Article Per Year (5 Year)
p-Index From 2019 - 2024
0.23
P-Index
This Author published in this journals
All Journal Jurnal Mahasiswa Jurusan Teknik Pengairan Jurnal Teknik Pengairan: Journal of Water Resources Engineering
Rini Wahyu Sayekti
Jurusan Teknik Pengairan Fakultas Teknik Universitas Brawijaya
Engineering

Published : 21 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 14 Documents
Search
Journal : Jurnal Teknik Pengairan: Journal of Water Resources Engineering

 1   2 
Model-Model Pembangkitan Data Sintetis Untuk Curah Hujan Harian Di Wilayah Brantas Tengah Soetopo, Widandi; Limantara, Lily Montarcih; Sayekti, Rini Wahyu; Purwati, Endang; Chandrasasi, Dian; Ilham, Muhammad; Rahmadi, Agung
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1062.223 KB)

Abstract

This research is for finding the suitable the synthetic data generating model for daily rainfall in the region of Middle Brantas River Basin in the East Java Province. There are 7 models being considered, 4 models for single-site generation, (1) the two-part, model group, (2) the transition probability matrix model group, (3) the resampling model group, and (4) the time series model group, and 3 models for multisite generation, (5) the conditional, model group, (6) the extension of single site Markov chain model group, and (7) the random cascade model group. All of the time-series produced by the daily rainfall synthetic data generation are then tested statistically. The results show that statistically the differences between the historical time series and the synthetically time series are not too significant. It turn out that the multisite model have produced better synthetic time series compared to those which have been produced by the single-site models.Keywords: generating model, synthetic data, daily rainfall.
Studi Efektifitas Penurunan Kadar Bod, Cod dan Nh3 pada Limbah Cair Rumah Sakit dengan Rotating Biological Contactor Sayekti, Rini Wahyu; Haribowo, Riyanto; Vivit, Yohana; Prabowo, Agung
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 2, No 2 (2011)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.637 KB)

Abstract

Rotating Biological Contactor (RBC) adalah suatu proses pengolahan air limbah secara biologis yang terdiri atas disc melingkar yang diputar oleh poros dengan kecepatan tertentu. RBC mempunyai beberapa keuntungan, antPenelitian ini bertujuan untuk mengetahui efektifitas kemampuan reaktor RBC dalam mengolah limbah cair rumah sakit dengan berbagai variasi. Variasi yang digunakan adalah kecepatan putaran disc, yaitu 2 rpm dan 5 rpm serta luas area terendam disc, yaitu 40% dan 70%. Sedangkan sampel yang digunakan adalah air limbah Rumah Sakit Umum Daerah Kepanjen Malang. Parameter yang diteliti adalah BOD, COD, dan NH3.Dari penelitian yang dilakukan, diperoleh hasil bahwa variasi yang paling efektif dalam menurunkan kadar BOD, COD, dan NH3 adalah dengan kecepatan putaran disc 2 rpm dan luas area terendam disc 70% dengan input sampel limbah berbeda untuk setiap variasi percobaan. Prosentase penurunan tertinggi adalah 96,681% untuk BOD, 97,373% untuk COD, dan 96,124% untuk NH3. Kadar BOD, COD dan NH3 effluent memenuhi baku mutu untuk limbah cair rumah sakit sesuai dengan Kep.Gub. No. 61 Tahun 1999 dan memenuhi baku mutu air limbah golongan III yang digunakan untuk mengairi pertanaman sesuai dengan Peraturan Pemerintah Indonesia No. 82 tahun 2001 Tentang Pengolahan Kualitas Air dan Pengendalian Pencemaran Air.Kata kunci : RBC, Penurunan Kadar, BOD, COD, NH3
KAJIAN ALOKASI ANGGARAN BIAYA JARINGAN IRIGASI BERBASIS KINERJA IRIGASI DAN NILAI MANFAAT EKONOMI (STUDI KASUS D.I. PRAMBATAN KOTA BATU) Kesuma, Alex Wahyu; Trijuwono, Pitojo; Sayekti, Rini Wahyu
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 1 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1119.812 KB)

