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TEKTAN
Published by Politeknik Negeri Lampung
ISSN : 20851278     EISSN : 27453472     DOI : https://doi.org/10.25181/tektan
Core Subject : Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Mechanical Engineering
Jurnal Tektan merupakan salah satu jurnal di Politeknik Negeri Lampung yang  menampung hasil penelitian berupa artikel ilmiah yang berkaitan dengan Ilmu Keteknikan Pertanian, Mekanisasi Pertanian, Teknik Kimia, Teknik Sumberdaya Lahan dan Lingkungan,dimana artikel tersebut belum pernah dipublikasikan. Jurnal TekTan di terbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Unit 3x dalam setahun. Jurnal Ilmiah Teknik Pertanian Ini diterbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Sebagai Wadah Bagi Dosen, Mahasiswa dan PLP untuk mempublikasikan karya penulisannya. Jurnal ini sempat mengalami Jeda Pengaktifan Selama 3 tahun mulai terbitan 2016 sampai Agustus 2019, hal ini disebabkan karena kekosongan tim pengelola Jurnal. Kemudian dengan manajemen pengelolaan yang baru maka diterbitkan kembali untuk volume 11 No. 3 pada tanggal 16 Desember 2019
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 7 No 1 (2015)" : 6 Documents clear
Pengaruh Frekuensi Pemberian Air Irigasi Terhadap Produktivitas Caisim Hidroponik dengan Media Sekam Bakar di PT. Momenta Agrikultura Lembang Epri Hartono; Muhammad Idrus
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 1 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i1.871

Abstract

The experiment was conducted at the PT. Momenta Agricultura Lembang Jawa Barat from March  to April 2014.  The objective of the research were to study irrigation frequency   of caisim hydroponic will given good yield and water productivity. Four level of irrigation frequency treatments were 1,3,5, and 7 times per day. The result of the research indicated that irrigation frequeny of 5 times per day of caisim hydroponic with carbonized rice hull media was obtained highest water productivity 7,45 kg m-3 compared to 1,3, and 7 times irrigation per day.  Irrigation frequency of 5 times per day was obtained good yield of caisim hydroponic is average 78,22 g/plant not significantly compared to yield of caisim non hydroponic with 1 times irrigation per day is average 80,78 g/plant.   Keywords: irrigation frequency, caisim, hydroponic, carbonized rice hull, production, and water productivity
Studi Pengolahan Limbah Cair Industri Tahu dengan Media Biofiltrasi Zeolit Dedi Anwar; Disna Damayanti Wijaya; Ismadi Raharjo
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 1 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i1.872

Abstract

The liquid waste is waste that most potential to pollute the environment. Most of the liquid waste originating from separate viscous liquid of clots in the manufacturing process and the filtration is called whey. Other sources of liquid waste from the process of manufacturing know. The amount of liquid waste generated by industrial manufacturing know is comparable to the use of water for processing. This study aims to determine the effect of detention time, the percentage of sludge to the concentration of COD, pH, TDS, NH3 and H2S from industrial wastewater carried out in aquarium biofiltration media testers with zeolite. Variable research operation is 12 days with 10% sludge and 14 days with 20% sludge. The results of this study, that the detention time effect on the concentration of COD reduction, TDS, NH3, H2S and pH rise. More significant decline occurred during the time of stay of 14 days with the provision of sludge by 20% with a total decline of COD 45,5 mg/liter/day, the results are consistent effluent quality standard PP No. 82 of 2001 with a threshold of 50 ppm, and 59,8 mg TDS/liter day, and for the TDS of 1000 ppm. Handling after a stay in the aquarium is the process of aeration for 2 days and 5 days with aerator power of 2,5 liters/sec to lower concentrations of NH3 and H2S. From the analysis that has been done, the concentration of H2S after aeration diving 5 days, 525 mg/lt. Based on these results indicate reduction of H2S ineligible waste water effluent quality standards. While the concentration of NH3 qualify allocated for “water class III”. NH3 concentration after aeration for 5 days is 0,2 ppm. Keywords: biofilters, zeolite, detention time
Evaluasi Degradasi Lahan Berdasarkan Identifikasi Perilaku Sungai dengan Pendekatan Geospasial di Sub Daerah Aliran Sungai Way Kandis Didik Kuswadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 1 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i1.873

