supporting elements were available; after installation and dissemination, the preparedness index improved significantly from an average of 22.7% to 76.7%. The map is clear, easy to understand, and serves as an essential visual reference to support the Disaster-Safe School program. The development of this evacuation route map has improved the structural preparedness of the school and provides a technical foundation for future disaster drills and training.
Co-Authors Andre Velthuzend Andy Eka Saputra Bagas Arya Hermuda Bustanul Arifin Darmaputra, I Gde Darmaputra, I Gde Diano Hadi Putra Evline Aunike Pasaribu Fembriarti Erry Prasmatiwi Fitriani Gisnia Amaliyah Gunawan Manihuruk I Gde Darmaputra Idrus, Muhamad Ismadi Raharjo Ismadi Raharjo, Ismadi Jakty Kusuma Kelik Istanto Lestari, Dyah Aring Hepiana Muhamad Idrus Muhammad Idrus Muhammad Tahir Niko Suhendra Nila Akhmila Rizka Nurwijayanti Phelia, Arlina Putri, Vera Chania Realis Prasetyawan Sekar Dwi Rizki Siti Kholofah Suprapto Suprapto Suprapto Suprapto Sutarni Sutarni Tiorida Mantanari Velthuzend, Andre Wiwik Indrawati Yundari, Yundari