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Jurnal Mahasiswa Jurusan Teknik Pengairan
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Studi Perencanaan Konsolidasi Dam di Sungai Mujur Desa Pasrujambe Kecamatan Pasrujambe Kabupaten Lumajang Pambudi, Yan Ahmad Christy; Dermawan, Very
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Gunung Semeru adalah salah satu gunung api paling aktif di Indonesia. Letusan GunungSemeru pada umumnya berlangsung singkat dan relatif kecil, akan tetapi berlangsung 10-20 menitsekali sepanjang tahun. Sungai Mujur merupakan salah satu sungai yang berada di DAS Mujur yangmembawa aliran material hasil letusan Gunung Semeru. DAS Mujur mempunyai luas DAS 44,904km2 dengan panjang sungai utama 16,95 km2. Pada musim hujan dengan intensitas tinggi dan durasiyang lama, terjadi  mass movement yang membawa material seperti batu-batuan, kerikil, dan pasirkarena slope sungai yang cukup curam. Kondisi alur dan dasar sungai yang membawa material hasilletusan harus dilakukan pengaturan, terutama pada bagian tikungan sungai agar proses agradasi dandegradasi di sungai terkendali. Analisa debit banjir rancangan kala ulang 25 tahun menggunakanmetode Hidrograf Satuan Sintetis Nakayasu sebesar 155,367 m3/dt, sedangkan debit desain untukbangunan konsolidasi dam dengan mempertimbangkan konsentrasi aliran sedimen sebesar 204,424m3/dt. Volume sedimen sekali banjir dengan kala ulang 25 tahun sebesar 199.918,30 m. Bangunankonsolidasi dam akan direncanakan dengan jarak ±215 m sebelah hilir tikungan sungai. Detail dimensibangunan konsolidasi dam yaitu tinggi main dam 3 m, lebar pelimpah 100 m, tebal mercu main dam2,5 m, kedalaman pondasi 2 m, tinggi sub dam 0,75 m dan tebal mercu sub dam 2,5 m.Mount Semeru is one of the most active volcanoes in Indonesia. The eruption of MountSemeru generally takes a short time and is relatively in a small scale, but lasts for 10-20 minutes athroughout the year. Mujur River is one of rivers located in the Mujur watershed that brings the flowof materials from the eruption of the Mount Semeru. In addition, the Mujur watershed has a total DASarea of 44,904 km2 with the main river length of 16.95 km2. During the rainy season with highintensity and long duration, a mass movement occurs and carries materials such as rocks, gravel, andsand due to the quite steep river slope. Therefore, the condition of the river channel and riverbedcarrying the eruption materials should be arranged, especially in the bend section of the river so thatthe process of agradation and degradation in the river may be controlled. Also, the flood dischargeanalysis of 25-year return period design using the Nakayasu Synthetic Unit Hydrograph method is155.367 m3/dt, while the design debit for consolidation of dam by considering the effect of sedimentconcentration is amounted to 204,424 m3/dt. The one-time flooded sediment volume with a 25-yearreturn period is 199,918.30 m3. Futhermore, the consolidation dam building will be planned in distanceof±215mdownstreamoftheriverbend.Moreover,thedetaileddimensionoftheconsolidationdambuilding are the height of the main dam is 3 m, the width of the main dam weir is 100 m, thethickness of the main dam is 2,5 m, footing depth is 2 m, the height of the sub dam is 0,75 m and thethickness of the sub dam is 2.5 m.