Abstract

Population growth, utilization of natural resources and the increasingly development will be influence on environmental changes such as environmental degradation, and resource. Land use patterns in a watershed was not accordanced with the rules of spatial planning can cause a variety of problems such as the formation of critical land and pollution. Based on administrative areas, Way Kandis subwatershed covered sub district Kemiling, Rajabasa, Tanjung Senang, Natar and Jati Agung. The objectives of this research were (1) to analyze of landuse changes in Way Kandis subwatershed, and (2) to analysed the impact of landuse changes on the water quality changes at Way Kandis River. Steps of this research were: (i) gathered information and data, (ii) analysed of land use Way Kandis subwatershed, (iii)  observated of physical and chemical water quality Way Kandis River (iv) analysed of the impact landuse on water quality changes Way Kandis River. Based on the research, it can be some results: (i) Way Kandis Sub-Watershed covered an area of 17,320 ha; (ii) Landuse of Way Kandis Sub Watershed covered an area of 2,325 ha of plantations (13,42%), dryland farming an area of 11,227 ha (64,82%), settlements an area of 1,524 ha (8,80%), savanna an area of 536 ha (3,09%), open land an area of 1,130 ha (6,52%), shrubs an area of 31 ha (0,18%) and unidentified land an area of 547 ha (3,16%); (iii) The average of the DO value was 1.34-2.00 ppm. It  indicated that the water of Way Kandis river included the category of Class IV with the provisions of the agricultural sector; (iv) The average of the COD value was 48-128 ppm. It showed that the water of the Way Kandis river included in the category of Class IV with the provisions of the agricultural sector; (v) The average TSS value was 123-421 ppm. It showed that the water of the Way Kandis river included in the category of Class III and IV with the provisions of the fisheries and agriculture, except the average TSS value in Rajabasa Village. Keywords: evaluation of the land degradation, river behavior, geospatial
Inventarisasi dan Identifikasi Karakteristik Sub DAS di Wilayah Hutan Lindung Register 20 Pesawaran Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 1 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i1.874

Abstract

Characteristics of sub-watershed is a specific description of the sub-watershed  characterized by parameters related to morphometry, topography, soils, geology, vegetation, land use, hydrology and human. The objectives of this research are to obtain data on the characteristics of sub-watershed in the area of Forest Protected Areas Register 20 Pesawaran District, and estimate conditions, potential, and behavior/character necessary for the development of natural resources and human resources as well as institutional optimal. The research was done by identification of morphological criteria and morphometric mengidentikasi subzone, as well as the parameters subzone which is a very important element in relation to the response of rain falling in the sub-watershed into a run-off. The identification results show that the shape subzone is dominated by an elongated shape, orientation (aspect) sub-watershed is dominated by northwest direction, slope (slope) sub-watershed is dominated by the slope is steep and a bit steep, the flow pattern (drainage pattern) dominated the flow pattern denditrik, density dominated rivers grade medium density, land use is dominated by a mixture of dry land agriculture, as well as socio-economic characteristics are dominated by the rural economy. Keywords: characteristics of sub-watershed, forest protected areas register 20 pesawaran district
Redesain Sistem Penyediaan Air Minum (SPAM) Pedesaan di Desa Wiyono Kabupaten Pesawaran Andre Velthuzend; Arif Dwi Prajasena; Suprapto Suprapto; Ismadi Raharjo
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 1 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i1.875

Abstract

In general, the construction of rural water supply system is made to the design and construction materials are inadequate, so as to have a short lifespan opration with a fairly high level of leakage as happened in the village Wiyono, Gedongtataan, Pesawaran District. The purpose of this study was to redesign the Water Supply System  that already exist in the village Wiyono. The method used is the discharge measurements, measurements of topography, socio-economic surveys, calculation of water needs and budget plan (RAB), while the analysis of pressure and loss of water use Epanet program. Re-planning of water supply is done by counting the number of villagers until 2039 with the geometric method that is numbered 3,161 inhabitants. Discharge of water needed is 11,8 liters/sec, and a debit available on spring Wiyono of 55 liters/sec it is still insufficient to discharge water needs until the year 2039. The results of the measurement of topographic maps obtained height difference between springs with the service area is 113 m above sea level, then the drinking water distribution system uses gravity drainage system. EPANET hydraulic analysis results using the highest pressure is 47,05 and the lowest pressure that is 0,04 so that type of pipe used is PVC pipe with a diameter of between 26-140 mm in length of 5,090 meters. To reduce water turbidity due to changes in the level of turbidity then made slow sand filter basin with a length of 9.5 meters, a width of 4 meters and a height of 2,7 meters. Based on the results of the calculation of the Draft Budget (RAB) The investment needed is Rp. 1,060,000,000.00 with a 25-year life of the project, the obtained prices per m3 of clean water in Hamlet IV Sumberejo Rp. 700,00/m3. Keywords: rural water supply system, gravity system, hydraulic analysis, the price of water
Rancang Bangun Alat Pemberi Pakan Ikan Otomatis Menggunakan Pewaktu Bastaman Syah; Winarto Winarto; Imam Sofi'i
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 1 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i1.876

Abstract

Feed is an important factor in the process of aquaculture. In addition to the accuracy of the amount of feed given, the time of administration also plays an important role in the effectiveness of the use of feed. The objectives of this researh are to minimize errors feeding, both in terms of the amount of feed given and the time of administration is by designing the wake of a tool that can provide the right amount of feed and time. A feeder fish automatically designed using a timer 0f 4 pieces, consisting 1 piece timer used to set an eating schedule, and 3 pieces of each of the other is used to set a long life electric motor driving the blower, set the interval between the electric motor driving the blower with motor electric propulsion auger, and set long-life electric motor driving the auger. The test results show that the performance of the tool fish feed spreader tool can operate in three time feeding, morning, afternoon and evening. Dosage of feed within 30 seconds can remove fish feed pellets weighing 375.2 grams for medium and 233 for small pellets. Throw distance of 2.2 m and a width of 1.70 m for the distribution of pellets being as well as the distance of the throw of 2,25 m wide and 1,68 m for the distribution of small pellets. Keywords: spreader fish feed, timer, auotomatic

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