Abstract

There are many factors that determined budget allocation in irrigation network: technical factor, policy, political factor, and local economic capacity to fund an activity.Budget allocation design is conducted by consider priority index factor and budget allocation index based on Budget (RAB) nominal value, irrigation network performance, economic benefit of agricultural activities, and land area of the irrigation network. With Analysis of priority index = 0,05(IRAB) + 0,8(1/IKSI) + 0,1(IME) + 0,05(ILBS), resulted that maintenance activities of JI Prambatan Kanan is the first priority with priority index value 1,334, and JI Prambatan Kiri is second priority with priority index value 1,315. Nominal value of the budget and budgetary plafond for annually costs of irrigation network is considered in the process of allocating budget to the maintenance activities.Keywords: Use value, irrigation, performance
Model Optimasi Alternatif Pola Tanam, untuk Mendapatkan Luas Tanam dan Keuntungan Yang Optimum (Studi Kasus di Dam Jatimlerek, Kabupaten Jombang) Sayekti, Rini Wahyu
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 1, No 2 (2010)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.803 KB)

Abstract

Hasil produksi irigasi (panen) dipengaruhi bukan saja oleh banyaknya tingkat pemenuhan kebutuhan air, tetapi juga diantaranya oleh cara pemberian air seperti yang dikemukakan oleh Ahmad et al. (2004), Erdem et al. (2006) dan Khan etal.(2005).Banyak faktor yang mempengaruhi pemberian air yang berlebihan, yaitu salah satunya adalah kurang tepatnya perencanaan penentuan pola tanam ( jenis tanaman dan saat tanam ) di daerah irigasi. Sehingga dalam rangka pengalokasian dan distribusi air diperlukan. optimasi alokasi air irigasi, baik secara spasial (antar petak) maupun temporal (penjadwalan/ scheduling). Salah satu program yang dapat menyelesaiakan distribusi air secara optimal adalah dengan Program Linier.Penelitian ini ditekankan pada bagaimana cara mengoptimalkan debit irigasi dengan mencoba tiga alternatif pola tanam (penentuan luas tanam optimum) dan keuntungan yang didapat dari hasil optimasi ketersediaan debit irigasiTujuan dari penelitian ini adalah mendapatkan pola tanam yang terbaik,sehingga pembagian debit air irigasi yang tersedia di Daerah Irigasi dapat dilakukansecara optimal.Hasil optimasi debit air di Daerah Irigasi Jatimlerek dengan cara mencoba-coba luas lahan dengan 3 (tiga) alternatif pola tata tanam di dapat bahwa di Daerah Irigasi Jatimlerek ,Pola Tata Tanam alternatif I Padi(185 ha)/ Polowijo (366 ha)/Tebu (15 ha)– Padi(451 ha)/Polowijo(100 ha)/tebu(15 ha)- Padi(40 ha)/Polowijo(400 ha)/tebu(15ha), dengan luas tanam optimum 566 Ha mendapatkan keuntungan maksimum sebesar Rp. 12.563.667.000,00. Dengan demikian , sebaiknya untuk tiap-tiap daerah irigasi selayaknya dilakukan optimasi yaitu dapat mengoptmalkan debit air yang tersedia dengan alternatif pola tanam terbaik atau juga luas tanah yang optimum.
Studi Penentuan Skala Prioritas Berdasarkan Kinerja Jaringan Irigasi Pada Jaringan Irigasi Batujai, Gde Bongoh, Dan Sidemen Di Kabupaten Lombok Tengah Supriyono, Supriyono; Rispiningtati, Rispiningtati; Montarcih, Lily; Sayekti, Rini Wahyu
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 2 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.703 KB)

