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PEMANFAATAN BETON POROS RECYCLE AGREGAT SEBAGAI MEDIA FILTRASI AIR LIMBAH DOMESTIK MCK TERPADU KELURAHAN TLOGOMAS KOTA MALANG Gunawan, Alif Ramadhani Medisia Putri; Cahya, Evi Nur; Yuliani, Emma
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 1 (2017)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: Keterbatasan dana dan lahan merupakan masalah sebuah perkotaan dalam pembangunan IPAL. Maka dari itu, kelurahan Tlogomas membangun MCK Terpadu untuk mengatasi limbah domestik dikelurahan tersebut. Penelitian ini bertujuan untuk mencari efisiensi beton poros sebagai media filtrasi air limbah domestik menggunakan model IPAL. Recycle agregat yang digunakan bertujuan untuk mendaur ulang kembali beton yang sudah tidak terpakai. Beton poros yang digunakan adalah NCA (Normal Coarse Aggregate) berasal dari krikil alami, RCA (Recycle Coarse Aggregate) dan campuran NCA RCA. Agregat yang digunakan berukuran 0.5-1, 1-2, 0.5-2. Void ratio diuji dengan menimbang berat fresh concrete. Pengujian permeabilitas menggunakan metode Falling Head pada beton kering yang berumur 28 hari. Model disekat oleh dua beton dengan tebal 5 cm setiap 30 cm dengan debit 2lt/menit. Sampel hasil percobaan diambil setiap akhir percobaan pada jam ke 3. Nilai BOD, COD dan TSS tereduksi paling besar pada percobaan 50%RCA50%NCA0.5-2 sebesar 90.97%, 89.59% dan 86.35%. Amoniak tereduksi paling besar pada percobaan 100%NCA0.5-1 sebesar 14.51%, minyak dan lemak dan total coliform tidak dapat tereduksi dengan metode ini. Beton poros paling efisien digunakan adalah 50%RCA50%NCA 0.5-2 dengan nilai void ratio 5.940% dan permeabilitas 7.332 mm/s. Kata Kunci: Beton Poros, Air Limbah Domestik, Model IPAL ABSTRACT: Limited funds and land is a problem process to build waste water treatment plant in the city. Because of that, Tlogomas subdistric was build the intregeted wastewater treatment plant to resolving the problems from domestic water. The aimed from this research was finding the eficiency of pervious aggregate as filtration media of domestic wastewater was using wastewater treatment plant model. Recycle aggregate was used, because it has function to reuse concrete from building demolished. The aggregate that used is NCA (Normal Coarse Aggregate) derived from natural aggregate, RCA (Recycle Coarse Aggregate) and mix of NCA RCA. The aggregate that used is 0.5-1, 1-2, 0.5-2. The void ratio was tested by weighing fresh concrete weight. The permeability test was used the Falling Head method on a 28-day-old dry concrete. The model was divided become three parts by two concretes with a thickness of 5 cm with a discharge was 2lt / min. Samples from this experiment are taken by 3 hours in the end of experiment. In the other hand the values of BOD, COD and TSS reduction were 90.97%, 89.59% and 86.35%. There are were highest result of these reductions. Ammonia was highest reduced 14.51% in a 100% NCA 0.501 experiment, oil and greasse and total coliform could not be reduced by physic method (Said,2017). The most efficient pervious concrete used is 50% RCA50% NCA 0.5-2 with the value of void ratio and permability is 5.940% and 7.332 mm/s. Keywords :Pervious Concrete, Domestic Waste Water, Waste Water Treatment Plant Model.

