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OPTIMALISASI PENGUSAHAAN HIDROELEKTRIK RIAM KANAN DALAM RANGKA MEMENUHI KEBUTUHAN AIR BAKU SPAM KAWASAN REGIONAL BANJARBARU Melisa Triandini Maulani; Arwin Sabar
Jurnal Teknik Lingkungan Vol. 26 No. 1 (2020)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.tl.2020.26.1.1

Abstrak : Meningkatnya kebutuhan air minum seiring dengan pertumbuhan penduduk Kabupaten Banjar dan Kota Banjarbaru, provinsi Kalimantan Selatan serta komponen hidrologi yang stokastik mengakibatkan adanya ketidakpastian masa depan dalam pola pengelolaan PLTA Ir.P.M. Noor Waduk Riam Kanan sehingga dengan fungsi utilitas energi listrik harga konstan seperti saat ini, pemenuhan kebutuhan air baku di downstream kurang optimal. Waduk PLTA Riam Kanan di jadikan sebagai alternatif sumber air baku. Alokasi air minum menggunakan debit andalan kering R10-R20 yang bernilai 19,3-27,5 m3/detik. Korelasi debit hasil prakiraan kontinyu dengan debit historis sebesar 0,72 sedangkan korelasi debit prakiraan diskrit markov dengan debit historis sebesar 0,62 sehingga debit prakiraan kontinu dianggap lebih adaptif terhadap debit historisnya. Pengelolaan waduk optimal menggunakan model kontinu memiliki koefisien korelasi sebesar 0,852 terhadap lintasan aktualnya sedangkan menggunakan model diskrit markov sebesar 0,846 sehingga model kontinu terpilih menjadi model pola pengusahaan waduk yang paling optimal untuk untuk kebutuhan air di downstream. Pengelolaan waduk optimal diperhitungkan dengan pengelolaan optimal berdasarkan ketidakpastian masa depan, sedangkan utilitas harga berubah dihitung dengan metode program dinamik Bellman dengan iterasi "Du Coloir". Untuk diskritisasi volume sebesar 70, 35 dan 10 juta m3 didapatkan gain sebesar 1462,2525, 1207,6640 dan 990,1395; 1463,9817, 1209,8065 dan 996,2856; 1470,1043, 1238,1262 dan 1002,3623. Adapun korelasi untuk diskritisasi 70, 35 dan 10 juta m3 adalah 0,3810; 0,3822 dan 0,4700,membuktikan bahwa semakin besardiskritisasi, semakin besar korelasi yang didapatkan antara St pedoman dan St aktual.. Kata kunci : air baku, pengelolaan waduk, deterministik, optimal, program dinamik Bellman Abstract : The increased demand for drinking water along with the population growth of Banjar Regency and Banjarbaru City, South Kalimantan province and stochastical hydrology component resulted in future uncertainty in the management pattern of Riam Kanan Reservoir Ir. P. M. Noor hydropower plant so that with the electric utility function of constant price such as the present, fulfillment of raw water demand in downstream is less than optimal. The Riam Kanan reservoir hydropower plant is used as an alternative source of raw water. Allocation of drinking water uses dry R10-R20 mainstay discharge which is worth 19.3-27.5 m3/second. The discharge correlation results from continuous forecasts with historical debit of 0.72 while the discrete markov forecast debit correlation with historical discharge is 0.62 so that continuous forecasting debits are considered more adaptive to historical debit. Optimal reservoir management using a continuous model has a correlation coefficient of 0.988 on the actual trajectory while using the markov discrete model of 0.902 so that the continuous model is chosen to be the most optimal model of reservoir designation for downstream water needs. Optimal reservoir management is calculated by optimal management based on future uncertainties, while utility price changes are calculated by the Bellman dynamic program method and "Du Coloir iteration. For the discretization of the volume of 70, 35 and 10 Mm3 the gain obtained are 1462,2525, 1207,6640 and 990,1395; 1463,9817, 1209,8065 and 996,2856; 1470,1043, 1238,1262 and 1002,3623. Correlation for discretization of 70, 35, and 10 Mm3 are 0,3810, 0,3822 dan 0,4700, proving that the larger discretization is, the larger correlation between St trajectory dan St actual. Keyword : raw water, reservoir management, deterministic, optimal, Bellman's dynamic program