KAJIAN PERBANDINGAN METODE PERHITUNGAN INTENSITAS HUJAN YANG SESUAI DI LINGKUNGAN UNIVERSITAS BRAWIJAYA, MALANG Puspasari, Ria; Harisuseno, Donny; Chandrasasi, Dian
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK : Intensitas hujan yang terjadi di wilayah Kota Malang cukup tinggi dan sering kali menyebabkan genangan termasuk di Area Universitas Brawijaya. Studi ini dilakukan untuk memperoleh metode perhitungan intensitas hujan yang sesuai di Wilayah Universitas Brawijaya Malang dengan membandingkan data intensitas hujan pengamatan yang diperoleh dari penakar hujan otomatis atau ARR (Automatic Rainfall Recorder) yang berada di Laboratorium Hidrologi Teknik Pengairan dengan metode Talbot, Sherman, Ishiguro dan Mononobe. Menurut hasil analisa perbandingan yang dilakukan antara Metode Talbot, Sherman, Ishiguro dan Mononobe didapatkan hasil yang paling baik dan sesuai dengan karakteristik wilayah Universitas Brawijaya adalah Metode Sherman. Dengan nilai deviasi rata-rata terkecil yaitu 0,335, kemudian Kesalahan Relatif (%) rata-rata 12,449%, dan juga Koefisien Efisiensi Nash-Sutcliffe rata-rata sebesar 0,928. Kurva IDF (Intensitas-Durasi-Frekuensi) Metode Sherman menunjukkan kecocokan untuk memprediksi Intensitas hujan yang sesuai dengan karakteristik wilayah Universitas Brawijaya yang digunakan untuk perhitungan limpasan (Run-Off) dengan rumus rasional dan perhitungan debit puncak yang berfungsi dalam perencanaan bangunan air.   Kata kunci: Intensitas hujan, Talbot, Sherman, Ishiguro, Mononobe, Kurva IDF   ABSTRACT : The Rainfall intensity in Malang Area is quite high and it usually causing run-off including at University of Brawijaya Area. This comparation study was conducted to obtain the appropriate rainfall intensity calculation method at University of Brawijaya Area by comparing Talbot, Sherman, Ishiguro and Mononobe method with the observation rainfall intensity data from ARR (Automatic Rainfall Recorder) that located in the Water Resources Engineering Hydrology Laboratory. According to the results of the analysis between the Talbot, Sherman, Ishiguro and Mononobe methods, the best results that appropriate with the University of Brawijaya area characteristics are Sherman Method. With the smallest average deviation value 0.335, Relative Error (%) averaged 12.449%, and Nash-Sutcliffe Efficiency Coefficient average 0.928. The IDF Curve (Intensity-Duration-Frequency) of Sherman Method shows the suitability to predict the rainfall that appropriate with the University of Brawijaya area characteristics which is used to calculate the run-off with rational formula and for calculating the peak discharge that functioned for water structure planning. Keywords: Rainfall Intensity, Talbot, Sherman, Ishiguro, Mononobe, IDF curve.
EVALUASI KARAKTERISTIK PERMEABILITAS DAN KETAHANAN TERHADAP PIPING MATERIAL PIROKLASTIK HASIL ERUPSI GUNUNG KELUD TAHUN 2014 DAN APLIKASINYA SEBAGAI ALTERNATIF MATERIAL TIMBUNAN Nuari, Fianda Hifqi Sandar; Hendrawan, Andre Primantyo; Suprijanto, Heri
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: Di Indonesia , batu apung dan material piroklastik ditemukan dalam deposit besar di Sungai Kali Sambong, Kecamatan Ngantang, Kabupaten Malang, Jawa Timur, namun aplikasinya sebagai material timbunan masih terbatas. Dengan demikian, menjadi sangat penting untuk mempelajari karakteristik mekanik dan ketahanan terhadap bahaya piping untuk alternatif material timbunan. Untuk mengevaluasi karakteristik mekanik dilakukan uji pemadatan Standard Proctor untuk menentukan nilai kepadatan kering maksimum dan kadar air optimum sebagai material timbunan. Uji permeabilitas dengan Constant Head dilakukan untuk menentukan nilai koefisien permeabilitas. Uji ketahanan terhadap piping dilakukan berdasarkan Furumoto et al (2002) dengan kombinasi pada alat dari Fujisawa et al (2013). Dari hasil uji pemadatan Standart Proctor didapatkan nilai MDD dan OMC batu apung, material piroklastik dan material pasir masing – masing adalah 1,48 gram/cm3 dengan OMC 15%, 1,95 gram/cm3 dengan OMC 15% dan 1,95 gram/cm3 dengan OMC 15%. Untuk nilai koefisien permeabilitas (k) masing – masing 0,111 cm/dt, 0,0087 cm/dt dan 0,0091 cm/dt. Sedangkan untuk nilai (k) pada uji ketahanan terhadap piping masing – masing adalah 0,117 cm/dt, 0,023 cm/dt dan 0,018 cm/dt. Dapat disimpulkan bahwa batu apung memiliki kepadatan yang rendah dengan nilai (k) yang lebih besar dikarenakan batu apung memiliki rongga yang lebih besar untuk dapat meloloskan air.   