PENGEMBANGAN DAN ANALISA EKONOMI DALAM PENENTUAN HARGA AIR PADA SISTEM JARINGAN DISTRIBUSI AIR BERSIH SUMBER MATA AIR TAMAN LAKE’ KECAMATAN KOTA SUMENEP Rahmi, Nuri Aisyah; Ismoyo, M.Janu; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: Sumber Taman Lake’ merupakan sumber yang dikelolah oleh PDAM Kabupaten Sumenep dengan melayani tujuh desa yaitu Pajagalan, Pabian, Marengan Daya, Marengan Laok, Kertasada, Kalianget Barat dan Kalianget Timur. Debit sumber ini sebesar 90 liter/detik. Pada tahap pengembangan dilakukan penambahan perencanaan jaringan di daerah Kalianget Timur dan perencanaan menara air dengan tinggi 5m dan dimensi tandon ukuran 5m x 5m x 4m untuk mengurangi tekanan dalam pipa. Hasil simulasi menggunakan WaterCAD v8i diperoleh nilai kecepatan 0,1 m/s -0,55 m/s, tekanan 2atm-3atm dan headloss gradient 0,057 m/km -1,347 m/km. Rencana Anggaran pada studi ini sebesar Rp1.800.238.841. Hasil ekonomi diperoleh harga air Break Event Point yaitu Rp.2.510-/m3 dengan payback period 6,02 tahun. Harga air Benefit Cost Ratio = 1,12 yaitu Rp.2.800-/ m3 dengan payback period 10,29 tahun. Kata Kunci :pengembangan jaringan pipa ,perencanaan jaringan pipa,WaterCAD v8i,analisa ekonomi

STUDI PERENCANAAN DISTRIBUSI AIR BERSIH DI KECAMATAN LUMBANG KABUPATEN PASURUAN MENGGUNAKAN PROGRAM WATERGEMS V8I Kurniawan, Dita Cahya; Sholichin, Moh.; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK : Meningkatnya pertumbuhan penduduk dan pembangunan berbanding lurus dengan kebutuhan air. Dengan bertambahnya jumlah penduduk yang semakin banyak maka bertambah pula tuntutan akan ketersediaan air tersebut. Lumbang merupakan kecamatan yang kekurangan air bersih, hal ini disebabkan jauhnya sumber air dari penduduk. Dari permasalahan tersebut maka perlu adanya pembangunan sarana penunjang distribusi air bersih yang baik agar kebutuhan air bersih di Kecamatan Lumbang terpenuhi. Tujuan dari kajian ini adalah mengetahui kondisi sistem jaringan air bersih eksisting, debit kebutuhan air bersih hingga tahun 2035, memperoleh sistem jaringan air bersih yang memadahi, kondisi hidrolis pada sistem jaringan, Rencana Anggaran Biaya untuk pembangunan sistem jaringan dan hasil analisa ekonominya. Dari kajian ini diketahui bahwa jaringan eksisting tidak dapat digunakan untuk perencanaan sebab berbagai sarana yang kurang memadai maka perlu pembuatan sistem jaringan baru. Besar debit sumber sebesar 85 l/dtk dan kebutuhan air rata-rata tahun 2035 sebesar 33,56 l/d. Simulasi perencanaan jaringan menggunakan program WaterGEMS V8i dan berjalan sesuai dengan rencana. Hal ini dapat dilihat dari kondisi tekanan, kecepatan dan headloss gradient pada jaringan yang sudah sesuai dengan syarat perencanaan jaringan air bersih. Dari segi Rencana Anggaran Biaya, perencanaan ini membutuhkan biaya sebesar Rp 18.962.273.024,01 dan dengan hasil Analisa Ekonomi yang dilakukan didapatkan Benefit Cost Ratio sebesar 1,11 maka dapat dikatakan bahwa proyek ini layak secara ekonomi. Kata Kunci : Air bersih, sistem jaringan, simulasi, rencana anggaran biaya, analisa ekonomi ABSTRACT : Increasing of development and population growth is directly proportional to the water demand. The growing number of population then the demand for water availability is increasing. Lumbang is a district that are lack of clean water, due to the far water source from residents. From these problems, it is necessary to build a supporting facility for better distribution of clean water so that the needs of clean water in Lumbang District can be fulfilled. The purpose of this study is to know the existing condition of clean water network system, knowing the clean water discharge needs until year 2035, get a compact clean water network system, know the hydraulic conditions on the network system, Budget Plan for the construction of network systems and know the results of the economic analysis. From this study is known the excisting network with less complicated can not be used for this planning due to various facilities, so that requires a new network system. The source of discharge amounted to 85 l/s and the average water requirement of 2035 by 33.56 l/s. The network planning simulation uses the WaterGEMS V8i program and runs as planned. This can be seen from the conditions of water pressure, velocities and headloss gradient on the network that is in accordance with the requirements of water network planning. In terms of Budget Plan, this planning costs Rp 18,962,273,024,01 and with the result of Economic Analysis conducted obtained the Benefit Cost Ratio of 1.11 it can be said that the project is economically feasible. Keywords : Clean water, network system, simulation, cost budget plan, economic analysis