The linkage of water quality measurement the downstream of the Citarum cascade reservoir management Lieza Corsita; Arwin Sabar; Barwin Setiani Muntalif; Indah Rachmatiah S. Salami
SINERGI Vol 26, No 2 (2022)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2022.2.007

Cascade Citarum Reservoirs, located in the western part of the island of Java in Indonesia country, cover the main building dams, hydropower, irrigation facilities and other supporting facilities. The study aimed to evaluate the characteristics of the existing condition of the downstream reservoir, including the relation of the water quality and quantity, by using a conceptual model of the Citarum Cascade Reservoir management. The study mostly used the secondary data acquired from Indonesia Power, the Management Bureau of Cirata Dam (BPWC), Perum Jasa Tirta II (PJT) Jatiluhur, the Management Bureau of the Citarum-Ciliwung River Basin (BPDAS Citarum-Ciliwung), and the Water Resource Management Agency of the West Java Province. This research aims to predict the discharge plans R5 and R20 using the Weibull method and the uncertainty of future discharge using the continuous model approach. Furthermore, the multivariate statistical test will analyse the linkage of water quality in reservoir management. To solve the problem of the allocation of the raw water discharge to fulfil the water requirement in the downstream area was developed proportionally in this study, in which the raw water discharge allocations were 46.92 m3/sec, 91.9 m3 /sec and 97.95 m3/sec for Saguling, Cirata, and Jatiluhur, respectively. The tests to determine the relationship between the discharge and water quality using the Discriminant test indicated that the discharge correlates strongly with the parameters such as NH3. BOD and COD.

THE POTENTIAL CIBERANG RIVER ANALYSIS FOR DRINKING WATER SUPPLY DEVELOPMENT OF BANTEN PROVINCE Ira Mulyawati; Indah Rachmatiah Siti Salami; Arwin Sabar; Mariana Marselina; Hernita Nasir
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Aim: This study was aimed to analyze the potential of water sources in the Ciberang River to support drinking water supply system of Banten Province. Methodology and results: The method use to analyze the potential of Ciberang river is a hydrological statistical analysis. The results of the hydrological statistical analysis show that the water resources of the Ciberang River are not sufficient to meet domestic and industrial water needs in Banten Province. Domestic and industrial water demand in Banten Province in 2025 is estimated at 14.64 m3/s and 10.46 m3/s, respectively, while the mainstay discharge with the return period of 10 and 20 year for all durations does not meet these water needs. The mainstay discharge of the Ciberang River with a 10-year return period of 1, 2, 7, 15 and 30 day respectively was 0.08 m3/s, 0.1 m3/s, 0.19 m3/s, 0.36 m3/s, and 0.87 m3/s. The mainstays of the 20-year return period of 1,2,7,15 and 30 day respectively are 0.04 m3/s, 0.06 m3/s, 0.11 m3/s, 0.23 m3/s and 0.59 m3/s. Conclusion, significance, and impact study: Based on this, it is necessary to conserve water resources to increase the main flow of the Ciberang River. One of the strategic policies to increase the river's mainstay discharge is constructing the reservoir.

KAJIAN PEMENUHAN KEBUTUHAN AIR MINUM UNTUK MASYARAKAT DI KAWASAN SEMI-ARID INDONESIA (A Study on Fulfillment of Drinking Water Need of People in Semi-Arid Areas in Indonesia) Jakobis Johanis Messakh; Arwin Sabar; Iwan Kridasantausa Hadihardaja; Alex Abdi Chalik
Jurnal Manusia dan Lingkungan Vol 22, No 3 (2015): November
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jml.18751