Kata kunci : Batu Apung, Piroklastik, Permeabilitas, Piping, Timbunan ABSTRACT : In Indonesia, pumice and pyroclastic materials are found in large deposits in the Kali Sambong River, Ngantang District, Malang Regency, East Java, but their application as a backfill material is still limited. Thus, it becomes very important to study the mechanical characteristics and resistance to piping hazards for alternative backfill material. To evaluate the mechanical characteristics, Standard Proctor compaction test was performed to determine the maximum dry density value and optimum moisture content as the backfill material. The permeability test with Constant Head is performed to determine the permeability coefficient value. The piping resistance test was performed based on Furumoto et al (2002) with a combination of tools from Fujisawa et al (2013). From the result of Standard Proctor compaction test, the value of MDD and OMC of pumice stone, pyroclastic material and sand material are 1.48 gram / cm3 with OMC 15%, 1.95 gram / cm3 with OMC 15% and 1.95 gram / cm3 with OMC 15%., respectively. For permeability coefficient values ​​(k) of 0.111 cm / s, 0.0087 cm / s and 0.0091 cm / s, respectively. As for the value of (k) on the resistance test against piping 0.117 cm / s, 0.023 cm / s and 0.018 cm / s, respectively. It can be concluded that pumice stone has a low density with a larger (k) value based on the fact that the pumice stone has a larger cavity to drain the water. Keywords : Pumice, Pyroclastic, Permeability, Piping, Backfill
RASIONALISASI STASIUN PENAKAR HUJAN TERHADAP PERUBAHAN BESARNYA CURAH HUJAN RANCANGAN PADA DAS RONDONINGO, KABUPATEN PROBOLINGGO nurfitriani, Alvina; Limantara, Lily Montarcih
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: Pengembangan sumber daya air membutuhkan analisis hidrologi berdasarkan data  curah hujan, data debit,dan data  iklim yang benar, untuk menghasilkan perencanaan, penelitian, dan pengelolaan sumber daya air yang  efektif dan efisien. Untuk menentukan jumlah stasiun penakar hujan dan penyebaranya yang ideal, maka perlu dilakukan analisa rasionalisasi stasiun Penakar hujan metode World Meteorological Organization (WMO), metode Kagan Roda dan metode bobot. Pada DAS Rondoningo seluas 233 Ha telah terpasang 8 stasiun penakar hujan, menurut analisa metode WMO diketahui terlalu rapat. Berdasarkan rasionalisasi metode Kagan Roda dan metode Bobot dapat ditentukan cukup3stasiun hujan dipertahankan dan 5 stasiun hujan ditutup. Hujan rancangan metode Gumbel dan Log Person III,berdasarkan data hujan antara 8 stasiun hujan dan dari 3 stasiun hujan menghasilkan selisih ysng kecil 8mm s/d10 mm, Hal ini mempertegas bahwa pada DAS Rondoningo tidak perlu dipasang 8 stasiun tetapi cukup dipasang 3 stasiun hujan.   Kata kunci: Penakar hujan eksisting, Rasionalisasi hidrologi, penakar hujan efektif dan efisien   ABSTRACT: The Development of water resources requires hydrological analysis based on rainfall data, discharge data, and correct climate data, to produce an effective, efficient water resources planning, research and management. To determine the ideal number of rain gauge station and its ideal distribution, it is necessary to analyze rationalization of World  Meteorological Organization (WMO) method, Kagan Roda method and score method. In the 233 Ha DAS Rondoningo  has been installed 8 rain gauge stations. According to WMO method analysis it is considered to be too tight. Based on the rationalization of the Kagan Roda method and the Score method only 3 rain gauge stations are maintained, while 5 rain gauge stations should be closed . The rain desing of the Gumbel  methodand Log Person III method, based on rain data between 8 rain gauge stations and from 3 rain gauge stations, resulted in a small difference of 8mm to 10 mm. This confirms that in the Rondoningo basin there is no need to install 8 stations, but only 3 rain gauge stations are enough to install. Key words: existing rain gauge, hydrological rationalization, rain gauge effective and efficient.