Abstract

West Nusa Tenggara Province is a national food barn, and it is not surprising because of most people in this province are working in agriculture sector. The Ministry of Public Work, through its Public Work Official at West Nusa Tenggara Province and also River Region Bureau of West Nusa Tenggara I, has allocated the budget to finance the irrigation network every year in order to improve agriculture production. This research is a case study of the performance of the irrigation network. The performance is measured to help the determination of the priority scale of the management of irrigation network. The study area is located at irrigation regions of Batujai, Gde Bongoh and Sidemen. These three regions are under the work region of Water Official of Central Lombok District. Batujai irrigation network has 3,315 ha wide with water sufficiency rate (Factor K) of 58.33 %. Gde Bongoh irrigation network has 2,644 ha wide with water sufficiency rate of 66.67 %. Sidemen irrigation network has 3,315 ha wide with water sufficiency rate of 95.83 %. The assessment methods are based on The Decree of The Minister of Public Work No.32/PRT/M/2007. Result of the assessment indicates that Batujai and Gde Bongoh irrigation network are in low performance category with the point 65,67% and 67,60% respectively.Therefore that need improvement on the area of increase the field of personnel management and organizational management of Farmer Water User Association (P3A). Whereas Sidemen irrigation network is in good performance category with the point of 73.68 %.Keywords: Priority Scale, Factor K, Water Sufficiency, Irrigation Performance
Model-Model Pembangkitan Data Sintetis Untuk Curah Hujan Harian Di Wilayah Brantas Tengah Soetopo, Widandi; Limantara, Lily Montarcih; Sayekti, Rini Wahyu; Purwati, Endang; Chandrasasi, Dian; Ilham, Muhammad; Rahmadi, Agung
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (255.741 KB)

Abstract

This research is for finding the suitable synthetic daily rainfall generating model in the Middle Brantas River Basin - East Java. There are 7 models being considered, 4 single-site models, (1) the two-part, (2) the transition probability matrix, (3) the resampling, and (4) the time series, and 3 multisite models, (5) the conditional, (6) the extension of single site Markov chain, and (7) the random cascade. All time-series produced by the models are then tested statistically. The results show that the differences between the historial time series and the synthetical time series are not too significant. It turn out that the synthetic time series of multisite models are better than the synthetic time series of single-site models.Keywords: generating model, synthetic data, daily rainfall.
Studi Evaluasi Kualitas Dan Status Trofik Air Waduk Selorejo Akibat Erupsi Gunung Kelud Untuk Budidaya Perikanan Sayekti, Rini Wahyu; Yuliani, Emma; Bisri, Mohammad; Juwono, Pitojo Tri; Prasetyorini, Linda; Sonia, Fauzia; Putri, Ayu Pratama
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (654.69 KB)

Abstract

Selorejo dam in Malang regency has been used as a water storage and for freshwater fishery. On February 13 th 2014, Mount Kelud was erupted and produced volcanic ash which fell into the reservoir and caused an imbalanced water quality.The research was conducted in order to (a) observe a comparison between field measurement (temperature, turbidity, DO, pH, ammonia, nitrite, nitrate, total-P, Cu, Zn, Pb, Cr, and silica) and water quality standard in both upstream and middle station,(b) to determine time interval needed by each parameter to meet permitted value for freshwater fishery, (c) to determine water quality status using Pollution Index method, (d) to determine main contributors to the water pollution, (e) to determine trophic status index of Selorejo dam prior to and after the eruption, and (f) to analyze trophic status index fluctuation and pollution load capacity after the eruption.Method that was used to determine water quality status was Pollution Index. Trophic status index determined by comparing trophic status index standard on PerMenLH tahun 2009 with total-P, NO3N, chlorophyll a, and water clarity.The result from this research shows (a) before eruption, 40% of field measurement in upstream station and 28% of field measurement in middle station do not meet the standard values required. After eruption, 31% of field measurement in upstream station and 36% of field measurement in middle station do not meet the standard values required, (b) time interval needed for each parameters to meet permitted values are 111 days (pH and nitrate), 71 days (DO), 54 days (turbidity), while total-P and silica have not meet the required values up to the end of observation period, (c) water quality status in Selorejo dam on both stations are “Lightly polluted”, before and after the eruption of Mount Kelud, (d) main contributors to the water pollution on upstream station are total-P and nitrate. On middle station, the main contributors are total-P, silica, and nitrate, (e) Trophic status index of Selorejo dam is “hypereutrophic” for chlorophyll a, (f) pollution load capacity of Selorejo dam for total-P is 12.072, 58 kg P/year and has to be increased 69, 61% to 39.722, 33 kg P/year to lower trophic status index to “Oligotrophic”.Keywords: Water quality, water quality status, trophic status index, load capacity index, pollution index
Studi Penentuan Status Mutu Air Di Sungai Surabaya Untuk Keperluan Bahan Baku Air Minum Citri Priyono, Thesa Septine; Yuliani, Emma; Sayekti, Rini Wahyu
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1692.466 KB)