ABSTRAKKawasan Kota Kupang dan sekitarnya saat ini berkembang menjadi pusat perekonomian, pendidikan dan sosial budaya di NTT, dengan laju permintaan kebutuhan air minum yang tinggi. Tantangan penyediaan air minum semakin besar, karena daerah tersebut merupakan kawasan semi-arid di Indonesia yang memiliki keterbatasan ketersediaan dan kontinuitas air dari berbagai sumber air yang ada. Penelitian ini bertujuan untuk menganalisa pemenuhan kebutuhan air minum bagi masyarakat di kawasan semi-arid Indonesia, khususnya Regional Kupang, tahun 2015-2035. Penelitian dibagi atas tiga tahap, yakni tahap pertama mengkaji proyeksi laju permintaan air minum tahun 2015-2035, tahap kedua melakukan identifikasi potensi sumber air tersedia, dan tahap ketiga mengatur skenario pemenuhan kebutuhan air minum. Hasil penelitian menunjukkan bahwa, potensi sumber air yang ada, sulit untuk memenuhi kebutuhan air minum pada rentang waktu perencanaan 2015-2035, khususnya mulai tahun 2019 dengan target pencapaian pelayanan air minum harus mencapai 100%. Untuk mengatasi hal ini maka, paradigma pengelolaan sumber daya air untuk keperluan multisektor perlu disesuaikan menurut kekhasan kawasan semi-arid, dengan prioritas utama untuk kebutuhan air minum. Potensi curah hujan yang terjadi perlu dioptimalkan pemanfaatannya sebagai sumber air baku, melalui pembangunan waduk, sarana penampungan air hujan lainnya dan disertai upaya konservasi. Penghematan penggunaan air sesuai kebutuhan dan kearifan lokal daerah, serta pengaturan prioritas daerah pelayanan untuk sistem perpipaan air minum, merupakan strategi lainnya yang bisa dilakukan. Penggunaan air tanah yang merupakan sumber air baku utama, harus dikendalikan dengan mempertimbangkan daya dukung lingkungan.ABSTRACTKupang and its surrounding region are currently developing into a center of economy, education and socio-culture in the NTT province, with a high rate of demand for drinking water. The challenge to provide drinking water supply has become greater and greater due to the fact that the area belongs to the semi-arid Indonesian region with limited water availability and continuity of the existing water sources. This study aims to analyze the fulfillment of the need for drinking water of the people in the semi-arid region of Indonesia, particularly in the city of Kupang and its surrounding, for the years of 2015-2035. The research was divided into three stages, i.e. the first stage, which examines the projected rate of the demand for the drinking water in 2015-2035, the second stage, which identifies potential sources of available water, and the third stage, which sets the scenario for providing drinking water supply. The results showed that it was difficult for the existing water sources to fulfill the need for the drinking water in the planned period of 2015-2035, especially starting from 2019, with the target of achieving 100% drinking water services. To overcome the above-mentioned problem, it is deemed necessary to adjust the paradigm of the water resource management for the purpose of fulfilling the multi-sector needs according to the peculiarities of the semi-arid region, with drinking water needs as the main priority. The utilization of the potential rainfall needs to be optimized as a source of raw water through the construction of both dams and other means of rainwater harvesting, and conservation. Efficient use of water as required and local wisdom of the region, as well as setting priorities for the service area of drinking water piping systems, are other impending strategies. The use of ground water as the main source of raw water in the study area should be controlled by taking into consideration the environmental supporting capacity.

THE POTENTIAL CIBERANG RIVER ANALYSIS FOR DRINKING WATER SUPPLY DEVELOPMENT OF BANTEN PROVINCE Ira Mulyawati; Indah Rachmatiah Siti Salami; Arwin Sabar; Mariana Marselina; Hernita Nasir
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.12589

Aim: This study was aimed to analyze the potential of water sources in the Ciberang River to support drinking water supply system of Banten Province. Methodology and results: The method use to analyze the potential of Ciberang river is a hydrological statistical analysis. The results of the hydrological statistical analysis show that the water resources of the Ciberang River are not sufficient to meet domestic and industrial water needs in Banten Province. Domestic and industrial water demand in Banten Province in 2025 is estimated at 14.64 m3/s and 10.46 m3/s, respectively, while the mainstay discharge with the return period of 10 and 20 year for all durations does not meet these water needs. The mainstay discharge of the Ciberang River with a 10-year return period of 1, 2, 7, 15 and 30 day respectively was 0.08 m3/s, 0.1 m3/s, 0.19 m3/s, 0.36 m3/s, and 0.87 m3/s. The mainstays of the 20-year return period of 1,2,7,15 and 30 day respectively are 0.04 m3/s, 0.06 m3/s, 0.11 m3/s, 0.23 m3/s and 0.59 m3/s. Conclusion, significance, and impact study: Based on this, it is necessary to conserve water resources to increase the main flow of the Ciberang River. One of the strategic policies to increase the river's mainstay discharge is constructing the reservoir.

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