ANALISIS KADAR OKSIGEN TERLARUT DALAM ALIRAN PADA SISTEM BANGUNAN PELIMPAH BENDUNGAN RIAM KIWA Rosamike, Mega Okvita Karinda; Dermawan, Very; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK :Penelitian ini bertujuan untuk menentukan perubahan nilai oksigen terlatut dalam aliran sebagai efek dari baffled chute pelimpah bendungan Riam Kiwa. Metode perhitungan kadar udara dalam aliran teoritis didasarkan penelitian terdahulu. Konsentrasi udara dipengaruhi oleh beberapa faktor antara lain: (a) faktor kedalaman, kecepatan, Froude dan kekasaran saluran. (b) sudut kemiringan dan debit. (c) sudut kemiringan. Untuk kondisi (a) nilai terbesar sebelum peluncur 14,371 dan nilai terkecil 0,000041, untuk nilai terbesar di peluncur 0,051083 pada Q2 di seri III dan IV dan nilai terkecil 0,000035 pada Q100 di seri III. (b) nilai konsentrasi udara teoritis terbesar 0,5305 menurut ASCE pada debit Q2 dan niali terkecil 0,2752 menurut Straub-Anderson pada debit Q1000. (c) konsentrasi udara teoritis terbesar adalah 0,4124 oleh Hager. Hasil pengukuran dilapangan Q2 mengalami peningkatan terbesar pada seri I 1,0258%, dan yang mengalami penurunan pada Q100 untuk original design -0,0516%. Untuk nilai rasio defisit r15 yang terbesar pada Q1000 dengan nilai sebesar 3,4615 dan yang terkecil pada Q2 sebesar 2,3676. Dan untuk nilai efisiensi transfer Jika nilai r20 > 10 maka nilai E20 sebesar 1. Jika nilai r20 < 10 maka nilai E20 0,9. Kata kunci: Kadar Oksigen (DO), Buffled Chute, Aerasi ABSTRACK: The aim of this study is to determine the change of dissolved oxygen in the flow as the effect of baffled chute in the chuteway of Riam Kiwa Dam. The calculation method of the air concentration in flow is based on formulation of previous research. Air concentration is influenced by some factors, in term (a) factor, velocity, Froude and channel roughness. (b) slope and discharge. (c) slope. For condition in term (a) the largest value before the chuteway is 14,371 and the smallest value is 0.000041, for the largest value in chuteway is 0.051083 in Q2 in series III and IV, the smallest value is 000035 in Q100 in series III. (b) the largest theoretical air concentration value is 0.5305 according to ASCE at the discharge of Q2 and the smallest is 0.2752 according to Straub-Anderson at discharge Q1000. (c) the largest theoretical air concentration is 0.4124 by Hager. The results of field measurements Q2 experienced the largest increase in serial I 1.0258%, and that decreased in Q100 for the original design -0.0516%. For the largest r15 deficit ratio rate at Q1000 with a value of 3.4615 and the smallest in Q2 at 2.3676. And for the value of the transfer efficiency If the value of r20 < 10 then the rate of E20 is 1. If the rate of r20 < 10 then the rate is E20 0.9. Keywords: Dissolved Oxygen, Baffled Chute, Aeration

Analisis Reduksi Genangan Pada Saluran Drainase Di Pesisir Kota Palu Yang Berwawasan Lingkungan (Analysis Of Inundation Reduction In Drainage Channel At Coastal Palu City With Environmental Insight) Romadona, Irenne Ismayanti; Andawayanti, Ussy; Cahya, Evi Nur
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 10, No 1 (2019)
Publisher : Fakultas Teknik, Universitas Brawijaya

