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Perencanaan Kolam Stabilisasi Untuk Penanganan Air Lindi (Leachate) Pada Calon Tempat Pembuangan Akhir (TPA) Kabupaten Mesuji Ismadi Raharjo; Suprapto Suprapto; Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 1 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i1.830

Abstract

Land sites of Final  Processing Disposal (TPA) Mesuji district has a relative flat  topographic  with a 3,20 ha area, the extents of the allocation of land use is planned landfill  area  2.60 ha and the remaining  0.60 ha as  area supporting infrastructure.  From the analysis of the water balance in  landfill sites was obtained  percolation 39 mm/month, with an area of landfill area of 2.60 ha planned then be generated leachate (leachate) that must be managed as much as 33.2 m3/day.  Leachate treatment plan using stabilization pond method consisting of an anaerobic pond with  a detention time  of 12 days and an 398.40 m3 capacity will reduce pollutants leachate influent BOD around 1500 mg/lt be 288.46 mg/lt; Facultative pond with a detention time  of 8 days and a capacity of 265.60 m3 pond will reduce pollutants leachate influent BOD 288.24 mg/lt be 79.51 mg/lt, and  Maturasipond  with a detention  of 10 days and a capacity of 322 m3 pond will reduce the material influent BOD of leachate pollutant 79.51 mg/lt be 16.86 mg/lt is further eligible to flow into water bodies (rivers).  The texture of the soil conditions in the local area is clay, then structural stabilization pond construction recommended  using reinforced concrete plate. Keywords: Leachate, BOD, Sstabilization Pond, Detention Time, Capacity Pond
Identifikasi Wilayah Rawan Banjir Kota Bandar Lampung Dengan Aplikasi Sistem Informasi Geografis (SIG) Didik Kuswadi; Iskandar Zulkarnain; Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.840

Abstract

Development and deforesting were quite in many parts of Indonesia. Change of function become impervious land caused an imbalance of hydrology and watershed conditions. The objective  of this research were (1) to determined the class of a flood- prone of Bandar Lampung City, (2) to made a map of flood- prone of  Bandar Lampung City. Based on the research, it can be some results: (1) The class interval of flood- prone is 100; (2) Flood- prone  levels of Bandar Lampung District is divided into five classes, namely: very low, low, medium, high, very high; (3) The domination of flood- prone area of Bandar Lampung City was medium, the areas of this is 104.74 km2 (57.28%); (4) The highest potential flood- prone was Western Telukbetung sub districkt, that they had the condition were the slope is flat, soil type was inceptisols, height of land was 0.0 to 12.5m from sea water level, and rainfall was high. Keywords: identification, flood-prone, geographical information system
Study Morfologi dan Marfometri Das Way Mesuji Danang Primanggara; Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.860

Abstract

Morphology and Morphometry watershed is a specific description of the watershed that was characterized by parameters related with: broad, shape, orientation, altitude, slope, flow patterns, river gradient, and the River’s density. This study aims to obtain data Morphology and Morphometry watershed conditions. Steps of this study were (1) identified criteria of morphology and morphometry watershed, (2) overlay watershed parameters. The results of this study were (1) Way Mesuji sub watershed is dominated by an elongated shape. This is caused the value of each Circularity Ratio Way Mesuji sub-watershed  less than 0.5; (2) Sub-watershed Slope is dominated by flat and ramps.This will result a slow velocity river stream; (3) region  altitude was dominated by a height of 25 meters above sea leve; (4) The flow pattern was dominated by the denditrik flow pattern; (5) The gradient of the river was dominated  less than 1%. Its caused that  river flow velocity will be low; (6) river density was dominated by medium and low grade.This shows that this area enough water reserves. Keywords: morphology, morphometry, Way Mesuji watershed.
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
Perencanaan Sistem Penyediaan Air Minum (SPAM) Pedesaan Dusun IV Desa Sumberejo Kabupaten Tanggamus Dwi May Juwita; Repinka Cornelia; Aqmal Satrio Dirgantara; Suprapto Suprapto; Ismadi Raharjo
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 2 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i2.890

Abstract

Fresh water is a basic need for human, so is  to be normal if the water sector gets priority in the handling and fulfillment. The springs are located in Dusun  Sumberejo IV should be able to meet the water needs of the local community. The purpose of this study was: (1) identify potential sources of raw water (water) in Dususn Sumberejo IV, (2) calculate the number of people that will be served as well as the need for clean water, (3) designing the layout and capacity of the reservoir, (4) determine the appropriate piping standards for Rural Fresh Water Supply System (SPAM), and (5) predict the draft budget piping. The method used is the discharge measurements, measurements of topography, socio-economic survey, the calculation of water requirements, head loss effective calculation and Budget Plan (RAB), whereas for hidraulic analysis using Epanet program. Results of fresh water supply planning is done for rural population projections to 2020 the number of 491 people, need for fresh water in the Dusun Sumberejo IV 0.32 liters/sec, discharge available in the spring Sumberejo is 0.35 liters/second then the discharge is still sufficient for the water needs until the year 2020. From the measurement results obtained topographic maps + 50.42 m height difference by elevation above sea level on the Bench Mark (a point of reference, the location of the source of raw water springs) + 446 m above sea level and at the end point measurement (area of service farthest) +399.57 m above sea level, so the system can distribuasi to the service area using gravity. The results of the hydraulic analysis using EPANET used PVC pipes with various diameters ranging from 12.5 to 50 mm with a length of 4876 meters and its accessories (accessories). Based on these forecasts Rural SPAM development requires an investment of around Rp. 89,000,000.00, then the system when the service is expected to last for 25 years as well as in the development of investment in the form of loans with mortgage interest (soft loans) amounted to 6% of the obtained water price per m3 in Dususn IV Sumberejo IV  around Rp. 1450.00/m3. Keywords: rural SPAM, gravitasi system EPANET
Analisis Hidrologi untuk Pendugaan Debit Banjir dengan Metode Nakayasu di Daerah Aliran Sungai Way Besai Repinka Cornelia; Suprapto Suprapto; Kelik Istanto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 2 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i2.891