ANALISA EROSI DAN SEDIMENTASI BERBASIS SISTEM INFORMASI GEOGRAFIS (SIG) PADA BAGIAN HULU DAS CILIWUNG KABUPATEN BOGOR JAWA BARAT Razianto, Muhamad Zakaria; Suhartanto, Ery; Fidari, Jadfan Sidqi
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK : Aktivitas alih fungsi lahan yang tidak sesuai dengan arahan fungsi kawasan berdampak buruk bagi ekosistem pada DAS Ciliwung. Bencana longsor, pendangkalan pada dasar sungai akibat sedimentasi dan banjir dengan kandungan lumpur pada bagian hilir sering terjadi pada DAS Ciliwung. Untuk menyelesaikan masalah-masalah yang terjadi pada DAS Ciliwung perlu dilakukan usaha konservasi dengan metode tata guna lahan baru (skenario) dan penentuan lokasi checkdam pada bagian Hulu DAS Ciliwung. Penelitian dengan model ArcSWAT 2012 bertujuan untuk menghitung besarnya limpasan, erosi dan sedimentasi yang terjadi pada DAS Ciliwung Hulu. Proses kalibrasi menggunakan tahun 2007, 2011, 2013, verifikasi pada tahun 2014 dan hasil eksisting pada tahun 2015. Hasil simulasi pada kondisi eksisting menunjukan besarnya limpasan rata – rata 140.84 mm/tahun, erosi rata – rata 66.28 ton/ha/tahun dan sedimentasi rata – rata 43143.41 m3. Kondisi tersebut menunjukkan tingkat kekritisan lahan pada DAS Ciliwung Hulu dengan kriteria semi kritis seluas 925.47 ha (6.31% luas DAS), kritis seluas 8662.5 ha (57.37% luas DAS) dan super kritis seluas 5510.88 ha (36.5% luas DAS). Dengan usaha konservasi tata guna lahan baru dalam kurun waktu 15 tahun dapat menurunkan limpasan sebesar 30.51%, erosi sebesar 54.69% dan sedimentasi 66.55%. Dalam kurun waktu 1 tahun efektivitas penanganan sedimentasi dengan usaha konservasi tata guna lahan baru (skenario) sebesar 4.36% dan checkdam sebesar 8.56%.   Kata kunci : Perubahan tata guna lahan, ArcSWAT 2012, Limpasan, Erosi, Sedimentasi   ABSTRACT : The activity of land conversion which was not in accordance with the direction of the function of the area has a negative impact on the ecosystem in Ciliwung Watershed. The landslide, sedimentation at the bottom of the river due to silting and flooding with mud content on the downstream often occurred in Ciliwung Watershed. To solve the problems occurring in Ciliwung Watershed, conservations should be carried out with new land use methods (scenarios) and determination of checkdam sites in the upstream of Ciliwung Watershed. ArcSWAT 2012 model is used in aims to calculate the amount of runoff, erosion and sedimentation occurred in upstream of Ciliwung Watershed. Land use in 2007, 2011 and 2013 were used for the calibration, verification process was done with 2014 and 2015 was used for the existing result. Simulation results on existing conditions shows an average runoff rate of 140.84 mm/year, average erosion rate of 66.28 ton/ha/year and average sedimentation rate of 43143.41 m3. The condition showed the critical level of land in upper watershed of Ciliwung with semi – critical criteria covering 925.47 ha (6.31% of watershed area), critical area of 8662.5 ha (57.37% of watershed area) and super critical area of 5510.88 ha (36.5% of watershed area). With the conservation of new land use within 15 years could decrease runoff by 30.51%, erosion of 54.69% and sedimentation 66.55%. within a period of 1 year the effectivity of handling sedimentation with new land use conservation (scenarios) of 4.36% and checkdam of 8.56%.  Keywords: Land use changes, ArcSWAT 2012, Watershed, Run off, Erosion, Sedimentation