Abstract

The water of Surabaya River is the raw material of drinking water and one of water supply source for PDAM Surabaya. Over the last ten years pollution in Surabaya River is worsened. Pollution not only from domestic waste but also from existing industries around Surabaya River. This study aimed to determine the status of water quality in the Surabaya River. Determination water quality status in the Surabaya River conducted to closest monitoring station to the PDAM Waste Water Treatment Karangpilang. They are Cangkir Tambangan Monitoring Station, Bambe Tambangan Monitoring Stations, and Karangpilang Monitoring Station. The method used for the determination of water quality status are STORET and Pollution Index Method. Analysis of water quality status determination aims to determine the level of impurity in the nearest monitoring station. From the research it can be concluded, water quality status in Surabaya River is 49.44% heavily polluted by STORET for grade two. While 100% is being polluted by Pollution Index Method for grade two.Keywords: Water Quality Status, STORET, Pollution Index Method, Surabaya River
STUDI PENENTUAN SKALA PRIORITAS PENINGKATAN KINERJA JARINGAN IRIGASI PADA DAERAH IRIGASI BODOR KABUPATEN NGANJUK Utaya Kusuma, Olvi Pamadya; Rispiningtati, Rispiningtati; Sayekti, Rini Wahyu
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 1 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1594.775 KB)

Abstract

Kabupaten Nganjuk merupakan daerah agraris, dimana sebagian besar penduduknya bekerja pada sektor pertanian. Pemerintah Kabupaten Nganjuk dalam hal ini adalah Dinas Pekerjaan Umum Pengairan setiap tahun, dalam pengalokasian anggaran untuk biaya jaringan irigasi dalam upaya peningkatan produksi pertanian terus mengalami peningkatan. Hal ini disebabkan karena meningkatnya Anggaran Pendapatan dan Belanja Daerah (APBD) . Dalam penentuan alokasi anggaran suatu kegiatan khususnya jaringan irigasi antara lain harus mempertimbangkan juga kinerja pada aspek kondisi prasarana fisik jaringan dan aspek penunjang yang terdiri dari produktifitas tanam, Sarana Penunjang, Organisasi Personalia, Dokumentasi, Petani Pemakai Air. Sebagai salah satu studi kasus dalam penentuan kinerja jaringan irigasi dalam hal ini penentuan skala prioritas penanganan maka diambil lokasi studi adalah di Daerah Irigasi Bodor yang berada pada Wilayah Kerja UPTD Dinas Pengairan Pace kabupaten Nganjuk dengan luas baku sawah 1886 ha .Pada Daerah Irigasi Bodor mempunyai tingkat kecukupan air sesuai dengan pola pemberian air eksisting pada Jaringan Irigasi Mlilir dengan luas areal tanam 795 ha mempunyai tingkat kecukupan air 55,55% , Jaringan Irigasi Ngrambe Kanan dengan luas areal tanam 112 ha mempunyai tingkat kecukupan air 91,67%, Jaringan Irigasi Ngrambe Kiri dengan luas areal tanam 292 ha mempunyai tingkat kecukupan air 55,55%, Jaringan Irigasi Banaran Kanan dengan luas areal tanam 174 ha mempunyai tingkat kecukupan air 50,00%, Jaringan Irigasi Banaran Kiri dengan luas areal tanam 513 ha mempunyai tingkat kecukupan air 55,55% dalam satu periode tanam.Penentuan Kinerja Jaringan irigasi pada Daerah Irigasi Bodor ditinjau dari aspek prasarana fisik, produktifitas tanam, sarana penunjang, organisasi personalia, dokumentasi, P3A dengan penilaian yang didasarkan pada Peraturan Menteri Pekerjaan Umum no 32/PRT/M/2007 tentang Pedoman Operasi dan Pemeliharaan Jaringan Irigasi diperoleh Jaringan Irigasi Mlilir 74,07 dengan kriteria kinerja baik, Jaringan Irigasi Ngrambe Kanan 79,14 dengan kriteria kinerja baik, Jaringan Irigasi Ngrambe Kiri 76,85 dengan kriteria kinerja baik, Jaringan Irigasi Banaran Kanan 74,51 dengan kriteria kinerja baik, Jaringan Irigasi Banaran Kiri 77,42 dengan kriteria kinerja baik. Penentuan skala prioritas berdasarkan evaluasi Faktor Indeks Kinerja maka ditentukan pada aspek fisik Jaringan Irigasi Mlilir dengan nilai prosentase 32,17 sebagai skala prioritas penanganan yang pertama, selanjutnya Jaringan Irigasi Banaran Kanan, Jaringan Irigasi Ngrambe Kanan, Jaringan Irigasi Ngrambe Kiri, dan Jaringan Irigasi Banaran Kiri.Kata kunci: Tingkat kecukupan air,kinerja irigasi,skala prioritas.
Status Trofik Dan Daya Tampung Beban Pencemaran Waduk Sutami Juantari, Gilang Y.; Sayekti, Rini Wahyu; Harisuseno, Donny
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (825.576 KB)