Abstract

Way Besai is one tributary Way Kanan located in West Lampung and Way Kanan  Regency, Lampung Province. Way Besai riverbanks downstream of the low areas during the rainy season in some locations overflowing river submerged. This condition is exacerbated by the destruction of the river catchment Way Besai resulting in flooding during the rainy season. The purpose of this study to estimate precipitation plan, and estimate the flood discharge plan using Nakayasu. Activities undertaken include the determination of the maximum daily rainfall, creation of Thiessen polygons, calculation of the maximum average rainfall, the calculation of the frequency distribution, determination of the suitability of the Chi Square test the method Gumbel and Log Pearson III method, the calculation of the design rainfall distribution, as well as the calculation of flood discharge by using Nakayasu method. The results of the calculation of rainfall plan (after the Chi Square test) were obtained for 10-year return period of 83.46 mm/day. Return period of 25 years at 105.41 mm/day. 50-year return period of 123.70 mm/day. Flood discharge plan obtained by unit hydrograph method Nakayasu of 244.15 m3/sec for a period of 10years, 308.35 m3/sec for 25-year return period and 361.83 m3/sec for a period of over 50 years. The time required for the peak flood from upstream to downstream for 19 hours. Keywords: analysis of hydrology, rainfall plan, and flood discharge plan
Pengaruh Curah Hujan terhadap Kualitas Air Sungai Way Kuripan sebagai Sumber Air Baku Perusahaan Daerah Air Minum (PDAM) Way Rilau Ismadi Raharjo; Iskandar Zulkarnain; Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 2 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i2.894

Abstract

So far almost 30%  people need clean water of urban city in Bandar Lampung supplied by PDAM Way Rilau. There are about 12 sources of raw water consisting of surface water , ground water, and springs are treated by PDAM Way Rilau. One source  of raw water is surface water from Way Kuripan processed in "Water Treament Plant (WTP I and WTP II). Therefore,as a surface water, the source of raw water from Way Kuripan is always influenced by external conditions, especially rainfall this study was conducted in early 2013 to take on secondary data consisting of raw water quality parameters: turbidity, degree of acidity (pH), total hardness , dissolved content of Cl, SO 4, KMnO 4, Ca, and Mg are derived from the "PDAM Raw Water analysis Report" for the year 2012; While rainfall data taken from Lampung State Polytechnic Climatology Station which includes parameters: Number of Monthly rainfall , Number of Days Rain, and Rain Maximum every month. Raw water quality parameters of river Way Kuripan highly influenced by rainfall is turbidity, in addition to the content of sulfate and dissolved clorida. In the year 2012 recorded the highest raw water turbidity of 79.1 NTU in December with the condition number of monthly rainfall 354.2 mm, 22 days rainfall, and the maximum daily rainfall of 57.0 mm. However, all of the raw water parameters recorded in the year 2012 is still below the threshold of water-based Group B Regulation  in PP No 82 Tahun  2001.  Because of the quality of raw water from the Way Kuripan strongly influenced by rainfall, especially for turbidity parameters, it is necessary to increase the dose of coagulant is more during the rainy season from December to April. Keywords: raw water, rainfall, water quality, turbidity
Pembuatan Peta Tingkat Bahaya Erosi Daerah Pengaliran Sungai Way Sulan Lampung Selatan Roslina Jayanti; Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 2 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i2.896

Abstract

Erosion potential map (TBE) is a thematic map that can be used for various purposes, especially with regard to the management of land resources. As long as the map is not yet available Erosion potential Way Sulan Watershed  South Lampung regency in digital form that is created using ArcGIS 9.3. Creating maps Erosion potential is intended to provide information about the Regional Erosion potential At River Way Sulan. The Digital Map is created by a projection coordinate transformation step Maps South Lampung District , Land Cover Map, Map Conditions Slope, and map making rain erosivity index, then specify limits Watershed Way Sulan based network of rivers and topography. The next step overlaying of 4 (four) of the map and perform value calculation Erosion potential and Erosion Hazard Class. Overlay Map of R, K, LS and CP resulted in a Land Unit Map with land unit number 1 to 232 with  erosion hazard classes different. Keywords: erosion potential map, erosion hazard class, ArcGIS 9.3
Co-Authors Andre Velthuzend Aqmal Satrio Dirgantara Arif Dwi Prajasena Danang Primanggara Didik Kuswadi Dwi May Juwita I Gde Darmaputra Iskandar Zulkarnain Ismadi Raharjo Kelik Istanto Muhamad Idrus Repinka Cornelia Roslina Jayanti