STUDI TINJAUAN KELAYAKAN EMBUNG GROJOGAN DESA PLANDAAN KECAMATAN PLANDAAN KABUPATEN JOMBANG Hartanto, Tomy Dwi; Rispiningati, Rispiningati; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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The need for clean water to support human activities continues to increase due to an increasing in population and irrigation needs. Dams and small dam can be an alternative for water management to correct water in the rainy season and being in the dry season. The purpose of Grojogan’s small dam construction is for irrigation of paddy fields in Plandaan sub-district. The greater the water corrected from small dam, the greater its contribution to the profitability of the agricultural system so as to know the magnitude of the carrying capacity of the small dam on the agricultural cropping pattern in the irrigation area. The purpose of this research is to know the magnitude of bearing capacity of small dam on agricultural cropping pattern both economically, socially, and environment. The method used is descriptive analytics. Data are collectied by interview, observation and documentation study. In this research of initial feasibility studies, water balance, and economic analysis. The result of the research shows that the water balance in Grojogan’s small dam is positive, meaning that the water debit that can be accommodated in the small dam is able to supply the irrigation water requirement for 86 Ha, land. The result of economic analysis with usage age for 10-year small dam found the benefit-cost ratio (B / C) ratio = 3.096, while the benefit difference is Rp. 9.858.913.731,21, and the internal rate of return is 36.35%. In the calculation of sensitivity analysis it is found that with the change of values ​​up to 20%, the project is still safe under the value fluctuations.
STUDI KELAYAKAN BANGUNAN PENANGGULANGAN BANJIR DI SUNGAI MUJUR DESA TEMPEH TENGAH KECAMATAN TEMPEH KABUPATEN LUMAJANG Tri Admaja, Septyan Cahya; Wicaksono, Prima Hadi
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Gunung Semeru merupakan salah satu gunung api paling aktif di Indonesia yang terletak di antara wilayah administrasi Kabupaten Malang dan Lumajang. Produk letusan utama dari Gunung Semeru adalah lontaran material pijar, guguran awan panas dan lahar di musim hujan masuk ke sungai-sungai yang berhulu di Gunung Semeru diantaranya adalah Sungai Mujur. Daerah Aliran Sungai Mujur memliki luas DAS 208,31 km2. Kondisi dinding penahan (revetment) di Sungai Mujur Desa Tempeh Tengah, Kecamatan Tempeh Kabupaten Lumajang kapasitas dan kualitasnya sudah banyak berkurang seperti di hulu Dam Soponyono tanggul sisi kiri jebol. Upaya penangggulangan banjir direncanakan dengan menggunakan dinding penahan/revetment. Analisa profil aliran dilakukan dengan menggunakan software HEC-RAS 4.1.0, sedangkan untuk analisa stabilitas lereng revetment menggunakan Metode Fellenius. Perencanaan pengendali banjir Sungai Mujur menggunakan debit banjir rancangan Q25 th yaitu sebesar 192,98 m3/dt. Pada kondisi eksisting ditemukan 3 patok cross section yang meluber. Hasil analisa perencanaan bangunan revetment didapat II alternatif perencanaan. Alternatif I dengan tinggi revetment 3,7 m di hulu Dam Soponyono dan 4,6 m di hilir Dam Soponyono dengan kondisi penampang sungai asli. Untuk Alternatif II dengan tinggi revetment 3,2 m di hulu Dam Soponyono dan 4,6 m di hilir Dam Soponyono dengan dilakukan normalisasi pada penampang sungai. Kata kunci: Banjir, HEC-RAS, stabilitas, dinding penahan, revetment Mount Semeru is one of the most active volcanoes in Indonesia, located between the administrative areas of Malang and Lumajang Regencies. The main eruption product from Mount Semeru is a burst of incandescent material, hot clouds and lava in the rainy season into the rivers that headed at Mount Semeru include the Mujur River. Mujur watershed has an area of  208.31 km2. The condition of retaining  wall in Mujur River of Tempeh Tengah Village, Tempeh Sub-district of Lumajang Regency, its capacity and its quality