When the rainy season arrives inundation occurs in some areas in Palu, the capital city of Central Sulawesi. Itâ€™s due to rapid development, outdated drainage systems, high level of sedimentation and the topographic condition. Solutions to overcome the problem are rehabilitating existing drainage, rainwater harvesting, gully plug and temporary storage pond equipped with automatic valve door. Rehabilitation is done by increasing the depth of existing drainage. For rainwater harvesting, the rain barrels capacity varies from 350 - 1050 liters equipped with storage well. By combining the rehabilitation and rainwater harvesting, the effectiveness of inundation reduction in DTA 1 93,5% and in DTA 2 99,6%. For gully plug, each size of gully plug is set to fit the width of channel. The effectiveness of inundation reduction 81% in DTA 1 and 98,9% in DTA 2. The budget plan for rainwater harvesting between Rp. 1.492.505,- to Rp. 2.692.505,- depending on rain barrel capacity. For gully plug between Rp. 556.000,- to Rp. 808.000,- depending on the size of gully plug. Combination of rehabilitation, temporary storage pond equipped with automatic valve door also rainwater harvesting was chosen because the effectiveness of greater reduction and maintenance of rainwater harvesting was much easier

PENGENDALIAN EROSI DAN SEDIMEN DENGAN ARAHAN KONSERVASI LAHAN DI DAS GENTING KABUPATEN PONOROGO Dianasari, Qodriah; Andawayanti, Ussy; Cahya, Evi Nur
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 9, No 2 (2018)
Publisher : Fakultas Teknik, Universitas Brawijaya

Abstrak: Daerah Aliran Sungai (DAS) Genting terletak di Kabupaten Ponorogo Propinsi Jawa Timur. Pertambahan penduduk di DAS Genting berakibat pada perubahan fungsi lahan. Analisis pengendalian erosi dan sedimen dengan arahan konservasi lahan di DAS Genting diperlukan guna meminimalkan permasalahan pada lokasi tersebut. Pendugaan laju erosi dan sedimen dihitung menggunakan model AVSWAT 2000. Hasil pada model tersebut menunjukkan besar limpasan permukaan 94.437 mm/thn, erosi sebesar 49,189 ton/ha/th Â dan sedimentasi sebesar 6.525,440 ton/th. Dari hasil perhitungan yang telah dilakukan DAS Genting memiliki 5 kategori tingkat bahaya erosi, diantaranya tingkat bahaya erosi sangat ringan sebesar 43,346%, ringan sebesar 36,773%, sedang sebesar 5,859%, dan berat sebesar 10,638%, dan sangat berat sebesar 3,384% terhadap luas DAS Genting. Untuk mengendalikan tingkat bahaya erosi tersebut dilakukan upaya konservasi secara vegetatif dengan merubah tutupan lahan perkebunan/tegalan/semak belukar ditanami tanaman keras, sehingga yang mampu mereduksi erosi sebesar 21,634% dan secara mekanis dilakukan dengan pembuatan chekdam yang mampu mereduksi sedimen sebesar 16,67%.Â Kata Kunci: AVSWAT 2000, Limpasan Permukaan, Erosi, Sedimen, Tingkat Bahaya Erosi, KonservasiÂ Abstract: Genting Watershed is located in Ponorogo District East Java Province. The Growth of Population in Genting Watershed resulting in a changes to the land function. Analysis about Sediment and erosion control with the purpose of land conservation in Genting Watershed very needed to minimalize the problems which occured in Genting Watershed. An estimation about the rate of erotion and sedimentation conducted and modeled with AVSWAT 2000. The result showed that the amount of surface run off is 94.437 mm/year, erosion is 49.189 ton/ha/year and sedimentation is 6525.440 ton/year. From the result of the analysis, Genting Watershed has 5 categories of erosion hazardous level, the estimated amount for each erosion category against the Genting watershed area are very low erosion level 43.346%, Low erosion level 36.773%, moderate erosion level 5.859%, dan high erotion level 10.638%, and very high erotion level 3.384%. To control the erosion hazardous level, a vegetatif conservation conducted by converting the land cover resulted in 21.634% erosion reduction and 16,67% erotion reduction from the construction of checkdam.Â Keyword: AVSWAT 2000, surface runoff, erosion, sedimentation, Erosion Hazard Level, conservation.