Abstract

Sutami reservoir water quality declined due to the high character of organic waste disposal. This degradation is attributed by contamination due to natural erosion and agricultural waste, is also due to the entry of domestic waste (household) and industrial waste in upstream reservoirs Sutami. The addition of organic and inorganic materials in the form of waste into the reservoir in addition to changing the chemical composition of water, also affects the biological properties of these waters.The purpose of this study was to determine the load capacity of pollution that occurred in the reservoir Sutami and trophic status based on the Regulation of the Minister of Environment No. 28 of 2009.The study was conducted in the reservoir Sutami using primary and secondary data. Sampling locations in the central part of the reservoir at a depth of 0.3 m and 5 m and the lower reaches of the reservoir at a depth of 0.3 m and 10 m. Observed variables include levels of P (Phosphorus), water clarity, and Chlorophyll-a is contained in water reservoirs Sutami. Chlorophyll-a and the brightness of the water obtained from the sampling process independently, while the number of secondary data from phosphorus (P) obtained from Perum Jasa Tirta I from January 2010 until May of 2011. The data obtained were analyzed with descriptive statistics showing the average and standard deviation.The results showed that the condition of the water reservoir was contaminated Sutami in moderate to severe, both in the location of reservoirs upstream and downstream reservoirs. Trophic status of reservoirs Sutami is eutrofik to hypertrophic occurs on the downstream and middle reservoirs. Impacts arising from pollution levels that occur in the Sutami reservoir is the potential for algae bloom due to the high amount of phosphorus and chlorophyll-a. Load carrying capacity of the reservoir pollution Sutami for total phosphorus (kg / year) at the upstream location; 39 kg P / year, the middle; 195 kg P / year and downstream; 178.5 kg P / year.Keywords: pollution, trophic status, chlorophyll-a, reservoirs Sutami
Co-Authors Achmad Hariyadi Agung Prabowo Agung Rahmadi Alex Wahyu Kesuma Ambong, Ahmad Ramadhan Anggara Cahyo Wibowo Ayu Pratama Putri, Ayu Pratama Darwinto, Panji Satria Desilawati, Devarolla Dian Chandrasasi Donny Harisuseno Emma Yuliani Endang Purwati RN Fauzia Sonia, Fauzia Gilang Y. Juantari Jamhari Jamhari Jasmine, Hersaninda Nerissa Joko Suparmanto La Ode Agisaqma Lily Montarcih Lily Montarcih Limantara Linda Prasetyorini Mohammad Bisri Mufrodi, Syahrizal Muhammad Ilham Olvi Pamadya Utaya Kusuma Pitojo Tri Juwono Pratiwi, Erike Oktaviyanti Rispiningtati Rispiningtati Riyanto Haribowo Sri Wahyuni Thesa Septine Citri Priyono Wahyuni, Indah Tri Widandi Soetopo Yohana Vivit