have decreased as much as in the upstream Dam Damonyono dam. Efforts to control floods are planned using retaining walls. Flow profile analysis was performed using HEC-RAS 4.1.0 software, while for stability analysis of revetment slope using Fellenius Method. Planning for flood control of the Mujur River uses a flood discharge of Q25th design which is 192.98 m3/sec. In the existing conditions found 3 cross section stakes that overflow. The results of the analysis of the planning of the revetment building obtained II alternative planning. Alternative I with a 3.7 m high revetment upstream of Soponyono Dam and 4.6 m downstream of Soponyono Dam with the original river cross section. For Alternative II with high revetment 3.2 m upstream of Soponyono Dam and 4.6 m at downstream of Soponyono Dam by normalization at river cross section.  Key words: Flood, HEC-RAS, stability, retaining wall, revetment
STUDI EVALUASI KELAYAKAN SISTEM INSTALASI PENGOLAHAN AIR LIMBAH (IPAL) RUMAH POTONG HEWAN (RPH) GADANG KABUPATEN MALANG yuriski, ryan isra'; haribowo, riyanto; sholichin, moh.
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: Total limbah yang dihasilkan peternakan dan proses penguraian menjadi faktor dalam kelayakan sistem IPAL. Lokasi studi di Rumah Potong Hewan Gadang, Malang. dengan melihat kandungan BOD, COD, TSS, Minyak&Lemak, NH3-N serta pH pada IPAL serta mengevaluasi kelayakan eksisting IPAL dan prosesnya. Kemudian dibandingkan dengan baku mutu air limbah dalam PermenLH No.02 Tahun 2006. Hasil proyeksi debit 10 tahun kedepan dengan memprediksi efektifitas daya tampung IPAL. Debit yang dihasilkan pada proses pemotongan tersebut sekitar ±158,014 m3/hari dengan jumlah per sapi sekitar 4,515 m3/ekor/hari sebanyak ±35ekor/hari tahun 2017. Setelah pengolahan IPAL, limbah cair menuju sungai yang berada ±200m dari lokasi RPH. Hasil tersebut sebagai acuan untuk 2018-2027, Debit tersebut melebihi batas maksimum dalam Baku Mutu limbah sapi yaitu 1,5 m3/ekor/hari. Pada IPAL terdapat dua parameter diambang batas yaitu Minyak&Lemak dan COD disebabkan parameter yang masih belum terurai. Pada bak pengendap tidak ada alat atau desain guna  mengurangi kadar parameter dan tidak efektifnya bak pemisah lemak. Untuk mengoptimalkan proses pengolahan, kondisi eksisting perlu dilakukan perbaikan atau perluasan pada bak minyak dan lemak agar kinerja bak selanjutnya bekerja maksimal dan mengalihfungsikan bak disinfektan dikarenakan ada bak biofilter yang fungsinya lebih efisien dan tampungan lebih luas.   Kata kunci: Pengolahan IPAL,Pemotongan Hewan,Evaluasi Kelayakan IPAL, Efisiensi Sistem IPALABSTRACT: The total waste generated by the farm and the decomposition process is a factor in the feasibility of the WWTP system. Study locations at Gadang Animal House, Malang. by looking at the content of BOD, COD, TSS, Oil & Fat, NH3-N as well as pH at WWTP as well as evaluating the feasibility of existing WWTP and its process. Then compared with the quality standard of waste water in PermenLH No.02 Year 2006. The result of debit projection 10 years ahead by predicting the effectiveness of the capacity of WWTP. The discharges produced at the cutting process are approximately ± 158,014 m3 / day with the number of cows per 4.515 m3 / head / day as much as ± 35k / d in 2017. After the processing of WWTP, the wastewater into the river is ± 200m from the RPH location. The result is as a reference for 2018-2027, the Debit exceeds the maximum limit in Cash Waste Quality Standard which is 1.5 m3 / head / day. In the IPAL there are two parameters at the boundary that is Oil & Fat and COD due to parameters that still have not decompose. In a sedimentary tub there is no tool or design to reduce the level of parameters and ineffectiveness