PENGELOLAAN DRAINASE SECARA TERPADU UNTUK PENGENDALIAN GENANGAN DI KAWASAN SIDOKARE KABUPATEN SIDOARJO Guntoro, Dani Eko; Harisuseno, Donny; Cahya, Evi Nur
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 8, No 1 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

ABSTRAK: Banjir dan genangan di Kabupaten Sidoarjo telah menjadi permasalahan tahunan yang serius. Penelitian ini mengkaji mengenai pengelolaan drainase secara terpadu untuk pengendalian banjir dan genangan di Kawasan Sidokare, dengan pola kombinasi tertentu, yang meliputi desain saluran drainase, kolam tampungan dan pompa. Kawasan Sidokare terbagi menjadi tiga DTA, yaitu DTA Pintu Air Sepande, DTA Rumah Pompa Sidokare dan DTA Pintu Air Jl. Diponegoro. Rumus Mononobe digunakan untuk menghitung intensitas hujan dengan kala ulang tertentu. Curah hujan rancangan dihitung dengan metode Log Pearson Tipe III. Dari hasil analisis, banjir historis di Kawasan Sidokare disebabkan oleh curah hujan kala ulang 1,01 tahun dengan intensitas hujan 17,55 mm/jam. Upaya penanganan melalui pengelolaan drainase secara terpadu pada masing-masing Daerah Tangkapan Air (DTA) di Kawasan Sidokare, dapat mereduksi banjir hingga 100%. Penanganan untuk DTA Pintu Air Sepande meliputi kombinasi saluran drainase eksisting dan kolam tampungan, DTA Rumah Pompa Sidokare menggunakan kombinasi saluran drainase eksisting, kolam tampungan dan pompa banjir eksisting, sedangkan DTA Pintu Air Jl. Diponegoro dilakukan dengan kombinasi saluran drainase eksisting, saluran tersier baru dan pompa banjir baru.Â Kata kunci: pengelolaan drainase secara terpadu, banjir,Â genangan, reduksi banjir.Â ABSTRACT: Flood and inundation in Sidoarjo Regency had become an annual serious problem. This research has an objective to apply an integrated drainage management to controlling flood and inundation at Sidokare Region, which consists of drainage channelÂ design, retarding pond, and pump design. Sidokare Region is divided into three catchment area, which is Sepande Sluice catchment area, Sidokare Pump House catchment area and Jl. Diponegoro Sluice catchment area. Mononobe formula was used to analyze rainfall intensity during historical floods with several return periods. Design rainfall was analyzed with Log Pearson Type III method. From the analysis, the historical floods in Sidokare Region caused by rainfall with return period of 1,01 years, showed Â the rainfall intensity of 17,55 mm/hour. The implementation of the integrated drainage management at each catchment area of Sidokare Region, can reduce flood up to 100%. The inundation management for Sepande Sluice catchment area comprise with combination of existing drainage channel and a detention pond, Sidokare Pump House catchment area using combination of existing drainage channel, detention pond and the existing flood pump, whereas Jl. Diponegoro Sluice catchment area with a combination of existing drainage channel, a new tertiary channelÂ and the new flood pump.Â Keywords: an integrated drainage management, flood, inundation, flood reduce.

Analisis Struktur Terowongan Pengelak Pada Bendungan Kualu Kabupaten Toba Samosir Provinsi Sumatra Utara Rofikha, Afan Allail; Marsudi, Suwanto; Cahya, Evi Nur
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 10, No 1 (2019)
Publisher : Fakultas Teknik, Universitas Brawijaya

Diversion structure consists of diversion tunnel and Cofferdam. These two contructions should built in the early construction of the dam, have function to divert the river flow during the period of dam construction. The plans of Kualu dam diversion tunnel designed using horseshoe shape F, upstream of the tunnel at a depth of 41.625 m and upstream elevation + 695.5 m. In this study there was flood routing with Q25th which is 709,331 m 3 /s and obtained using 9 m diameter, then a cofferdam is planned to build as high as 15 m. Based on the calculation of loading and calculated four load combinations, they are : after contruction condition, after contruction under earthquake condition, at the operation time condition, and at the operation time under earthquake condition. From the results of the load combinations, the structure was analyzed using Beggs method and Staad Pro method. These two methods were used to figure the maximum moment of the structure and to determine the needed reinforcement in the tunnel construction. After the analysis, it is noticed that there is a difference position of the maximum moment, this is caused by the support in the Beggs method assumed to be a vertical loads.

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