of the fat separator. To optimize the process of processing, the existing condition needs to be repair or extension on the tub oil and fat for subsequent maximum performance of the tub and disinfectant tube functioning because there is a biofilter tub that function more efficient and wider. Key words: IPAL Processing, Animal Cutting, IPAL Feasibility Evaluation,Efficiency of WWTP                    System  ABSTRACT: The total waste generated by the farm and the decomposition process is a factor in the feasibility of the WWTP system. Study locations at Gadang Animal House, Malang. by looking at the content of BOD, COD, TSS, Oil & Fat, NH3-N as well as pH at WWTP as well as evaluating the feasibility of existing WWTP and its process. Then compared with the quality standard of waste water in PermenLH No.02 Year 2006. The result of debit projection 10 years ahead by predicting the effectiveness of the capacity of WWTP. The discharges produced at the cutting process are approximately ± 158,014 m3 / day with the number of cows per 4.515 m3 / head / day as much as ± 35k / d in 2017. After the processing of WWTP, the wastewater into the river is ± 200m from the RPH location. The result is as a reference for 2018-2027, the Debit exceeds the maximum limit in Cash Waste Quality Standard which is 1.5 m3 / head / day. In the IPAL there are two parameters at the boundary that is Oil & Fat and COD due to parameters that still have not decompose. In a sedimentary tub there is no tool or design to reduce the level of parameters and ineffectiveness of the fat separator. To optimize the process of processing, the existing condition needs to be repair or extension on the tub oil and fat for subsequent maximum performance of the tub and disinfectant tube functioning because there is a biofilter tub that function more efficient and wider.  Key words: IPAL Processing, Animal Cutting, IPAL Feasibility Evaluation,Efficiency of WWTP                     System
Perencanaan Pembangkit Listrik Tenaga Mikrohidro di Waduk Tukul Pratiwi, Tami; Juwono, Pitojo Tri
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

ABSTRAK: Pembangunan Waduk Tukul yang terletak di Desa Karanggede, KecamatanArjosari, Kabupaten Pacitan. Waduk Tukul memiliki fungsi sebagai kebutuhan air bakusebesar 300 liter/ detik. Kebutuhan air baku pada Kabupaten Pacitan sebesar120liter/orang/hari. Maka air baku pada Waduk Tukul mampu melayani 216.000 orang. Selainitu, pada tahap kedua Waduk Tukul juga dimanfaatkan sebagai Pembangkit Listrik TenagaMikrohidro. Kebutuhan listrik pada Kab. Pacitan masih belum terpenuhi, sekitar 32% daripenduduk Pacitan tidak mendapatkan listrik. Ada sekitar 2000 KK yang belum mendapatkanlistrik. Walaupun, hal ini telah didukung dengan Pembangkit Listrik Tenaga Udara kebutuhanini masih belum terpenuhi. Pada studi ini didapatkan nilai debit outflow sebesar 1 m3/ dtsebagai dasar perencanaan untuk Pembangkit Listrik Tenaga Mikrohidro pada Waduk Tukul,Pacitan. Dengan tinggi jatuh pada perencanaan ini sebesar 60,12 meter. Pipa pesat yangdigunakan pada perencanaan pembangkit listrik tenaga mikrohidro Waduk tukul diameter 0,70meter berbahan weelded steel dan panjang 214,82 meter. Turbin yang digunakan di lapanganadalah turbin francis. Daya yang dihasilkan pada Pembangkit Listrik Tenaga MikrohidroWaduk Tukul adalah 2 x 0,227 MW. Dalam perhitungan analisa kelayakan ekonomi pada studiini meliputi BCR, NPV, IRR, Analisa sesnsitivitas dan Payback Periode. Nilai dari parametertersebut adalah sebagai berikut BCR = 1,25,NPV = Rp 9.088.552.693,94, IRR = 10,21%, danPayback Periode = 16 tahun.Kata Kunci: PLTMH, Waduk, Turbin Francis, Daya Listrik, Kelayakan EkonomiABSTRACT: Construction of Tukul Reservoir located in Karanggede Village, ArjosariDistrict, Pacitan Regency. Tukul Reservoir has a function as raw water requirement of 300liters / sec. Raw water needs in Pacitan Regency are 120 liters / person / day. So the raw waterin Tukul Reservoir is able to serve 216.000 people. In addition, in the second phase the TukulReservoir is also used as a Micro-hydro Power Plant. Electricity needs in Kab. Pacitan is stillnot met, around 32% of Pacitan residents do not get electricity. There were around 2000families who had not received electricity. Although, this has been supported by the Air PowerPlant this need is still not met. In this study, the value of outflow discharge is 1 m3 / sec as abasis for planning for Microhydro Power Plant in Tukul Reservoir, Pacitan. With a head grossin this plan amounting to 60.12 meters. Penstock used in micro hydro power plant planningReservoir tukul diameter 0.70 meters made of weelded steel and length 214.82 meters. Theturbine used in the field is the French turbine. The power generated at the Tukul Tube MicroHydro Power Plant is 2 x 0.227 MW. In the calculation of economic feasibility analysis in thisstudy include BCR, NPV, IRR, sensitivity analysis and payback period. The values of theseparameters are as follows BCR = 1.25, NPV = Rp. 9,088,552,693.94, IRR = 10.21%, andPayback Period = 16 yearsKeywords: MHPP, Reservoir, Francis Turbine, Electric Power, Economic Feasibility
PERENCANAAN GROUNDSILL PADA SUNGAI TINGA-TINGA DESA TUKAD TINGA-TINGA KECAMATAN GEROKGAK KABUPATEN BULELENG BALI Tungga, Anand Wijaya; Asmaranto, Runi; Suprijanto, Heri
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.689 KB)

Abstract

Sungai Tinga-Tinga adalah salah satu sungai yang terletak di Kabupaten Buleleng, sungai Tinga-Tinga ini tergolong sungai intermitten. Sungai Tinga-Tinga memiliki luas sub-DAS sebesar 5,7 km2 ˛dengan panjang sungai ± 5,93 km. Kondisi yang terjadi pada Sungai Tinga-Tinga yang sering banjir cukup mengganggu sarana dan prasarana di sekitar sungai, terlebih air yang menggerus tepi sungai. Perhitungan hidrologi menggunakan metode Hidrograf Satuan Sintetis Nakayasu dengan besar debit Q25th 23,97 m3/dt yang akan digunakan untuk analisa banjir rancangan dan desain groundsill, analisa Transport Sediment menggunakan Metode Einstein didapatkan jumlah sedimen yang melintas sebesar 23399,71 m3 /tahun sedangkan untuk analisa banjir akan di running dengan menggunakan software HECRAS 5.0.3. Berdasarkan perhitungan yang telah dilakukan, maka direncanakan bangunan groundsill. Dengan lebar pelimpah 14 m, tinggi main dam 1,5 m, kedalaman pondasi 1,5 m, dan tebal mercu main dam 1,5 m.Kata kunci : GroundSill, Sungai Tinga-Tinga, Banjir, Hec-Ras. Tinga-Tinga River is one of the existing rivers located in the Buleleng district, this river is classified of intermittent river. Catchment Area of Tinga-Tinga River is 5,70 km2 with length of this river is ± 5,93 km. Condition of Tinga-Tinga River was flooded frequently which quite disturb facilities and infrastructures around the river, the water activity scoured the river banks. Hydrology calculation was used the Synthetic Unit Hydrograph of Nakayasu method with large discharge Q25th 23,97 m3 /sec to be used for analysis flood design and will used to design the groundsill, analysis of transport sediment was used Einstein Method and obtained the number of the sediment load that is passed the Tinga-Tinga river as much as 23399,71 m3 /year and analysis for flood will be running using HECRAS 5.0.3. Based on the calculation, the groundsill designed dimension as follows with weir width 14 m, main dam height 1,5 m, depth footing 1,5 m, and main dam thickness 1,5 m.Keyword: Groundsill, Tinga-Tinga River, Flood, Hec-Ras

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